2 * Copyright 2000, International Business Machines Corporation and others.
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
10 #include <afsconfig.h>
11 #include <afs/param.h>
23 #include <netinet/in.h>
36 #include <afs/assert.h>
39 #include <afs/afsint.h>
40 #include <afs/rxgen_consts.h>
42 #include <afs/errors.h>
43 #include <afs/ihandle.h>
44 #include <afs/vnode.h>
45 #include <afs/volume.h>
46 #ifdef AFS_ATHENA_STDENV
50 #include <afs/ptclient.h>
51 #include <afs/prs_fs.h>
53 #include <afs/afsutil.h>
55 #include <afs/cellconfig.h>
57 #include "viced_prototypes.h"
62 #ifdef AFS_PTHREAD_ENV
63 pthread_mutex_t host_glock_mutex;
64 #endif /* AFS_PTHREAD_ENV */
67 extern int CurrentConnections;
69 extern int AnonymousID;
70 extern prlist AnonCPS;
72 extern struct afsconf_dir *confDir; /* config dir object */
73 extern int lwps; /* the max number of server threads */
74 extern afsUUID FS_HostUUID;
76 int CEs = 0; /* active clients */
77 int CEBlocks = 0; /* number of blocks of CEs */
78 struct client *CEFree = 0; /* first free client */
79 struct host *hostList = 0; /* linked list of all hosts */
80 int hostCount = 0; /* number of hosts in hostList */
84 #define CESPERBLOCK 73
85 struct CEBlock /* block of CESPERBLOCK file entries */
87 struct client entry[CESPERBLOCK];
91 * Make sure the subnet macros have been defined.
94 #define IN_SUBNETA(i) ((((afs_int32)(i))&0x80800000)==0x00800000)
97 #ifndef IN_CLASSA_SUBNET
98 #define IN_CLASSA_SUBNET 0xffff0000
102 #define IN_SUBNETB(i) ((((afs_int32)(i))&0xc0008000)==0x80008000)
105 #ifndef IN_CLASSB_SUBNET
106 #define IN_CLASSB_SUBNET 0xffffff00
109 #define rxr_GetEpoch(aconn) (((struct rx_connection *)(aconn))->epoch)
111 #define rxr_CidOf(aconn) (((struct rx_connection *)(aconn))->cid)
113 #define rxr_PortOf(aconn) \
114 rx_PortOf(rx_PeerOf(((struct rx_connection *)(aconn))))
116 #define rxr_HostOf(aconn) \
117 rx_HostOf(rx_PeerOf((struct rx_connection *)(aconn)))
120 /* get a new block of CEs and chain it on CEFree */
121 static void GetCEBlock()
123 register struct CEBlock *block;
126 block = (struct CEBlock *)malloc(sizeof(struct CEBlock));
128 ViceLog(0, ("Failed malloc in GetCEBlock\n"));
129 ShutDownAndCore(PANIC);
132 for(i = 0; i < (CESPERBLOCK -1); i++) {
133 Lock_Init(&block->entry[i].lock);
134 block->entry[i].next = &(block->entry[i+1]);
136 block->entry[CESPERBLOCK-1].next = 0;
137 Lock_Init(&block->entry[CESPERBLOCK-1].lock);
138 CEFree = (struct client *)block;
144 /* get the next available CE */
145 static struct client *GetCE()
147 register struct client *entry;
152 ViceLog(0, ("CEFree NULL in GetCE\n"));
153 ShutDownAndCore(PANIC);
157 CEFree = entry->next;
159 memset((char *)entry, 0, CLIENT_TO_ZERO(entry));
165 /* return an entry to the free list */
166 static void FreeCE(register struct client *entry)
168 entry->next = CEFree;
175 * The HTs and HTBlocks variables were formerly static, but they are
176 * now referenced elsewhere in the FileServer.
178 int HTs = 0; /* active file entries */
179 int HTBlocks = 0; /* number of blocks of HTs */
180 static struct host *HTFree = 0; /* first free file entry */
183 * Hash tables of host pointers. We need two tables, one
184 * to map IP addresses onto host pointers, and another
185 * to map host UUIDs onto host pointers.
187 static struct h_hashChain *hostHashTable[h_HASHENTRIES];
188 static struct h_hashChain *hostUuidHashTable[h_HASHENTRIES];
189 #define h_HashIndex(hostip) ((hostip) & (h_HASHENTRIES-1))
190 #define h_UuidHashIndex(uuidp) (((int)(afs_uuid_hash(uuidp))) & (h_HASHENTRIES-1))
192 struct HTBlock /* block of HTSPERBLOCK file entries */
194 struct host entry[h_HTSPERBLOCK];
198 /* get a new block of HTs and chain it on HTFree */
199 static void GetHTBlock()
201 register struct HTBlock *block;
203 static int index = 0;
205 block = (struct HTBlock *)malloc(sizeof(struct HTBlock));
207 ViceLog(0, ("Failed malloc in GetHTBlock\n"));
208 ShutDownAndCore(PANIC);
211 #ifdef AFS_PTHREAD_ENV
212 for(i=0; i < (h_HTSPERBLOCK); i++)
213 assert(pthread_cond_init(&block->entry[i].cond, NULL) == 0);
214 #endif /* AFS_PTHREAD_ENV */
215 for(i=0; i < (h_HTSPERBLOCK); i++)
216 Lock_Init(&block->entry[i].lock);
217 for(i=0; i < (h_HTSPERBLOCK -1); i++)
218 block->entry[i].next = &(block->entry[i+1]);
219 for (i=0; i< (h_HTSPERBLOCK); i++)
220 block->entry[i].index = index++;
221 block->entry[h_HTSPERBLOCK-1].next = 0;
222 HTFree = (struct host *)block;
223 hosttableptrs[HTBlocks++] = block->entry;
228 /* get the next available HT */
229 static struct host *GetHT()
231 register struct host *entry;
237 HTFree = entry->next;
239 memset((char *)entry, 0, HOST_TO_ZERO(entry));
245 /* return an entry to the free list */
246 static void FreeHT(register struct host *entry)
248 entry->next = HTFree;
255 static short consolePort = 0;
257 int h_Release(register struct host *host)
266 * If this thread does not have a hold on this host AND
267 * if other threads also dont have any holds on this host AND
268 * If either the HOSTDELETED or CLIENTDELETED flags are set
271 int h_Release_r(register struct host *host)
274 if (!((host)->holds[h_holdSlot()] & ~h_holdbit()) ) {
275 if (! h_OtherHolds_r(host) ) {
276 /* must avoid masking this until after h_OtherHolds_r runs
277 but it should be run before h_TossStuff_r */
278 (host)->holds[h_holdSlot()] &= ~h_holdbit();
279 if ( (host->hostFlags & HOSTDELETED) ||
280 (host->hostFlags & CLIENTDELETED) ) {
284 (host)->holds[h_holdSlot()] &= ~h_holdbit();
286 (host)->holds[h_holdSlot()] &= ~h_holdbit();
291 int h_OtherHolds_r(register struct host *host)
293 register int i, bit, slot;
296 for (i = 0 ; i < h_maxSlots ; i++) {
297 if (host->holds[i] != ((i == slot) ? bit : 0)) {
304 int h_Lock_r(register struct host *host)
314 * returns 1 if already locked
315 * else returns locks and returns 0
318 int h_NBLock_r(register struct host *host)
320 struct Lock *hostLock = &host->lock;
325 if ( !(hostLock->excl_locked) && !(hostLock->readers_reading) )
326 hostLock->excl_locked = WRITE_LOCK;
330 LOCK_UNLOCK(hostLock)
339 #if FS_STATS_DETAILED
340 /*------------------------------------------------------------------------
341 * PRIVATE h_AddrInSameNetwork
344 * Given a target IP address and a candidate IP address (both
345 * in host byte order), return a non-zero value (1) if the
346 * candidate address is in a different network from the target
350 * a_targetAddr : Target address.
