c18cee51906da78a6164eeaae09517dbc384a694
[openafs.git] / src / WINNT / afsd / cm_daemon.c
1 /*
2  * Copyright 2000, International Business Machines Corporation and others.
3  * All Rights Reserved.
4  *
5  * This software has been released under the terms of the IBM Public
6  * License.  For details, see the LICENSE file in the top-level source
7  * directory or online at http://www.openafs.org/dl/license10.html
8  */
9
10 #include <afsconfig.h>
11 #include <afs/param.h>
12 #include <roken.h>
13
14 #include <afs/stds.h>
15
16 #include <windows.h>
17 #include <winsock2.h>
18 #include <iphlpapi.h>
19 #include <stdlib.h>
20 #include <malloc.h>
21 #include <string.h>
22
23 #include "afsd.h"
24 #include "smb.h"
25
26 #include <rx/rx.h>
27 #include <rx/rx_prototypes.h>
28 #include <WINNT/afsreg.h>
29
30 #include "afsicf.h"
31
32 /* in seconds */
33 long cm_daemonCheckDownInterval  = 180;
34 long cm_daemonCheckUpInterval    = 240;
35 long cm_daemonCheckVolInterval   = 3600;
36 long cm_daemonCheckCBInterval    = 60;
37 long cm_daemonCheckVolCBInterval = 0;
38 long cm_daemonCheckLockInterval  = 60;
39 long cm_daemonTokenCheckInterval = 180;
40 long cm_daemonCheckOfflineVolInterval = 600;
41 long cm_daemonPerformanceTuningInterval = 0;
42 long cm_daemonRankServerInterval = 600;
43 long cm_daemonRDRShakeExtentsInterval = 0;
44 long cm_daemonAfsdHookReloadInterval = 0;
45 long cm_daemonEAccesCheckInterval = 1800;
46
47 typedef struct daemon_state {
48     osi_rwlock_t lock;
49     afs_uint32   queueCount;
50     cm_bkgRequest_t *head;
51     cm_bkgRequest_t *tail;
52     afs_uint64   completeCount;
53     afs_uint64   retryCount;
54     afs_uint64   errorCount;
55 } daemon_state_t;
56
57 daemon_state_t *cm_daemons = NULL;
58 int cm_nDaemons = 0;
59
60 extern int powerStateSuspended;
61 int daemon_ShutdownFlag = 0;
62 static time_t lastIPAddrChange = 0;
63
64 static EVENT_HANDLE cm_Daemon_ShutdownEvent = NULL;
65 static EVENT_HANDLE cm_LockDaemon_ShutdownEvent = NULL;
66 static EVENT_HANDLE cm_IPAddrDaemon_ShutdownEvent = NULL;
67 static EVENT_HANDLE cm_BkgDaemon_ShutdownEvent[CM_MAX_DAEMONS] =
68        {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
69
70 void * cm_IpAddrDaemon(void * vparm)
71 {
72     extern void smb_CheckVCs(void);
73     char * name = "cm_IPAddrDaemon_ShutdownEvent";
74
75     cm_IPAddrDaemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
76     if ( GetLastError() == ERROR_ALREADY_EXISTS )
77         afsi_log("Event Object Already Exists: %s", name);
78
79     rx_StartClientThread();
80
81     while (daemon_ShutdownFlag == 0) {
82         DWORD Result;
83
84         thrd_SetEvent(cm_IPAddrDaemon_ShutdownEvent);
85         Result = NotifyAddrChange(NULL,NULL);
86         if (Result == NO_ERROR && daemon_ShutdownFlag == 0) {
87             lastIPAddrChange = osi_Time();
88             if (smb_Enabled)
89                 smb_SetLanAdapterChangeDetected();
90             cm_SetLanAdapterChangeDetected();
91             thrd_ResetEvent(cm_IPAddrDaemon_ShutdownEvent);
92
93             cm_ServerClearRPCStats();
94         }
95     }
96
97     thrd_SetEvent(cm_IPAddrDaemon_ShutdownEvent);
98     pthread_exit(NULL);
99     return NULL;
100 }
101
102 afs_int32 cm_RequestWillBlock(cm_bkgRequest_t *rp)
103 {
104     afs_int32 willBlock = 0;
105
106     if (rp->procp == cm_BkgStore) {
107         /*
108          * If the datastoring flag is set, it means that another
109          * thread is already performing an exclusive store operation
110          * on this file.  The exclusive state will be cleared once
111          * the file server locks the vnode.  Therefore, at most two
112          * threads can be actively involved in storing data at a time
113          * on a file.
114          */
115         lock_ObtainRead(&rp->scp->rw);
116         willBlock = (rp->scp->flags & CM_SCACHEFLAG_DATASTORING);
117         lock_ReleaseRead(&rp->scp->rw);
118     }
119     else if (rp->procp == RDR_BkgFetch || rp->procp == cm_BkgPrefetch) {
120         /*
121          * Attempt to determine if there is a conflict on the requested
122          * range of the file.  If the first in the range does not exist
123          * in the cache assume there is no conflict.  If the buffer does
124          * exist, check to see if an I/O operation is in progress
125          * by using the writing and reading flags as an indicator.
