2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 #include <afsconfig.h>
11 #include <afs/param.h>
23 #include <netinet/in.h>
36 #include <afs/assert.h>
39 #include <afs/afsint.h>
40 #include <afs/rxgen_consts.h>
42 #include <afs/errors.h>
43 #include <afs/ihandle.h>
44 #include <afs/vnode.h>
45 #include <afs/volume.h>
46 #ifdef AFS_ATHENA_STDENV
50 #include <afs/ptclient.h>
51 #include <afs/prs_fs.h>
53 #include <afs/afsutil.h>
55 #include <afs/cellconfig.h>
57 #include "viced_prototypes.h"
62 #ifdef AFS_PTHREAD_ENV
63 pthread_mutex_t host_glock_mutex;
64 #endif /* AFS_PTHREAD_ENV */
67 extern int CurrentConnections;
69 extern int AnonymousID;
70 extern prlist AnonCPS;
72 extern struct afsconf_dir *confDir; /* config dir object */
73 extern int lwps; /* the max number of server threads */
74 extern afsUUID FS_HostUUID;
76 int CEs = 0; /* active clients */
77 int CEBlocks = 0; /* number of blocks of CEs */
78 struct client *CEFree = 0; /* first free client */
79 struct host *hostList = 0; /* linked list of all hosts */
80 int hostCount = 0; /* number of hosts in hostList */
84 #define CESPERBLOCK 73
85 struct CEBlock /* block of CESPERBLOCK file entries */
87 struct client entry[CESPERBLOCK];
91 * Make sure the subnet macros have been defined.
94 #define IN_SUBNETA(i) ((((afs_int32)(i))&0x80800000)==0x00800000)
97 #ifndef IN_CLASSA_SUBNET
98 #define IN_CLASSA_SUBNET 0xffff0000
102 #define IN_SUBNETB(i) ((((afs_int32)(i))&0xc0008000)==0x80008000)
105 #ifndef IN_CLASSB_SUBNET
106 #define IN_CLASSB_SUBNET 0xffffff00
109 #define rxr_GetEpoch(aconn) (((struct rx_connection *)(aconn))->epoch)
111 #define rxr_CidOf(aconn) (((struct rx_connection *)(aconn))->cid)
113 #define rxr_PortOf(aconn) \
114 rx_PortOf(rx_PeerOf(((struct rx_connection *)(aconn))))
116 #define rxr_HostOf(aconn) \
117 rx_HostOf(rx_PeerOf((struct rx_connection *)(aconn)))
120 /* get a new block of CEs and chain it on CEFree */
121 static void GetCEBlock()
123 register struct CEBlock *block;
126 block = (struct CEBlock *)malloc(sizeof(struct CEBlock));
128 ViceLog(0, ("Failed malloc in GetCEBlock\n"));
129 ShutDownAndCore(PANIC);
132 for(i = 0; i < (CESPERBLOCK -1); i++) {
133 Lock_Init(&block->entry[i].lock);
134 block->entry[i].next = &(block->entry[i+1]);
136 block->entry[CESPERBLOCK-1].next = 0;
137 Lock_Init(&block->entry[CESPERBLOCK-1].lock);
138 CEFree = (struct client *)block;
144 /* get the next available CE */
145 static struct client *GetCE()
147 register struct client *entry;
152 ViceLog(0, ("CEFree NULL in GetCE\n"));
153 ShutDownAndCore(PANIC);
157 CEFree = entry->next;
159 memset((char *)entry, 0, CLIENT_TO_ZERO(entry));
165 /* return an entry to the free list */
166 static void FreeCE(register struct client *entry)
168 entry->next = CEFree;
175 * The HTs and HTBlocks variables were formerly static, but they are
176 * now referenced elsewhere in the FileServer.
178 int HTs = 0; /* active file entries */
179 int HTBlocks = 0; /* number of blocks of HTs */
180 static struct host *HTFree = 0; /* first free file entry */
183 * Hash tables of host pointers. We need two tables, one
184 * to map IP addresses onto host pointers, and another
185 * to map host UUIDs onto host pointers.
187 static struct h_hashChain *hostHashTable[h_HASHENTRIES];
188 static struct h_hashChain *hostUuidHashTable[h_HASHENTRIES];
189 #define h_HashIndex(hostip) ((hostip) & (h_HASHENTRIES-1))
190 #define h_UuidHashIndex(uuidp) (((int)(afs_uuid_hash(uuidp))) & (h_HASHENTRIES-1))
192 struct HTBlock /* block of HTSPERBLOCK file entries */
194 struct host entry[h_HTSPERBLOCK];
198 /* get a new block of HTs and chain it on HTFree */
199 static void GetHTBlock()
201 register struct HTBlock *block;
203 static int index = 0;
205 block = (struct HTBlock *)malloc(sizeof(struct HTBlock));
207 ViceLog(0, ("Failed malloc in GetHTBlock\n"));
208 ShutDownAndCore(PANIC);
211 #ifdef AFS_PTHREAD_ENV
212 for(i=0; i < (h_HTSPERBLOCK); i++)
213 assert(pthread_cond_init(&block->entry[i].cond, NULL) == 0);
214 #endif /* AFS_PTHREAD_ENV */
215 for(i=0; i < (h_HTSPERBLOCK); i++)
216 Lock_Init(&block->entry[i].lock);
217 for(i=0; i < (h_HTSPERBLOCK -1); i++)
218 block->entry[i].next = &(block->entry[i+1]);
219 for (i=0; i< (h_HTSPERBLOCK); i++)
220 block->entry[i].index = index++;
221 block->entry[h_HTSPERBLOCK-1].next = 0;
222 HTFree = (struct host *)block;
223 hosttableptrs[HTBlocks++] = block->entry;
228 /* get the next available HT */
229 static struct host *GetHT()
231 register struct host *entry;
237 HTFree = entry->next;
239 memset((char *)entry, 0, HOST_TO_ZERO(entry));
245 /* return an entry to the free list */
246 static void FreeHT(register struct host *entry)
248 entry->next = HTFree;
255 static short consolePort = 0;
257 int h_Release(register struct host *host)
266 * If this thread does not have a hold on this host AND
267 * if other threads also dont have any holds on this host AND
268 * If either the HOSTDELETED or CLIENTDELETED flags are set
271 int h_Release_r(register struct host *host)
274 if (!((host)->holds[h_holdSlot()] & ~h_holdbit()) ) {
275 if (! h_OtherHolds_r(host) ) {
276 /* must avoid masking this until after h_OtherHolds_r runs
277 but it should be run before h_TossStuff_r */
278 (host)->holds[h_holdSlot()] &= ~h_holdbit();
279 if ( (host->hostFlags & HOSTDELETED) ||
280 (host->hostFlags & CLIENTDELETED) ) {
284 (host)->holds[h_holdSlot()] &= ~h_holdbit();
286 (host)->holds[h_holdSlot()] &= ~h_holdbit();
291 int h_OtherHolds_r(register struct host *host)
293 register int i, bit, slot;
296 for (i = 0 ; i < h_maxSlots ; i++) {
297 if (host->holds[i] != ((i == slot) ? bit : 0)) {
304 int h_Lock_r(register struct host *host)
314 * returns 1 if already locked
315 * else returns locks and returns 0
318 int h_NBLock_r(register struct host *host)
320 struct Lock *hostLock = &host->lock;
325 if ( !(hostLock->excl_locked) && !(hostLock->readers_reading) )
326 hostLock->excl_locked = WRITE_LOCK;
330 LOCK_UNLOCK(hostLock)
339 #if FS_STATS_DETAILED
340 /*------------------------------------------------------------------------
341 * PRIVATE h_AddrInSameNetwork
344 * Given a target IP address and a candidate IP address (both
345 * in host byte order), return a non-zero value (1) if the
346 * candidate address is in a different network from the target
350 * a_targetAddr : Target address.
