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 /* must avoid masking this until after h_OtherHolds_r runs
276 but it should be run before h_TossStuff_r */
277 (host)->holds[h_holdSlot()] &= ~h_holdbit();
278 if ( (host->hostFlags & HOSTDELETED) ||
279 (host->hostFlags & CLIENTDELETED) ) {
283 (host)->holds[h_holdSlot()] &= ~h_holdbit();
285 (host)->holds[h_holdSlot()] &= ~h_holdbit();
291 register struct host *host;
295 retVal = h_Held_r(host);
300 int h_OtherHolds_r(host)
301 register struct host *host;
303 register int i, bit, slot;
306 for (i = 0 ; i < h_maxSlots ; i++) {
307 if (host->holds[i] != ((i == slot) ? bit : 0)) {
314 int h_OtherHolds(host)
315 register struct host *host;
319 retVal = h_OtherHolds_r(host);
325 register struct host *host;
335 * returns 1 if already locked
336 * else returns locks and returns 0
340 register struct host *host;
342 struct Lock *hostLock = &host->lock;
347 if ( !(hostLock->excl_locked) && !(hostLock->readers_reading) )
348 hostLock->excl_locked = WRITE_LOCK;
352 LOCK_UNLOCK(hostLock)
361 #if FS_STATS_DETAILED
362 /*------------------------------------------------------------------------
363 * PRIVATE h_AddrInSameNetwork
366 * Given a target IP address and a candidate IP address (both
367 * in host byte order), return a non-zero value (1) if the
368 * candidate address is in a different network from the target
372 * a_targetAddr : Target address.
373 * a_candAddr : Candidate address.
376 * 1 if the candidate address is in the same net as the target,
380 * The target and candidate addresses are both in host byte
381 * order, NOT network byte order, when passed in. We return
382 * our value as a character, since that's the type of field in
383 * the host structure, where this info will be stored.
387 *------------------------------------------------------------------------*/
389 static char h_AddrInSameNetwork(a_targetAddr, a_candAddr)
390 afs_uint32 a_targetAddr;
391 afs_uint32 a_candAddr;
393 { /*h_AddrInSameNetwork*/
395 afs_uint32 targetNet;
399 * Pull out the network and subnetwork numbers from the target
400 * and candidate addresses. We can short-circuit this whole
401 * affair if the target and candidate addresses are not of the
404 if (IN_CLASSA(a_targetAddr)) {
405 if (!(IN_CLASSA(a_candAddr))) {
408 targetNet = a_targetAddr & IN_CLASSA_NET;
409 candNet = a_candAddr & IN_CLASSA_NET;
412 if (IN_CLASSB(a_targetAddr)) {
413 if (!(IN_CLASSB(a_candAddr))) {
416 targetNet = a_targetAddr & IN_CLASSB_NET;
417 candNet = a_candAddr & IN_CLASSB_NET;
420 if (IN_CLASSC(a_targetAddr)) {
421 if (!(IN_CLASSC(a_candAddr))) {
424 targetNet = a_targetAddr & IN_CLASSC_NET;
425 candNet = a_candAddr & IN_CLASSC_NET;
428 targetNet = a_targetAddr;
429 candNet = a_candAddr;
430 } /*Class D address*/
433 * Now, simply compare the extracted net values for the two addresses
434 * (which at this point are known to be of the same class)
436 if (targetNet == candNet)
441 } /*h_AddrInSameNetwork*/
442 #endif /* FS_STATS_DETAILED */
446 h_gethostcps_r(host,now)
447 register struct host *host;
448 register afs_int32 now;
453 /* at this point, the host might not be locked, nor held */
454 /* make sure that we do not disappear behind the RPC */
455 if ( !(held = h_Held_r(host)) )
458 /* wait if somebody else is already doing the getCPS call */
459 while ( host->hostFlags & HPCS_INPROGRESS )
461 slept = 1; /* I did sleep */
462 host->hostFlags |= HPCS_WAITING; /* I am sleeping now */
463 #ifdef AFS_PTHREAD_ENV
464 pthread_cond_wait(&host->cond, &host_glock_mutex);
465 #else /* AFS_PTHREAD_ENV */
466 if (( code = LWP_WaitProcess( &(host->hostFlags ))) != LWP_SUCCESS)
467 ViceLog(0, ("LWP_WaitProcess returned %d\n", code));
468 #endif /* AFS_PTHREAD_ENV */
472 host->hostFlags |= HPCS_INPROGRESS; /* mark as CPSCall in progress */
473 if (host->hcps.prlist_val)
474 free(host->hcps.prlist_val); /* this is for hostaclRefresh */
475 host->hcps.prlist_val = (afs_int32 *)0;
476 host->hcps.prlist_len = 0;
477 slept? (host->cpsCall = FT_ApproxTime()): (host->cpsCall = now );
480 code = pr_GetHostCPS(htonl(host->host), &host->hcps);
484 * Although ubik_Call (called by pr_GetHostCPS) traverses thru all protection servers
485 * and reevaluates things if no sync server or quorum is found we could still end up
486 * with one of these errors. In such case we would like to reevaluate the rpc call to
487 * find if there's cps for this guy. We treat other errors (except network failures
488 * ones - i.e. code < 0) as an indication that there is no CPS for this host. Ideally
489 * we could like to deal this problem the other way around (i.e. if code == NOCPS
490 * ignore else retry next time) but the problem is that there're other errors (i.e.
491 * EPERM) for which we don't want to retry and we don't know the whole code list!
493 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC) {
495 * We would have preferred to use a while loop and try again since ops in protected
496 * acls for this host will fail now but they'll be reevaluated on any subsequent
497 * call. The attempt to wait for a quorum/sync site or network error won't work
498 * since this problems really should only occurs during a complete fileserver
499 * restart. Since the fileserver will start before the ptservers (and thus before
500 * quorums are complete) clients will be utilizing all the fileserver's lwps!!
