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>
27 #include <afs/assert.h>
30 #include <afs/afsint.h>
31 #include <afs/rxgen_consts.h>
33 #include <afs/errors.h>
34 #include <afs/ihandle.h>
35 #include <afs/vnode.h>
36 #include <afs/volume.h>
37 #ifdef AFS_ATHENA_STDENV
41 #include <afs/ptclient.h>
42 #include <afs/prs_fs.h>
44 #include <afs/afsutil.h>
46 #include <afs/cellconfig.h>
52 #ifdef AFS_PTHREAD_ENV
53 pthread_mutex_t host_glock_mutex;
54 #endif /* AFS_PTHREAD_ENV */
57 extern int CurrentConnections;
59 extern int AnonymousID;
60 extern prlist AnonCPS;
62 extern struct afsconf_dir *confDir; /* config dir object */
63 extern int lwps; /* the max number of server threads */
64 extern afsUUID FS_HostUUID;
66 int CEs = 0; /* active clients */
67 int CEBlocks = 0; /* number of blocks of CEs */
68 struct client *CEFree = 0; /* first free client */
69 struct host *hostList = 0; /* linked list of all hosts */
70 int hostCount = 0; /* number of hosts in hostList */
74 #define CESPERBLOCK 73
75 struct CEBlock /* block of CESPERBLOCK file entries */
77 struct client entry[CESPERBLOCK];
81 * Make sure the subnet macros have been defined.
84 #define IN_SUBNETA(i) ((((afs_int32)(i))&0x80800000)==0x00800000)
87 #ifndef IN_CLASSA_SUBNET
88 #define IN_CLASSA_SUBNET 0xffff0000
92 #define IN_SUBNETB(i) ((((afs_int32)(i))&0xc0008000)==0x80008000)
95 #ifndef IN_CLASSB_SUBNET
96 #define IN_CLASSB_SUBNET 0xffffff00
99 #define rxr_GetEpoch(aconn) (((struct rx_connection *)(aconn))->epoch)
101 #define rxr_CidOf(aconn) (((struct rx_connection *)(aconn))->cid)
103 #define rxr_PortOf(aconn) \
104 rx_PortOf(rx_PeerOf(((struct rx_connection *)(aconn))))
106 #define rxr_HostOf(aconn) \
107 rx_HostOf(rx_PeerOf((struct rx_connection *)(aconn)))
110 /* get a new block of CEs and chain it on CEFree */
111 static void GetCEBlock()
113 register struct CEBlock *block;
116 block = (struct CEBlock *)malloc(sizeof(struct CEBlock));
118 ViceLog(0, ("Failed malloc in GetCEBlock\n"));
119 ShutDownAndCore(PANIC);
122 for(i = 0; i < (CESPERBLOCK -1); i++) {
123 Lock_Init(&block->entry[i].lock);
124 block->entry[i].next = &(block->entry[i+1]);
126 block->entry[CESPERBLOCK-1].next = 0;
127 Lock_Init(&block->entry[CESPERBLOCK-1].lock);
128 CEFree = (struct client *)block;
134 /* get the next available CE */
135 static struct client *GetCE()
138 register struct client *entry;
143 ViceLog(0, ("CEFree NULL in GetCE\n"));
144 ShutDownAndCore(PANIC);
148 CEFree = entry->next;
150 memset((char *)entry, 0, CLIENT_TO_ZERO(entry));
156 /* return an entry to the free list */
157 static void FreeCE(entry)
158 register struct client *entry;
161 entry->next = CEFree;
168 * The HTs and HTBlocks variables were formerly static, but they are
169 * now referenced elsewhere in the FileServer.
171 int HTs = 0; /* active file entries */
172 int HTBlocks = 0; /* number of blocks of HTs */
173 static struct host *HTFree = 0; /* first free file entry */
176 * Hash tables of host pointers. We need two tables, one
177 * to map IP addresses onto host pointers, and another
178 * to map host UUIDs onto host pointers.
180 static struct h_hashChain *hostHashTable[h_HASHENTRIES];
181 static struct h_hashChain *hostUuidHashTable[h_HASHENTRIES];
182 #define h_HashIndex(hostip) ((hostip) & (h_HASHENTRIES-1))
183 #define h_UuidHashIndex(uuidp) (((int)(afs_uuid_hash(uuidp))) & (h_HASHENTRIES-1))
185 struct HTBlock /* block of HTSPERBLOCK file entries */
187 struct host entry[h_HTSPERBLOCK];
191 /* get a new block of HTs and chain it on HTFree */
192 static void GetHTBlock()
195 register struct HTBlock *block;
197 static int index = 0;
199 block = (struct HTBlock *)malloc(sizeof(struct HTBlock));
201 ViceLog(0, ("Failed malloc in GetHTBlock\n"));
202 ShutDownAndCore(PANIC);
205 #ifdef AFS_PTHREAD_ENV
206 for(i=0; i < (h_HTSPERBLOCK); i++)
207 assert(pthread_cond_init(&block->entry[i].cond, NULL) == 0);
208 #endif /* AFS_PTHREAD_ENV */
209 for(i=0; i < (h_HTSPERBLOCK); i++)
210 Lock_Init(&block->entry[i].lock);
211 for(i=0; i < (h_HTSPERBLOCK -1); i++)
212 block->entry[i].next = &(block->entry[i+1]);
213 for (i=0; i< (h_HTSPERBLOCK); i++)
214 block->entry[i].index = index++;
215 block->entry[h_HTSPERBLOCK-1].next = 0;
216 HTFree = (struct host *)block;
217 hosttableptrs[HTBlocks++] = block->entry;
222 /* get the next available HT */
223 static struct host *GetHT()
226 register struct host *entry;
232 HTFree = entry->next;
234 memset((char *)entry, 0, HOST_TO_ZERO(entry));
240 /* return an entry to the free list */
241 static void FreeHT(entry)
242 register struct host *entry;
245 entry->next = HTFree;
252 static short consolePort = 0;
255 register struct host *host;
264 * If this thread does not have a hold on this host AND
265 * if other threads also dont have any holds on this host AND
266 * If either the HOSTDELETED or CLIENTDELETED flags are set
269 int h_Release_r(host)
270 register struct host *host;
273 if (!((host)->holds[h_holdSlot()] &= ~h_holdbit()) ) {
274 if (! h_OtherHolds_r(host) ) {
275 if ( (host->hostFlags & HOSTDELETED) ||
276 (host->hostFlags & CLIENTDELETED) ) {
285 register struct host *host;
289 retVal = h_Held_r(host);
294 int h_OtherHolds_r(host)
295 register struct host *host;
297 register int i, bit, slot;
300 for (i = 0 ; i < h_maxSlots ; i++) {
301 if (host->holds[i] != ((i == slot) ? bit : 0)) {
308 int h_OtherHolds(host)
309 register struct host *host;
313 retVal = h_OtherHolds_r(host);
319 register struct host *host;
329 * returns 1 if already locked
330 * else returns locks and returns 0
334 register struct host *host;
336 struct Lock *hostLock = &host->lock;
341 if ( !(hostLock->excl_locked) && !(hostLock->readers_reading) )
342 hostLock->excl_locked = WRITE_LOCK;
346 LOCK_UNLOCK(hostLock)
355 #if FS_STATS_DETAILED
356 /*------------------------------------------------------------------------
357 * PRIVATE h_AddrInSameNetwork
360 * Given a target IP address and a candidate IP address (both
361 * in host byte order), return a non-zero value (1) if the
362 * candidate address is in a different network from the target
366 * a_targetAddr : Target address.