351 * a_candAddr : Candidate address.
354 * 1 if the candidate address is in the same net as the target,
358 * The target and candidate addresses are both in host byte
359 * order, NOT network byte order, when passed in. We return
360 * our value as a character, since that's the type of field in
361 * the host structure, where this info will be stored.
365 *------------------------------------------------------------------------*/
367 static char h_AddrInSameNetwork(afs_uint32 a_targetAddr, afs_uint32 a_candAddr)
368 { /*h_AddrInSameNetwork*/
370 afs_uint32 targetNet;
374 * Pull out the network and subnetwork numbers from the target
375 * and candidate addresses. We can short-circuit this whole
376 * affair if the target and candidate addresses are not of the
379 if (IN_CLASSA(a_targetAddr)) {
380 if (!(IN_CLASSA(a_candAddr))) {
383 targetNet = a_targetAddr & IN_CLASSA_NET;
384 candNet = a_candAddr & IN_CLASSA_NET;
387 if (IN_CLASSB(a_targetAddr)) {
388 if (!(IN_CLASSB(a_candAddr))) {
391 targetNet = a_targetAddr & IN_CLASSB_NET;
392 candNet = a_candAddr & IN_CLASSB_NET;
395 if (IN_CLASSC(a_targetAddr)) {
396 if (!(IN_CLASSC(a_candAddr))) {
399 targetNet = a_targetAddr & IN_CLASSC_NET;
400 candNet = a_candAddr & IN_CLASSC_NET;
403 targetNet = a_targetAddr;
404 candNet = a_candAddr;
405 } /*Class D address*/
408 * Now, simply compare the extracted net values for the two addresses
409 * (which at this point are known to be of the same class)
411 if (targetNet == candNet)
416 } /*h_AddrInSameNetwork*/
417 #endif /* FS_STATS_DETAILED */
422 h_gethostcps_r(register struct host *host, register afs_int32 now)
427 /* at this point, the host might not be locked, nor held */
428 /* make sure that we do not disappear behind the RPC */
429 if ( !(held = h_Held_r(host)) )
432 /* wait if somebody else is already doing the getCPS call */
433 while ( host->hostFlags & HCPS_INPROGRESS )
435 slept = 1; /* I did sleep */
436 host->hostFlags |= HCPS_WAITING; /* I am sleeping now */
437 #ifdef AFS_PTHREAD_ENV
438 pthread_cond_wait(&host->cond, &host_glock_mutex);
439 #else /* AFS_PTHREAD_ENV */
440 if (( code = LWP_WaitProcess( &(host->hostFlags ))) != LWP_SUCCESS)
441 ViceLog(0, ("LWP_WaitProcess returned %d\n", code));
442 #endif /* AFS_PTHREAD_ENV */
446 host->hostFlags |= HCPS_INPROGRESS; /* mark as CPSCall in progress */
447 if (host->hcps.prlist_val)
448 free(host->hcps.prlist_val); /* this is for hostaclRefresh */
449 host->hcps.prlist_val = NULL;
450 host->hcps.prlist_len = 0;
451 slept? (host->cpsCall = FT_ApproxTime()): (host->cpsCall = now );
454 code = pr_GetHostCPS(htonl(host->host), &host->hcps);
458 * Although ubik_Call (called by pr_GetHostCPS) traverses thru all protection servers
459 * and reevaluates things if no sync server or quorum is found we could still end up
460 * with one of these errors. In such case we would like to reevaluate the rpc call to
461 * find if there's cps for this guy. We treat other errors (except network failures
462 * ones - i.e. code < 0) as an indication that there is no CPS for this host. Ideally
463 * we could like to deal this problem the other way around (i.e. if code == NOCPS
464 * ignore else retry next time) but the problem is that there're other errors (i.e.
465 * EPERM) for which we don't want to retry and we don't know the whole code list!
467 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC) {
469 * We would have preferred to use a while loop and try again since ops in protected
470 * acls for this host will fail now but they'll be reevaluated on any subsequent
471 * call. The attempt to wait for a quorum/sync site or network error won't work
472 * since this problems really should only occurs during a complete fileserver
473 * restart. Since the fileserver will start before the ptservers (and thus before
474 * quorums are complete) clients will be utilizing all the fileserver's lwps!!