502 host->hcpsfailed = 1;
503 ViceLog(0, ("Warning: GetHostCPS failed (%d) for %x; will retry\n", code, host->host));
505 host->hcpsfailed = 0;
506 ViceLog(1, ("gethost: GetHostCPS failed (%d) for %x; ignored\n", code, host->host));
508 if (host->hcps.prlist_val)
509 free(host->hcps.prlist_val);
510 host->hcps.prlist_val = (afs_int32 *)0;
511 host->hcps.prlist_len = 0; /* Make sure it's zero */
513 host->hcpsfailed = 0;
515 host->hostFlags &= ~HPCS_INPROGRESS;
516 /* signal all who are waiting */
517 if ( host->hostFlags & HPCS_WAITING) /* somebody is waiting */
519 host->hostFlags &= ~HPCS_WAITING;
520 #ifdef AFS_PTHREAD_ENV
521 assert(pthread_cond_broadcast(&host->cond) == 0);
522 #else /* AFS_PTHREAD_ENV */
523 if ( (code = LWP_NoYieldSignal( &(host->hostFlags) )) != LWP_SUCCESS )
524 ViceLog(0, ("LWP_NoYieldSignal returns %d\n", code));
525 #endif /* AFS_PTHREAD_ENV */
528 /* if we had held the host, release it now */
533 void h_flushhostcps(hostaddr, hport)
534 register afs_uint32 hostaddr, hport; /* net byte order */
536 register struct host *host;
539 host = h_Lookup_r(hostaddr, hport);
541 host->hcpsfailed = 1;
550 * Allocate a host. It will be identified by the peer (ip,port) info in the
551 * rx connection provided. The host is returned un-held and un-locked
553 #define DEF_ROPCONS 2115
555 struct host *h_Alloc(r_con)
556 register struct rx_connection *r_con;
560 retVal = h_Alloc_r(r_con);
565 struct host *h_Alloc_r(r_con)
566 register struct rx_connection *r_con;
570 struct servent *serverentry;
571 register index = h_HashIndex(rxr_HostOf(r_con));
572 register struct host *host;
573 static struct rx_securityClass *sc = 0;
575 struct h_hashChain* h_hashChain;
576 #if FS_STATS_DETAILED
577 afs_uint32 newHostAddr_HBO; /*New host IP addr, in host byte order*/
578 #endif /* FS_STATS_DETAILED */
582 h_hashChain = (struct h_hashChain*) malloc(sizeof(struct h_hashChain));
584 h_hashChain->hostPtr = host;
585 h_hashChain->addr = rxr_HostOf(r_con);
586 h_hashChain->next = hostHashTable[index];
587 hostHashTable[index] = h_hashChain;
589 host->host = rxr_HostOf(r_con);
590 host->port = rxr_PortOf(r_con);
591 if(consolePort == 0 ) { /* find the portal number for console */
592 #if defined(AFS_OSF_ENV)
593 serverentry = getservbyname("ropcons", "");
595 serverentry = getservbyname("ropcons", 0);
598 consolePort = serverentry->s_port;
600 consolePort = DEF_ROPCONS; /* Use a default */
602 if (host->port == consolePort) host->Console = 1;
603 /* Make a callback channel even for the console, on the off chance that it
604 makes a request that causes a break call back. It shouldn't. */
607 sc = (struct rx_securityClass *) rxnull_NewClientSecurityObject();
608 host->callback_rxcon = rx_NewConnection (host->host, host->port,
610 rx_SetConnDeadTime(host->callback_rxcon, 50);
611 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
613 now = host->LastCall = host->cpsCall = host->ActiveCall = FT_ApproxTime();
615 host->hcps.prlist_val = (afs_int32 *)0;
616 host->hcps.prlist_len = 0;
617 host->hcps.prlist_val = (afs_int32 *)0;
619 /*host->hcpsfailed = 0; /* save cycles */
620 /* h_gethostcps(host); do this under host lock */
621 host->FirstClient = 0;
622 h_InsertList_r(host); /* update global host List */
623 #if FS_STATS_DETAILED
625 * Compare the new host's IP address (in host byte order) with ours
626 * (the File Server's), remembering if they are in the same network.
628 newHostAddr_HBO = (afs_uint32)ntohl(host->host);
629 host->InSameNetwork = h_AddrInSameNetwork(FS_HostAddr_HBO,
631 #endif /* FS_STATS_DETAILED */
637 /* Lookup a host given an IP address and UDP port number. */
638 struct host *h_Lookup(hostaddr, hport)
639 afs_uint32 hostaddr, hport; /* network byte order */
643 retVal = h_Lookup_r(hostaddr, hport);
648 struct host *h_Lookup_r(hostaddr, hport)
649 afs_uint32 hostaddr, hport; /* network byte order */
651 register afs_int32 now;
652 register struct host *host=0;
653 register struct h_hashChain* chain;
654 register index = h_HashIndex(hostaddr);
655 extern int hostaclRefresh;
657 for (chain=hostHashTable[index]; chain; chain=chain->next) {
658 host = chain->hostPtr;
660 if (!(host->hostFlags & HOSTDELETED) && chain->addr == hostaddr
661 && host->port == hport) {
662 now = FT_ApproxTime(); /* always evaluate "now" */
663 if (host->hcpsfailed || (host->cpsCall+hostaclRefresh < now )) {
665 * Every hostaclRefresh period (def 2 hrs) get the new membership list for the host.
666 * Note this could be the first time that the host is added to a group.
667 * Also here we also retry on previous legitimate hcps failures
669 h_gethostcps_r(host,now);
679 /* Lookup a host given its UUID. */
680 struct host *h_LookupUuid_r(uuidp)
683 register struct host *host=0;
684 register struct h_hashChain* chain;
685 register index = h_UuidHashIndex(uuidp);
687 for (chain=hostUuidHashTable[index]; chain; chain=chain->next) {
688 host = chain->hostPtr;
690 if (!(host->hostFlags & HOSTDELETED) && host->interface
691 && afs_uuid_equal(&host->interface->uuid, uuidp)) {
702 * h_Hold: Establish a hold by the current LWP on this host--the host
703 * or its clients will not be physically deleted until all holds have
706 * NOTE: h_Hold_r is a macro defined in host.h.
710 register struct host *host;
719 /* h_TossStuff: Toss anything in the host structure (the host or
720 * clients marked for deletion. Called from r_Release ONLY.
721 * To be called, there must be no holds, and either host->deleted
722 * or host->clientDeleted must be set.
725 register struct host *host;
728 register struct client **cp, *client;
731 /* if somebody still has this host held */
732 for (i=0; (i<h_maxSlots)&&(!(host)->holds[i]); i++);
736 /* ASSUMPTION: r_FreeConnection() does not yield */
737 for (cp = &host->FirstClient; client = *cp; ) {
738 if ((host->hostFlags & HOSTDELETED) || client->deleted) {
739 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val) {
740 free(client->CPS.prlist_val);
741 client->CPS.prlist_val = (afs_int32 *)0;
744 rx_SetSpecific(client->tcon, rxcon_client_key, (void *)0);
746 CurrentConnections--;
749 } else cp = &client->next;
752 /* We've just cleaned out all the deleted clients; clear the flag */
753 host->hostFlags &= ~CLIENTDELETED;
755 if (host->hostFlags & HOSTDELETED) {
756 register struct h_hashChain **hp, *th;
757 register struct rx_connection *rxconn;
762 if (host->Console & 1) Console--;
763 if (rxconn = host->callback_rxcon) {
764 host->callback_rxcon = (struct rx_connection *)0;
766 * If rx_DestroyConnection calls h_FreeConnection we will
767 * deadlock on the host_glock_mutex. Work around the problem
768 * by unhooking the client from the connection before
769 * destroying the connection.