351 * a_candAddr : Candidate address.
354 * 1 if the candidate address is in the same net as the target,
358 * The target and candidate addresses are both in host byte
359 * order, NOT network byte order, when passed in. We return
360 * our value as a character, since that's the type of field in
361 * the host structure, where this info will be stored.
365 *------------------------------------------------------------------------*/
367 static char h_AddrInSameNetwork(afs_uint32 a_targetAddr, afs_uint32 a_candAddr)
368 { /*h_AddrInSameNetwork*/
370 afs_uint32 targetNet;
374 * Pull out the network and subnetwork numbers from the target
375 * and candidate addresses. We can short-circuit this whole
376 * affair if the target and candidate addresses are not of the
379 if (IN_CLASSA(a_targetAddr)) {
380 if (!(IN_CLASSA(a_candAddr))) {
383 targetNet = a_targetAddr & IN_CLASSA_NET;
384 candNet = a_candAddr & IN_CLASSA_NET;
387 if (IN_CLASSB(a_targetAddr)) {
388 if (!(IN_CLASSB(a_candAddr))) {
391 targetNet = a_targetAddr & IN_CLASSB_NET;
392 candNet = a_candAddr & IN_CLASSB_NET;
395 if (IN_CLASSC(a_targetAddr)) {
396 if (!(IN_CLASSC(a_candAddr))) {
399 targetNet = a_targetAddr & IN_CLASSC_NET;
400 candNet = a_candAddr & IN_CLASSC_NET;
403 targetNet = a_targetAddr;
404 candNet = a_candAddr;
405 } /*Class D address*/
408 * Now, simply compare the extracted net values for the two addresses
409 * (which at this point are known to be of the same class)
411 if (targetNet == candNet)
416 } /*h_AddrInSameNetwork*/
417 #endif /* FS_STATS_DETAILED */
422 h_gethostcps_r(register struct host *host, register afs_int32 now)
427 /* at this point, the host might not be locked, nor held */
428 /* make sure that we do not disappear behind the RPC */
429 if ( !(held = h_Held_r(host)) )
432 /* wait if somebody else is already doing the getCPS call */
433 while ( host->hostFlags & HCPS_INPROGRESS )
435 slept = 1; /* I did sleep */
436 host->hostFlags |= HCPS_WAITING; /* I am sleeping now */
437 #ifdef AFS_PTHREAD_ENV
438 pthread_cond_wait(&host->cond, &host_glock_mutex);
439 #else /* AFS_PTHREAD_ENV */
440 if (( code = LWP_WaitProcess( &(host->hostFlags ))) != LWP_SUCCESS)
441 ViceLog(0, ("LWP_WaitProcess returned %d\n", code));
442 #endif /* AFS_PTHREAD_ENV */
446 host->hostFlags |= HCPS_INPROGRESS; /* mark as CPSCall in progress */
447 if (host->hcps.prlist_val)
448 free(host->hcps.prlist_val); /* this is for hostaclRefresh */
449 host->hcps.prlist_val = NULL;
450 host->hcps.prlist_len = 0;
451 slept? (host->cpsCall = FT_ApproxTime()): (host->cpsCall = now );
454 code = pr_GetHostCPS(htonl(host->host), &host->hcps);
458 * Although ubik_Call (called by pr_GetHostCPS) traverses thru all protection servers
459 * and reevaluates things if no sync server or quorum is found we could still end up
460 * with one of these errors. In such case we would like to reevaluate the rpc call to
461 * find if there's cps for this guy. We treat other errors (except network failures
462 * ones - i.e. code < 0) as an indication that there is no CPS for this host. Ideally
463 * we could like to deal this problem the other way around (i.e. if code == NOCPS
464 * ignore else retry next time) but the problem is that there're other errors (i.e.
465 * EPERM) for which we don't want to retry and we don't know the whole code list!
467 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC) {
469 * We would have preferred to use a while loop and try again since ops in protected
470 * acls for this host will fail now but they'll be reevaluated on any subsequent
471 * call. The attempt to wait for a quorum/sync site or network error won't work
472 * since this problems really should only occurs during a complete fileserver
473 * restart. Since the fileserver will start before the ptservers (and thus before
474 * quorums are complete) clients will be utilizing all the fileserver's lwps!!
476 host->hcpsfailed = 1;
477 ViceLog(0, ("Warning: GetHostCPS failed (%d) for %x; will retry\n", code, host->host));
479 host->hcpsfailed = 0;
480 ViceLog(1, ("gethost: GetHostCPS failed (%d) for %x; ignored\n", code, host->host));
482 if (host->hcps.prlist_val)
483 free(host->hcps.prlist_val);
484 host->hcps.prlist_val = NULL;
485 host->hcps.prlist_len = 0; /* Make sure it's zero */
487 host->hcpsfailed = 0;
489 host->hostFlags &= ~HCPS_INPROGRESS;
490 /* signal all who are waiting */
491 if ( host->hostFlags & HCPS_WAITING) /* somebody is waiting */
493 host->hostFlags &= ~HCPS_WAITING;
494 #ifdef AFS_PTHREAD_ENV
495 assert(pthread_cond_broadcast(&host->cond) == 0);
496 #else /* AFS_PTHREAD_ENV */
497 if ( (code = LWP_NoYieldSignal( &(host->hostFlags) )) != LWP_SUCCESS )
498 ViceLog(0, ("LWP_NoYieldSignal returns %d\n", code));
499 #endif /* AFS_PTHREAD_ENV */
502 /* if we had held the host, release it now */
507 void h_flushhostcps(hostaddr, hport)
508 register afs_uint32 hostaddr, hport; /* net byte order */
510 register struct host *host;
514 host = h_Lookup_r(hostaddr, hport, &held);
516 host->hcpsfailed = 1;
527 * Allocate a host. It will be identified by the peer (ip,port) info in the
528 * rx connection provided. The host is returned held and locked
530 #define DEF_ROPCONS 2115
532 struct host *h_Alloc_r(register struct rx_connection *r_con)
535 struct servent *serverentry;
536 register index = h_HashIndex(rxr_HostOf(r_con));
537 register struct host *host;
538 static struct rx_securityClass *sc = 0;
540 struct h_hashChain* h_hashChain;
541 #if FS_STATS_DETAILED
542 afs_uint32 newHostAddr_HBO; /*New host IP addr, in host byte order*/
543 #endif /* FS_STATS_DETAILED */
547 h_hashChain = (struct h_hashChain*) malloc(sizeof(struct h_hashChain));
549 h_hashChain->hostPtr = host;
550 h_hashChain->addr = rxr_HostOf(r_con);
551 h_hashChain->next = hostHashTable[index];
552 hostHashTable[index] = h_hashChain;
554 host->host = rxr_HostOf(r_con);
555 host->port = rxr_PortOf(r_con);
556 if(consolePort == 0 ) { /* find the portal number for console */
557 #if defined(AFS_OSF_ENV)
558 serverentry = getservbyname("ropcons", "");
560 serverentry = getservbyname("ropcons", 0);
563 consolePort = serverentry->s_port;
565 consolePort = DEF_ROPCONS; /* Use a default */
567 if (host->port == consolePort) host->Console = 1;
568 /* Make a callback channel even for the console, on the off chance that it
569 makes a request that causes a break call back. It shouldn't. */
572 sc = rxnull_NewClientSecurityObject();
573 host->callback_rxcon = rx_NewConnection (host->host, host->port,
575 rx_SetConnDeadTime(host->callback_rxcon, 50);
576 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
578 now = host->LastCall = host->cpsCall = host->ActiveCall = FT_ApproxTime();
580 host->hcps.prlist_val = NULL;
581 host->hcps.prlist_len = 0;
582 host->hcps.prlist_val = NULL;
585 host->hcpsfailed = 0; /* save cycles */
586 h_gethostcps(host); /* do this under host lock */
588 host->FirstClient = 0;
591 h_InsertList_r(host); /* update global host List */
592 #if FS_STATS_DETAILED
594 * Compare the new host's IP address (in host byte order) with ours
595 * (the File Server's), remembering if they are in the same network.