476 host->hcpsfailed = 1;
477 ViceLog(0, ("Warning: GetHostCPS failed (%d) for %x; will retry\n", code, host->host));
479 host->hcpsfailed = 0;
480 ViceLog(1, ("gethost: GetHostCPS failed (%d) for %x; ignored\n", code, host->host));
482 if (host->hcps.prlist_val)
483 free(host->hcps.prlist_val);
484 host->hcps.prlist_val = NULL;
485 host->hcps.prlist_len = 0; /* Make sure it's zero */
487 host->hcpsfailed = 0;
489 host->hostFlags &= ~HCPS_INPROGRESS;
490 /* signal all who are waiting */
491 if ( host->hostFlags & HCPS_WAITING) /* somebody is waiting */
493 host->hostFlags &= ~HCPS_WAITING;
494 #ifdef AFS_PTHREAD_ENV
495 assert(pthread_cond_broadcast(&host->cond) == 0);
496 #else /* AFS_PTHREAD_ENV */
497 if ( (code = LWP_NoYieldSignal( &(host->hostFlags) )) != LWP_SUCCESS )
498 ViceLog(0, ("LWP_NoYieldSignal returns %d\n", code));
499 #endif /* AFS_PTHREAD_ENV */
502 /* if we had held the host, release it now */
507 void h_flushhostcps(hostaddr, hport)
508 register afs_uint32 hostaddr, hport; /* net byte order */
510 register struct host *host;
514 host = h_Lookup_r(hostaddr, hport, &held);
516 host->hcpsfailed = 1;
527 * Allocate a host. It will be identified by the peer (ip,port) info in the
528 * rx connection provided. The host is returned held and locked
530 #define DEF_ROPCONS 2115
532 struct host *h_Alloc_r(register struct rx_connection *r_con)
535 struct servent *serverentry;
536 register index = h_HashIndex(rxr_HostOf(r_con));
537 register struct host *host;
538 static struct rx_securityClass *sc = 0;
540 struct h_hashChain* h_hashChain;
541 #if FS_STATS_DETAILED
542 afs_uint32 newHostAddr_HBO; /*New host IP addr, in host byte order*/
543 #endif /* FS_STATS_DETAILED */
547 h_hashChain = (struct h_hashChain*) malloc(sizeof(struct h_hashChain));
549 ViceLog(0, ("Failed malloc in h_Alloc_r\n"));
552 h_hashChain->hostPtr = host;
553 h_hashChain->addr = rxr_HostOf(r_con);
554 h_hashChain->next = hostHashTable[index];
555 hostHashTable[index] = h_hashChain;
557 host->host = rxr_HostOf(r_con);
558 host->port = rxr_PortOf(r_con);
559 if(consolePort == 0 ) { /* find the portal number for console */
560 #if defined(AFS_OSF_ENV)
561 serverentry = getservbyname("ropcons", "");
563 serverentry = getservbyname("ropcons", 0);
566 consolePort = serverentry->s_port;
568 consolePort = DEF_ROPCONS; /* Use a default */
570 if (host->port == consolePort) host->Console = 1;
571 /* Make a callback channel even for the console, on the off chance that it
572 makes a request that causes a break call back. It shouldn't. */
575 sc = rxnull_NewClientSecurityObject();
576 host->callback_rxcon = rx_NewConnection (host->host, host->port,
578 rx_SetConnDeadTime(host->callback_rxcon, 50);
579 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
581 now = host->LastCall = host->cpsCall = host->ActiveCall = FT_ApproxTime();
583 host->hcps.prlist_val = NULL;
584 host->hcps.prlist_len = 0;
585 host->hcps.prlist_val = NULL;
588 host->hcpsfailed = 0; /* save cycles */
589 h_gethostcps(host); /* do this under host lock */
591 host->FirstClient = 0;
594 h_InsertList_r(host); /* update global host List */
595 #if FS_STATS_DETAILED
597 * Compare the new host's IP address (in host byte order) with ours
598 * (the File Server's), remembering if they are in the same network.
600 newHostAddr_HBO = (afs_uint32)ntohl(host->host);
601 host->InSameNetwork = h_AddrInSameNetwork(FS_HostAddr_HBO,
603 #endif /* FS_STATS_DETAILED */
609 /* Lookup a host given an IP address and UDP port number. */
610 /* hostaddr and hport are in network order */
611 /* Note: host should be released by caller if 0 == *heldp and non-null */
612 /* hostaddr and hport are in network order */
613 struct host *h_Lookup_r(afs_uint32 hostaddr, afs_uint32 hport, int *heldp)
615 register afs_int32 now;
616 register struct host *host=0;
617 register struct h_hashChain* chain;
618 register index = h_HashIndex(hostaddr);
619 extern int hostaclRefresh;
622 for (chain=hostHashTable[index]; chain; chain=chain->next) {
623 host = chain->hostPtr;
625 if (!(host->hostFlags & HOSTDELETED) && chain->addr == hostaddr
626 && host->port == hport) {
627 *heldp = h_Held_r(host);
631 if (host->hostFlags & HOSTDELETED) {
638 now = FT_ApproxTime(); /* always evaluate "now" */
639 if (host->hcpsfailed || (host->cpsCall+hostaclRefresh < now )) {
641 * Every hostaclRefresh period (def 2 hrs) get the new
642 * membership list for the host. Note this could be the
643 * first time that the host is added to a group. Also
644 * here we also retry on previous legitimate hcps failures.
646 h_gethostcps_r(host,now);
656 /* Lookup a host given its UUID. */
657 struct host *h_LookupUuid_r(afsUUID *uuidp)
659 register struct host *host=0;
660 register struct h_hashChain* chain;
661 register index = h_UuidHashIndex(uuidp);
663 for (chain=hostUuidHashTable[index]; chain; chain=chain->next) {
664 host = chain->hostPtr;
666 if (!(host->hostFlags & HOSTDELETED) && host->interface
667 && afs_uuid_equal(&host->interface->uuid, uuidp)) {
678 * h_Hold_r: Establish a hold by the current LWP on this host--the host
679 * or its clients will not be physically deleted until all holds have
681 * NOTE: h_Hold_r is a macro defined in host.h.
684 /* h_TossStuff_r: Toss anything in the host structure (the host or
685 * clients marked for deletion. Called from r_Release ONLY.
686 * To be called, there must be no holds, and either host->deleted
687 * or host->clientDeleted must be set.
689 int h_TossStuff_r(register struct host *host)
691 register struct client **cp, *client;
694 /* if somebody still has this host held */
695 for (i=0; (i<h_maxSlots)&&(!(host)->holds[i]); i++);
699 /* ASSUMPTION: r_FreeConnection() does not yield */
700 for (cp = &host->FirstClient; (client = *cp); ) {
701 if ((host->hostFlags & HOSTDELETED) || client->deleted) {
702 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val) {
703 free(client->CPS.prlist_val);
704 client->CPS.prlist_val = NULL;
707 rx_SetSpecific(client->tcon, rxcon_client_key, (void *)0);
709 CurrentConnections--;
712 } else cp = &client->next;
715 /* We've just cleaned out all the deleted clients; clear the flag */
716 host->hostFlags &= ~CLIENTDELETED;
718 if (host->hostFlags & HOSTDELETED) {
719 register struct h_hashChain **hp, *th;
720 register struct rx_connection *rxconn;
725 if (host->Console & 1) Console--;
726 if ((rxconn = host->callback_rxcon)) {
727 host->callback_rxcon = (struct rx_connection *)0;
729 * If rx_DestroyConnection calls h_FreeConnection we will
730 * deadlock on the host_glock_mutex. Work around the problem
731 * by unhooking the client from the connection before
732 * destroying the connection.