126          */
127         cm_buf_t *bufp = NULL;
128         rock_BkgFetch_t *rockp = (rock_BkgFetch_t *)rp->rockp;
129
130         bufp = buf_Find(&rp->scp->fid, &rockp->base);
131         if (bufp) {
132             willBlock = (bufp->flags & (CM_BUF_WRITING|CM_BUF_READING));
133             buf_Release(bufp);
134         }
135     }
136
137     return willBlock;
138 }
139
140 void * cm_BkgDaemon(void * vparm)
141 {
142     cm_bkgRequest_t *rp;
143     afs_int32 code;
144     char name[32] = "";
145     long daemonID = (long)(LONG_PTR)vparm;
146
147     snprintf(name, sizeof(name), "cm_BkgDaemon_ShutdownEvent%u", daemonID);
148
149     cm_BkgDaemon_ShutdownEvent[daemonID] = thrd_CreateEvent(NULL, FALSE, FALSE, name);
150     if ( GetLastError() == ERROR_ALREADY_EXISTS )
151         afsi_log("Event Object Already Exists: %s", name);
152
153     rx_StartClientThread();
154
155     lock_ObtainWrite(&cm_daemons[daemonID].lock);
156     while (daemon_ShutdownFlag == 0) {
157         int willBlock = 0;
158
159         if (powerStateSuspended) {
160             Sleep(1000);
161             continue;
162         }
163         if (!cm_daemons[daemonID].tail) {
164             osi_SleepW((LONG_PTR)&cm_daemons[daemonID].head, &cm_daemons[daemonID].lock);
165             lock_ObtainWrite(&cm_daemons[daemonID].lock);
166             continue;
167         }
168
169         /* we found a request */
170         for (rp = cm_daemons[daemonID].tail; rp; rp = (cm_bkgRequest_t *) osi_QPrev(&rp->q))
171         {
172             if (rp->scp->flags & CM_SCACHEFLAG_DELETED)
173                 break;
174
175             /*
176              * If the request has active I/O such that this worker would
177              * be forced to block, leave the request in the queue and move
178              * on to one that might be available for servicing.
179              */
180             if (cm_RequestWillBlock(rp)) {
181                 willBlock++;
182                 continue;
183             }
184
185             if (cm_ServerAvailable(&rp->scp->fid, rp->userp))
186                 break;
187         }
188
189         if (rp == NULL) {
190             /*
191              * Couldn't find a request that we could process at the
192              * current time.  If there were requests that would cause
193              * the worker to block, sleep for 25ms so it can promptly
194              * respond when it is available.  Otherwise, sleep for 1s.
195              *
196              * This polling cycle needs to be replaced with a proper
197              * producer/consumer dynamic worker pool.
198              */
199             osi_Log2(afsd_logp,"cm_BkgDaemon[%u] sleeping %dms all tasks would block",
200                      daemonID, willBlock ? 100 : 1000);
201
202             lock_ReleaseWrite(&cm_daemons[daemonID].lock);
203             Sleep(willBlock ? 100 : 1000);
204             lock_ObtainWrite(&cm_daemons[daemonID].lock);
205             continue;
206         }
207
208         osi_QRemoveHT((osi_queue_t **) &cm_daemons[daemonID].head, (osi_queue_t **) &cm_daemons[daemonID].tail, &rp->q);
209         osi_assertx(cm_daemons[daemonID].queueCount-- > 0, "cm_bkgQueueCount 0");
210         lock_ReleaseWrite(&cm_daemons[daemonID].lock);
211
212         osi_Log2(afsd_logp,"cm_BkgDaemon[%u] processing request 0x%p", daemonID, rp);
213
214         if (rp->scp->flags & CM_SCACHEFLAG_DELETED) {
215             osi_Log2(afsd_logp,"cm_BkgDaemon[%u] DELETED scp 0x%x", daemonID, rp->scp);
216             code = CM_ERROR_BADFD;
217         } else {
218 #ifdef DEBUG_REFCOUNT
219             osi_Log3(afsd_logp,"cm_BkgDaemon[%u] (before) scp 0x%x ref %d", daemonID, rp->scp, rp->scp->refCount);
220 #endif
221             code = (*rp->procp)(rp->scp, rp->rockp, rp->userp, &rp->req);
222 #ifdef DEBUG_REFCOUNT
223             osi_Log3(afsd_logp,"cm_BkgDaemon[%u] (after) scp 0x%x ref %d", daemonID, rp->scp, rp->scp->refCount);
224 #endif
225         }
226
227         /*
228          * Keep the following list synchronized with the
229          * error code list in cm_BkgStore.
230          * cm_SyncOpDone(CM_SCACHESYNC_ASYNCSTORE) will be called there unless
231          * one of these errors has occurred.