597 newHostAddr_HBO = (afs_uint32)ntohl(host->host);
598 host->InSameNetwork = h_AddrInSameNetwork(FS_HostAddr_HBO,
600 #endif /* FS_STATS_DETAILED */
606 /* Lookup a host given an IP address and UDP port number. */
607 /* hostaddr and hport are in network order */
608 /* Note: host should be released by caller if 0 == *heldp and non-null */
609 /* hostaddr and hport are in network order */
610 struct host *h_Lookup_r(afs_uint32 hostaddr, afs_uint32 hport, int *heldp)
612 register afs_int32 now;
613 register struct host *host=0;
614 register struct h_hashChain* chain;
615 register index = h_HashIndex(hostaddr);
616 extern int hostaclRefresh;
619 for (chain=hostHashTable[index]; chain; chain=chain->next) {
620 host = chain->hostPtr;
622 if (!(host->hostFlags & HOSTDELETED) && chain->addr == hostaddr
623 && host->port == hport) {
624 *heldp = h_Held_r(host);
628 if (host->hostFlags & HOSTDELETED) {
635 now = FT_ApproxTime(); /* always evaluate "now" */
636 if (host->hcpsfailed || (host->cpsCall+hostaclRefresh < now )) {
638 * Every hostaclRefresh period (def 2 hrs) get the new
639 * membership list for the host. Note this could be the
640 * first time that the host is added to a group. Also
641 * here we also retry on previous legitimate hcps failures.
643 h_gethostcps_r(host,now);
653 /* Lookup a host given its UUID. */
654 struct host *h_LookupUuid_r(afsUUID *uuidp)
656 register struct host *host=0;
657 register struct h_hashChain* chain;
658 register index = h_UuidHashIndex(uuidp);
660 for (chain=hostUuidHashTable[index]; chain; chain=chain->next) {
661 host = chain->hostPtr;
663 if (!(host->hostFlags & HOSTDELETED) && host->interface
664 && afs_uuid_equal(&host->interface->uuid, uuidp)) {
675 * h_Hold_r: Establish a hold by the current LWP on this host--the host
676 * or its clients will not be physically deleted until all holds have
678 * NOTE: h_Hold_r is a macro defined in host.h.
681 /* h_TossStuff_r: Toss anything in the host structure (the host or
682 * clients marked for deletion. Called from r_Release ONLY.
683 * To be called, there must be no holds, and either host->deleted
684 * or host->clientDeleted must be set.
686 int h_TossStuff_r(register struct host *host)
688 register struct client **cp, *client;
691 /* if somebody still has this host held */
692 for (i=0; (i<h_maxSlots)&&(!(host)->holds[i]); i++);
696 /* ASSUMPTION: r_FreeConnection() does not yield */
697 for (cp = &host->FirstClient; (client = *cp); ) {
698 if ((host->hostFlags & HOSTDELETED) || client->deleted) {
699 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val) {
700 free(client->CPS.prlist_val);
701 client->CPS.prlist_val = NULL;
704 rx_SetSpecific(client->tcon, rxcon_client_key, (void *)0);
706 CurrentConnections--;
709 } else cp = &client->next;
712 /* We've just cleaned out all the deleted clients; clear the flag */
713 host->hostFlags &= ~CLIENTDELETED;
715 if (host->hostFlags & HOSTDELETED) {
716 register struct h_hashChain **hp, *th;
717 register struct rx_connection *rxconn;
722 if (host->Console & 1) Console--;
723 if ((rxconn = host->callback_rxcon)) {
724 host->callback_rxcon = (struct rx_connection *)0;
726 * If rx_DestroyConnection calls h_FreeConnection we will
727 * deadlock on the host_glock_mutex. Work around the problem
728 * by unhooking the client from the connection before
729 * destroying the connection.
731 client = rx_GetSpecific(rxconn, rxcon_client_key);
732 if (client && client->tcon == rxconn)
734 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
735 rx_DestroyConnection(rxconn);
737 if (host->hcps.prlist_val)
738 free(host->hcps.prlist_val);
739 host->hcps.prlist_val = NULL;
740 host->hcps.prlist_len = 0;
741 DeleteAllCallBacks_r(host, 1);
742 host->hostFlags &= ~RESETDONE; /* just to be safe */
744 /* if alternate addresses do not exist */
745 if ( !(host->interface) )
747 for (hp = &hostHashTable[h_HashIndex(host->host)];
748 (th = *hp); hp = &th->next)
751 if (th->hostPtr == host)
754 h_DeleteList_r(host);
762 /* delete all hash entries for the UUID */
763 uuidp = &host->interface->uuid;
764 for (hp = &hostUuidHashTable[h_UuidHashIndex(uuidp)];
765 (th = *hp); hp = &th->next) {
767 if (th->hostPtr == host)
774 /* delete all hash entries for alternate addresses */
775 assert(host->interface->numberOfInterfaces > 0 );
776 for ( i=0; i < host->interface->numberOfInterfaces; i++)
778 hostAddr = host->interface->addr[i];
779 for (hp = &hostHashTable[h_HashIndex(hostAddr)];
780 (th = *hp); hp = &th->next)
783 if (th->hostPtr == host)
791 free(host->interface);
792 host->interface = NULL;
793 h_DeleteList_r(host); /* remove host from global host List */
795 } /* if alternate address exists */
800 /* Called by rx when a server connection disappears */
801 int h_FreeConnection(struct rx_connection *tcon)
803 register struct client *client;
805 client = (struct client *) rx_GetSpecific(tcon, rxcon_client_key);
808 if (client->tcon == tcon)
809 client->tcon = (struct rx_connection *)0;
812 } /*h_FreeConnection*/
815 /* h_Enumerate: Calls (*proc)(host, held, param) for at least each host in the
816 * system at the start of the enumeration (perhaps more). Hosts may be deleted
817 * (have delete flag set); ditto for clients. (*proc) is always called with
818 * host h_held(). The hold state of the host with respect to this lwp is passed
819 * to (*proc) as the param held. The proc should return 0 if the host should be
820 * released, 1 if it should be held after enumeration.