734 client = rx_GetSpecific(rxconn, rxcon_client_key);
735 if (client && client->tcon == rxconn)
737 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
738 rx_DestroyConnection(rxconn);
740 if (host->hcps.prlist_val)
741 free(host->hcps.prlist_val);
742 host->hcps.prlist_val = NULL;
743 host->hcps.prlist_len = 0;
744 DeleteAllCallBacks_r(host, 1);
745 host->hostFlags &= ~RESETDONE; /* just to be safe */
747 /* if alternate addresses do not exist */
748 if ( !(host->interface) )
750 for (hp = &hostHashTable[h_HashIndex(host->host)];
751 (th = *hp); hp = &th->next)
754 if (th->hostPtr == host)
757 h_DeleteList_r(host);
765 /* delete all hash entries for the UUID */
766 uuidp = &host->interface->uuid;
767 for (hp = &hostUuidHashTable[h_UuidHashIndex(uuidp)];
768 (th = *hp); hp = &th->next) {
770 if (th->hostPtr == host)
777 /* delete all hash entries for alternate addresses */
778 assert(host->interface->numberOfInterfaces > 0 );
779 for ( i=0; i < host->interface->numberOfInterfaces; i++)
781 hostAddr = host->interface->addr[i];
782 for (hp = &hostHashTable[h_HashIndex(hostAddr)];
783 (th = *hp); hp = &th->next)
786 if (th->hostPtr == host)
794 free(host->interface);
795 host->interface = NULL;
796 h_DeleteList_r(host); /* remove host from global host List */
798 } /* if alternate address exists */
803 /* Called by rx when a server connection disappears */
804 int h_FreeConnection(struct rx_connection *tcon)
806 register struct client *client;
808 client = (struct client *) rx_GetSpecific(tcon, rxcon_client_key);
811 if (client->tcon == tcon)
812 client->tcon = (struct rx_connection *)0;
815 } /*h_FreeConnection*/
818 /* h_Enumerate: Calls (*proc)(host, held, param) for at least each host in the
819 * system at the start of the enumeration (perhaps more). Hosts may be deleted
820 * (have delete flag set); ditto for clients. (*proc) is always called with
821 * host h_held(). The hold state of the host with respect to this lwp is passed
822 * to (*proc) as the param held. The proc should return 0 if the host should be
823 * released, 1 if it should be held after enumeration.
825 void h_Enumerate(int (*proc)(), char *param)
827 register struct host *host, **list;
829 register int i, count;
832 if (hostCount == 0) {
836 list = (struct host **)malloc(hostCount * sizeof(struct host *));
838 ViceLog(0, ("Failed malloc in h_Enumerate\n"));
841 held = (int *)malloc(hostCount * sizeof(int));
843 ViceLog(0, ("Failed malloc in h_Enumerate\n"));
846 for (count = 0, host = hostList ; host ; host = host->next, count++) {
848 if (!(held[count] = h_Held_r(host)))
851 assert(count == hostCount);
853 for ( i = 0 ; i < count ; i++) {
854 held[i] = (*proc)(list[i], held[i], param);
856 h_Release(list[i]);/* this might free up the host */
862 /* h_Enumerate_r (revised):
863 * Calls (*proc)(host, held, param) for each host in hostList, starting
865 * Hosts may be deleted (have delete flag set); ditto for clients.
866 * (*proc) is always called with
867 * host h_held() and the global host lock (H_LOCK) locked.The hold state of the
868 * host with respect to this lwp is passed to (*proc) as the param held.
869 * The proc should return 0 if the host should be released, 1 if it should
870 * be held after enumeration.
872 void h_Enumerate_r(int (*proc)(), struct host* enumstart, char *param)
874 register struct host *host;
877 if (hostCount == 0) {
880 for (host = enumstart ; host ; host = host->next) {
881 if (!(held = h_Held_r(host)))
883 held = (*proc)(host, held, param);
885 h_Release_r(host);/* this might free up the host */
889 /* inserts a new HashChain structure corresponding to this UUID */
890 void hashInsertUuid_r(struct afsUUID *uuid, struct host* host)
893 struct h_hashChain* chain;
895 /* hash into proper bucket */
896 index = h_UuidHashIndex(uuid);
898 /* insert into beginning of list for this bucket */
899 chain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
901 ViceLog(0, ("Failed malloc in hashInsertUuid_r\n"));
905 chain->hostPtr = host;
906 chain->next = hostUuidHashTable[index];
907 hostUuidHashTable[index] = chain;
910 /* Host is returned held */
911 struct host *h_GetHost_r(struct rx_connection *tcon)
914 struct host *oldHost;
917 struct interfaceAddr interf;
919 struct Identity *identP = NULL;
923 char hoststr[16], hoststr2[16];
925 haddr = rxr_HostOf(tcon);
926 hport = rxr_PortOf(tcon);
929 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
930 host = h_Lookup_r(haddr, hport, &held);
931 if (host && !identP && !(host->Console&1)) {
932 /* This is a new connection, and we already have a host
933 * structure for this address. Verify that the identity
934 * of the caller matches the identity in the host structure.
937 if ( !(host->hostFlags & ALTADDR) )
939 /* Another thread is doing initialization */
941 if ( !held) h_Release_r(host);
942 ViceLog(125, ("Host %s:%d starting h_Lookup again\n",
943 afs_inet_ntoa_r(host->host, hoststr), host->port));
946 host->hostFlags &= ~ALTADDR;
948 code = RXAFSCB_WhoAreYou(host->callback_rxcon, &interf);
950 if ( code == RXGEN_OPCODE ) {
951 identP = (struct Identity *)malloc(sizeof(struct Identity));
953 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
957 rx_SetSpecific(tcon, rxcon_ident_key, identP);
958 /* The host on this connection was unable to respond to
959 * the WhoAreYou. We will treat this as a new connection
960 * from the existing host. The worst that can happen is
961 * that we maintain some extra callback state information */
962 if (host->interface) {
964 ("Host %s:%d used to support WhoAreYou, deleting.\n",
965 afs_inet_ntoa_r(host->host, hoststr), host->port));
966 host->hostFlags |= HOSTDELETED;
968 if (!held) h_Release_r(host);
972 } else if (code == 0) {
974 identP = (struct Identity *)malloc(sizeof(struct Identity));
976 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
980 identP->uuid = interf.uuid;
981 rx_SetSpecific(tcon, rxcon_ident_key, identP);
982 /* Check whether the UUID on this connection matches
983 * the UUID in the host structure. If they don't match
984 * then this is not the same host as before. */
985 if ( !host->interface
986 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid) ) {
988 ("Host %s:%d has changed its identity, deleting.\n",
989 afs_inet_ntoa_r(host->host, hoststr), host->port));
990 host->hostFlags |= HOSTDELETED;
992 if (!held) h_Release_r(host);
997 afs_inet_ntoa_r(host->host, hoststr);
998 ViceLog(0,("CB: WhoAreYou failed for %s:%d, error %d\n",
999 hoststr, ntohs(host->port), code));
1000 host->hostFlags |= VENUSDOWN;
1002 host->hostFlags |= ALTADDR;
1005 if ( ! (host->hostFlags & ALTADDR) )
1007 /* another thread is doing the initialisation */
1008 ViceLog(125, ("Host %s:%d waiting for host-init to complete\n",
1009 afs_inet_ntoa_r(host->host, hoststr), host->port));
1012 if ( !held) h_Release_r(host);
1013 ViceLog(125, ("Host %s:%d starting h_Lookup again\n",
1014 afs_inet_ntoa_r(host->host, hoststr), host->port));