771 client = rx_GetSpecific(rxconn, rxcon_client_key);
772 if (client && client->tcon == rxconn)
774 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
775 rx_DestroyConnection(rxconn);
777 if (host->hcps.prlist_val)
778 free(host->hcps.prlist_val);
779 host->hcps.prlist_val = (afs_int32 *)0;
780 host->hcps.prlist_len = 0;
781 DeleteAllCallBacks_r(host);
782 host->hostFlags &= ~RESETDONE; /* just to be safe */
784 /* if alternate addresses do not exist */
785 if ( !(host->interface) )
787 for (hp = &hostHashTable[h_HashIndex(host->host)];
788 th = *hp; hp = &th->next)
791 if (th->hostPtr == host)
794 h_DeleteList_r(host);
802 /* delete all hash entries for the UUID */
803 uuidp = &host->interface->uuid;
804 for (hp = &hostUuidHashTable[h_UuidHashIndex(uuidp)];
805 th = *hp; hp = &th->next) {
807 if (th->hostPtr == host)
814 /* delete all hash entries for alternate addresses */
815 assert(host->interface->numberOfInterfaces > 0 );
816 for ( i=0; i < host->interface->numberOfInterfaces; i++)
818 hostAddr = host->interface->addr[i];
819 for (hp = &hostHashTable[h_HashIndex(hostAddr)];
820 th = *hp; hp = &th->next)
823 if (th->hostPtr == host)
831 free(host->interface);
832 host->interface = NULL;
833 h_DeleteList_r(host); /* remove host from global host List */
835 } /* if alternate address exists */
840 /* Called by rx when a server connection disappears */
841 h_FreeConnection(tcon)
842 struct rx_connection *tcon;
845 register struct client *client;
847 client = (struct client *) rx_GetSpecific(tcon, rxcon_client_key);
850 if (client->tcon == tcon)
851 client->tcon = (struct rx_connection *)0;
854 } /*h_FreeConnection*/
857 /* h_Enumerate: Calls (*proc)(host, held, param) for at least each host in the
858 * system at the start of the enumeration (perhaps more). Hosts may be deleted
859 * (have delete flag set); ditto for clients. (*proc) is always called with
860 * host h_held(). The hold state of the host with respect to this lwp is passed
861 * to (*proc) as the param held. The proc should return 0 if the host should be
862 * released, 1 if it should be held after enumeration.
864 h_Enumerate(proc, param)
869 register struct host *host, **list;
871 register int i, count;
874 if (hostCount == 0) {
878 list = (struct host **)malloc(hostCount * sizeof(struct host *));
879 assert(list != NULL);
880 held = (int *)malloc(hostCount * sizeof(int));
881 assert(held != NULL);
882 for (count = 0, host = hostList ; host ; host = host->next, count++) {
884 if (!(held[count] = h_Held_r(host)))
887 assert(count == hostCount);
889 for ( i = 0 ; i < count ; i++) {
890 held[i] = (*proc)(list[i], held[i], param);
892 h_Release(list[i]);/* this might free up the host */
898 /* h_Enumerate_r: Calls (*proc)(host, held, param) for at least each host in
899 * the at the start of the enumeration (perhaps more). Hosts may be deleted
900 * (have delete flag set); ditto for clients. (*proc) is always called with
901 * host h_held() and the global host lock (H_LOCK) locked.The hold state of the
902 * host with respect to this lwp is passed to (*proc) as the param held.
903 * The proc should return 0 if the host should be released, 1 if it should
904 * be held after enumeration.
906 h_Enumerate_r(proc, param)
911 register struct host *host;
914 if (hostCount == 0) {
917 for (host = hostList ; host ; host = host->next) {
918 if (!(held = h_Held_r(host)))
920 held = (*proc)(host, held, param);
922 h_Release_r(host);/* this might free up the host */
927 /* Host is returned held */
928 struct host *h_GetHost_r(tcon)
929 struct rx_connection *tcon;
933 struct host *oldHost;
936 struct interfaceAddr interf;
938 afs_int32 buffer[AFS_MAX_INTERFACE_ADDR];
939 struct Identity *identP = NULL;
944 haddr = rxr_HostOf(tcon);
945 hport = rxr_PortOf(tcon);
948 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
949 host = h_Lookup_r(haddr, hport);
950 if (host && !identP && !(host->Console&1)) {
951 /* This is a new connection, and we already have a host
952 * structure for this address. Verify that the identity
953 * of the caller matches the identity in the host structure.