367 * a_candAddr : Candidate address.
370 * 1 if the candidate address is in the same net as the target,
374 * The target and candidate addresses are both in host byte
375 * order, NOT network byte order, when passed in. We return
376 * our value as a character, since that's the type of field in
377 * the host structure, where this info will be stored.
381 *------------------------------------------------------------------------*/
383 static char h_AddrInSameNetwork(a_targetAddr, a_candAddr)
384 afs_uint32 a_targetAddr;
385 afs_uint32 a_candAddr;
387 { /*h_AddrInSameNetwork*/
389 afs_uint32 targetNet;
393 * Pull out the network and subnetwork numbers from the target
394 * and candidate addresses. We can short-circuit this whole
395 * affair if the target and candidate addresses are not of the
398 if (IN_CLASSA(a_targetAddr)) {
399 if (!(IN_CLASSA(a_candAddr))) {
402 targetNet = a_targetAddr & IN_CLASSA_NET;
403 candNet = a_candAddr & IN_CLASSA_NET;
406 if (IN_CLASSB(a_targetAddr)) {
407 if (!(IN_CLASSB(a_candAddr))) {
410 targetNet = a_targetAddr & IN_CLASSB_NET;
411 candNet = a_candAddr & IN_CLASSB_NET;
414 if (IN_CLASSC(a_targetAddr)) {
415 if (!(IN_CLASSC(a_candAddr))) {
418 targetNet = a_targetAddr & IN_CLASSC_NET;
419 candNet = a_candAddr & IN_CLASSC_NET;
422 targetNet = a_targetAddr;
423 candNet = a_candAddr;
424 } /*Class D address*/
427 * Now, simply compare the extracted net values for the two addresses
428 * (which at this point are known to be of the same class)
430 if (targetNet == candNet)
435 } /*h_AddrInSameNetwork*/
436 #endif /* FS_STATS_DETAILED */
440 h_gethostcps_r(host,now)
441 register struct host *host;
442 register afs_int32 now;
447 /* at this point, the host might not be locked, nor held */
448 /* make sure that we do not disappear behind the RPC */
449 if ( !(held = h_Held_r(host)) )
452 /* wait if somebody else is already doing the getCPS call */
453 while ( host->hostFlags & HPCS_INPROGRESS )
455 slept = 1; /* I did sleep */
456 host->hostFlags |= HPCS_WAITING; /* I am sleeping now */
457 #ifdef AFS_PTHREAD_ENV
458 pthread_cond_wait(&host->cond, &host_glock_mutex);
459 #else /* AFS_PTHREAD_ENV */
460 if (( code = LWP_WaitProcess( &(host->hostFlags ))) != LWP_SUCCESS)
461 ViceLog(0, ("LWP_WaitProcess returned %d\n", code));
462 #endif /* AFS_PTHREAD_ENV */
466 host->hostFlags |= HPCS_INPROGRESS; /* mark as CPSCall in progress */
467 if (host->hcps.prlist_val)
468 free(host->hcps.prlist_val); /* this is for hostaclRefresh */
469 host->hcps.prlist_val = (afs_int32 *)0;
470 host->hcps.prlist_len = 0;
471 slept? (host->cpsCall = FT_ApproxTime()): (host->cpsCall = now );
474 code = pr_GetHostCPS(htonl(host->host), &host->hcps);
478 * Although ubik_Call (called by pr_GetHostCPS) traverses thru all protection servers
479 * and reevaluates things if no sync server or quorum is found we could still end up
480 * with one of these errors. In such case we would like to reevaluate the rpc call to
481 * find if there's cps for this guy. We treat other errors (except network failures
482 * ones - i.e. code < 0) as an indication that there is no CPS for this host. Ideally
483 * we could like to deal this problem the other way around (i.e. if code == NOCPS
484 * ignore else retry next time) but the problem is that there're other errors (i.e.
485 * EPERM) for which we don't want to retry and we don't know the whole code list!
487 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC) {
489 * We would have preferred to use a while loop and try again since ops in protected
490 * acls for this host will fail now but they'll be reevaluated on any subsequent
491 * call. The attempt to wait for a quorum/sync site or network error won't work
492 * since this problems really should only occurs during a complete fileserver
493 * restart. Since the fileserver will start before the ptservers (and thus before
494 * quorums are complete) clients will be utilizing all the fileserver's lwps!!
496 host->hcpsfailed = 1;
497 ViceLog(0, ("Warning: GetHostCPS failed (%d) for %x; will retry\n", code, host->host));
499 host->hcpsfailed = 0;
500 ViceLog(1, ("gethost: GetHostCPS failed (%d) for %x; ignored\n", code, host->host));
502 if (host->hcps.prlist_val)
503 free(host->hcps.prlist_val);
504 host->hcps.prlist_val = (afs_int32 *)0;
505 host->hcps.prlist_len = 0; /* Make sure it's zero */
507 host->hcpsfailed = 0;
509 host->hostFlags &= ~HPCS_INPROGRESS;
510 /* signal all who are waiting */
511 if ( host->hostFlags & HPCS_WAITING) /* somebody is waiting */
513 host->hostFlags &= ~HPCS_WAITING;
514 #ifdef AFS_PTHREAD_ENV
515 assert(pthread_cond_broadcast(&host->cond) == 0);
516 #else /* AFS_PTHREAD_ENV */
517 if ( (code = LWP_NoYieldSignal( &(host->hostFlags) )) != LWP_SUCCESS )
518 ViceLog(0, ("LWP_NoYieldSignal returns %d\n", code));
519 #endif /* AFS_PTHREAD_ENV */
522 /* if we had held the host, release it now */
527 void h_flushhostcps(hostaddr, hport)
528 register afs_uint32 hostaddr, hport; /* net byte order */
530 register struct host *host;
533 host = h_Lookup_r(hostaddr, hport);
535 host->hcpsfailed = 1;
544 * Allocate a host. It will be identified by the peer (ip,port) info in the
545 * rx connection provided. The host is returned un-held and un-locked
547 #define DEF_ROPCONS 2115
549 struct host *h_Alloc(r_con)
550 register struct rx_connection *r_con;
554 retVal = h_Alloc_r(r_con);
559 struct host *h_Alloc_r(r_con)
560 register struct rx_connection *r_con;
564 struct servent *serverentry;
565 register index = h_HashIndex(rxr_HostOf(r_con));
566 register struct host *host;
567 static struct rx_securityClass *sc = 0;
569 struct h_hashChain* h_hashChain;
570 #if FS_STATS_DETAILED
571 afs_uint32 newHostAddr_HBO; /*New host IP addr, in host byte order*/
572 #endif /* FS_STATS_DETAILED */
576 h_hashChain = (struct h_hashChain*) malloc(sizeof(struct h_hashChain));
578 h_hashChain->hostPtr = host;
579 h_hashChain->addr = rxr_HostOf(r_con);
580 h_hashChain->next = hostHashTable[index];
581 hostHashTable[index] = h_hashChain;
583 host->host = rxr_HostOf(r_con);
584 host->port = rxr_PortOf(r_con);
585 if(consolePort == 0 ) { /* find the portal number for console */
586 #if defined(AFS_OSF_ENV)
587 serverentry = getservbyname("ropcons", "");
589 serverentry = getservbyname("ropcons", 0);
592 consolePort = serverentry->s_port;
594 consolePort = DEF_ROPCONS; /* Use a default */
596 if (host->port == consolePort) host->Console = 1;
597 /* Make a callback channel even for the console, on the off chance that it
598 makes a request that causes a break call back. It shouldn't. */
601 sc = (struct rx_securityClass *) rxnull_NewClientSecurityObject();
602 host->callback_rxcon = rx_NewConnection (host->host, host->port,
604 rx_SetConnDeadTime(host->callback_rxcon, 50);
605 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
607 now = host->LastCall = host->cpsCall = host->ActiveCall = FT_ApproxTime();
609 host->hcps.prlist_val = (afs_int32 *)0;
610 host->hcps.prlist_len = 0;
611 host->hcps.prlist_val = (afs_int32 *)0;
613 /*host->hcpsfailed = 0; /* save cycles */
614 /* h_gethostcps(host); do this under host lock */
615 host->FirstClient = 0;
616 h_InsertList_r(host); /* update global host List */
617 #if FS_STATS_DETAILED
619 * Compare the new host's IP address (in host byte order) with ours
620 * (the File Server's), remembering if they are in the same network.