1017 /* We need to check whether the identity in the host structure
1018 * matches the identity on the connection. If they don't match
1019 * then treat this a new host. */
1020 if ( !(host->Console&1)
1021 && ( ( !identP->valid && host->interface )
1022 || ( identP->valid && !host->interface )
1024 && !afs_uuid_equal(&identP->uuid, &host->interface->uuid) ) ) )
1026 char uuid1[128], uuid2[128];
1027 /* The host in the cache is not the host for this connection */
1028 host->hostFlags |= HOSTDELETED;
1030 if (!held) h_Release_r(host);
1033 afsUUID_to_string(identP->uuid, uuid1, 127);
1034 if (host->interface)
1035 afsUUID_to_string(host->interface->uuid, uuid2, 127);
1037 ("CB: new identity for host %s:%d, deleting(%x %x %s %s)\n",
1038 afs_inet_ntoa_r(host->host, hoststr), host->port,
1039 identP->valid, host->interface, identP->valid ? uuid1 :
1040 "", host->interface ? uuid2 : ""));
1044 host = h_Alloc_r(tcon); /* returned held and locked */
1045 h_gethostcps_r(host,FT_ApproxTime());
1046 if (!(host->Console&1)) {
1047 if (!identP || !interfValid) {
1049 code = RXAFSCB_WhoAreYou(host->callback_rxcon, &interf);
1051 if ( code == RXGEN_OPCODE ) {
1052 identP = (struct Identity *)malloc(sizeof(struct Identity));
1054 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1058 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1060 ("Host %s:%d does not support WhoAreYou.\n",
1061 afs_inet_ntoa_r(host->host, hoststr), host->port));
1063 } else if (code == 0) {
1065 identP = (struct Identity *)malloc(sizeof(struct Identity));
1067 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1071 identP->uuid = interf.uuid;
1072 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1073 ViceLog(25, ("WhoAreYou success on %s:%d\n",
1074 afs_inet_ntoa_r(host->host, hoststr), host->port));
1077 if (code == 0 && !identP->valid) {
1079 code = RXAFSCB_InitCallBackState(host->callback_rxcon);
1081 } else if (code == 0) {
1082 oldHost = h_LookupUuid_r(&identP->uuid);
1084 /* This is a new address for an existing host. Update
1085 * the list of interfaces for the existing host and
1086 * delete the host structure we just allocated. */
1087 if (!(held = h_Held_r(oldHost)))
1090 ViceLog(25, ("CB: new addr %s:%d for old host %s:%d\n",
1091 afs_inet_ntoa_r(host->host, hoststr), host->port,
1092 afs_inet_ntoa_r(oldHost->host, hoststr2), oldHost->port));
1093 host->hostFlags |= HOSTDELETED;
1097 addInterfaceAddr_r(host, haddr);
1099 /* This really is a new host */
1100 hashInsertUuid_r(&identP->uuid, host);
1102 code = RXAFSCB_InitCallBackState3(host->callback_rxcon,
1106 ViceLog(25, ("InitCallBackState3 success on %s:%d\n",
1107 afs_inet_ntoa_r(host->host, hoststr), host->port));
1108 assert(interfValid == 1);
1109 initInterfaceAddr_r(host, &interf);
1114 afs_inet_ntoa_r(host->host, hoststr);
1115 ViceLog(0,("CB: RCallBackConnectBack failed for %s:%d\n",
1116 hoststr, ntohs(host->port)));
1117 host->hostFlags |= VENUSDOWN;
1120 host->hostFlags |= RESETDONE;
1123 host->hostFlags |= ALTADDR;/* host structure iniatilisation complete */
1131 static char localcellname[PR_MAXNAMELEN+1];
1132 char local_realm[AFS_REALM_SZ] = "";
1135 void h_InitHostPackage()
1137 afsconf_GetLocalCell (confDir, localcellname, PR_MAXNAMELEN);
1138 if (!local_realm[0]) {
1139 if (afs_krb_get_lrealm(local_realm, 0) != 0/*KSUCCESS*/) {
1140 ViceLog(0, ("afs_krb_get_lrealm failed, using %s.\n",localcellname));
1141 strcpy (local_realm, localcellname);
1144 rxcon_ident_key = rx_KeyCreate((rx_destructor_t)free);
1145 rxcon_client_key = rx_KeyCreate((rx_destructor_t)0);
1146 #ifdef AFS_PTHREAD_ENV
1147 assert(pthread_mutex_init(&host_glock_mutex, NULL) == 0);
1148 #endif /* AFS_PTHREAD_ENV */
1151 static int MapName_r(char *aname, char *acell, afs_int32 *aval)
1156 afs_int32 anamelen, cnamelen;
1160 anamelen=strlen(aname);
1161 if (anamelen >= PR_MAXNAMELEN)
1162 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
1164 lnames.namelist_len = 1;
1165 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
1166 lids.idlist_len = 0;
1167 lids.idlist_val = NULL;
1169 cnamelen=strlen(acell);
1171 if (strcasecmp(local_realm, acell) && strcasecmp(localcellname, acell)) {
1172 ViceLog(2, ("MapName: cell is foreign. cell=%s, localcell=%s, localrealm=%s\n",
1173 acell, localcellname, local_realm));
1174 if ((anamelen+cnamelen+1) >= PR_MAXNAMELEN) {
1175 ViceLog(2, ("MapName: Name too long, using AnonymousID for %s@%s\n",
1177 *aval = AnonymousID;
1180 foreign = 1; /* attempt cross-cell authentication */
1181 tname = (char *) malloc(anamelen+cnamelen+2);
1183 ViceLog(0, ("Failed malloc in MapName_r\n"));
1186 strcpy(tname, aname);
1187 tname[anamelen] = '@';
1188 strcpy(tname+anamelen+1, acell);
1189 lnames.namelist_val = (prname *) tname;
1194 code = pr_NameToId(&lnames, &lids);
1197 if (lids.idlist_val) {
1198 *aval = lids.idlist_val[0];
1199 if (*aval == AnonymousID) {
1200 ViceLog(2, ("MapName: NameToId on %s returns anonymousID\n", lnames.namelist_val));
1202 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
1204 ViceLog(0, ("MapName: NameToId on '%s' is unknown\n", lnames.namelist_val));
1210 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
1217 /* NOTE: this returns the client with a Shared lock */
1218 struct client *h_ID2Client(afs_int32 vid)
1220 register struct client *client;
1221 register struct host *host;
1225 for (host=hostList; host; host=host->next) {
1226 if (host->hostFlags & HOSTDELETED)
1228 for (client = host->FirstClient; client; client = client->next) {
1229 if (!client->deleted && client->ViceId == vid) {
1232 ObtainSharedLock(&client->lock);
1246 * Called by the server main loop. Returns a h_Held client, which must be
1247 * released later the main loop. Allocates a client if the matching one
1248 * isn't around. The client is returned with its reference count incremented
1249 * by one. The caller must call h_ReleaseClient_r when finished with
1252 struct client *h_FindClient_r(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 = NULL;
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);
1394 ViceLog(0, ("pr_GetCPS failed(%d) for user %d, host %s:%d\n",
1396 afs_inet_ntoa_r(client->host->host, hoststr),
1397 client->host->port));
1399 /* Although ubik_Call (called by pr_GetCPS) traverses thru
1400 * all protection servers and reevaluates things if no
1401 * sync server or quorum is found we could still end up
1402 * with one of these errors. In such case we would like to
1403 * reevaluate the rpc call to find if there's cps for this
1404 * guy. We treat other errors (except network failures
1405 * ones - i.e. code < 0) as an indication that there is no
1406 * CPS for this host. Ideally we could like to deal this
1407 * problem the other way around (i.e. if code == NOCPS
1408 * ignore else retry next time) but the problem is that
1409 * there're other errors (i.e. EPERM) for which we don't
1410 * want to retry and we don't know the whole code list!