232          */
233         switch ( code ) {
234         case CM_ERROR_TIMEDOUT: /* or server restarting */
235         case CM_ERROR_RETRY:
236         case CM_ERROR_WOULDBLOCK:
237         case CM_ERROR_ALLBUSY:
238         case CM_ERROR_ALLDOWN:
239         case CM_ERROR_ALLOFFLINE:
240         case CM_ERROR_PARTIALWRITE:
241             if (rp->procp == cm_BkgStore ||
242                 rp->procp == RDR_BkgFetch) {
243                 osi_Log3(afsd_logp,
244                          "cm_BkgDaemon[%u] re-queueing failed request 0x%p code 0x%x",
245                          daemonID, rp, code);
246                 lock_ObtainWrite(&cm_daemons[daemonID].lock);
247                 cm_daemons[daemonID].queueCount++;
248                 cm_daemons[daemonID].retryCount++;
249                 osi_QAddT((osi_queue_t **) &cm_daemons[daemonID].head, (osi_queue_t **)&cm_daemons[daemonID].tail, &rp->q);
250                 break;
251             } /* otherwise fall through */
252         case 0:  /* success */
253         default: /* other error */
254             if (code == 0) {
255                 osi_Log2(afsd_logp,"cm_BkgDaemon[%u] SUCCESS: request 0x%p", daemonID, rp);
256                 cm_daemons[daemonID].completeCount++;
257             } else {
258                 osi_Log3(afsd_logp,"cm_BkgDaemon[%u] FAILED: request dropped 0x%p code 0x%x",
259                          daemonID, rp, code);
260                 cm_daemons[daemonID].errorCount++;
261             }
262             cm_ReleaseUser(rp->userp);
263             cm_ReleaseSCache(rp->scp);
264             free(rp->rockp);
265             free(rp);
266             lock_ObtainWrite(&cm_daemons[daemonID].lock);
267         }
268     }
269     lock_ReleaseWrite(&cm_daemons[daemonID].lock);
270     thrd_SetEvent(cm_BkgDaemon_ShutdownEvent[daemonID]);
271     pthread_exit(NULL);
272     return NULL;
273 }
274
275 int cm_QueueBKGRequest(cm_scache_t *scp, cm_bkgProc_t *procp, void *rockp,
276                         cm_user_t *userp, cm_req_t *reqp)
277 {
278     cm_bkgRequest_t *rp, *rpq;
279     afs_uint32 daemonID;
280     int duplicate = 0;
281
282     rp = malloc(sizeof(*rp));
283     memset(rp, 0, sizeof(*rp));
284
285     cm_HoldSCache(scp);
286     rp->scp = scp;
287     cm_HoldUser(userp);
288     rp->userp = userp;
289     rp->procp = procp;
290     rp->rockp = rockp;
291     rp->req = *reqp;
292
293     /* Use separate queues for fetch and store operations */
294     daemonID = scp->fid.hash % (cm_nDaemons/2) * 2;
295     if (procp == cm_BkgStore)
296         daemonID++;
297
298     /* Check to see if this is a duplicate request */
299     lock_ObtainWrite(&cm_daemons[daemonID].lock);
300     if ( procp == cm_BkgStore || procp == RDR_BkgFetch || procp == cm_BkgPrefetch ) {
301         for (rpq = cm_daemons[daemonID].head; rpq; rpq = (cm_bkgRequest_t *) osi_QNext(&rpq->q))
302         {
303             if ( rpq->procp == procp &&
304                  rpq->scp == scp &&
305                  rpq->userp == userp)
306             {
307                 if (rp->procp == cm_BkgStore) {
308                     rock_BkgStore_t *rock1p = (rock_BkgStore_t *)rp->rockp;
309                     rock_BkgStore_t *rock2p = (rock_BkgStore_t *)rpq->rockp;
310
311                     duplicate = (memcmp(rock1p, rock2p, sizeof(*rock1p)) == 0);
312                 }
313                 else if (rp->procp == RDR_BkgFetch || rp->procp == cm_BkgPrefetch) {
314                     rock_BkgFetch_t *rock1p = (rock_BkgFetch_t *)rp->rockp;
315                     rock_BkgFetch_t *rock2p = (rock_BkgFetch_t *)rpq->rockp;
316
317                     duplicate = (memcmp(rock1p, rock2p, sizeof(*rock1p)) == 0);
318                 }
319
320                 if (duplicate) {
321                     /* found a duplicate; update request with latest info */
322                     break;
323                 }
324             }
325         }
326     }
327
328     if (!duplicate) {
329         cm_daemons[daemonID].queueCount++;
330         osi_QAddH((osi_queue_t **) &cm_daemons[daemonID].head, (osi_queue_t **)&cm_daemons[daemonID].tail, &rp->q);
331     }
332     lock_ReleaseWrite(&cm_daemons[daemonID].lock);
333
334     if (duplicate) {
335         cm_ReleaseSCache(scp);
336         cm_ReleaseUser(userp);
337         free(rp->rockp);
338         free(rp);
339         return -1;
340     } else {
341         osi_Wakeup((LONG_PTR) &cm_daemons[daemonID].head);
342         return 0;
343     }
344 }
345
346 static int
347 IsWindowsFirewallPresent(void)
348 {
349     SC_HANDLE scm;
350     SC_HANDLE svc;