622 newHostAddr_HBO = (afs_uint32)ntohl(host->host);
623 host->InSameNetwork = h_AddrInSameNetwork(FS_HostAddr_HBO,
625 #endif /* FS_STATS_DETAILED */
631 /* Lookup a host given an IP address and UDP port number. */
632 struct host *h_Lookup(hostaddr, hport)
633 afs_uint32 hostaddr, hport; /* network byte order */
637 retVal = h_Lookup_r(hostaddr, hport);
642 struct host *h_Lookup_r(hostaddr, hport)
643 afs_uint32 hostaddr, hport; /* network byte order */
645 register afs_int32 now;
646 register struct host *host=0;
647 register struct h_hashChain* chain;
648 register index = h_HashIndex(hostaddr);
649 extern int hostaclRefresh;
651 for (chain=hostHashTable[index]; chain; chain=chain->next) {
652 host = chain->hostPtr;
654 if (!(host->hostFlags & HOSTDELETED) && chain->addr == hostaddr
655 && host->port == hport) {
656 now = FT_ApproxTime(); /* always evaluate "now" */
657 if (host->hcpsfailed || (host->cpsCall+hostaclRefresh < now )) {
659 * Every hostaclRefresh period (def 2 hrs) get the new membership list for the host.
660 * Note this could be the first time that the host is added to a group.
661 * Also here we also retry on previous legitimate hcps failures
663 h_gethostcps_r(host,now);
673 /* Lookup a host given its UUID. */
674 struct host *h_LookupUuid_r(uuidp)
677 register struct host *host=0;
678 register struct h_hashChain* chain;
679 register index = h_UuidHashIndex(uuidp);
681 for (chain=hostUuidHashTable[index]; chain; chain=chain->next) {
682 host = chain->hostPtr;
684 if (!(host->hostFlags & HOSTDELETED) && host->interface
685 && afs_uuid_equal(&host->interface->uuid, uuidp)) {
696 * h_Hold: Establish a hold by the current LWP on this host--the host
697 * or its clients will not be physically deleted until all holds have
700 * NOTE: h_Hold_r is a macro defined in host.h.
704 register struct host *host;
713 /* h_TossStuff: Toss anything in the host structure (the host or
714 * clients marked for deletion. Called from r_Release ONLY.
715 * To be called, there must be no holds, and either host->deleted
716 * or host->clientDeleted must be set.
719 register struct host *host;
722 register struct client **cp, *client;
725 /* if somebody still has this host held */
726 for (i=0; (i<h_maxSlots)&&(!(host)->holds[i]); i++);
730 /* ASSUMPTION: r_FreeConnection() does not yield */
731 for (cp = &host->FirstClient; client = *cp; ) {
732 if ((host->hostFlags & HOSTDELETED) || client->deleted) {
733 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val) {
734 free(client->CPS.prlist_val);
735 client->CPS.prlist_val = (afs_int32 *)0;
738 rx_SetSpecific(client->tcon, rxcon_client_key, (void *)0);
740 CurrentConnections--;
743 } else cp = &client->next;
745 if (host->hostFlags & HOSTDELETED) {
746 register struct h_hashChain **hp, *th;
747 register struct rx_connection *rxconn;
752 if (host->Console & 1) Console--;
753 if (rxconn = host->callback_rxcon) {
754 host->callback_rxcon = (struct rx_connection *)0;
756 * If rx_DestroyConnection calls h_FreeConnection we will
757 * deadlock on the host_glock_mutex. Work around the problem
758 * by unhooking the client from the connection before
759 * destroying the connection.
761 client = rx_GetSpecific(rxconn, rxcon_client_key);
762 if (client && client->tcon == rxconn)
764 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
765 rx_DestroyConnection(rxconn);
767 if (host->hcps.prlist_val)
768 free(host->hcps.prlist_val);
769 host->hcps.prlist_val = (afs_int32 *)0;
770 host->hcps.prlist_len = 0;
771 DeleteAllCallBacks_r(host);
772 host->hostFlags &= ~RESETDONE; /* just to be safe */
774 /* if alternate addresses do not exist */
775 if ( !(host->interface) )
777 for (hp = &hostHashTable[h_HashIndex(host->host)];
778 th = *hp; hp = &th->next)
781 if (th->hostPtr == host)
784 h_DeleteList_r(host);
792 /* delete all hash entries for the UUID */
793 uuidp = &host->interface->uuid;
794 for (hp = &hostUuidHashTable[h_UuidHashIndex(uuidp)];
795 th = *hp; hp = &th->next) {
797 if (th->hostPtr == host)
804 /* delete all hash entries for alternate addresses */
805 assert(host->interface->numberOfInterfaces > 0 );
806 for ( i=0; i < host->interface->numberOfInterfaces; i++)
808 hostAddr = host->interface->addr[i];
809 for (hp = &hostHashTable[h_HashIndex(hostAddr)];
810 th = *hp; hp = &th->next)
813 if (th->hostPtr == host)
821 free(host->interface);
822 host->interface = NULL;
823 h_DeleteList_r(host); /* remove host from global host List */
825 } /* if alternate address exists */
830 /* Called by rx when a server connection disappears */
831 h_FreeConnection(tcon)
832 struct rx_connection *tcon;
835 register struct client *client;
837 client = (struct client *) rx_GetSpecific(tcon, rxcon_client_key);
840 if (client->tcon == tcon)
841 client->tcon = (struct rx_connection *)0;
844 } /*h_FreeConnection*/
847 /* h_Enumerate: Calls (*proc)(host, held, param) for at least each host in the
848 * system at the start of the enumeration (perhaps more). Hosts may be deleted
849 * (have delete flag set); ditto for clients. (*proc) is always called with
850 * host h_held(). The hold state of the host with respect to this lwp is passed
851 * to (*proc) as the param held. The proc should return 0 if the host should be
852 * released, 1 if it should be held after enumeration.