1412 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
1416 /* the disabling of system:administrators is so iffy and has so many
1417 * possible failure modes that we will disable it again */
1418 /* Turn off System:Administrator for safety
1419 if (AL_IsAMember(SystemId, client->CPS) == 0)
1420 assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
1423 /* Now, tcon may already be set to a rock, since we blocked with no host
1424 * or client locks set above in pr_GetCPS (XXXX some locking is probably
1425 * required). So, before setting the RPC's rock, we should disconnect
1426 * the RPC from the other client structure's rock.
1428 if ((oldClient = (struct client *) rx_GetSpecific(tcon, rxcon_client_key))) {
1429 oldClient->tcon = (struct rx_connection *) 0;
1430 /* rx_SetSpecific will be done immediately below */
1432 client->tcon = tcon;
1433 rx_SetSpecific(tcon, rxcon_client_key, client);
1434 ReleaseWriteLock(&client->lock);
1438 } /*h_FindClient_r*/
1440 int h_ReleaseClient_r(struct client *client)
1442 assert(client->refCount > 0);
1449 * Sigh: this one is used to get the client AGAIN within the individual
1450 * server routines. This does not bother h_Holding the host, since
1451 * this is assumed already have been done by the server main loop.
1452 * It does check tokens, since only the server routines can return the
1453 * VICETOKENDEAD error code
1455 int GetClient(struct rx_connection * tcon, struct client **cp)
1457 register struct client *client;
1461 *cp = client = (struct client *) rx_GetSpecific(tcon, rxcon_client_key);
1462 if (!(client && client->tcon && rxr_CidOf(client->tcon) == client->sid)) {
1464 ViceLog(0, ("GetClient: no client in conn %x\n", tcon));
1466 ViceLog(0, ("GetClient: tcon %x tcon sid %d client sid %d\n",
1467 client->tcon, client->tcon ? rxr_CidOf(client->tcon)
1468 : -1, client->sid));
1472 client->LastCall > client->expTime && client->expTime) {
1474 ViceLog(1, ("Token for %s at %s:%d expired %d\n",
1476 afs_inet_ntoa_r(client->host->host, hoststr),
1477 client->host->port, client->expTime));
1479 return VICETOKENDEAD;
1488 /* Client user name for short term use. Note that this is NOT inexpensive */
1489 char *h_UserName(struct client *client)
1491 static char User[PR_MAXNAMELEN+1];
1495 lids.idlist_len = 1;
1496 lids.idlist_val = (afs_int32 *)malloc(1*sizeof(afs_int32));
1497 if (!lids.idlist_val) {
1498 ViceLog(0, ("Failed malloc in h_UserName\n"));
1501 lnames.namelist_len = 0;
1502 lnames.namelist_val = (prname *)0;
1503 lids.idlist_val[0] = client->ViceId;
1504 if (pr_IdToName(&lids,&lnames)) {
1505 /* We need to free id we alloced above! */
1506 free(lids.idlist_val);
1507 return "*UNKNOWN USER NAME*";
1509 strncpy(User,lnames.namelist_val[0],PR_MAXNAMELEN);
1510 free(lids.idlist_val);
1511 free(lnames.namelist_val);
1520 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
1521 CEs, CEBlocks, HTs, HTBlocks));
1527 h_PrintClient(register struct host *host, int held, StreamHandle_t *file)
1529 register struct client *client;
1536 if (host->hostFlags & HOSTDELETED) {
1540 sprintf(tmpStr,"Host %s:%d down = %d, LastCall %s",
1541 afs_inet_ntoa_r(host->host, hoststr), host->port,
1542 (host->hostFlags & VENUSDOWN),
1543 afs_ctime((time_t *)&host->LastCall, tbuffer, sizeof(tbuffer)));
1544 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1545 for (client = host->FirstClient; client; client=client->next) {
1546 if (!client->deleted) {
1548 sprintf(tmpStr, " user id=%d, name=%s, sl=%s till %s",
1549 client->ViceId, h_UserName(client),
1550 client->authClass ? "Authenticated" : "Not authenticated",
1552 afs_ctime((time_t *)&client->expTime, tbuffer, sizeof(tbuffer))
1554 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1557 sprintf(tmpStr, " user=%s, no current server connection\n",
1558 h_UserName(client));
1559 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1561 sprintf(tmpStr, " CPS-%d is [", client->CPS.prlist_len);
1562 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1563 if (client->CPS.prlist_val) {
1564 for (i=0; i > client->CPS.prlist_len; i++) {
1565 sprintf(tmpStr, " %d", client->CPS.prlist_val[i]);
1566 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1569 sprintf(tmpStr, "]\n");
1570 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1581 * Print a list of clients, with last security level and token value seen,
1584 void h_PrintClients()
1590 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
1593 ViceLog(0, ("Couldn't create client dump file %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
1596 now = FT_ApproxTime();
1597 sprintf(tmpStr, "List of active users at %s\n",
1598 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
1599 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1600 h_Enumerate(h_PrintClient, (char *)file);
1601 STREAM_REALLYCLOSE(file);
1602 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
1609 h_DumpHost(register struct host *host, int held, StreamHandle_t *file)
1615 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 [",
1616 host->host, host->port, host->index, host->cblist,
1617 CheckLock(&host->lock), host->LastCall, host->ActiveCall,
1618 (host->hostFlags & VENUSDOWN), host->hostFlags&HOSTDELETED,
1619 host->Console, host->hostFlags & CLIENTDELETED,
1620 host->hcpsfailed, host->cpsCall);
1621 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1622 if (host->hcps.prlist_val)
1623 for (i=0; i < host->hcps.prlist_len; i++) {
1624 sprintf(tmpStr, " %d", host->hcps.prlist_val[i]);
1625 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1627 sprintf(tmpStr, "] [");
1628 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1629 if ( host->interface)
1630 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1631 sprintf(tmpStr, " %x", host->interface->addr[i]);
1632 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1634 sprintf(tmpStr, "] holds: ");
1635 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1637 for (i = 0 ; i < h_maxSlots ; i++) {
1638 sprintf(tmpStr, "%04x", host->holds[i]);
1639 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1641 sprintf(tmpStr, " slot/bit: %d/%d\n", h_holdSlot(), h_holdbit());
1642 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1653 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
1658 ViceLog(0, ("Couldn't create host dump file %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
1661 now = FT_ApproxTime();
1662 sprintf(tmpStr, "List of active hosts at %s\n",
1663 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
1664 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1665 h_Enumerate(h_DumpHost, (char *) file);
1666 STREAM_REALLYCLOSE(file);
1667 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
1673 * This counts the number of workstations, the number of active workstations,
1674 * and the number of workstations declared "down" (i.e. not heard from
1675 * recently). An active workstation has received a call since the cutoff
1676 * time argument passed.