955 if (!(held = h_Held_r(host)))
958 if ( !(host->hostFlags & ALTADDR) )
960 /* Another thread is doing initialization */
962 if ( !held) h_Release_r(host);
963 ViceLog(125, ("Host %x starting h_Lookup again\n", host));
966 host->hostFlags &= ~ALTADDR;
968 code = RXAFSCB_WhoAreYou(host->callback_rxcon, &interf);
970 if ( code == RXGEN_OPCODE ) {
971 identP = (struct Identity *)malloc(1);
973 rx_SetSpecific(tcon, rxcon_ident_key, identP);
974 /* The host on this connection was unable to respond to
975 * the WhoAreYou. We will treat this as a new connection
976 * from the existing host. The worst that can happen is
977 * that we maintain some extra callback state information */
978 if (host->interface) {
980 ("Host %x used to support WhoAreYou, deleting.\n",
982 host->hostFlags |= HOSTDELETED;
984 if (!held) h_Release_r(host);
988 } else if (code == 0) {
990 identP = (struct Identity *)malloc(sizeof(struct Identity));
992 identP->uuid = interf.uuid;
993 rx_SetSpecific(tcon, rxcon_ident_key, identP);
994 /* Check whether the UUID on this connection matches
995 * the UUID in the host structure. If they don't match
996 * then this is not the same host as before. */
997 if ( !host->interface
998 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid) ) {
1000 ("Host %x has changed its identity, deleting.\n",
1002 host->hostFlags |= HOSTDELETED;
1004 if (!held) h_Release_r(host);
1010 afs_inet_ntoa_r(host->host, hoststr);
1011 ViceLog(0,("CB: WhoAreYou failed for %s:%d, error %d\n",
1012 hoststr, ntohs(host->port), code));
1013 host->hostFlags |= VENUSDOWN;
1015 host->hostFlags |= ALTADDR;
1018 if (!(held = h_Held_r(host)))
1020 if ( ! (host->hostFlags & ALTADDR) )
1022 /* another thread is doing the initialisation */
1023 ViceLog(125, ("Host %x waiting for host-init to complete\n",
1027 if ( !held) h_Release_r(host);
1028 ViceLog(125, ("Host %x starting h_Lookup again\n", host));
1031 /* We need to check whether the identity in the host structure
1032 * matches the identity on the connection. If they don't match
1033 * then treat this a new host. */
1034 if ( !(host->Console&1)
1035 && ( ( !identP->valid && host->interface )
1036 || ( identP->valid && !host->interface )
1038 && !afs_uuid_equal(&identP->uuid, &host->interface->uuid) ) ) ) {
1039 /* The host in the cache is not the host for this connection */
1040 host->hostFlags |= HOSTDELETED;
1042 if (!held) h_Release_r(host);
1043 ViceLog(0,("CB: new identity for host %x, deleting\n",
1048 host = h_Alloc_r(tcon);
1051 h_gethostcps_r(host,FT_ApproxTime());
1052 if (!(host->Console&1)) {
1053 if (!identP || !interfValid) {
1055 code = RXAFSCB_WhoAreYou(host->callback_rxcon, &interf);
1057 if ( code == RXGEN_OPCODE ) {
1058 identP = (struct Identity *)malloc(1);
1060 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1062 ("Host %x does not support WhoAreYou.\n",
1065 } else if (code == 0) {
1067 identP = (struct Identity *)malloc(sizeof(struct Identity));
1069 identP->uuid = interf.uuid;
1070 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1071 ViceLog(25,("WhoAreYou success on %x\n", host->host));
1074 if (code == 0 && !identP->valid) {
1076 code = RXAFSCB_InitCallBackState(host->callback_rxcon);
1078 } else if (code == 0) {
1079 oldHost = h_LookupUuid_r(&identP->uuid);
1081 /* This is a new address for an existing host. Update
1082 * the list of interfaces for the existing host and
1083 * delete the host structure we just allocated. */
1084 if (!(held = h_Held_r(oldHost)))
1087 ViceLog(25,("CB: new addr %x for old host %x\n",
1088 host->host, oldHost->host));
1089 host->hostFlags |= HOSTDELETED;
1093 addInterfaceAddr_r(host, haddr);
1095 /* This really is a new host */
1096 hashInsertUuid_r(&identP->uuid, host);
1098 code = RXAFSCB_InitCallBackState3(host->callback_rxcon,
1102 ViceLog(25,("InitCallBackState3 success on %x\n",
1104 assert(interfValid == 1);
1105 initInterfaceAddr_r(host, &interf);
1111 afs_inet_ntoa_r(host->host, hoststr);
1112 ViceLog(0,("CB: RCallBackConnectBack failed for %s:%d\n",
1113 hoststr, ntohs(host->port)));
1114 host->hostFlags |= VENUSDOWN;
1117 host->hostFlags |= RESETDONE;
1120 host->hostFlags |= ALTADDR;/* host structure iniatilisation complete */
1128 static char localcellname[PR_MAXNAMELEN+1];
1129 char local_realm[AFS_REALM_SZ] = "";
1132 void h_InitHostPackage()
1134 afsconf_GetLocalCell (confDir, localcellname, PR_MAXNAMELEN);
1135 if (!local_realm[0]) {
1136 if (afs_krb_get_lrealm(local_realm, 0) != 0/*KSUCCESS*/) {
1137 ViceLog(0, ("afs_krb_get_lrealm failed, using %s.\n",localcellname));
1138 strcpy (local_realm, localcellname);
1141 rxcon_ident_key = rx_KeyCreate((rx_destructor_t)free);
1142 rxcon_client_key = rx_KeyCreate((rx_destructor_t)0);
1143 #ifdef AFS_PTHREAD_ENV
1144 assert(pthread_mutex_init(&host_glock_mutex, NULL) == 0);
1145 #endif /* AFS_PTHREAD_ENV */
1148 static MapName_r(aname, acell, aval)
1157 afs_int32 anamelen, cnamelen;
1161 anamelen=strlen(aname);
1162 if (anamelen >= PR_MAXNAMELEN)
1163 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
1165 lnames.namelist_len = 1;
1166 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
1167 lids.idlist_len = 0;
1168 lids.idlist_val = (afs_int32 *) 0;
1170 cnamelen=strlen(acell);
1172 if (strcasecmp(local_realm, acell) && strcasecmp(localcellname, acell)) {
1173 ViceLog(2, ("MapName: cell is foreign. cell=%s, localcell=%s, localrealm=%s\n",
1174 acell, localcellname, local_realm));
1175 if ((anamelen+cnamelen+1) >= PR_MAXNAMELEN) {
1176 ViceLog(2, ("MapName: Name too long, using AnonymousID for %s@%s\n",
1178 *aval = AnonymousID;
1181 foreign = 1; /* attempt cross-cell authentication */
1182 tname = (char *) malloc(anamelen+cnamelen+2);
1183 strcpy(tname, aname);
1184 tname[anamelen] = '@';
1185 strcpy(tname+anamelen+1, acell);
1186 lnames.namelist_val = (prname *) tname;
1191 code = pr_NameToId(&lnames, &lids);
1194 if (lids.idlist_val) {
1195 *aval = lids.idlist_val[0];
1196 if (*aval == AnonymousID) {
1197 ViceLog(2, ("MapName: NameToId on %s returns anonymousID\n", lnames.namelist_val));
1199 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
1201 ViceLog(0, ("MapName: NameToId on '%s' is unknown\n", lnames.namelist_val));
1207 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
1214 /* NOTE: this returns the client with a Shared lock */
1215 struct client *h_ID2Client(vid)
1218 register struct client *client;
1219 register struct host *host;
1223 for (host=hostList; host; host=host->next) {
1224 if (host->hostFlags & HOSTDELETED)
1226 for (client = host->FirstClient; client; client = client->next) {
1227 if (!client->deleted && client->ViceId == vid) {
1230 ObtainSharedLock(&client->lock);
1244 * Called by the server main loop. Returns a h_Held client, which must be
1245 * released later the main loop. Allocates a client if the matching one
1246 * isn't around. The client is returned with its reference count incremented
1247 * by one. The caller must call h_ReleaseClient_r when finished with
1250 struct client *h_FindClient_r(tcon)
1251 struct rx_connection *tcon;
1254 register struct client *client;
1255 register struct host *host;
1256 struct client *oldClient;
1261 #if (64-MAXKTCNAMELEN)
1262 ticket name length != 64
1266 char uname[PR_MAXNAMELEN];
1267 char tcell[MAXKTCREALMLEN];
1270 client = (struct client *) rx_GetSpecific(tcon, rxcon_client_key);
1271 if (client && !client->deleted) {
1273 h_Hold_r(client->host);
1274 if (client->prfail != 2) { /* Could add shared lock on client here */
1275 /* note that we don't have to lock entry in this path to
1276 * ensure CPS is initialized, since we don't call rxr_SetSpecific
1277 * until initialization is done, and we only get here if
1278 * rx_GetSpecific located the client structure.