854 h_Enumerate(proc, param)
859 register struct host *host, **list;
861 register int i, count;
864 if (hostCount == 0) {
868 list = (struct host **)malloc(hostCount * sizeof(struct host *));
869 assert(list != NULL);
870 held = (int *)malloc(hostCount * sizeof(int));
871 assert(held != NULL);
872 for (count = 0, host = hostList ; host ; host = host->next, count++) {
874 if (!(held[count] = h_Held_r(host)))
877 assert(count == hostCount);
879 for ( i = 0 ; i < count ; i++) {
880 held[i] = (*proc)(list[i], held[i], param);
882 h_Release(list[i]);/* this might free up the host */
888 /* h_Enumerate_r: Calls (*proc)(host, held, param) for at least each host in
889 * the at the start of the enumeration (perhaps more). Hosts may be deleted
890 * (have delete flag set); ditto for clients. (*proc) is always called with
891 * host h_held() and the global host lock (H_LOCK) locked.The hold state of the
892 * host with respect to this lwp is passed to (*proc) as the param held.
893 * The proc should return 0 if the host should be released, 1 if it should
894 * be held after enumeration.
896 h_Enumerate_r(proc, param)
901 register struct host *host;
904 if (hostCount == 0) {
907 for (host = hostList ; host ; host = host->next) {
908 if (!(held = h_Held_r(host)))
910 held = (*proc)(host, held, param);
912 h_Release_r(host);/* this might free up the host */
917 /* Host is returned held */
918 struct host *h_GetHost_r(tcon)
919 struct rx_connection *tcon;
923 struct host *oldHost;
926 struct interfaceAddr interf;
928 afs_int32 buffer[AFS_MAX_INTERFACE_ADDR];
929 struct Identity *identP = NULL;
934 haddr = rxr_HostOf(tcon);
935 hport = rxr_PortOf(tcon);
938 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
939 host = h_Lookup_r(haddr, hport);
940 if (host && !identP && !(host->Console&1)) {
941 /* This is a new connection, and we already have a host
942 * structure for this address. Verify that the identity
943 * of the caller matches the identity in the host structure.
945 if (!(held = h_Held_r(host)))
948 if ( !(host->hostFlags & ALTADDR) )
950 /* Another thread is doing initialization */
952 if ( !held) h_Release_r(host);
953 ViceLog(125, ("Host %x starting h_Lookup again\n", host));
956 host->hostFlags &= ~ALTADDR;
958 code = RXAFSCB_WhoAreYou(host->callback_rxcon, &interf);
960 if ( code == RXGEN_OPCODE ) {
961 identP = (struct Identity *)malloc(1);
963 rx_SetSpecific(tcon, rxcon_ident_key, identP);
964 /* The host on this connection was unable to respond to
965 * the WhoAreYou. We will treat this as a new connection
966 * from the existing host. The worst that can happen is
967 * that we maintain some extra callback state information */
968 if (host->interface) {
970 ("Host %x used to support WhoAreYou, deleting.\n",
972 host->hostFlags |= HOSTDELETED;
974 if (!held) h_Release_r(host);
978 } else if (code == 0) {
980 identP = (struct Identity *)malloc(sizeof(struct Identity));
982 identP->uuid = interf.uuid;
983 rx_SetSpecific(tcon, rxcon_ident_key, identP);
984 /* Check whether the UUID on this connection matches
985 * the UUID in the host structure. If they don't match
986 * then this is not the same host as before. */
987 if ( !host->interface
988 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid) ) {
990 ("Host %x has changed its identity, deleting.\n",
992 host->hostFlags |= HOSTDELETED;
994 if (!held) h_Release_r(host);
1000 afs_inet_ntoa_r(host->host, hoststr);
1001 ViceLog(0,("CB: WhoAreYou failed for %s:%d, error %d\n",
1002 hoststr, ntohs(host->port), code));
1003 host->hostFlags |= VENUSDOWN;
1005 host->hostFlags |= ALTADDR;
1008 if (!(held = h_Held_r(host)))
1010 if ( ! (host->hostFlags & ALTADDR) )
1012 /* another thread is doing the initialisation */
1013 ViceLog(125, ("Host %x waiting for host-init to complete\n",
1017 if ( !held) h_Release_r(host);
1018 ViceLog(125, ("Host %x starting h_Lookup again\n", host));
1021 /* We need to check whether the identity in the host structure
1022 * matches the identity on the connection. If they don't match
1023 * then treat this a new host. */
1024 if ( !(host->Console&1)
1025 && ( ( !identP->valid && host->interface )
1026 || ( identP->valid && !host->interface )
1028 && !afs_uuid_equal(&identP->uuid, &host->interface->uuid) ) ) ) {
1029 /* The host in the cache is not the host for this connection */
1030 host->hostFlags |= HOSTDELETED;
1032 if (!held) h_Release_r(host);
1033 ViceLog(0,("CB: new identity for host %x, deleting\n",
1038 host = h_Alloc_r(tcon);
1041 h_gethostcps_r(host,FT_ApproxTime());
1042 if (!(host->Console&1)) {
1043 if (!identP || !interfValid) {
1045 code = RXAFSCB_WhoAreYou(host->callback_rxcon, &interf);
1047 if ( code == RXGEN_OPCODE ) {
1048 identP = (struct Identity *)malloc(1);
1050 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1052 ("Host %x does not support WhoAreYou.\n",
1055 } else if (code == 0) {
1057 identP = (struct Identity *)malloc(sizeof(struct Identity));
1059 identP->uuid = interf.uuid;
1060 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1061 ViceLog(25,("WhoAreYou success on %x\n", host->host));
1064 if (code == 0 && !identP->valid) {
1066 code = RXAFSCB_InitCallBackState(host->callback_rxcon);
1068 } else if (code == 0) {
1069 oldHost = h_LookupUuid_r(&identP->uuid);
1071 /* This is a new address for an existing host. Update
1072 * the list of interfaces for the existing host and
1073 * delete the host structure we just allocated. */
1074 if (!(held = h_Held_r(oldHost)))
1077 ViceLog(25,("CB: new addr %x for old host %x\n",
1078 host->host, oldHost->host));
1079 host->hostFlags |= HOSTDELETED;
1083 addInterfaceAddr_r(host, haddr);
1085 /* This really is a new host */
1086 hashInsertUuid_r(&identP->uuid, host);
1088 code = RXAFSCB_InitCallBackState3(host->callback_rxcon,
1092 ViceLog(25,("InitCallBackState3 success on %x\n",
1094 assert(interfValid == 1);
1095 initInterfaceAddr_r(host, &interf);
1101 afs_inet_ntoa_r(host->host, hoststr);
1102 ViceLog(0,("CB: RCallBackConnectBack failed for %s:%d\n",
1103 hoststr, ntohs(host->port)));
1104 host->hostFlags |= VENUSDOWN;
1107 host->hostFlags |= RESETDONE;
1110 host->hostFlags |= ALTADDR;/* host structure iniatilisation complete */
1118 static char localcellname[PR_MAXNAMELEN+1];
1119 char local_realm[AFS_REALM_SZ] = "";
1122 void h_InitHostPackage()
1124 afsconf_GetLocalCell (confDir, localcellname, PR_MAXNAMELEN);
1125 if (!local_realm[0]) {
1126 if (afs_krb_get_lrealm(local_realm, 0) != 0/*KSUCCESS*/) {
1127 ViceLog(0, ("afs_krb_get_lrealm failed, using %s.\n",localcellname));
1128 strcpy (local_realm, localcellname);
1131 rxcon_ident_key = rx_KeyCreate((rx_destructor_t)free);
1132 rxcon_client_key = rx_KeyCreate((rx_destructor_t)0);
1133 #ifdef AFS_PTHREAD_ENV