1679 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
1682 register struct host *host;
1683 register int num=0, active=0, del=0;
1686 for (host = hostList; host; host = host->next) {
1687 if (!(host->hostFlags & HOSTDELETED)) {
1689 if (host->ActiveCall > cutofftime)
1691 if (host->hostFlags & VENUSDOWN)
1703 } /*h_GetWorkStats*/
1706 /*------------------------------------------------------------------------
1707 * PRIVATE h_ClassifyAddress
1710 * Given a target IP address and a candidate IP address (both
1711 * in host byte order), classify the candidate into one of three
1712 * buckets in relation to the target by bumping the counters passed
1716 * a_targetAddr : Target address.
1717 * a_candAddr : Candidate address.
1718 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
1719 * addresses are either in the same network
1720 * or the same subnet.
1721 * a_diffSubnetP : ...when the candidate is in a different
1723 * a_diffNetworkP : ...when the candidate is in a different
1730 * The target and candidate addresses are both in host byte
1731 * order, NOT network byte order, when passed in.
1735 *------------------------------------------------------------------------*/
1737 static void h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
1738 afs_int32 *a_sameNetOrSubnetP,
1739 afs_int32 *a_diffSubnetP,
1740 afs_int32 *a_diffNetworkP)
1741 { /*h_ClassifyAddress*/
1743 register int i; /*Iterator thru host hash table*/
1744 register struct host *hostP; /*Ptr to current host entry*/
1745 register afs_uint32 currHostAddr; /*Current host address*/
1746 afs_uint32 targetNet;
1747 afs_uint32 targetSubnet;
1749 afs_uint32 candSubnet;
1752 * Put bad values into the subnet info to start with.
1754 targetSubnet = (afs_uint32) 0;
1755 candSubnet = (afs_uint32) 0;
1758 * Pull out the network and subnetwork numbers from the target
1759 * and candidate addresses. We can short-circuit this whole
1760 * affair if the target and candidate addresses are not of the
1763 if (IN_CLASSA(a_targetAddr)) {
1764 if (!(IN_CLASSA(a_candAddr))) {
1765 (*a_diffNetworkP)++;
1768 targetNet = a_targetAddr & IN_CLASSA_NET;
1769 candNet = a_candAddr & IN_CLASSA_NET;
1770 if (IN_SUBNETA(a_targetAddr))
1771 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
1772 if (IN_SUBNETA(a_candAddr))
1773 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
1776 if (IN_CLASSB(a_targetAddr)) {
1777 if (!(IN_CLASSB(a_candAddr))) {
1778 (*a_diffNetworkP)++;
1781 targetNet = a_targetAddr & IN_CLASSB_NET;
1782 candNet = a_candAddr & IN_CLASSB_NET;
1783 if (IN_SUBNETB(a_targetAddr))
1784 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
1785 if (IN_SUBNETB(a_candAddr))
1786 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
1787 } /*Class B target*/
1789 if (IN_CLASSC(a_targetAddr)) {
1790 if (!(IN_CLASSC(a_candAddr))) {
1791 (*a_diffNetworkP)++;
1794 targetNet = a_targetAddr & IN_CLASSC_NET;
1795 candNet = a_candAddr & IN_CLASSC_NET;
1798 * Note that class C addresses can't have subnets,
1799 * so we leave the defaults untouched.
1801 } /*Class C target*/
1803 targetNet = a_targetAddr;
1804 candNet = a_candAddr;
1805 } /*Class D address*/
1808 * Now, simply compare the extracted net and subnet values for
1809 * the two addresses (which at this point are known to be of the
1812 if (targetNet == candNet) {
1813 if (targetSubnet == candSubnet)
1814 (*a_sameNetOrSubnetP)++;
1819 (*a_diffNetworkP)++;
1821 } /*h_ClassifyAddress*/
1824 /*------------------------------------------------------------------------
1825 * EXPORTED h_GetHostNetStats
1828 * Iterate through the host table, and classify each (non-deleted)
1829 * host entry into ``proximity'' categories (same net or subnet,
1830 * different subnet, different network).
1833 * a_numHostsP : Set to total number of (non-deleted) hosts.
1834 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
1835 * a_diffSubnetP : Set to # hosts on diff subnet as server.
1836 * a_diffNetworkP : Set to # hosts on diff network as server.
1842 * We only count non-deleted hosts. The storage pointed to by our
1843 * parameters is zeroed upon entry.
1847 *------------------------------------------------------------------------*/
1849 void h_GetHostNetStats(afs_int32 *a_numHostsP, afs_int32 *a_sameNetOrSubnetP,
1850 afs_int32 *a_diffSubnetP, afs_int32 *a_diffNetworkP)
1851 { /*h_GetHostNetStats*/
1853 register struct host *hostP; /*Ptr to current host entry*/
1854 register afs_uint32 currAddr_HBO; /*Curr host addr, host byte order*/
1857 * Clear out the storage pointed to by our parameters.
1859 *a_numHostsP = (afs_int32) 0;
1860 *a_sameNetOrSubnetP = (afs_int32) 0;
1861 *a_diffSubnetP = (afs_int32) 0;
1862 *a_diffNetworkP = (afs_int32) 0;
1865 for (hostP = hostList; hostP; hostP = hostP->next) {
1866 if (!(hostP->hostFlags & HOSTDELETED)) {
1868 * Bump the number of undeleted host entries found.
1869 * In classifying the current entry's address, make
1870 * sure to first convert to host byte order.
1873 currAddr_HBO = (afs_uint32)ntohl(hostP->host);
1874 h_ClassifyAddress(FS_HostAddr_HBO,
1879 } /*Only look at non-deleted hosts*/
1880 } /*For each host record hashed to this index*/
1883 } /*h_GetHostNetStats*/
1885 static afs_uint32 checktime;
1886 static afs_uint32 clientdeletetime;
1887 static struct AFSFid zerofid;
1891 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
1892 * Since it can serialize them, and pile up, it should be a separate LWP
1893 * from other events.