351     BOOLEAN flag;
352     BOOLEAN result = FALSE;
353     LPQUERY_SERVICE_CONFIG pConfig = NULL;
354     DWORD BufSize;
355     LONG status;
356
357     /* Open services manager */
358     scm = OpenSCManager(NULL, NULL, GENERIC_READ);
359     if (!scm) return FALSE;
360
361     /* Open Windows Firewall service */
362     svc = OpenService(scm, "MpsSvc", SERVICE_QUERY_CONFIG);
363     if (!svc) {
364         afsi_log("MpsSvc Service could not be opened for query: 0x%x", GetLastError());
365         svc = OpenService(scm, "SharedAccess", SERVICE_QUERY_CONFIG);
366         if (!svc)
367             afsi_log("SharedAccess Service could not be opened for query: 0x%x", GetLastError());
368     }
369     if (!svc)
370         goto close_scm;
371
372     /* Query Windows Firewall service config, first just to get buffer size */
373     /* Expected to fail, so don't test return value */
374     (void) QueryServiceConfig(svc, NULL, 0, &BufSize);
375     status = GetLastError();
376     if (status != ERROR_INSUFFICIENT_BUFFER)
377         goto close_svc;
378
379     /* Allocate buffer */
380     pConfig = (LPQUERY_SERVICE_CONFIG)GlobalAlloc(GMEM_FIXED,BufSize);
381     if (!pConfig)
382         goto close_svc;
383
384     /* Query Windows Firewall service config, this time for real */
385     flag = QueryServiceConfig(svc, pConfig, BufSize, &BufSize);
386     if (!flag) {
387         afsi_log("QueryServiceConfig failed: 0x%x", GetLastError());
388         goto free_pConfig;
389     }
390
391     /* Is it autostart? */
392     afsi_log("AutoStart 0x%x", pConfig->dwStartType);
393     if (pConfig->dwStartType < SERVICE_DEMAND_START)
394         result = TRUE;
395
396   free_pConfig:
397     GlobalFree(pConfig);
398   close_svc:
399     CloseServiceHandle(svc);
400   close_scm:
401     CloseServiceHandle(scm);
402
403     return result;
404 }
405
406 void
407 cm_DaemonCheckInit(void)
408 {
409     HKEY parmKey;
410     DWORD dummyLen;
411     DWORD dummy;
412     DWORD code;
413
414     code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, AFSREG_CLT_SVC_PARAM_SUBKEY,
415                          0, KEY_QUERY_VALUE, &parmKey);
416     if (code)
417         return;
418
419     dummyLen = sizeof(DWORD);
420     code = RegQueryValueEx(parmKey, "daemonCheckDownInterval", NULL, NULL,
421                             (BYTE *) &dummy, &dummyLen);
422     if (code == ERROR_SUCCESS && dummy)
423         cm_daemonCheckDownInterval = dummy;
424     afsi_log("daemonCheckDownInterval is %d", cm_daemonCheckDownInterval);
425
426     dummyLen = sizeof(DWORD);
427     code = RegQueryValueEx(parmKey, "daemonCheckUpInterval", NULL, NULL,
428                             (BYTE *) &dummy, &dummyLen);
429     if (code == ERROR_SUCCESS && dummy)
430         cm_daemonCheckUpInterval = dummy;
431     afsi_log("daemonCheckUpInterval is %d", cm_daemonCheckUpInterval);
432
433     dummyLen = sizeof(DWORD);
434     code = RegQueryValueEx(parmKey, "daemonCheckVolInterval", NULL, NULL,
435                             (BYTE *) &dummy, &dummyLen);
436     if (code == ERROR_SUCCESS && dummy)
437         cm_daemonCheckVolInterval = dummy;
438     afsi_log("daemonCheckVolInterval is %d", cm_daemonCheckVolInterval);
439
440     dummyLen = sizeof(DWORD);
441     code = RegQueryValueEx(parmKey, "daemonCheckCBInterval", NULL, NULL,
442                             (BYTE *) &dummy, &dummyLen);
443     if (code == ERROR_SUCCESS && dummy)
444         cm_daemonCheckCBInterval = dummy;
445     afsi_log("daemonCheckCBInterval is %d", cm_daemonCheckCBInterval);
446
447     dummyLen = sizeof(DWORD);
448     code = RegQueryValueEx(parmKey, "daemonCheckVolCBInterval", NULL, NULL,
449                             (BYTE *) &dummy, &dummyLen);
450     if (code == ERROR_SUCCESS && dummy)
451         cm_daemonCheckVolCBInterval = dummy;
452     afsi_log("daemonCheckVolCBInterval is %d", cm_daemonCheckVolCBInterval);
453
454     dummyLen = sizeof(DWORD);
455     code = RegQueryValueEx(parmKey, "daemonCheckLockInterval", NULL, NULL,
456                             (BYTE *) &dummy, &dummyLen);
457     if (code == ERROR_SUCCESS && dummy)
458         cm_daemonCheckLockInterval = dummy;
459     afsi_log("daemonCheckLockInterval is %d", cm_daemonCheckLockInterval);
460
461     dummyLen = sizeof(DWORD);
462     code = RegQueryValueEx(parmKey, "daemonCheckTokenInterval", NULL, NULL,
463                             (BYTE *) &dummy, &dummyLen);
464     if (code == ERROR_SUCCESS && dummy)
465         cm_daemonTokenCheckInterval = dummy;
466     afsi_log("daemonCheckTokenInterval is %d", cm_daemonTokenCheckInterval);