822 void h_Enumerate(int (*proc)(), char *param)
824 register struct host *host, **list;
826 register int i, count;
829 if (hostCount == 0) {
833 list = (struct host **)malloc(hostCount * sizeof(struct host *));
834 assert(list != NULL);
835 held = (int *)malloc(hostCount * sizeof(int));
836 assert(held != NULL);
837 for (count = 0, host = hostList ; host ; host = host->next, count++) {
839 if (!(held[count] = h_Held_r(host)))
842 assert(count == hostCount);
844 for ( i = 0 ; i < count ; i++) {
845 held[i] = (*proc)(list[i], held[i], param);
847 h_Release(list[i]);/* this might free up the host */
853 /* h_Enumerate_r (revised):
854 * Calls (*proc)(host, held, param) for each host in hostList, starting
856 * Hosts may be deleted (have delete flag set); ditto for clients.
857 * (*proc) is always called with
858 * host h_held() and the global host lock (H_LOCK) locked.The hold state of the
859 * host with respect to this lwp is passed to (*proc) as the param held.
860 * The proc should return 0 if the host should be released, 1 if it should
861 * be held after enumeration.
863 void h_Enumerate_r(int (*proc)(), struct host* enumstart, char *param)
865 register struct host *host;
868 if (hostCount == 0) {
871 for (host = enumstart ; host ; host = host->next) {
872 if (!(held = h_Held_r(host)))
874 held = (*proc)(host, held, param);
876 h_Release_r(host);/* this might free up the host */
880 /* inserts a new HashChain structure corresponding to this UUID */
881 void hashInsertUuid_r(struct afsUUID *uuid, struct host* host)
884 struct h_hashChain* chain;
886 /* hash into proper bucket */
887 index = h_UuidHashIndex(uuid);
889 /* insert into beginning of list for this bucket */
890 chain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
892 chain->hostPtr = host;
893 chain->next = hostUuidHashTable[index];
894 hostUuidHashTable[index] = chain;
897 /* Host is returned held */
898 struct host *h_GetHost_r(struct rx_connection *tcon)
901 struct host *oldHost;
904 struct interfaceAddr interf;
906 struct Identity *identP = NULL;
910 char hoststr[16], hoststr2[16];
912 haddr = rxr_HostOf(tcon);
913 hport = rxr_PortOf(tcon);
916 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
917 host = h_Lookup_r(haddr, hport, &held);
918 if (host && !identP && !(host->Console&1)) {
919 /* This is a new connection, and we already have a host
920 * structure for this address. Verify that the identity
921 * of the caller matches the identity in the host structure.
924 if ( !(host->hostFlags & ALTADDR) )
926 /* Another thread is doing initialization */
928 if ( !held) h_Release_r(host);
929 ViceLog(125, ("Host %s:%d starting h_Lookup again\n",
930 afs_inet_ntoa_r(host->host, hoststr), host->port));
933 host->hostFlags &= ~ALTADDR;
935 code = RXAFSCB_WhoAreYou(host->callback_rxcon, &interf);
937 if ( code == RXGEN_OPCODE ) {
938 identP = (struct Identity *)malloc(sizeof(struct Identity));
940 rx_SetSpecific(tcon, rxcon_ident_key, identP);
941 /* The host on this connection was unable to respond to
942 * the WhoAreYou. We will treat this as a new connection
943 * from the existing host. The worst that can happen is
944 * that we maintain some extra callback state information */
945 if (host->interface) {
947 ("Host %s:%d used to support WhoAreYou, deleting.\n",
948 afs_inet_ntoa_r(host->host, hoststr), host->port));
949 host->hostFlags |= HOSTDELETED;
951 if (!held) h_Release_r(host);
955 } else if (code == 0) {
957 identP = (struct Identity *)malloc(sizeof(struct Identity));
959 identP->uuid = interf.uuid;
960 rx_SetSpecific(tcon, rxcon_ident_key, identP);
961 /* Check whether the UUID on this connection matches
962 * the UUID in the host structure. If they don't match
963 * then this is not the same host as before. */
964 if ( !host->interface
965 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid) ) {
967 ("Host %s:%d has changed its identity, deleting.\n",
968 afs_inet_ntoa_r(host->host, hoststr), host->port));
969 host->hostFlags |= HOSTDELETED;
971 if (!held) h_Release_r(host);
976 afs_inet_ntoa_r(host->host, hoststr);
977 ViceLog(0,("CB: WhoAreYou failed for %s:%d, error %d\n",
978 hoststr, ntohs(host->port), code));
979 host->hostFlags |= VENUSDOWN;
981 host->hostFlags |= ALTADDR;
984 if ( ! (host->hostFlags & ALTADDR) )
986 /* another thread is doing the initialisation */
987 ViceLog(125, ("Host %s:%d waiting for host-init to complete\n",
988 afs_inet_ntoa_r(host->host, hoststr), host->port));
991 if ( !held) h_Release_r(host);
992 ViceLog(125, ("Host %s:%d starting h_Lookup again\n",
993 afs_inet_ntoa_r(host->host, hoststr), host->port));
996 /* We need to check whether the identity in the host structure
997 * matches the identity on the connection. If they don't match
998 * then treat this a new host. */
999 if ( !(host->Console&1)
1000 && ( ( !identP->valid && host->interface )
1001 || ( identP->valid && !host->interface )
1003 && !afs_uuid_equal(&identP->uuid, &host->interface->uuid) ) ) )
1005 char uuid1[128], uuid2[128];
1006 /* The host in the cache is not the host for this connection */
1007 host->hostFlags |= HOSTDELETED;
1009 if (!held) h_Release_r(host);
1012 afsUUID_to_string(identP->uuid, uuid1, 127);
1013 if (host->interface)
1014 afsUUID_to_string(host->interface->uuid, uuid2, 127);
1016 ("CB: new identity for host %s:%d, deleting(%x %x %s %s)\n",
1017 afs_inet_ntoa_r(host->host, hoststr), host->port,
1018 identP->valid, host->interface, identP->valid ? uuid1 :
1019 "", host->interface ? uuid2 : ""));
1023 host = h_Alloc_r(tcon); /* returned held and locked */
1024 h_gethostcps_r(host,FT_ApproxTime());
1025 if (!(host->Console&1)) {
1026 if (!identP || !interfValid) {
1028 code = RXAFSCB_WhoAreYou(host->callback_rxcon, &interf);
1030 if ( code == RXGEN_OPCODE ) {
1031 identP = (struct Identity *)malloc(sizeof(struct Identity));
1033 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1035 ("Host %s:%d does not support WhoAreYou.\n",
1036 afs_inet_ntoa_r(host->host, hoststr), host->port));
1038 } else if (code == 0) {
1040 identP = (struct Identity *)malloc(sizeof(struct Identity));
1042 identP->uuid = interf.uuid;
1043 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1044 ViceLog(25, ("WhoAreYou success on %s:%d\n",
1045 afs_inet_ntoa_r(host->host, hoststr), host->port));
1048 if (code == 0 && !identP->valid) {
1050 code = RXAFSCB_InitCallBackState(host->callback_rxcon);
1052 } else if (code == 0) {
1053 oldHost = h_LookupUuid_r(&identP->uuid);
1055 /* This is a new address for an existing host. Update
1056 * the list of interfaces for the existing host and
1057 * delete the host structure we just allocated. */
1058 if (!(held = h_Held_r(oldHost)))
1061 ViceLog(25, ("CB: new addr %s:%d for old host %s:%d\n",
1062 afs_inet_ntoa_r(host->host, hoststr), host->port,
1063 afs_inet_ntoa_r(oldHost->host, hoststr2), oldHost->port));
1064 host->hostFlags |= HOSTDELETED;
1068 addInterfaceAddr_r(host, haddr);
1070 /* This really is a new host */
1071 hashInsertUuid_r(&identP->uuid, host);
1073 code = RXAFSCB_InitCallBackState3(host->callback_rxcon,
1077 ViceLog(25, ("InitCallBackState3 success on %s:%d\n",
1078 afs_inet_ntoa_r(host->host, hoststr), host->port));
1079 assert(interfValid == 1);
1080 initInterfaceAddr_r(host, &interf);
1085 afs_inet_ntoa_r(host->host, hoststr);
1086 ViceLog(0,("CB: RCallBackConnectBack failed for %s:%d\n",
1087 hoststr, ntohs(host->port)));
1088 host->hostFlags |= VENUSDOWN;