1895 int CheckHost(register struct host *host, int held)
1897 register struct client *client;
1900 /* Host is held by h_Enumerate */
1902 for (client = host->FirstClient; client; client = client->next) {
1903 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
1904 client->deleted = 1;
1905 host->hostFlags |= CLIENTDELETED;
1908 if (host->LastCall < checktime) {
1910 if (!(host->hostFlags & HOSTDELETED)) {
1911 if (host->LastCall < clientdeletetime) {
1912 host->hostFlags |= HOSTDELETED;
1913 if (!(host->hostFlags & VENUSDOWN)) {
1914 host->hostFlags &= ~ALTADDR; /* alternate address invalid*/
1915 if (host->interface) {
1917 code = RXAFSCB_InitCallBackState3(host->callback_rxcon,
1922 code = RXAFSCB_InitCallBackState(host->callback_rxcon);
1925 host->hostFlags |= ALTADDR; /* alternate addresses valid */
1929 afs_inet_ntoa_r(host->host, hoststr);
1931 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
1932 hoststr, ntohs(host->port)));
1933 host->hostFlags |= VENUSDOWN;
1935 /* Note: it's safe to delete hosts even if they have call
1936 * back state, because break delayed callbacks (called when a
1937 * message is received from the workstation) will always send a
1938 * break all call backs to the workstation if there is no
1944 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
1945 if (host->interface) {
1946 afsUUID uuid = host->interface->uuid;
1948 code = RXAFSCB_ProbeUuid(host->callback_rxcon, &uuid);
1951 if ( MultiProbeAlternateAddress_r(host) ) {
1953 afs_inet_ntoa_r(host->host, hoststr);
1955 ("ProbeUuid failed for host %s:%d\n",
1956 hoststr, ntohs(host->port)));
1957 host->hostFlags |= VENUSDOWN;
1962 code = RXAFSCB_Probe(host->callback_rxcon);
1966 afs_inet_ntoa_r(host->host, hoststr);
1967 ViceLog(0, ("ProbeUuid failed for host %s:%d\n",
1968 hoststr, ntohs(host->port)));
1969 host->hostFlags |= VENUSDOWN;
1984 * Set VenusDown for any hosts that have not had a call in 15 minutes and
1985 * don't respond to a probe. Note that VenusDown can only be cleared if
1986 * a message is received from the host (see ServerLWP in file.c).
1987 * Delete hosts that have not had any calls in 1 hour, clients that
1988 * have not had any calls in 15 minutes.
1990 * This routine is called roughly every 5 minutes.
1992 void h_CheckHosts() {
1993 afs_uint32 now = FT_ApproxTime();
1995 memset((char *)&zerofid, 0, sizeof(zerofid));
1997 * Send a probe to the workstation if it hasn't been heard from in
2000 checktime = now - 15*60;
2001 clientdeletetime = now - 120*60; /* 2 hours ago */
2002 h_Enumerate(CheckHost, NULL);
2007 * This is called with host locked and held. At this point, the
2008 * hostHashTable should not be having entries for the alternate
2009 * interfaces. This function has to insert these entries in the
2012 * The addresses in the ineterfaceAddr list are in host byte order.
2015 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
2019 afs_int32 myPort, myHost;
2021 struct Interface *interface;
2026 ViceLog(125,("initInterfaceAddr : host %x numAddr %d\n",
2027 host->host, interf->numberOfInterfaces));
2029 number = interf->numberOfInterfaces;
2030 myPort = host->port;
2031 myHost = host->host; /* current interface address */
2033 /* validation checks */
2034 if ( number < 0 || number > AFS_MAX_INTERFACE_ADDR )
2036 ViceLog(0,("Number of alternate addresses returned is %d\n",
2042 * Convert IP addresses to network byte order, and remove for
2043 * duplicate IP addresses from the interface list.
2045 for (i = 0, count = 0, found = 0; i < number; i++)
2047 interf->addr_in[i] = htonl(interf->addr_in[i]);
2048 for (j = 0 ; j < count ; j++) {
2049 if (interf->addr_in[j] == interf->addr_in[i])
2053 interf->addr_in[count] = interf->addr_in[i];
2054 if (interf->addr_in[count] == myHost)
2061 * Allocate and initialize an interface structure for this host.
2064 interface = (struct Interface *)
2065 malloc(sizeof(struct Interface) +
2066 (sizeof(afs_int32) * (count-1)));
2068 ViceLog(0, ("Failed malloc in initInterfaceAddr_r\n"));
2071 interface->numberOfInterfaces = count;
2073 interface = (struct Interface *)
2074 malloc(sizeof(struct Interface) +
2075 (sizeof(afs_int32) * count));
2077 interface->numberOfInterfaces = count + 1;
2078 interface->addr[count] = myHost;
2080 interface->uuid = interf->uuid;
2081 for (i = 0 ; i < count ; i++)
2082 interface->addr[i] = interf->addr_in[i];
2084 assert(!host->interface);
2085 host->interface = interface;
2087 for ( i=0; i < host->interface->numberOfInterfaces; i++)
2089 ViceLog(125,("--- alt address %x\n", host->interface->addr[i]));
2095 /* inserts a new HashChain structure corresponding to this address */
2096 void hashInsert_r(afs_int32 addr, struct host* host)
2099 struct h_hashChain* chain;
2101 /* hash into proper bucket */
2102 index = h_HashIndex(addr);
2104 /* insert into beginning of list for this bucket */
2105 chain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
2107 ViceLog(0, ("Failed malloc in hashInsert_r\n"));
2110 chain->hostPtr = host;
2111 chain->next = hostHashTable[index];
2113 hostHashTable[index] = chain;
2118 * This is called with host locked and held. At this point, the
2119 * hostHashTable should not be having entries for the alternate
2120 * interfaces. This function has to insert these entries in the
2123 * All addresses are in network byte order.
2126 addInterfaceAddr_r(struct host *host, afs_int32 addr)
2131 struct Interface *interface;
2134 assert(host->interface);
2136 ViceLog(125,("addInterfaceAddr : host %x addr %d\n",
2140 * Make sure this address is on the list of known addresses
2143 number = host->interface->numberOfInterfaces;
2144 for ( i=0, found=0; i < number && !found; i++)
2146 if ( host->interface->addr[i] == addr)
2150 interface = (struct Interface *)
2151 malloc(sizeof(struct Interface) +
2152 (sizeof(afs_int32) * number));
2154 ViceLog(0, ("Failed malloc in addInterfaceAddr_r\n"));
2157 interface->numberOfInterfaces = number + 1;
2158 interface->uuid = host->interface->uuid;
2159 for (i = 0 ; i < number ; i++)
2160 interface->addr[i] = host->interface->addr[i];
2161 interface->addr[number] = addr;
2162 free(host->interface);
2163 host->interface = interface;
2167 * Create a hash table entry for this address
2169 hashInsert_r(addr, host);
2174 /* deleted a HashChain structure for this address and host */
2175 /* returns 1 on success */
2177 hashDelete_r(afs_int32 addr, struct host* host)
2181 register struct h_hashChain **hp, *th;
2183 for (hp = &hostHashTable[h_HashIndex(addr)]; (th = *hp); )
2185 assert(th->hostPtr);
2186 if (th->hostPtr == host && th->addr == addr)
2201 ** prints out all alternate interface address for the host. The 'level'
2202 ** parameter indicates what level of debugging sets this output
2205 printInterfaceAddr(struct host *host, int level)
2208 if ( host-> interface )
2210 /* check alternate addresses */
2211 number = host->interface->numberOfInterfaces;
2212 assert( number > 0 );
2213 for ( i=0; i < number; i++)
2214 ViceLog(level, ("%x ", host->interface->addr[i]));
2216 ViceLog(level, ("\n"));