467
468     dummyLen = sizeof(DWORD);
469     code = RegQueryValueEx(parmKey, "daemonCheckOfflineVolInterval", NULL, NULL,
470                             (BYTE *) &dummy, &dummyLen);
471     if (code == ERROR_SUCCESS && dummy)
472         cm_daemonCheckOfflineVolInterval = dummy;
473     afsi_log("daemonCheckOfflineVolInterval is %d", cm_daemonCheckOfflineVolInterval);
474
475     dummyLen = sizeof(DWORD);
476     code = RegQueryValueEx(parmKey, "daemonRDRShakeExtentsInterval", NULL, NULL,
477                             (BYTE *) &dummy, &dummyLen);
478     if (code == ERROR_SUCCESS && dummy)
479         cm_daemonRDRShakeExtentsInterval = dummy;
480     afsi_log("daemonRDRShakeExtentsInterval is %d", cm_daemonRDRShakeExtentsInterval);
481
482     dummyLen = sizeof(DWORD);
483     code = RegQueryValueEx(parmKey, "daemonPerformanceTuningInterval", NULL, NULL,
484                             (BYTE *) &dummy, &dummyLen);
485     if (code == ERROR_SUCCESS)
486         cm_daemonPerformanceTuningInterval = dummy;
487     afsi_log("daemonPerformanceTuningInterval is %d", cm_daemonPerformanceTuningInterval);
488
489     dummyLen = sizeof(DWORD);
490     code = RegQueryValueEx(parmKey, "daemonRankServerInterval", NULL, NULL,
491                             (BYTE *) &dummy, &dummyLen);
492     if (code == ERROR_SUCCESS && dummy)
493         cm_daemonRankServerInterval = dummy;
494     afsi_log("daemonRankServerInterval is %d", cm_daemonRankServerInterval);
495
496     dummyLen = sizeof(DWORD);
497     code = RegQueryValueEx(parmKey, "daemonAfsdHookReloadInterval", NULL, NULL,
498                             (BYTE *) &dummy, &dummyLen);
499     if (code == ERROR_SUCCESS && dummy)
500         cm_daemonAfsdHookReloadInterval = dummy;
501     afsi_log("daemonAfsdHookReloadInterval is %d", cm_daemonAfsdHookReloadInterval);
502
503     RegCloseKey(parmKey);
504
505     if (cm_daemonPerformanceTuningInterval)
506         cm_PerformanceTuningInit();
507 }
508
509 /* periodic lock check daemon */
510 void * cm_LockDaemon(void * vparm)
511 {
512     time_t now;
513     time_t lastLockCheck;
514     char * name = "cm_LockDaemon_ShutdownEvent";
515
516     cm_LockDaemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
517     if ( GetLastError() == ERROR_ALREADY_EXISTS )
518         afsi_log("Event Object Already Exists: %s", name);
519
520     now = osi_Time();
521     lastLockCheck = now - cm_daemonCheckLockInterval/2 + (rand() % cm_daemonCheckLockInterval);
522
523     while (daemon_ShutdownFlag == 0) {
524         if (powerStateSuspended) {
525             Sleep(1000);
526             continue;
527         }
528
529         now = osi_Time();
530
531         if (now > lastLockCheck + cm_daemonCheckLockInterval &&
532             daemon_ShutdownFlag == 0 &&
533             powerStateSuspended == 0) {
534             lastLockCheck = now;
535             cm_CheckLocks();
536             if (daemon_ShutdownFlag == 1)
537                 break;
538         }
539
540         thrd_Sleep(1000);               /* sleep 1 second */
541     }
542     thrd_SetEvent(cm_LockDaemon_ShutdownEvent);
543     pthread_exit(NULL);
544     return NULL;
545 }
546
547 /* periodic check daemon */
548 void * cm_Daemon(void *vparm)
549 {
550     time_t now;
551     time_t lastVolCheck;
552     time_t lastCBExpirationCheck;
553     time_t lastVolCBRenewalCheck;
554     time_t lastDownServerCheck;
555     time_t lastUpServerCheck;
556     time_t lastTokenCacheCheck;
557     time_t lastBusyVolCheck;
558     time_t lastPerformanceCheck;
559     time_t lastServerRankCheck;
560     time_t lastRDRShakeExtents;
561     time_t lastAfsdHookReload;
562     time_t lastEAccesCheck;
563     char thostName[200];
564     unsigned long code;
565     struct hostent *thp;
566     HMODULE hHookDll = NULL;
567     AfsdDaemonHook daemonHook = NULL;
568     char * name = "cm_Daemon_ShutdownEvent";
569     int configureFirewall = IsWindowsFirewallPresent();
570     int bAddrChangeCheck = 0;
571
572     cm_Daemon_ShutdownEvent = thrd_CreateEvent(NULL, FALSE, FALSE, name);
573     if ( GetLastError() == ERROR_ALREADY_EXISTS )
574         afsi_log("Event Object Already Exists: %s", name);
575
576     if (!configureFirewall) {
577         afsi_log("No Windows Firewall detected");
578     }
579
580     if (cm_freelanceEnabled && cm_freelanceImportCellServDB)
581         cm_FreelanceImportCellServDB();
582
583     /* ping all file servers, up or down, with unauthenticated connection,
584      * to find out whether we have all our callbacks from the server still.