1091 host->hostFlags |= RESETDONE;
1094 host->hostFlags |= ALTADDR;/* host structure iniatilisation complete */
1102 static char localcellname[PR_MAXNAMELEN+1];
1103 char local_realm[AFS_REALM_SZ] = "";
1106 void h_InitHostPackage()
1108 afsconf_GetLocalCell (confDir, localcellname, PR_MAXNAMELEN);
1109 if (!local_realm[0]) {
1110 if (afs_krb_get_lrealm(local_realm, 0) != 0/*KSUCCESS*/) {
1111 ViceLog(0, ("afs_krb_get_lrealm failed, using %s.\n",localcellname));
1112 strcpy (local_realm, localcellname);
1115 rxcon_ident_key = rx_KeyCreate((rx_destructor_t)free);
1116 rxcon_client_key = rx_KeyCreate((rx_destructor_t)0);
1117 #ifdef AFS_PTHREAD_ENV
1118 assert(pthread_mutex_init(&host_glock_mutex, NULL) == 0);
1119 #endif /* AFS_PTHREAD_ENV */
1122 static int MapName_r(char *aname, char *acell, afs_int32 *aval)
1127 afs_int32 anamelen, cnamelen;
1131 anamelen=strlen(aname);
1132 if (anamelen >= PR_MAXNAMELEN)
1133 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
1135 lnames.namelist_len = 1;
1136 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
1137 lids.idlist_len = 0;
1138 lids.idlist_val = NULL;
1140 cnamelen=strlen(acell);
1142 if (strcasecmp(local_realm, acell) && strcasecmp(localcellname, acell)) {
1143 ViceLog(2, ("MapName: cell is foreign. cell=%s, localcell=%s, localrealm=%s\n",
1144 acell, localcellname, local_realm));
1145 if ((anamelen+cnamelen+1) >= PR_MAXNAMELEN) {
1146 ViceLog(2, ("MapName: Name too long, using AnonymousID for %s@%s\n",
1148 *aval = AnonymousID;
1151 foreign = 1; /* attempt cross-cell authentication */
1152 tname = (char *) malloc(anamelen+cnamelen+2);
1153 strcpy(tname, aname);
1154 tname[anamelen] = '@';
1155 strcpy(tname+anamelen+1, acell);
1156 lnames.namelist_val = (prname *) tname;
1161 code = pr_NameToId(&lnames, &lids);
1164 if (lids.idlist_val) {
1165 *aval = lids.idlist_val[0];
1166 if (*aval == AnonymousID) {
1167 ViceLog(2, ("MapName: NameToId on %s returns anonymousID\n", lnames.namelist_val));
1169 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
1171 ViceLog(0, ("MapName: NameToId on '%s' is unknown\n", lnames.namelist_val));
1177 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
1184 /* NOTE: this returns the client with a Shared lock */
1185 struct client *h_ID2Client(afs_int32 vid)
1187 register struct client *client;
1188 register struct host *host;
1192 for (host=hostList; host; host=host->next) {
1193 if (host->hostFlags & HOSTDELETED)
1195 for (client = host->FirstClient; client; client = client->next) {
1196 if (!client->deleted && client->ViceId == vid) {
1199 ObtainSharedLock(&client->lock);
1213 * Called by the server main loop. Returns a h_Held client, which must be
1214 * released later the main loop. Allocates a client if the matching one
1215 * isn't around. The client is returned with its reference count incremented
1216 * by one. The caller must call h_ReleaseClient_r when finished with
1219 struct client *h_FindClient_r(struct rx_connection *tcon)
1221 register struct client *client;
1222 register struct host *host;
1223 struct client *oldClient;
1228 #if (64-MAXKTCNAMELEN)
1229 ticket name length != 64
1233 char uname[PR_MAXNAMELEN];
1234 char tcell[MAXKTCREALMLEN];
1237 client = (struct client *) rx_GetSpecific(tcon, rxcon_client_key);
1238 if (client && !client->deleted) {
1240 h_Hold_r(client->host);
1241 if (client->prfail != 2) { /* Could add shared lock on client here */
1242 /* note that we don't have to lock entry in this path to
1243 * ensure CPS is initialized, since we don't call rxr_SetSpecific
1244 * until initialization is done, and we only get here if
1245 * rx_GetSpecific located the client structure.
1250 ObtainWriteLock(&client->lock); /* released at end */
1252 } else if (client) {
1256 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
1257 ViceLog(5,("FindClient: authenticating connection: authClass=%d\n",
1259 if (authClass == 1) {
1260 /* A bcrypt tickets, no longer supported */
1261 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
1262 viceid = AnonymousID;
1263 expTime = 0x7fffffff;
1264 } else if (authClass == 2) {
1267 /* kerberos ticket */
1268 code = rxkad_GetServerInfo (tcon, /*level*/0, &expTime,
1269 tname, tinst, tcell, &kvno);
1271 ViceLog(1, ("Failed to get rxkad ticket info\n"));
1272 viceid = AnonymousID;
1273 expTime = 0x7fffffff;
1275 int ilen = strlen(tinst);
1277 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
1278 tname, tinst, tcell, expTime, kvno));
1279 strncpy (uname, tname, sizeof(uname));
1281 if (strlen(uname) + 1 + ilen >= sizeof(uname))
1283 strcat (uname, ".");
1284 strcat (uname, tinst);
1286 /* translate the name to a vice id */
1287 code = MapName_r(uname, tcell, &viceid);
1290 ViceLog(1, ("failed to map name=%s, cell=%s -> code=%d\n",
1291 uname, tcell, code));
1293 viceid = AnonymousID;
1294 expTime = 0x7fffffff;
1298 viceid = AnonymousID; /* unknown security class */
1299 expTime = 0x7fffffff;
1303 host = h_GetHost_r(tcon); /* Returns it h_Held */
1305 /* First try to find the client structure */
1306 for (client = host->FirstClient; client; client = client->next) {
1307 if (!client->deleted && (client->sid == rxr_CidOf(tcon)) &&
1308 (client->VenusEpoch == rxr_GetEpoch(tcon))) {
1309 if (client->tcon && (client->tcon != tcon)) {
1310 ViceLog(0, ("*** Vid=%d, sid=%x, tcon=%x, Tcon=%x ***\n",
1311 client->ViceId, client->sid, client->tcon, tcon));
1312 client->tcon = (struct rx_connection *)0;
1316 ObtainWriteLock(&client->lock);
1322 /* Still no client structure - get one */
1325 ObtainWriteLock(&client->lock);
1326 client->host = host;
1327 client->next = host->FirstClient;
1328 host->FirstClient = client;
1329 #if FS_STATS_DETAILED
1330 client->InSameNetwork = host->InSameNetwork;
1331 #endif /* FS_STATS_DETAILED */
1332 client->ViceId = viceid;
1333 client->expTime = expTime; /* rx only */
1334 client->authClass = authClass; /* rx only */
1335 client->sid = rxr_CidOf(tcon);
1336 client->VenusEpoch = rxr_GetEpoch(tcon);
1337 client->CPS.prlist_val = 0;
1338 client->refCount = 1;
1339 CurrentConnections++; /* increment number of connections */
1342 client->prfail = fail;
1344 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
1345 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID)) {
1346 free(client->CPS.prlist_val);
1348 client->CPS.prlist_val = NULL;
1349 client->ViceId = viceid;
1350 client->expTime = expTime;
1352 if (viceid == ANONYMOUSID) {
1353 client->CPS.prlist_len = AnonCPS.prlist_len;
1354 client->CPS.prlist_val = AnonCPS.prlist_val;
1357 code = pr_GetCPS(viceid, &client->CPS);
1361 ViceLog(0, ("pr_GetCPS failed(%d) for user %d, host %s:%d\n",
1363 afs_inet_ntoa_r(client->host->host, hoststr),
1364 client->host->port));
1366 /* Although ubik_Call (called by pr_GetCPS) traverses thru
1367 * all protection servers and reevaluates things if no
1368 * sync server or quorum is found we could still end up
1369 * with one of these errors. In such case we would like to
1370 * reevaluate the rpc call to find if there's cps for this
1371 * guy. We treat other errors (except network failures
1372 * ones - i.e. code < 0) as an indication that there is no
1373 * CPS for this host. Ideally we could like to deal this
1374 * problem the other way around (i.e. if code == NOCPS
1375 * ignore else retry next time) but the problem is that
1376 * there're other errors (i.e. EPERM) for which we don't
1377 * want to retry and we don't know the whole code list!