1134 assert(pthread_mutex_init(&host_glock_mutex, NULL) == 0);
1135 #endif /* AFS_PTHREAD_ENV */
1138 static MapName_r(aname, acell, aval)
1147 afs_int32 anamelen, cnamelen;
1151 anamelen=strlen(aname);
1152 if (anamelen >= PR_MAXNAMELEN)
1153 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
1155 lnames.namelist_len = 1;
1156 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
1157 lids.idlist_len = 0;
1158 lids.idlist_val = (afs_int32 *) 0;
1160 cnamelen=strlen(acell);
1162 if (strcasecmp(local_realm, acell) && strcasecmp(localcellname, acell)) {
1163 ViceLog(2, ("MapName: cell is foreign. cell=%s, localcell=%s, localrealm=%s\n",
1164 acell, localcellname, local_realm));
1165 if ((anamelen+cnamelen+1) >= PR_MAXNAMELEN) {
1166 ViceLog(2, ("MapName: Name too long, using AnonymousID for %s@%s\n",
1168 *aval = AnonymousID;
1171 foreign = 1; /* attempt cross-cell authentication */
1172 tname = (char *) malloc(anamelen+cnamelen+2);
1173 strcpy(tname, aname);
1174 tname[anamelen] = '@';
1175 strcpy(tname+anamelen+1, acell);
1176 lnames.namelist_val = (prname *) tname;
1181 code = pr_NameToId(&lnames, &lids);
1184 if (lids.idlist_val) {
1185 *aval = lids.idlist_val[0];
1186 if (*aval == AnonymousID) {
1187 ViceLog(2, ("MapName: NameToId on %s returns anonymousID\n", lnames.namelist_val));
1189 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
1191 ViceLog(0, ("MapName: NameToId on '%s' is unknown\n", lnames.namelist_val));
1197 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
1204 /* NOTE: this returns the client with a Shared lock */
1205 struct client *h_ID2Client(vid)
1208 register struct client *client;
1209 register struct host *host;
1213 for (host=hostList; host; host=host->next) {
1214 if (host->hostFlags & HOSTDELETED)
1216 for (client = host->FirstClient; client; client = client->next) {
1217 if (!client->deleted && client->ViceId == vid) {
1220 ObtainSharedLock(&client->lock);
1234 * Called by the server main loop. Returns a h_Held client, which must be
1235 * released later the main loop. Allocates a client if the matching one
1236 * isn't around. The client is returned with its reference count incremented
1237 * by one. The caller must call h_ReleaseClient_r when finished with
1240 struct client *h_FindClient_r(tcon)
1241 struct rx_connection *tcon;
1244 register struct client *client;
1245 register struct host *host;
1246 struct client *oldClient;
1251 #if (64-MAXKTCNAMELEN)
1252 ticket name length != 64
1256 char uname[PR_MAXNAMELEN];
1257 char tcell[MAXKTCREALMLEN];
1260 client = (struct client *) rx_GetSpecific(tcon, rxcon_client_key);
1261 if (client && !client->deleted) {
1263 h_Hold_r(client->host);
1264 if (client->prfail != 2) { /* Could add shared lock on client here */
1265 /* note that we don't have to lock entry in this path to
1266 * ensure CPS is initialized, since we don't call rxr_SetSpecific
1267 * until initialization is done, and we only get here if
1268 * rx_GetSpecific located the client structure.
1273 ObtainWriteLock(&client->lock); /* released at end */
1275 } else if (client) {
1279 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
1280 ViceLog(5,("FindClient: authenticating connection: authClass=%d\n",
1282 if (authClass == 1) {
1283 /* A bcrypt tickets, no longer supported */
1284 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
1285 viceid = AnonymousID;
1286 expTime = 0x7fffffff;
1287 } else if (authClass == 2) {
1290 /* kerberos ticket */
1291 code = rxkad_GetServerInfo (tcon, /*level*/0, &expTime,
1292 tname, tinst, tcell, &kvno);
1294 ViceLog(1, ("Failed to get rxkad ticket info\n"));
1295 viceid = AnonymousID;
1296 expTime = 0x7fffffff;
1298 int ilen = strlen(tinst);
1300 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
1301 tname, tinst, tcell, expTime, kvno));
1302 strncpy (uname, tname, sizeof(uname));
1304 if (strlen(uname) + 1 + ilen >= sizeof(uname))
1306 strcat (uname, ".");
1307 strcat (uname, tinst);
1309 /* translate the name to a vice id */
1310 code = MapName_r(uname, tcell, &viceid);
1313 ViceLog(1, ("failed to map name=%s, cell=%s -> code=%d\n",
1314 uname, tcell, code));
1316 viceid = AnonymousID;
1317 expTime = 0x7fffffff;
1321 viceid = AnonymousID; /* unknown security class */
1322 expTime = 0x7fffffff;
1326 host = h_GetHost_r(tcon); /* Returns it h_Held */
1328 /* First try to find the client structure */
1329 for (client = host->FirstClient; client; client = client->next) {
1330 if (!client->deleted && (client->sid == rxr_CidOf(tcon)) &&
1331 (client->VenusEpoch == rxr_GetEpoch(tcon))) {
1332 if (client->tcon && (client->tcon != tcon)) {
1333 ViceLog(0, ("*** Vid=%d, sid=%x, tcon=%x, Tcon=%x ***\n",
1334 client->ViceId, client->sid, client->tcon, tcon));
1335 client->tcon = (struct rx_connection *)0;
1339 ObtainWriteLock(&client->lock);
1345 /* Still no client structure - get one */
1348 ObtainWriteLock(&client->lock);
1349 client->host = host;
1350 client->next = host->FirstClient;
1351 host->FirstClient = client;
1352 #if FS_STATS_DETAILED
1353 client->InSameNetwork = host->InSameNetwork;
1354 #endif /* FS_STATS_DETAILED */
1355 client->ViceId = viceid;
1356 client->expTime = expTime; /* rx only */
1357 client->authClass = authClass; /* rx only */
1358 client->sid = rxr_CidOf(tcon);
1359 client->VenusEpoch = rxr_GetEpoch(tcon);
1360 client->CPS.prlist_val = 0;
1361 client->refCount = 1;
1362 CurrentConnections++; /* increment number of connections */
1365 client->prfail = fail;
1367 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
1368 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID)) {
1369 free(client->CPS.prlist_val);
1371 client->CPS.prlist_val = (afs_int32 *)0;
1372 client->ViceId = viceid;
1373 client->expTime = expTime;
1375 if (viceid == ANONYMOUSID) {
1376 client->CPS.prlist_len = AnonCPS.prlist_len;
1377 client->CPS.prlist_val = AnonCPS.prlist_val;
1380 code = pr_GetCPS(viceid, &client->CPS);
1383 ViceLog(0, ("pr_GetCPS failed(%d) for user %d, host %x.%d\n",
1384 code, viceid, client->host->host, ntohs(client->host->port)));
1386 /* Although ubik_Call (called by pr_GetCPS) traverses thru
1387 * all protection servers and reevaluates things if no
1388 * sync server or quorum is found we could still end up
1389 * with one of these errors. In such case we would like to
1390 * reevaluate the rpc call to find if there's cps for this
1391 * guy. We treat other errors (except network failures
1392 * ones - i.e. code < 0) as an indication that there is no
1393 * CPS for this host. Ideally we could like to deal this
1394 * problem the other way around (i.e. if code == NOCPS
1395 * ignore else retry next time) but the problem is that
1396 * there're other errors (i.e. EPERM) for which we don't
1397 * want to retry and we don't know the whole code list!