1283 ObtainWriteLock(&client->lock); /* released at end */
1285 } else if (client) {
1289 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
1290 ViceLog(5,("FindClient: authenticating connection: authClass=%d\n",
1292 if (authClass == 1) {
1293 /* A bcrypt tickets, no longer supported */
1294 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
1295 viceid = AnonymousID;
1296 expTime = 0x7fffffff;
1297 } else if (authClass == 2) {
1300 /* kerberos ticket */
1301 code = rxkad_GetServerInfo (tcon, /*level*/0, &expTime,
1302 tname, tinst, tcell, &kvno);
1304 ViceLog(1, ("Failed to get rxkad ticket info\n"));
1305 viceid = AnonymousID;
1306 expTime = 0x7fffffff;
1308 int ilen = strlen(tinst);
1310 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
1311 tname, tinst, tcell, expTime, kvno));
1312 strncpy (uname, tname, sizeof(uname));
1314 if (strlen(uname) + 1 + ilen >= sizeof(uname))
1316 strcat (uname, ".");
1317 strcat (uname, tinst);
1319 /* translate the name to a vice id */
1320 code = MapName_r(uname, tcell, &viceid);
1323 ViceLog(1, ("failed to map name=%s, cell=%s -> code=%d\n",
1324 uname, tcell, code));
1326 viceid = AnonymousID;
1327 expTime = 0x7fffffff;
1331 viceid = AnonymousID; /* unknown security class */
1332 expTime = 0x7fffffff;
1336 host = h_GetHost_r(tcon); /* Returns it h_Held */
1338 /* First try to find the client structure */
1339 for (client = host->FirstClient; client; client = client->next) {
1340 if (!client->deleted && (client->sid == rxr_CidOf(tcon)) &&
1341 (client->VenusEpoch == rxr_GetEpoch(tcon))) {
1342 if (client->tcon && (client->tcon != tcon)) {
1343 ViceLog(0, ("*** Vid=%d, sid=%x, tcon=%x, Tcon=%x ***\n",
1344 client->ViceId, client->sid, client->tcon, tcon));
1345 client->tcon = (struct rx_connection *)0;
1349 ObtainWriteLock(&client->lock);
1355 /* Still no client structure - get one */
1358 ObtainWriteLock(&client->lock);
1359 client->host = host;
1360 client->next = host->FirstClient;
1361 host->FirstClient = client;
1362 #if FS_STATS_DETAILED
1363 client->InSameNetwork = host->InSameNetwork;
1364 #endif /* FS_STATS_DETAILED */
1365 client->ViceId = viceid;
1366 client->expTime = expTime; /* rx only */
1367 client->authClass = authClass; /* rx only */
1368 client->sid = rxr_CidOf(tcon);
1369 client->VenusEpoch = rxr_GetEpoch(tcon);
1370 client->CPS.prlist_val = 0;
1371 client->refCount = 1;
1372 CurrentConnections++; /* increment number of connections */
1375 client->prfail = fail;
1377 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
1378 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID)) {
1379 free(client->CPS.prlist_val);
1381 client->CPS.prlist_val = (afs_int32 *)0;
1382 client->ViceId = viceid;
1383 client->expTime = expTime;
1385 if (viceid == ANONYMOUSID) {
1386 client->CPS.prlist_len = AnonCPS.prlist_len;
1387 client->CPS.prlist_val = AnonCPS.prlist_val;
1390 code = pr_GetCPS(viceid, &client->CPS);
1393 ViceLog(0, ("pr_GetCPS failed(%d) for user %d, host %x.%d\n",
1394 code, viceid, client->host->host, ntohs(client->host->port)));
1396 /* Although ubik_Call (called by pr_GetCPS) traverses thru
1397 * all protection servers and reevaluates things if no
1398 * sync server or quorum is found we could still end up
1399 * with one of these errors. In such case we would like to
1400 * reevaluate the rpc call to find if there's cps for this
1401 * guy. We treat other errors (except network failures
1402 * ones - i.e. code < 0) as an indication that there is no
1403 * CPS for this host. Ideally we could like to deal this
1404 * problem the other way around (i.e. if code == NOCPS
1405 * ignore else retry next time) but the problem is that
1406 * there're other errors (i.e. EPERM) for which we don't
1407 * want to retry and we don't know the whole code list!
1409 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
1413 /* the disabling of system:administrators is so iffy and has so many
1414 * possible failure modes that we will disable it again */
1415 /* Turn off System:Administrator for safety
1416 if (AL_IsAMember(SystemId, client->CPS) == 0)
1417 assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
1420 /* Now, tcon may already be set to a rock, since we blocked with no host
1421 * or client locks set above in pr_GetCPS (XXXX some locking is probably
1422 * required). So, before setting the RPC's rock, we should disconnect
1423 * the RPC from the other client structure's rock.
1425 if (oldClient = (struct client *) rx_GetSpecific(tcon, rxcon_client_key)) {
1426 oldClient->tcon = (struct rx_connection *) 0;
1427 /* rx_SetSpecific will be done immediately below */
1429 client->tcon = tcon;
1430 rx_SetSpecific(tcon, rxcon_client_key, client);
1431 ReleaseWriteLock(&client->lock);
1435 } /*h_FindClient_r*/
1437 int h_ReleaseClient_r(client)
1438 struct client *client;
1440 assert(client->refCount > 0);
1447 * Sigh: this one is used to get the client AGAIN within the individual
1448 * server routines. This does not bother h_Holding the host, since
1449 * this is assumed already have been done by the server main loop.