585      * Also, ping down VLDBs.
586      */
587     /*
588      * Seed the random number generator with our own address, so that
589      * clients starting at the same time don't all do vol checks at the
590      * same time.
591      */
592     gethostname(thostName, sizeof(thostName));
593     thp = gethostbyname(thostName);
594     if (thp == NULL)    /* In djgpp, gethostname returns the netbios
595                            name of the machine.  gethostbyname will fail
596                            looking this up if it differs from DNS name. */
597         code = 0;
598     else
599         memcpy(&code, thp->h_addr_list[0], 4);
600
601     srand(ntohl(code));
602
603     cm_DaemonCheckInit();
604
605     now = osi_Time();
606     lastVolCheck = now - cm_daemonCheckVolInterval/2 + (rand() % cm_daemonCheckVolInterval);
607     lastCBExpirationCheck = now - cm_daemonCheckCBInterval/2 + (rand() % cm_daemonCheckCBInterval);
608     if (cm_daemonCheckVolCBInterval)
609         lastVolCBRenewalCheck = now - cm_daemonCheckVolCBInterval/2 + (rand() % cm_daemonCheckVolCBInterval);
610     lastDownServerCheck = now - cm_daemonCheckDownInterval/2 + (rand() % cm_daemonCheckDownInterval);
611     lastUpServerCheck = now - cm_daemonCheckUpInterval/2 + (rand() % cm_daemonCheckUpInterval);
612     lastTokenCacheCheck = now - cm_daemonTokenCheckInterval/2 + (rand() % cm_daemonTokenCheckInterval);
613     if (cm_daemonCheckOfflineVolInterval)
614         lastBusyVolCheck = now - cm_daemonCheckOfflineVolInterval/2 * (rand() % cm_daemonCheckOfflineVolInterval);
615     if (cm_daemonPerformanceTuningInterval)
616         lastPerformanceCheck = now - cm_daemonPerformanceTuningInterval/2 * (rand() % cm_daemonPerformanceTuningInterval);
617     lastServerRankCheck = now - cm_daemonRankServerInterval/2 * (rand() % cm_daemonRankServerInterval);
618     if (cm_daemonRDRShakeExtentsInterval)
619         lastRDRShakeExtents = now - cm_daemonRDRShakeExtentsInterval/2 * (rand() % cm_daemonRDRShakeExtentsInterval);
620     if (cm_daemonAfsdHookReloadInterval)
621         lastAfsdHookReload = now;
622     lastEAccesCheck = now;
623
624     hHookDll = cm_LoadAfsdHookLib();
625     if (hHookDll)
626         daemonHook = ( AfsdDaemonHook ) GetProcAddress(hHookDll, AFSD_DAEMON_HOOK);
627
628     while (daemon_ShutdownFlag == 0) {
629         if (powerStateSuspended) {
630             Sleep(1000);
631             continue;
632         }
633         /* check to see if the listener threads halted due to network
634          * disconnect or other issues.  If so, attempt to restart them.
635          */
636         smb_RestartListeners(0);
637
638         if (daemon_ShutdownFlag == 1)
639             break;
640
641         if (configureFirewall) {
642             /* Open Microsoft Firewall to allow in port 7001 */
643             switch (icf_CheckAndAddAFSPorts(AFS_PORTSET_CLIENT)) {
644             case 0:
645                 afsi_log("Windows Firewall Configuration succeeded");
646                 configureFirewall = 0;
647                 break;
648             case 1:
649                 afsi_log("Invalid Windows Firewall Port Set");
650                 break;
651             case 2:
652                 afsi_log("Unable to open Windows Firewall Profile");
653                 break;
654             case 3:
655                 afsi_log("Unable to create/modify Windows Firewall Port entries");
656                 break;
657             default:
658                 afsi_log("Unknown Windows Firewall Configuration error");
659             }
660         }
661
662         /* find out what time it is */
663         now = osi_Time();
664
665         /* Determine whether an address change took place that we need to respond to */
666         if (bAddrChangeCheck)
667             bAddrChangeCheck = 0;
668
669         if (lastIPAddrChange != 0 && lastIPAddrChange + 2500 < now) {
670             bAddrChangeCheck = 1;
671             lastIPAddrChange = 0;
672         }
673
674         /* check down servers */
675         if ((bAddrChangeCheck || now > lastDownServerCheck + cm_daemonCheckDownInterval) &&
676             daemon_ShutdownFlag == 0 &&
677             powerStateSuspended == 0) {
678             lastDownServerCheck = now;
679             osi_Log0(afsd_logp, "cm_Daemon CheckDownServers");
680             cm_CheckServers(CM_FLAG_CHECKDOWNSERVERS, NULL);
681             if (daemon_ShutdownFlag == 1)
682                 break;
683             now = osi_Time();
684         }
685
686         if (bAddrChangeCheck &&
687             daemon_ShutdownFlag == 0 &&
688             powerStateSuspended == 0) {
689             cm_ForceNewConnectionsAllServers();
690         }
691
692         /* check up servers */
693         if ((bAddrChangeCheck || now > lastUpServerCheck + cm_daemonCheckUpInterval) &&
694             daemon_ShutdownFlag == 0 &&
695             powerStateSuspended == 0) {
696             lastUpServerCheck = now;
697             osi_Log0(afsd_logp, "cm_Daemon CheckUpServers");
698             cm_CheckServers(CM_FLAG_CHECKUPSERVERS, NULL);
699             if (daemon_ShutdownFlag == 1)
700                 break;
701             now = osi_Time();
702         }
703
704         if (bAddrChangeCheck &&
705             daemon_ShutdownFlag == 0 &&
706             powerStateSuspended == 0) {
707             smb_CheckVCs();
708             cm_VolStatus_Network_Addr_Change();
709         }
710
711         /*
712          * Once every five minutes inspect the volume list and enforce
713          * the volume location expiration time.