1399 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
1403 /* the disabling of system:administrators is so iffy and has so many
1404 * possible failure modes that we will disable it again */
1405 /* Turn off System:Administrator for safety
1406 if (AL_IsAMember(SystemId, client->CPS) == 0)
1407 assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
1410 /* Now, tcon may already be set to a rock, since we blocked with no host
1411 * or client locks set above in pr_GetCPS (XXXX some locking is probably
1412 * required). So, before setting the RPC's rock, we should disconnect
1413 * the RPC from the other client structure's rock.
1415 if (oldClient = (struct client *) rx_GetSpecific(tcon, rxcon_client_key)) {
1416 oldClient->tcon = (struct rx_connection *) 0;
1417 /* rx_SetSpecific will be done immediately below */
1419 client->tcon = tcon;
1420 rx_SetSpecific(tcon, rxcon_client_key, client);
1421 ReleaseWriteLock(&client->lock);
1425 } /*h_FindClient_r*/
1427 int h_ReleaseClient_r(client)
1428 struct client *client;
1430 assert(client->refCount > 0);
1437 * Sigh: this one is used to get the client AGAIN within the individual
1438 * server routines. This does not bother h_Holding the host, since
1439 * this is assumed already have been done by the server main loop.
1440 * It does check tokens, since only the server routines can return the
1441 * VICETOKENDEAD error code
1443 int GetClient(tcon, cp)
1444 struct rx_connection * tcon;
1448 register struct client *client;
1452 *cp = client = (struct client *) rx_GetSpecific(tcon, rxcon_client_key);
1454 assert(client && client->tcon && rxr_CidOf(client->tcon) == client->sid);
1456 client->LastCall > client->expTime && client->expTime) {
1457 ViceLog(1, ("Token for %s at %x.%d expired %d\n",
1458 h_UserName(client), client->host->host, client->host->port, client->expTime));
1460 return VICETOKENDEAD;
1469 /* Client user name for short term use. Note that this is NOT inexpensive */
1470 char *h_UserName(client)
1471 struct client *client;
1474 static char User[PR_MAXNAMELEN+1];
1478 lids.idlist_len = 1;
1479 lids.idlist_val = (afs_int32 *)malloc(1*sizeof(afs_int32));
1480 lnames.namelist_len = 0;
1481 lnames.namelist_val = (prname *)0;
1482 lids.idlist_val[0] = client->ViceId;
1483 if (pr_IdToName(&lids,&lnames)) {
1484 /* We need to free id we alloced above! */
1485 free(lids.idlist_val);
1486 return "*UNKNOWN USER NAME*";
1488 strncpy(User,lnames.namelist_val[0],PR_MAXNAMELEN);
1489 free(lids.idlist_val);
1490 free(lnames.namelist_val);
1500 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
1501 CEs, CEBlocks, HTs, HTBlocks));
1506 static int h_PrintClient(host, held, file)
1507 register struct host *host;
1509 StreamHandle_t *file;
1511 register struct client *client;
1517 if (host->hostFlags & HOSTDELETED) {
1521 sprintf(tmpStr,"Host %x.%d down = %d, LastCall %s", host->host,
1522 host->port, (host->hostFlags & VENUSDOWN),
1523 afs_ctime((time_t *)&host->LastCall, tbuffer, sizeof(tbuffer)));
1524 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1525 for (client = host->FirstClient; client; client=client->next) {
1526 if (!client->deleted) {
1528 sprintf(tmpStr, " user id=%d, name=%s, sl=%s till %s",
1529 client->ViceId, h_UserName(client),
1530 client->authClass ? "Authenticated" : "Not authenticated",
1532 afs_ctime((time_t *)&client->expTime, tbuffer, sizeof(tbuffer))
1534 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1537 sprintf(tmpStr, " user=%s, no current server connection\n",
1538 h_UserName(client));
1539 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1541 sprintf(tmpStr, " CPS-%d is [", client->CPS.prlist_len);
1542 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1543 if (client->CPS.prlist_val) {
1544 for (i=0; i > client->CPS.prlist_len; i++) {
1545 sprintf(tmpStr, " %d", client->CPS.prlist_val[i]);
1546 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1549 sprintf(tmpStr, "]\n");
1550 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1561 * Print a list of clients, with last security level and token value seen,
1571 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
1574 ViceLog(0, ("Couldn't create client dump file %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
1577 now = FT_ApproxTime();
1578 sprintf(tmpStr, "List of active users at %s\n",
1579 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
1580 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1581 h_Enumerate(h_PrintClient, (char *)file);
1582 STREAM_REALLYCLOSE(file);
1583 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
1589 static int h_DumpHost(host, held, file)
1590 register struct host *host;
1592 StreamHandle_t *file;
1599 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 [",
1600 host->host, host->port, host->index, host->cblist,
1601 CheckLock(&host->lock), host->LastCall, host->ActiveCall,
1602 (host->hostFlags & VENUSDOWN), host->hostFlags&HOSTDELETED,
1603 host->Console, host->hostFlags & CLIENTDELETED,
1604 host->hcpsfailed, host->cpsCall);
1605 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1606 if (host->hcps.prlist_val)
1607 for (i=0; i < host->hcps.prlist_len; i++) {
1608 sprintf(tmpStr, " %d", host->hcps.prlist_val[i]);
1609 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1611 sprintf(tmpStr, "] [");
1612 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1613 if ( host->interface)
1614 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1615 sprintf(tmpStr, " %x", host->interface->addr[i]);
1616 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1618 sprintf(tmpStr, "] holds: ");
1619 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1621 for (i = 0 ; i < h_maxSlots ; i++) {
1622 sprintf(tmpStr, "%04x", host->holds[i]);
1623 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1625 sprintf(tmpStr, " slot/bit: %d/%d\n", h_holdSlot(), h_holdbit());
1626 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1638 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
1643 ViceLog(0, ("Couldn't create host dump file %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
1646 now = FT_ApproxTime();
1647 sprintf(tmpStr, "List of active hosts at %s\n",
1648 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
1649 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1650 h_Enumerate(h_DumpHost, (char *) file);
1651 STREAM_REALLYCLOSE(file);
1652 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
1658 * This counts the number of workstations, the number of active workstations,
1659 * and the number of workstations declared "down" (i.e. not heard from
1660 * recently). An active workstation has received a call since the cutoff
1661 * time argument passed.