1450 * It does check tokens, since only the server routines can return the
1451 * VICETOKENDEAD error code
1453 int GetClient(tcon, cp)
1454 struct rx_connection * tcon;
1458 register struct client *client;
1462 *cp = client = (struct client *) rx_GetSpecific(tcon, rxcon_client_key);
1464 assert(client && client->tcon && rxr_CidOf(client->tcon) == client->sid);
1466 client->LastCall > client->expTime && client->expTime) {
1467 ViceLog(1, ("Token for %s at %x.%d expired %d\n",
1468 h_UserName(client), client->host->host, client->host->port, client->expTime));
1470 return VICETOKENDEAD;
1479 /* Client user name for short term use. Note that this is NOT inexpensive */
1480 char *h_UserName(client)
1481 struct client *client;
1484 static char User[PR_MAXNAMELEN+1];
1488 lids.idlist_len = 1;
1489 lids.idlist_val = (afs_int32 *)malloc(1*sizeof(afs_int32));
1490 lnames.namelist_len = 0;
1491 lnames.namelist_val = (prname *)0;
1492 lids.idlist_val[0] = client->ViceId;
1493 if (pr_IdToName(&lids,&lnames)) {
1494 /* We need to free id we alloced above! */
1495 free(lids.idlist_val);
1496 return "*UNKNOWN USER NAME*";
1498 strncpy(User,lnames.namelist_val[0],PR_MAXNAMELEN);
1499 free(lids.idlist_val);
1500 free(lnames.namelist_val);
1510 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
1511 CEs, CEBlocks, HTs, HTBlocks));
1516 static int h_PrintClient(host, held, file)
1517 register struct host *host;
1519 StreamHandle_t *file;
1521 register struct client *client;
1527 if (host->hostFlags & HOSTDELETED) {
1531 sprintf(tmpStr,"Host %x.%d down = %d, LastCall %s", host->host,
1532 host->port, (host->hostFlags & VENUSDOWN),
1533 afs_ctime((time_t *)&host->LastCall, tbuffer, sizeof(tbuffer)));
1534 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1535 for (client = host->FirstClient; client; client=client->next) {
1536 if (!client->deleted) {
1538 sprintf(tmpStr, " user id=%d, name=%s, sl=%s till %s",
1539 client->ViceId, h_UserName(client),
1540 client->authClass ? "Authenticated" : "Not authenticated",
1542 afs_ctime((time_t *)&client->expTime, tbuffer, sizeof(tbuffer))
1544 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1547 sprintf(tmpStr, " user=%s, no current server connection\n",
1548 h_UserName(client));
1549 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1551 sprintf(tmpStr, " CPS-%d is [", client->CPS.prlist_len);
1552 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1553 if (client->CPS.prlist_val) {
1554 for (i=0; i > client->CPS.prlist_len; i++) {
1555 sprintf(tmpStr, " %d", client->CPS.prlist_val[i]);
1556 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1559 sprintf(tmpStr, "]\n");
1560 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1571 * Print a list of clients, with last security level and token value seen,
1581 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
1584 ViceLog(0, ("Couldn't create client dump file %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
1587 now = FT_ApproxTime();
1588 sprintf(tmpStr, "List of active users at %s\n",
1589 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
1590 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1591 h_Enumerate(h_PrintClient, (char *)file);
1592 STREAM_REALLYCLOSE(file);
1593 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
1599 static int h_DumpHost(host, held, file)
1600 register struct host *host;
1602 StreamHandle_t *file;
1609 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 [",
1610 host->host, host->port, host->index, host->cblist,
1611 CheckLock(&host->lock), host->LastCall, host->ActiveCall,
1612 (host->hostFlags & VENUSDOWN), host->hostFlags&HOSTDELETED,
1613 host->Console, host->hostFlags & CLIENTDELETED,
1614 host->hcpsfailed, host->cpsCall);
1615 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1616 if (host->hcps.prlist_val)
1617 for (i=0; i < host->hcps.prlist_len; i++) {
1618 sprintf(tmpStr, " %d", host->hcps.prlist_val[i]);
1619 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1621 sprintf(tmpStr, "] [");
1622 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1623 if ( host->interface)
1624 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1625 sprintf(tmpStr, " %x", host->interface->addr[i]);
1626 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1628 sprintf(tmpStr, "] holds: ");
1629 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1631 for (i = 0 ; i < h_maxSlots ; i++) {
1632 sprintf(tmpStr, "%04x", host->holds[i]);
1633 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1635 sprintf(tmpStr, " slot/bit: %d/%d\n", h_holdSlot(), h_holdbit());
1636 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1648 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
1653 ViceLog(0, ("Couldn't create host dump file %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
1656 now = FT_ApproxTime();
1657 sprintf(tmpStr, "List of active hosts at %s\n",
1658 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
1659 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1660 h_Enumerate(h_DumpHost, (char *) file);
1661 STREAM_REALLYCLOSE(file);
1662 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
1668 * This counts the number of workstations, the number of active workstations,
1669 * and the number of workstations declared "down" (i.e. not heard from
1670 * recently). An active workstation has received a call since the cutoff
1671 * time argument passed.
1673 h_GetWorkStats(nump, activep, delp, cutofftime)
1677 afs_int32 cutofftime;
1681 register struct host *host;
1682 register int num=0, active=0, del=0;
1685 for (host = hostList; host; host = host->next) {
1686 if (!(host->hostFlags & HOSTDELETED)) {
1688 if (host->ActiveCall > cutofftime)
1690 if (host->hostFlags & VENUSDOWN)
1702 } /*h_GetWorkStats*/
1705 /*------------------------------------------------------------------------
1706 * PRIVATE h_ClassifyAddress
1709 * Given a target IP address and a candidate IP address (both
1710 * in host byte order), classify the candidate into one of three
1711 * buckets in relation to the target by bumping the counters passed
1715 * a_targetAddr : Target address.
1716 * a_candAddr : Candidate address.
1717 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
1718 * addresses are either in the same network
1719 * or the same subnet.
1720 * a_diffSubnetP : ...when the candidate is in a different
1722 * a_diffNetworkP : ...when the candidate is in a different
1729 * The target and candidate addresses are both in host byte
1730 * order, NOT network byte order, when passed in.