1379 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
1383 /* the disabling of system:administrators is so iffy and has so many
1384 * possible failure modes that we will disable it again */
1385 /* Turn off System:Administrator for safety
1386 if (AL_IsAMember(SystemId, client->CPS) == 0)
1387 assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
1390 /* Now, tcon may already be set to a rock, since we blocked with no host
1391 * or client locks set above in pr_GetCPS (XXXX some locking is probably
1392 * required). So, before setting the RPC's rock, we should disconnect
1393 * the RPC from the other client structure's rock.
1395 if ((oldClient = (struct client *) rx_GetSpecific(tcon, rxcon_client_key))) {
1396 oldClient->tcon = (struct rx_connection *) 0;
1397 /* rx_SetSpecific will be done immediately below */
1399 client->tcon = tcon;
1400 rx_SetSpecific(tcon, rxcon_client_key, client);
1401 ReleaseWriteLock(&client->lock);
1405 } /*h_FindClient_r*/
1407 int h_ReleaseClient_r(struct client *client)
1409 assert(client->refCount > 0);
1416 * Sigh: this one is used to get the client AGAIN within the individual
1417 * server routines. This does not bother h_Holding the host, since
1418 * this is assumed already have been done by the server main loop.
1419 * It does check tokens, since only the server routines can return the
1420 * VICETOKENDEAD error code
1422 int GetClient(struct rx_connection * tcon, struct client **cp)
1424 register struct client *client;
1428 *cp = client = (struct client *) rx_GetSpecific(tcon, rxcon_client_key);
1429 if (!(client && client->tcon && rxr_CidOf(client->tcon) == client->sid)) {
1431 ViceLog(0, ("GetClient: no client in conn %x\n", tcon));
1433 ViceLog(0, ("GetClient: tcon %x tcon sid %d client sid %d\n",
1434 client->tcon, client->tcon ? rxr_CidOf(client->tcon)
1435 : -1, client->sid));
1439 client->LastCall > client->expTime && client->expTime) {
1441 ViceLog(1, ("Token for %s at %s:%d expired %d\n",
1443 afs_inet_ntoa_r(client->host->host, hoststr),
1444 client->host->port, client->expTime));
1446 return VICETOKENDEAD;
1455 /* Client user name for short term use. Note that this is NOT inexpensive */
1456 char *h_UserName(struct client *client)
1458 static char User[PR_MAXNAMELEN+1];
1462 lids.idlist_len = 1;
1463 lids.idlist_val = (afs_int32 *)malloc(1*sizeof(afs_int32));
1464 lnames.namelist_len = 0;
1465 lnames.namelist_val = (prname *)0;
1466 lids.idlist_val[0] = client->ViceId;
1467 if (pr_IdToName(&lids,&lnames)) {
1468 /* We need to free id we alloced above! */
1469 free(lids.idlist_val);
1470 return "*UNKNOWN USER NAME*";
1472 strncpy(User,lnames.namelist_val[0],PR_MAXNAMELEN);
1473 free(lids.idlist_val);
1474 free(lnames.namelist_val);
1483 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
1484 CEs, CEBlocks, HTs, HTBlocks));
1490 h_PrintClient(register struct host *host, int held, StreamHandle_t *file)
1492 register struct client *client;
1499 if (host->hostFlags & HOSTDELETED) {
1503 sprintf(tmpStr,"Host %s:%d down = %d, LastCall %s",
1504 afs_inet_ntoa_r(host->host, hoststr), host->port,
1505 (host->hostFlags & VENUSDOWN),
1506 afs_ctime((time_t *)&host->LastCall, tbuffer, sizeof(tbuffer)));
1507 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1508 for (client = host->FirstClient; client; client=client->next) {
1509 if (!client->deleted) {
1511 sprintf(tmpStr, " user id=%d, name=%s, sl=%s till %s",
1512 client->ViceId, h_UserName(client),
1513 client->authClass ? "Authenticated" : "Not authenticated",
1515 afs_ctime((time_t *)&client->expTime, tbuffer, sizeof(tbuffer))
1517 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1520 sprintf(tmpStr, " user=%s, no current server connection\n",
1521 h_UserName(client));
1522 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1524 sprintf(tmpStr, " CPS-%d is [", client->CPS.prlist_len);
1525 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1526 if (client->CPS.prlist_val) {
1527 for (i=0; i > client->CPS.prlist_len; i++) {
1528 sprintf(tmpStr, " %d", client->CPS.prlist_val[i]);
1529 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1532 sprintf(tmpStr, "]\n");
1533 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1544 * Print a list of clients, with last security level and token value seen,
1547 void h_PrintClients()
1553 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
1556 ViceLog(0, ("Couldn't create client dump file %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
1559 now = FT_ApproxTime();
1560 sprintf(tmpStr, "List of active users at %s\n",
1561 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
1562 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1563 h_Enumerate(h_PrintClient, (char *)file);
1564 STREAM_REALLYCLOSE(file);
1565 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
1572 h_DumpHost(register struct host *host, int held, StreamHandle_t *file)
1578 sprintf(tmpStr, "ip:%x port:%d hidx:%d cbid:%d lock:%x last:%u active:%u down:%d del:%d cons:%d cldel:%d\n\t hpfailed:%d hcpsCall:%u hcps [",
1579 host->host, host->port, host->index, host->cblist,
1580 CheckLock(&host->lock), host->LastCall, host->ActiveCall,
1581 (host->hostFlags & VENUSDOWN), host->hostFlags&HOSTDELETED,
1582 host->Console, host->hostFlags & CLIENTDELETED,
1583 host->hcpsfailed, host->cpsCall);
1584 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1585 if (host->hcps.prlist_val)
1586 for (i=0; i < host->hcps.prlist_len; i++) {
1587 sprintf(tmpStr, " %d", host->hcps.prlist_val[i]);
1588 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1590 sprintf(tmpStr, "] [");
1591 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1592 if ( host->interface)
1593 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1594 sprintf(tmpStr, " %x", host->interface->addr[i]);
1595 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1597 sprintf(tmpStr, "] holds: ");
1598 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1600 for (i = 0 ; i < h_maxSlots ; i++) {
1601 sprintf(tmpStr, "%04x", host->holds[i]);
1602 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1604 sprintf(tmpStr, " slot/bit: %d/%d\n", h_holdSlot(), h_holdbit());
1605 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1616 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
1621 ViceLog(0, ("Couldn't create host dump file %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
1624 now = FT_ApproxTime();
1625 sprintf(tmpStr, "List of active hosts at %s\n",
1626 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
1627 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1628 h_Enumerate(h_DumpHost, (char *) file);
1629 STREAM_REALLYCLOSE(file);
1630 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
1636 * This counts the number of workstations, the number of active workstations,
1637 * and the number of workstations declared "down" (i.e. not heard from
1638 * recently). An active workstation has received a call since the cutoff
1639 * time argument passed.