1663 h_GetWorkStats(nump, activep, delp, cutofftime)
1667 afs_int32 cutofftime;
1671 register struct host *host;
1672 register int num=0, active=0, del=0;
1675 for (host = hostList; host; host = host->next) {
1676 if (!(host->hostFlags & HOSTDELETED)) {
1678 if (host->ActiveCall > cutofftime)
1680 if (host->hostFlags & VENUSDOWN)
1692 } /*h_GetWorkStats*/
1695 /*------------------------------------------------------------------------
1696 * PRIVATE h_ClassifyAddress
1699 * Given a target IP address and a candidate IP address (both
1700 * in host byte order), classify the candidate into one of three
1701 * buckets in relation to the target by bumping the counters passed
1705 * a_targetAddr : Target address.
1706 * a_candAddr : Candidate address.
1707 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
1708 * addresses are either in the same network
1709 * or the same subnet.
1710 * a_diffSubnetP : ...when the candidate is in a different
1712 * a_diffNetworkP : ...when the candidate is in a different
1719 * The target and candidate addresses are both in host byte
1720 * order, NOT network byte order, when passed in.
1724 *------------------------------------------------------------------------*/
1726 static void h_ClassifyAddress(a_targetAddr, a_candAddr, a_sameNetOrSubnetP,
1727 a_diffSubnetP, a_diffNetworkP)
1728 afs_uint32 a_targetAddr;
1729 afs_uint32 a_candAddr;
1730 afs_int32 *a_sameNetOrSubnetP;
1731 afs_int32 *a_diffSubnetP;
1732 afs_int32 *a_diffNetworkP;
1734 { /*h_ClassifyAddress*/
1736 register int i; /*Iterator thru host hash table*/
1737 register struct host *hostP; /*Ptr to current host entry*/
1738 register afs_uint32 currHostAddr; /*Current host address*/
1739 afs_uint32 targetNet;
1740 afs_uint32 targetSubnet;
1742 afs_uint32 candSubnet;
1745 * Put bad values into the subnet info to start with.
1747 targetSubnet = (afs_uint32) 0;
1748 candSubnet = (afs_uint32) 0;
1751 * Pull out the network and subnetwork numbers from the target
1752 * and candidate addresses. We can short-circuit this whole
1753 * affair if the target and candidate addresses are not of the
1756 if (IN_CLASSA(a_targetAddr)) {
1757 if (!(IN_CLASSA(a_candAddr))) {
1758 (*a_diffNetworkP)++;
1761 targetNet = a_targetAddr & IN_CLASSA_NET;
1762 candNet = a_candAddr & IN_CLASSA_NET;
1763 if (IN_SUBNETA(a_targetAddr))
1764 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
1765 if (IN_SUBNETA(a_candAddr))
1766 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
1769 if (IN_CLASSB(a_targetAddr)) {
1770 if (!(IN_CLASSB(a_candAddr))) {
1771 (*a_diffNetworkP)++;
1774 targetNet = a_targetAddr & IN_CLASSB_NET;
1775 candNet = a_candAddr & IN_CLASSB_NET;
1776 if (IN_SUBNETB(a_targetAddr))
1777 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
1778 if (IN_SUBNETB(a_candAddr))
1779 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
1780 } /*Class B target*/
1782 if (IN_CLASSC(a_targetAddr)) {
1783 if (!(IN_CLASSC(a_candAddr))) {
1784 (*a_diffNetworkP)++;
1787 targetNet = a_targetAddr & IN_CLASSC_NET;
1788 candNet = a_candAddr & IN_CLASSC_NET;
1791 * Note that class C addresses can't have subnets,
1792 * so we leave the defaults untouched.
1794 } /*Class C target*/
1796 targetNet = a_targetAddr;
1797 candNet = a_candAddr;
1798 } /*Class D address*/
1801 * Now, simply compare the extracted net and subnet values for
1802 * the two addresses (which at this point are known to be of the
1805 if (targetNet == candNet) {
1806 if (targetSubnet == candSubnet)
1807 (*a_sameNetOrSubnetP)++;
1812 (*a_diffNetworkP)++;
1814 } /*h_ClassifyAddress*/
1817 /*------------------------------------------------------------------------
1818 * EXPORTED h_GetHostNetStats
1821 * Iterate through the host table, and classify each (non-deleted)
1822 * host entry into ``proximity'' categories (same net or subnet,
1823 * different subnet, different network).
1826 * a_numHostsP : Set to total number of (non-deleted) hosts.
1827 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
1828 * a_diffSubnetP : Set to # hosts on diff subnet as server.
1829 * a_diffNetworkP : Set to # hosts on diff network as server.
1835 * We only count non-deleted hosts. The storage pointed to by our
1836 * parameters is zeroed upon entry.
1840 *------------------------------------------------------------------------*/
1842 void h_GetHostNetStats(a_numHostsP, a_sameNetOrSubnetP, a_diffSubnetP,
1844 afs_int32 *a_numHostsP;
1845 afs_int32 *a_sameNetOrSubnetP;
1846 afs_int32 *a_diffSubnetP;
1847 afs_int32 *a_diffNetworkP;
1849 { /*h_GetHostNetStats*/
1851 register struct host *hostP; /*Ptr to current host entry*/
1852 register afs_uint32 currAddr_HBO; /*Curr host addr, host byte order*/
1855 * Clear out the storage pointed to by our parameters.
1857 *a_numHostsP = (afs_int32) 0;
1858 *a_sameNetOrSubnetP = (afs_int32) 0;
1859 *a_diffSubnetP = (afs_int32) 0;
1860 *a_diffNetworkP = (afs_int32) 0;
1863 for (hostP = hostList; hostP; hostP = hostP->next) {
1864 if (!(hostP->hostFlags & HOSTDELETED)) {
1866 * Bump the number of undeleted host entries found.
1867 * In classifying the current entry's address, make
1868 * sure to first convert to host byte order.
1871 currAddr_HBO = (afs_uint32)ntohl(hostP->host);
1872 h_ClassifyAddress(FS_HostAddr_HBO,
1877 } /*Only look at non-deleted hosts*/
1878 } /*For each host record hashed to this index*/
1881 } /*h_GetHostNetStats*/
1883 static afs_uint32 checktime;
1884 static afs_uint32 clientdeletetime;
1885 static struct AFSFid zerofid;
1889 * XXXX: This routine could use Multi-R to avoid serializing the timeouts.
1890 * Since it can serialize them, and pile up, it should be a separate LWP
1891 * from other events.