714          */
715         if (now > lastVolCheck + 300 &&
716             daemon_ShutdownFlag == 0 &&
717             powerStateSuspended == 0) {
718             lastVolCheck = now;
719             cm_RefreshVolumes(cm_daemonCheckVolInterval);
720             if (daemon_ShutdownFlag == 1)
721                 break;
722             now = osi_Time();
723         }
724
725         /* Rank all up servers */
726         if ((now > lastServerRankCheck + cm_daemonRankServerInterval) &&
727             daemon_ShutdownFlag == 0 &&
728             powerStateSuspended == 0) {
729             lastServerRankCheck = now;
730             osi_Log0(afsd_logp, "cm_Daemon RankServer");
731             cm_RankUpServers();
732             if(daemon_ShutdownFlag == 1)
733                 break;
734             now = osi_Time();
735         }
736
737         if (cm_daemonCheckVolCBInterval &&
738             now > lastVolCBRenewalCheck + cm_daemonCheckVolCBInterval &&
739             daemon_ShutdownFlag == 0 &&
740             powerStateSuspended == 0) {
741             lastVolCBRenewalCheck = now;
742             cm_VolumeRenewROCallbacks();
743             if (daemon_ShutdownFlag == 1)
744                 break;
745             now = osi_Time();
746         }
747
748         if ((bAddrChangeCheck || (cm_daemonCheckOfflineVolInterval &&
749                                   now > lastBusyVolCheck + cm_daemonCheckOfflineVolInterval)) &&
750             daemon_ShutdownFlag == 0 &&
751             powerStateSuspended == 0) {
752             lastBusyVolCheck = now;
753             cm_CheckOfflineVolumes();
754             if (daemon_ShutdownFlag == 1)
755                 break;
756             now = osi_Time();
757         }
758
759         if (now > lastCBExpirationCheck + cm_daemonCheckCBInterval &&
760             daemon_ShutdownFlag == 0 &&
761             powerStateSuspended == 0) {
762             lastCBExpirationCheck = now;
763             cm_CheckCBExpiration();
764             if (daemon_ShutdownFlag == 1)
765                 break;
766             now = osi_Time();
767         }
768
769         if (now > lastTokenCacheCheck + cm_daemonTokenCheckInterval &&
770             daemon_ShutdownFlag == 0 &&
771             powerStateSuspended == 0) {
772             lastTokenCacheCheck = now;
773             cm_CheckTokenCache(now);
774             if (daemon_ShutdownFlag == 1)
775                 break;
776             now = osi_Time();
777         }
778
779         if (now > lastEAccesCheck + cm_daemonEAccesCheckInterval &&
780              daemon_ShutdownFlag == 0 &&
781              powerStateSuspended == 0) {
782             lastEAccesCheck = now;
783             cm_EAccesClearOutdatedEntries();
784             if (daemon_ShutdownFlag == 1)
785                 break;
786             now = osi_Time();
787         }
788
789         if (cm_daemonRDRShakeExtentsInterval &&
790             now > lastRDRShakeExtents + cm_daemonRDRShakeExtentsInterval &&
791             daemon_ShutdownFlag == 0 &&
792             powerStateSuspended == 0) {
793             cm_req_t req;
794             cm_InitReq(&req);
795             lastRDRShakeExtents = now;
796             if (cm_data.buf_redirCount > cm_data.buf_freeCount)
797                 buf_RDRShakeSomeExtentsFree(&req, FALSE, 10 /* seconds */);
798             if (daemon_ShutdownFlag == 1)
799                 break;
800             now = osi_Time();
801         }
802
803         /* allow an exit to be called prior to stopping the service */
804         if (cm_daemonAfsdHookReloadInterval &&
805             lastAfsdHookReload != 0 && lastAfsdHookReload < now) {
806             if (hHookDll) {
807                 FreeLibrary(hHookDll);
808                 hHookDll = NULL;
809                 daemonHook = NULL;
810             }
811
812             hHookDll = cm_LoadAfsdHookLib();
813             if (hHookDll)
814                 daemonHook = ( AfsdDaemonHook ) GetProcAddress(hHookDll, AFSD_DAEMON_HOOK);
815         }
816
817         if (daemonHook)
818         {
819             BOOL hookRc = daemonHook();
820
821             if (hookRc == FALSE)
822             {
823                 SetEvent(WaitToTerminate);
824             }
825
826             if (daemon_ShutdownFlag == 1) {
827                 break;
828             }
829             now = osi_Time();
830         }
831
832         if (cm_daemonPerformanceTuningInterval &&
833             now > lastPerformanceCheck + cm_daemonPerformanceTuningInterval &&
834             daemon_ShutdownFlag == 0 &&
835             powerStateSuspended == 0) {
836             lastPerformanceCheck = now;
837             cm_PerformanceTuningCheck();
838             if (daemon_ShutdownFlag == 1)
839                 break;
840             now = osi_Time();
841         }
842
843         /*
844          * sleep .5 seconds.  if the thread blocks for a long time
845          * we risk not being able to close the cache before Windows
846          * kills our process during system shutdown.