1642 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
1645 register struct host *host;
1646 register int num=0, active=0, del=0;
1649 for (host = hostList; host; host = host->next) {
1650 if (!(host->hostFlags & HOSTDELETED)) {
1652 if (host->ActiveCall > cutofftime)
1654 if (host->hostFlags & VENUSDOWN)
1666 } /*h_GetWorkStats*/
1669 /*------------------------------------------------------------------------
1670 * PRIVATE h_ClassifyAddress
1673 * Given a target IP address and a candidate IP address (both
1674 * in host byte order), classify the candidate into one of three
1675 * buckets in relation to the target by bumping the counters passed
1679 * a_targetAddr : Target address.
1680 * a_candAddr : Candidate address.
1681 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
1682 * addresses are either in the same network
1683 * or the same subnet.
1684 * a_diffSubnetP : ...when the candidate is in a different
1686 * a_diffNetworkP : ...when the candidate is in a different
1693 * The target and candidate addresses are both in host byte
1694 * order, NOT network byte order, when passed in.
1698 *------------------------------------------------------------------------*/
1700 static void h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
1701 afs_int32 *a_sameNetOrSubnetP,
1702 afs_int32 *a_diffSubnetP,
1703 afs_int32 *a_diffNetworkP)
1704 { /*h_ClassifyAddress*/
1706 register int i; /*Iterator thru host hash table*/
1707 register struct host *hostP; /*Ptr to current host entry*/
1708 register afs_uint32 currHostAddr; /*Current host address*/
1709 afs_uint32 targetNet;
1710 afs_uint32 targetSubnet;
1712 afs_uint32 candSubnet;
1715 * Put bad values into the subnet info to start with.
1717 targetSubnet = (afs_uint32) 0;
1718 candSubnet = (afs_uint32) 0;
1721 * Pull out the network and subnetwork numbers from the target
1722 * and candidate addresses. We can short-circuit this whole
1723 * affair if the target and candidate addresses are not of the
1726 if (IN_CLASSA(a_targetAddr)) {
1727 if (!(IN_CLASSA(a_candAddr))) {
1728 (*a_diffNetworkP)++;
1731 targetNet = a_targetAddr & IN_CLASSA_NET;
1732 candNet = a_candAddr & IN_CLASSA_NET;
1733 if (IN_SUBNETA(a_targetAddr))
1734 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
1735 if (IN_SUBNETA(a_candAddr))
1736 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
1739 if (IN_CLASSB(a_targetAddr)) {
1740 if (!(IN_CLASSB(a_candAddr))) {
1741 (*a_diffNetworkP)++;
1744 targetNet = a_targetAddr & IN_CLASSB_NET;
1745 candNet = a_candAddr & IN_CLASSB_NET;
1746 if (IN_SUBNETB(a_targetAddr))
1747 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
1748 if (IN_SUBNETB(a_candAddr))
1749 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
1750 } /*Class B target*/
1752 if (IN_CLASSC(a_targetAddr)) {
1753 if (!(IN_CLASSC(a_candAddr))) {
1754 (*a_diffNetworkP)++;
1757 targetNet = a_targetAddr & IN_CLASSC_NET;
1758 candNet = a_candAddr & IN_CLASSC_NET;
1761 * Note that class C addresses can't have subnets,
1762 * so we leave the defaults untouched.
1764 } /*Class C target*/
1766 targetNet = a_targetAddr;
1767 candNet = a_candAddr;
1768 } /*Class D address*/
1771 * Now, simply compare the extracted net and subnet values for
1772 * the two addresses (which at this point are known to be of the
1775 if (targetNet == candNet) {
1776 if (targetSubnet == candSubnet)
1777 (*a_sameNetOrSubnetP)++;
1782 (*a_diffNetworkP)++;
1784 } /*h_ClassifyAddress*/
1787 /*------------------------------------------------------------------------
1788 * EXPORTED h_GetHostNetStats
1791 * Iterate through the host table, and classify each (non-deleted)
1792 * host entry into ``proximity'' categories (same net or subnet,
1793 * different subnet, different network).
1796 * a_numHostsP : Set to total number of (non-deleted) hosts.
1797 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
1798 * a_diffSubnetP : Set to # hosts on diff subnet as server.
1799 * a_diffNetworkP : Set to # hosts on diff network as server.
1805 * We only count non-deleted hosts. The storage pointed to by our
1806 * parameters is zeroed upon entry.
1810 *------------------------------------------------------------------------*/
1812 void h_GetHostNetStats(afs_int32 *a_numHostsP, afs_int32 *a_sameNetOrSubnetP,
1813 afs_int32 *a_diffSubnetP, afs_int32 *a_diffNetworkP)
1814 { /*h_GetHostNetStats*/
1816 register struct host *hostP; /*Ptr to current host entry*/
1817 register afs_uint32 currAddr_HBO; /*Curr host addr, host byte order*/
1820 * Clear out the storage pointed to by our parameters.
1822 *a_numHostsP = (afs_int32) 0;
1823 *a_sameNetOrSubnetP = (afs_int32) 0;
1824 *a_diffSubnetP = (afs_int32) 0;
1825 *a_diffNetworkP = (afs_int32) 0;
1828 for (hostP = hostList; hostP; hostP = hostP->next) {
1829 if (!(hostP->hostFlags & HOSTDELETED)) {
1831 * Bump the number of undeleted host entries found.
1832 * In classifying the current entry's address, make
1833 * sure to first convert to host byte order.
1836 currAddr_HBO = (afs_uint32)ntohl(hostP->host);
1837 h_ClassifyAddress(FS_HostAddr_HBO,
1842 } /*Only look at non-deleted hosts*/
1843 } /*For each host record hashed to this index*/
1846 } /*h_GetHostNetStats*/
1848 static afs_uint32 checktime;
1849 static afs_uint32 clientdeletetime;
1850 static struct AFSFid zerofid;
1854 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
1855 * Since it can serialize them, and pile up, it should be a separate LWP
1856 * from other events.