1893 int CheckHost(host, held)
1894 register struct host *host;
1898 register struct client *client;
1899 struct interfaceAddr interf;
1902 /* Host is held by h_Enumerate */
1904 for (client = host->FirstClient; client; client = client->next) {
1905 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
1906 client->deleted = 1;
1907 host->hostFlags |= CLIENTDELETED;
1910 if (host->LastCall < checktime) {
1912 if (!(host->hostFlags & HOSTDELETED)) {
1913 if (host->LastCall < clientdeletetime) {
1914 host->hostFlags |= HOSTDELETED;
1915 if (!(host->hostFlags & VENUSDOWN)) {
1916 host->hostFlags &= ~ALTADDR; /* alternate address invalid*/
1917 if (host->interface) {
1919 code = RXAFSCB_InitCallBackState3(host->callback_rxcon,
1924 code = RXAFSCB_InitCallBackState(host->callback_rxcon);
1927 host->hostFlags |= ALTADDR; /* alternate addresses valid */
1931 afs_inet_ntoa_r(host->host, hoststr);
1933 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
1934 hoststr, ntohs(host->port)));
1935 host->hostFlags |= VENUSDOWN;
1937 /* Note: it's safe to delete hosts even if they have call
1938 * back state, because break delayed callbacks (called when a
1939 * message is received from the workstation) will always send a
1940 * break all call backs to the workstation if there is no
1946 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
1947 if (host->interface) {
1948 afsUUID uuid = host->interface->uuid;
1950 code = RXAFSCB_ProbeUuid(host->callback_rxcon, &uuid);
1953 if ( MultiProbeAlternateAddress_r(host) ) {
1955 afs_inet_ntoa_r(host->host, hoststr);
1957 ("ProbeUuid failed for host %s:%d\n",
1958 hoststr, ntohs(host->port)));
1959 host->hostFlags |= VENUSDOWN;
1964 code = RXAFSCB_Probe(host->callback_rxcon);
1968 afs_inet_ntoa_r(host->host, hoststr);
1969 ViceLog(0, ("ProbeUuid failed for host %s:%d\n",
1970 hoststr, ntohs(host->port)));
1971 host->hostFlags |= VENUSDOWN;
1986 * Set VenusDown for any hosts that have not had a call in 15 minutes and
1987 * don't respond to a probe. Note that VenusDown can only be cleared if
1988 * a message is received from the host (see ServerLWP in file.c).
1989 * Delete hosts that have not had any calls in 1 hour, clients that
1990 * have not had any calls in 15 minutes.
1992 * This routine is called roughly every 5 minutes.
1996 afs_uint32 now = FT_ApproxTime();
1998 memset((char *)&zerofid, 0, sizeof(zerofid));
2000 * Send a probe to the workstation if it hasn't been heard from in
2003 checktime = now - 15*60;
2004 clientdeletetime = now - 120*60; /* 2 hours ago */
2005 h_Enumerate(CheckHost, (char *) 0);
2010 * This is called with host locked and held. At this point, the
2011 * hostHashTable should not be having entries for the alternate
2012 * interfaces. This function has to insert these entries in the
2015 * The addresses in the ineterfaceAddr list are in host byte order.
2018 initInterfaceAddr_r(host, interf)
2020 struct interfaceAddr *interf;
2024 afs_int32 myPort, myHost;
2026 struct Interface *interface;
2031 ViceLog(125,("initInterfaceAddr : host %x numAddr %d\n",
2032 host->host, interf->numberOfInterfaces));
2034 number = interf->numberOfInterfaces;
2035 myPort = host->port;
2036 myHost = host->host; /* current interface address */
2038 /* validation checks */
2041 ViceLog(0,("Number of alternate addresses returned is %d\n",
2047 * Convert IP addresses to network byte order, and remove for
2048 * duplicate IP addresses from the interface list.
2050 for (i = 0, count = 0, found = 0; i < number; i++)
2052 interf->addr_in[i] = htonl(interf->addr_in[i]);
2053 for (j = 0 ; j < count ; j++) {
2054 if (interf->addr_in[j] == interf->addr_in[i])
2058 interf->addr_in[count] = interf->addr_in[i];
2059 if (interf->addr_in[count] == myHost)
2066 * Allocate and initialize an interface structure for this host.
2069 interface = (struct Interface *)
2070 malloc(sizeof(struct Interface) +
2071 (sizeof(afs_int32) * (count-1)));
2073 interface->numberOfInterfaces = count;
2075 interface = (struct Interface *)
2076 malloc(sizeof(struct Interface) +
2077 (sizeof(afs_int32) * count));
2079 interface->numberOfInterfaces = count + 1;
2080 interface->addr[count] = myHost;
2082 interface->uuid = interf->uuid;
2083 for (i = 0 ; i < count ; i++)
2084 interface->addr[i] = interf->addr_in[i];
2086 assert(!host->interface);
2087 host->interface = interface;
2089 for ( i=0; i < host->interface->numberOfInterfaces; i++)
2091 ViceLog(125,("--- alt address %x\n", host->interface->addr[i]));
2098 * This is called with host locked and held. At this point, the
2099 * hostHashTable should not be having entries for the alternate
2100 * interfaces. This function has to insert these entries in the
2103 * All addresses are in network byte order.
2106 addInterfaceAddr_r(host, addr)
2113 struct Interface *interface;
2116 assert(host->interface);
2118 ViceLog(125,("addInterfaceAddr : host %x addr %d\n",
2122 * Make sure this address is on the list of known addresses
2125 number = host->interface->numberOfInterfaces;
2126 for ( i=0, found=0; i < number && !found; i++)
2128 if ( host->interface->addr[i] == addr)
2132 interface = (struct Interface *)
2133 malloc(sizeof(struct Interface) +
2134 (sizeof(afs_int32) * number));
2135 interface->numberOfInterfaces = number + 1;
2136 interface->uuid = host->interface->uuid;
2137 for (i = 0 ; i < number ; i++)
2138 interface->addr[i] = host->interface->addr[i];
2139 interface->addr[number] = addr;
2140 free(host->interface);
2141 host->interface = interface;
2145 * Create a hash table entry for this address
2147 hashInsert_r(addr, host);
2152 /* inserts a new HashChain structure corresponding to this address */
2153 hashInsert_r(addr, host)
2158 struct h_hashChain* chain;
2160 /* hash into proper bucket */
2161 index = h_HashIndex(addr);
2163 /* insert into beginning of list for this bucket */
2164 chain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
2166 chain->hostPtr = host;
2167 chain->next = hostHashTable[index];
2169 hostHashTable[index] = chain;
2173 /* inserts a new HashChain structure corresponding to this UUID */
2174 hashInsertUuid_r(uuid, host)
2175 struct afsUUID *uuid;
2179 struct h_hashChain* chain;
2181 /* hash into proper bucket */
2182 index = h_UuidHashIndex(uuid);
2184 /* insert into beginning of list for this bucket */
2185 chain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
2187 chain->hostPtr = host;
2188 chain->next = hostUuidHashTable[index];
2189 hostUuidHashTable[index] = chain;
2192 /* deleted a HashChain structure for this address and host */
2193 /* returns 1 on success */
2195 hashDelete_r(addr, host)
2201 register struct h_hashChain **hp, *th;
2203 for (hp = &hostHashTable[h_HashIndex(addr)]; th = *hp; )
2205 assert(th->hostPtr);
2206 if (th->hostPtr == host && th->addr == addr)
2221 ** prints out all alternate interface address for the host. The 'level'
2222 ** parameter indicates what level of debugging sets this output
2224 printInterfaceAddr(host, level)
2229 if ( host-> interface )
2231 /* check alternate addresses */
2232 number = host->interface->numberOfInterfaces;
2233 assert( number > 0 );
2234 for ( i=0; i < number; i++)
2235 ViceLog(level, ("%x ", host->interface->addr[i]));
2237 ViceLog(level, ("\n"));