847          */
848         thrd_Sleep(500);
849     }
850
851     if (hHookDll) {
852         FreeLibrary(hHookDll);
853     }
854
855     thrd_SetEvent(cm_Daemon_ShutdownEvent);
856     pthread_exit(NULL);
857     return NULL;
858 }
859
860 void cm_DaemonShutdown(void)
861 {
862     int i;
863     DWORD code;
864
865     daemon_ShutdownFlag = 1;
866
867     /* wait for shutdown */
868     for ( i=0; i<cm_nDaemons; i++) {
869         osi_Wakeup((LONG_PTR) &cm_daemons[i].head);
870         if (cm_BkgDaemon_ShutdownEvent[i])
871             code = thrd_WaitForSingleObject_Event(cm_BkgDaemon_ShutdownEvent[i], INFINITE);
872     }
873
874     if (cm_Daemon_ShutdownEvent)
875         code = thrd_WaitForSingleObject_Event(cm_Daemon_ShutdownEvent, INFINITE);
876
877     if (cm_LockDaemon_ShutdownEvent)
878         code = thrd_WaitForSingleObject_Event(cm_LockDaemon_ShutdownEvent, INFINITE);
879
880 #if 0
881     /*
882      * Do not waste precious time waiting for the ipaddr daemon to shutdown.
883      * When it does it means we have lost our network connection and we need
884      * it during cache shutdown in order to notify the file servers that this
885      * client is giving up all callbacks.
886      */
887     if (cm_IPAddrDaemon_ShutdownEvent)
888         code = thrd_WaitForSingleObject_Event(cm_IPAddrDaemon_ShutdownEvent, INFINITE);
889 #endif
890 }
891
892 void cm_InitDaemon(int nDaemons)
893 {
894     static osi_once_t once;
895     pthread_t phandle;
896     pthread_attr_t tattr;
897     int pstatus;
898     int i;
899
900     pthread_attr_init(&tattr);
901     pthread_attr_setdetachstate(&tattr, PTHREAD_CREATE_DETACHED);
902
903     if (nDaemons > CM_MAX_DAEMONS)
904         cm_nDaemons = CM_MAX_DAEMONS;
905     else if (nDaemons < CM_MIN_DAEMONS)
906         cm_nDaemons = CM_MIN_DAEMONS;
907     else
908         cm_nDaemons = (nDaemons / 2) * 2; /* must be divisible by two */
909
910     if (osi_Once(&once)) {
911         /* creating IP Address Change monitor daemon */
912         pstatus = pthread_create(&phandle, &tattr, cm_IpAddrDaemon, 0);
913         osi_assertx(pstatus == 0, "cm_IpAddrDaemon thread creation failure");
914
915         /* creating pinging daemon */
916         pstatus = pthread_create(&phandle, &tattr, cm_Daemon, 0);
917         osi_assertx(pstatus == 0, "cm_Daemon thread creation failure");
918
919         pstatus = pthread_create(&phandle, &tattr, cm_LockDaemon, 0);
920         osi_assertx(pstatus == 0, "cm_LockDaemon thread creation failure");
921
922         cm_daemons = malloc(nDaemons * sizeof(daemon_state_t));
923
924         for(i=0; i < cm_nDaemons; i++) {
925             lock_InitializeRWLock(&cm_daemons[i].lock, "cm_daemonLock",
926                                   LOCK_HIERARCHY_DAEMON_GLOBAL);
927             cm_daemons[i].head = cm_daemons[i].tail = NULL;
928             cm_daemons[i].queueCount=0;
929             cm_daemons[i].completeCount=0;
930             cm_daemons[i].retryCount=0;
931             cm_daemons[i].errorCount=0;
932             pstatus = pthread_create(&phandle, &tattr, cm_BkgDaemon, (LPVOID)(LONG_PTR)i);
933             osi_assertx(pstatus == 0, "cm_BkgDaemon thread creation failure");
934         }
935         osi_EndOnce(&once);
936     }
937
938     pthread_attr_destroy(&tattr);
939 }