1858 int CheckHost(register struct host *host, int held)
1860 register struct client *client;
1863 /* Host is held by h_Enumerate */
1865 for (client = host->FirstClient; client; client = client->next) {
1866 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
1867 client->deleted = 1;
1868 host->hostFlags |= CLIENTDELETED;
1871 if (host->LastCall < checktime) {
1873 if (!(host->hostFlags & HOSTDELETED)) {
1874 if (host->LastCall < clientdeletetime) {
1875 host->hostFlags |= HOSTDELETED;
1876 if (!(host->hostFlags & VENUSDOWN)) {
1877 host->hostFlags &= ~ALTADDR; /* alternate address invalid*/
1878 if (host->interface) {
1880 code = RXAFSCB_InitCallBackState3(host->callback_rxcon,
1885 code = RXAFSCB_InitCallBackState(host->callback_rxcon);
1888 host->hostFlags |= ALTADDR; /* alternate addresses valid */
1892 afs_inet_ntoa_r(host->host, hoststr);
1894 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
1895 hoststr, ntohs(host->port)));
1896 host->hostFlags |= VENUSDOWN;
1898 /* Note: it's safe to delete hosts even if they have call
1899 * back state, because break delayed callbacks (called when a
1900 * message is received from the workstation) will always send a
1901 * break all call backs to the workstation if there is no
1907 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
1908 if (host->interface) {
1909 afsUUID uuid = host->interface->uuid;
1911 code = RXAFSCB_ProbeUuid(host->callback_rxcon, &uuid);
1914 if ( MultiProbeAlternateAddress_r(host) ) {
1916 afs_inet_ntoa_r(host->host, hoststr);
1918 ("ProbeUuid failed for host %s:%d\n",
1919 hoststr, ntohs(host->port)));
1920 host->hostFlags |= VENUSDOWN;
1925 code = RXAFSCB_Probe(host->callback_rxcon);
1929 afs_inet_ntoa_r(host->host, hoststr);
1930 ViceLog(0, ("ProbeUuid failed for host %s:%d\n",
1931 hoststr, ntohs(host->port)));
1932 host->hostFlags |= VENUSDOWN;
1947 * Set VenusDown for any hosts that have not had a call in 15 minutes and
1948 * don't respond to a probe. Note that VenusDown can only be cleared if
1949 * a message is received from the host (see ServerLWP in file.c).
1950 * Delete hosts that have not had any calls in 1 hour, clients that
1951 * have not had any calls in 15 minutes.
1953 * This routine is called roughly every 5 minutes.
1955 void h_CheckHosts() {
1956 afs_uint32 now = FT_ApproxTime();
1958 memset((char *)&zerofid, 0, sizeof(zerofid));
1960 * Send a probe to the workstation if it hasn't been heard from in
1963 checktime = now - 15*60;
1964 clientdeletetime = now - 120*60; /* 2 hours ago */
1965 h_Enumerate(CheckHost, NULL);
1970 * This is called with host locked and held. At this point, the
1971 * hostHashTable should not be having entries for the alternate
1972 * interfaces. This function has to insert these entries in the
1975 * The addresses in the ineterfaceAddr list are in host byte order.
1978 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
1982 afs_int32 myPort, myHost;
1984 struct Interface *interface;
1989 ViceLog(125,("initInterfaceAddr : host %x numAddr %d\n",
1990 host->host, interf->numberOfInterfaces));
1992 number = interf->numberOfInterfaces;
1993 myPort = host->port;
1994 myHost = host->host; /* current interface address */
1996 /* validation checks */
1997 if ( number < 0 || number > AFS_MAX_INTERFACE_ADDR )
1999 ViceLog(0,("Number of alternate addresses returned is %d\n",
2005 * Convert IP addresses to network byte order, and remove for
2006 * duplicate IP addresses from the interface list.
2008 for (i = 0, count = 0, found = 0; i < number; i++)
2010 interf->addr_in[i] = htonl(interf->addr_in[i]);
2011 for (j = 0 ; j < count ; j++) {
2012 if (interf->addr_in[j] == interf->addr_in[i])
2016 interf->addr_in[count] = interf->addr_in[i];
2017 if (interf->addr_in[count] == myHost)
2024 * Allocate and initialize an interface structure for this host.
2027 interface = (struct Interface *)
2028 malloc(sizeof(struct Interface) +
2029 (sizeof(afs_int32) * (count-1)));
2031 interface->numberOfInterfaces = count;
2033 interface = (struct Interface *)
2034 malloc(sizeof(struct Interface) +
2035 (sizeof(afs_int32) * count));
2037 interface->numberOfInterfaces = count + 1;
2038 interface->addr[count] = myHost;
2040 interface->uuid = interf->uuid;
2041 for (i = 0 ; i < count ; i++)
2042 interface->addr[i] = interf->addr_in[i];
2044 assert(!host->interface);
2045 host->interface = interface;
2047 for ( i=0; i < host->interface->numberOfInterfaces; i++)
2049 ViceLog(125,("--- alt address %x\n", host->interface->addr[i]));
2055 /* inserts a new HashChain structure corresponding to this address */
2056 void hashInsert_r(afs_int32 addr, struct host* host)
2059 struct h_hashChain* chain;
2061 /* hash into proper bucket */
2062 index = h_HashIndex(addr);
2064 /* insert into beginning of list for this bucket */
2065 chain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
2067 chain->hostPtr = host;
2068 chain->next = hostHashTable[index];
2070 hostHashTable[index] = chain;
2075 * This is called with host locked and held. At this point, the
2076 * hostHashTable should not be having entries for the alternate
2077 * interfaces. This function has to insert these entries in the
2080 * All addresses are in network byte order.
2083 addInterfaceAddr_r(struct host *host, afs_int32 addr)
2088 struct Interface *interface;
2091 assert(host->interface);
2093 ViceLog(125,("addInterfaceAddr : host %x addr %d\n",
2097 * Make sure this address is on the list of known addresses
2100 number = host->interface->numberOfInterfaces;
2101 for ( i=0, found=0; i < number && !found; i++)
2103 if ( host->interface->addr[i] == addr)
2107 interface = (struct Interface *)
2108 malloc(sizeof(struct Interface) +
2109 (sizeof(afs_int32) * number));
2110 interface->numberOfInterfaces = number + 1;
2111 interface->uuid = host->interface->uuid;
2112 for (i = 0 ; i < number ; i++)
2113 interface->addr[i] = host->interface->addr[i];
2114 interface->addr[number] = addr;
2115 free(host->interface);
2116 host->interface = interface;
2120 * Create a hash table entry for this address
2122 hashInsert_r(addr, host);
2127 /* deleted a HashChain structure for this address and host */
2128 /* returns 1 on success */
2130 hashDelete_r(afs_int32 addr, struct host* host)
2134 register struct h_hashChain **hp, *th;
2136 for (hp = &hostHashTable[h_HashIndex(addr)]; (th = *hp); )
2138 assert(th->hostPtr);
2139 if (th->hostPtr == host && th->addr == addr)
2154 ** prints out all alternate interface address for the host. The 'level'
2155 ** parameter indicates what level of debugging sets this output
2158 printInterfaceAddr(struct host *host, int level)
2161 if ( host-> interface )
2163 /* check alternate addresses */
2164 number = host->interface->numberOfInterfaces;
2165 assert( number > 0 );
2166 for ( i=0; i < number; i++)
2167 ViceLog(level, ("%x ", host->interface->addr[i]));
2169 ViceLog(level, ("\n"));