1734 *------------------------------------------------------------------------*/
1736 static void h_ClassifyAddress(a_targetAddr, a_candAddr, a_sameNetOrSubnetP,
1737 a_diffSubnetP, a_diffNetworkP)
1738 afs_uint32 a_targetAddr;
1739 afs_uint32 a_candAddr;
1740 afs_int32 *a_sameNetOrSubnetP;
1741 afs_int32 *a_diffSubnetP;
1742 afs_int32 *a_diffNetworkP;
1744 { /*h_ClassifyAddress*/
1746 register int i; /*Iterator thru host hash table*/
1747 register struct host *hostP; /*Ptr to current host entry*/
1748 register afs_uint32 currHostAddr; /*Current host address*/
1749 afs_uint32 targetNet;
1750 afs_uint32 targetSubnet;
1752 afs_uint32 candSubnet;
1755 * Put bad values into the subnet info to start with.
1757 targetSubnet = (afs_uint32) 0;
1758 candSubnet = (afs_uint32) 0;
1761 * Pull out the network and subnetwork numbers from the target
1762 * and candidate addresses. We can short-circuit this whole
1763 * affair if the target and candidate addresses are not of the
1766 if (IN_CLASSA(a_targetAddr)) {
1767 if (!(IN_CLASSA(a_candAddr))) {
1768 (*a_diffNetworkP)++;
1771 targetNet = a_targetAddr & IN_CLASSA_NET;
1772 candNet = a_candAddr & IN_CLASSA_NET;
1773 if (IN_SUBNETA(a_targetAddr))
1774 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
1775 if (IN_SUBNETA(a_candAddr))
1776 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
1779 if (IN_CLASSB(a_targetAddr)) {
1780 if (!(IN_CLASSB(a_candAddr))) {
1781 (*a_diffNetworkP)++;
1784 targetNet = a_targetAddr & IN_CLASSB_NET;
1785 candNet = a_candAddr & IN_CLASSB_NET;
1786 if (IN_SUBNETB(a_targetAddr))
1787 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
1788 if (IN_SUBNETB(a_candAddr))
1789 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
1790 } /*Class B target*/
1792 if (IN_CLASSC(a_targetAddr)) {
1793 if (!(IN_CLASSC(a_candAddr))) {
1794 (*a_diffNetworkP)++;
1797 targetNet = a_targetAddr & IN_CLASSC_NET;
1798 candNet = a_candAddr & IN_CLASSC_NET;
1801 * Note that class C addresses can't have subnets,
1802 * so we leave the defaults untouched.
1804 } /*Class C target*/
1806 targetNet = a_targetAddr;
1807 candNet = a_candAddr;
1808 } /*Class D address*/
1811 * Now, simply compare the extracted net and subnet values for
1812 * the two addresses (which at this point are known to be of the
1815 if (targetNet == candNet) {
1816 if (targetSubnet == candSubnet)
1817 (*a_sameNetOrSubnetP)++;
1822 (*a_diffNetworkP)++;
1824 } /*h_ClassifyAddress*/
1827 /*------------------------------------------------------------------------
1828 * EXPORTED h_GetHostNetStats
1831 * Iterate through the host table, and classify each (non-deleted)
1832 * host entry into ``proximity'' categories (same net or subnet,
1833 * different subnet, different network).
1836 * a_numHostsP : Set to total number of (non-deleted) hosts.
1837 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
1838 * a_diffSubnetP : Set to # hosts on diff subnet as server.
1839 * a_diffNetworkP : Set to # hosts on diff network as server.
1845 * We only count non-deleted hosts. The storage pointed to by our
1846 * parameters is zeroed upon entry.
1850 *------------------------------------------------------------------------*/
1852 void h_GetHostNetStats(a_numHostsP, a_sameNetOrSubnetP, a_diffSubnetP,
1854 afs_int32 *a_numHostsP;
1855 afs_int32 *a_sameNetOrSubnetP;
1856 afs_int32 *a_diffSubnetP;
1857 afs_int32 *a_diffNetworkP;
1859 { /*h_GetHostNetStats*/
1861 register struct host *hostP; /*Ptr to current host entry*/
1862 register afs_uint32 currAddr_HBO; /*Curr host addr, host byte order*/
1865 * Clear out the storage pointed to by our parameters.
1867 *a_numHostsP = (afs_int32) 0;
1868 *a_sameNetOrSubnetP = (afs_int32) 0;
1869 *a_diffSubnetP = (afs_int32) 0;
1870 *a_diffNetworkP = (afs_int32) 0;
1873 for (hostP = hostList; hostP; hostP = hostP->next) {
1874 if (!(hostP->hostFlags & HOSTDELETED)) {
1876 * Bump the number of undeleted host entries found.
1877 * In classifying the current entry's address, make
1878 * sure to first convert to host byte order.
1881 currAddr_HBO = (afs_uint32)ntohl(hostP->host);
1882 h_ClassifyAddress(FS_HostAddr_HBO,
1887 } /*Only look at non-deleted hosts*/
1888 } /*For each host record hashed to this index*/
1891 } /*h_GetHostNetStats*/
1893 static afs_uint32 checktime;
1894 static afs_uint32 clientdeletetime;
1895 static struct AFSFid zerofid;
1899 * XXXX: This routine could use Multi-R to avoid serializing the timeouts.
1900 * Since it can serialize them, and pile up, it should be a separate LWP
1901 * from other events.
1903 int CheckHost(host, held)
1904 register struct host *host;
1908 register struct client *client;
1909 struct interfaceAddr interf;
1912 /* Host is held by h_Enumerate */
1914 for (client = host->FirstClient; client; client = client->next) {
1915 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
1916 client->deleted = 1;
1917 host->hostFlags |= CLIENTDELETED;
1920 if (host->LastCall < checktime) {
1922 if (!(host->hostFlags & HOSTDELETED)) {
1923 if (host->LastCall < clientdeletetime) {
1924 host->hostFlags |= HOSTDELETED;
1925 if (!(host->hostFlags & VENUSDOWN)) {
1926 host->hostFlags &= ~ALTADDR; /* alternate address invalid*/
1927 if (host->interface) {
1929 code = RXAFSCB_InitCallBackState3(host->callback_rxcon,
1934 code = RXAFSCB_InitCallBackState(host->callback_rxcon);
1937 host->hostFlags |= ALTADDR; /* alternate addresses valid */
1941 afs_inet_ntoa_r(host->host, hoststr);
1943 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
1944 hoststr, ntohs(host->port)));
1945 host->hostFlags |= VENUSDOWN;
1947 /* Note: it's safe to delete hosts even if they have call
1948 * back state, because break delayed callbacks (called when a
1949 * message is received from the workstation) will always send a
1950 * break all call backs to the workstation if there is no
1956 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
1957 if (host->interface) {
1958 afsUUID uuid = host->interface->uuid;
1960 code = RXAFSCB_ProbeUuid(host->callback_rxcon, &uuid);
1963 if ( MultiProbeAlternateAddress_r(host) ) {
1965 afs_inet_ntoa_r(host->host, hoststr);
1967 ("ProbeUuid failed for host %s:%d\n",
1968 hoststr, ntohs(host->port)));
1969 host->hostFlags |= VENUSDOWN;
1974 code = RXAFSCB_Probe(host->callback_rxcon);
1978 afs_inet_ntoa_r(host->host, hoststr);
1979 ViceLog(0, ("ProbeUuid failed for host %s:%d\n",
1980 hoststr, ntohs(host->port)));
1981 host->hostFlags |= VENUSDOWN;
1996 * Set VenusDown for any hosts that have not had a call in 15 minutes and
1997 * don't respond to a probe. Note that VenusDown can only be cleared if
1998 * a message is received from the host (see ServerLWP in file.c).
1999 * Delete hosts that have not had any calls in 1 hour, clients that
2000 * have not had any calls in 15 minutes.
2002 * This routine is called roughly every 5 minutes.
2006 afs_uint32 now = FT_ApproxTime();
2008 memset((char *)&zerofid, 0, sizeof(zerofid));
2010 * Send a probe to the workstation if it hasn't been heard from in
2013 checktime = now - 15*60;
2014 clientdeletetime = now - 120*60; /* 2 hours ago */
2015 h_Enumerate(CheckHost, (char *) 0);
2020 * This is called with host locked and held. At this point, the
2021 * hostHashTable should not be having entries for the alternate
2022 * interfaces. This function has to insert these entries in the
2025 * The addresses in the ineterfaceAddr list are in host byte order.
2028 initInterfaceAddr_r(host, interf)
2030 struct interfaceAddr *interf;
2034 afs_int32 myPort, myHost;
2036 struct Interface *interface;
2041 ViceLog(125,("initInterfaceAddr : host %x numAddr %d\n",
2042 host->host, interf->numberOfInterfaces));
2044 number = interf->numberOfInterfaces;
2045 myPort = host->port;
2046 myHost = host->host; /* current interface address */
2048 /* validation checks */
2051 ViceLog(0,("Number of alternate addresses returned is %d\n",
2057 * Convert IP addresses to network byte order, and remove for
2058 * duplicate IP addresses from the interface list.
2060 for (i = 0, count = 0, found = 0; i < number; i++)
2062 interf->addr_in[i] = htonl(interf->addr_in[i]);
2063 for (j = 0 ; j < count ; j++) {
2064 if (interf->addr_in[j] == interf->addr_in[i])
2068 interf->addr_in[count] = interf->addr_in[i];
2069 if (interf->addr_in[count] == myHost)
2076 * Allocate and initialize an interface structure for this host.
2079 interface = (struct Interface *)
2080 malloc(sizeof(struct Interface) +
2081 (sizeof(afs_int32) * (count-1)));
2083 interface->numberOfInterfaces = count;
2085 interface = (struct Interface *)
2086 malloc(sizeof(struct Interface) +
2087 (sizeof(afs_int32) * count));
2089 interface->numberOfInterfaces = count + 1;
2090 interface->addr[count] = myHost;
2092 interface->uuid = interf->uuid;
2093 for (i = 0 ; i < count ; i++)
2094 interface->addr[i] = interf->addr_in[i];
2096 assert(!host->interface);
2097 host->interface = interface;
2099 for ( i=0; i < host->interface->numberOfInterfaces; i++)
2101 ViceLog(125,("--- alt address %x\n", host->interface->addr[i]));
2108 * This is called with host locked and held. At this point, the
2109 * hostHashTable should not be having entries for the alternate
2110 * interfaces. This function has to insert these entries in the
2113 * All addresses are in network byte order.
2116 addInterfaceAddr_r(host, addr)
2123 struct Interface *interface;
2126 assert(host->interface);
2128 ViceLog(125,("addInterfaceAddr : host %x addr %d\n",
2132 * Make sure this address is on the list of known addresses
2135 number = host->interface->numberOfInterfaces;
2136 for ( i=0, found=0; i < number && !found; i++)
2138 if ( host->interface->addr[i] == addr)
2142 interface = (struct Interface *)
2143 malloc(sizeof(struct Interface) +
2144 (sizeof(afs_int32) * number));
2145 interface->numberOfInterfaces = number + 1;
2146 interface->uuid = host->interface->uuid;
2147 for (i = 0 ; i < number ; i++)
2148 interface->addr[i] = host->interface->addr[i];
2149 interface->addr[number] = addr;
2150 free(host->interface);
2151 host->interface = interface;
2155 * Create a hash table entry for this address
2157 hashInsert_r(addr, host);
2162 /* inserts a new HashChain structure corresponding to this address */
2163 hashInsert_r(addr, host)
2168 struct h_hashChain* chain;
2170 /* hash into proper bucket */
2171 index = h_HashIndex(addr);
2173 /* insert into beginning of list for this bucket */
2174 chain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
2176 chain->hostPtr = host;
2177 chain->next = hostHashTable[index];
2179 hostHashTable[index] = chain;
2183 /* inserts a new HashChain structure corresponding to this UUID */
2184 hashInsertUuid_r(uuid, host)
2185 struct afsUUID *uuid;
2189 struct h_hashChain* chain;
2191 /* hash into proper bucket */
2192 index = h_UuidHashIndex(uuid);
2194 /* insert into beginning of list for this bucket */
2195 chain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
2197 chain->hostPtr = host;
2198 chain->next = hostUuidHashTable[index];
2199 hostUuidHashTable[index] = chain;
2202 /* deleted a HashChain structure for this address and host */
2203 /* returns 1 on success */
2205 hashDelete_r(addr, host)
2211 register struct h_hashChain **hp, *th;
2213 for (hp = &hostHashTable[h_HashIndex(addr)]; th = *hp; )
2215 assert(th->hostPtr);
2216 if (th->hostPtr == host && th->addr == addr)
2231 ** prints out all alternate interface address for the host. The 'level'
2232 ** parameter indicates what level of debugging sets this output
2234 printInterfaceAddr(host, level)
2239 if ( host-> interface )
2241 /* check alternate addresses */
2242 number = host->interface->numberOfInterfaces;
2243 assert( number > 0 );
2244 for ( i=0; i < number; i++)
2245 ViceLog(level, ("%x ", host->interface->addr[i]));
2247 ViceLog(level, ("\n"));