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 */
420 /* Assumptions: called with held host */
422 h_gethostcps_r(register struct host *host, register afs_int32 now)
427 /* wait if somebody else is already doing the getCPS call */
428 while ( host->hostFlags & HCPS_INPROGRESS )
430 slept = 1; /* I did sleep */
431 host->hostFlags |= HCPS_WAITING; /* I am sleeping now */
432 #ifdef AFS_PTHREAD_ENV
433 pthread_cond_wait(&host->cond, &host_glock_mutex);
434 #else /* AFS_PTHREAD_ENV */
435 if (( code = LWP_WaitProcess( &(host->hostFlags ))) != LWP_SUCCESS)
436 ViceLog(0, ("LWP_WaitProcess returned %d\n", code));
437 #endif /* AFS_PTHREAD_ENV */
441 host->hostFlags |= HCPS_INPROGRESS; /* mark as CPSCall in progress */
442 if (host->hcps.prlist_val)
443 free(host->hcps.prlist_val); /* this is for hostaclRefresh */
444 host->hcps.prlist_val = NULL;
445 host->hcps.prlist_len = 0;
446 slept? (host->cpsCall = FT_ApproxTime()): (host->cpsCall = now );
449 code = pr_GetHostCPS(htonl(host->host), &host->hcps);
453 * Although ubik_Call (called by pr_GetHostCPS) traverses thru all protection servers
454 * and reevaluates things if no sync server or quorum is found we could still end up
455 * with one of these errors. In such case we would like to reevaluate the rpc call to
456 * find if there's cps for this guy. We treat other errors (except network failures
457 * ones - i.e. code < 0) as an indication that there is no CPS for this host. Ideally
458 * we could like to deal this problem the other way around (i.e. if code == NOCPS
459 * ignore else retry next time) but the problem is that there're other errors (i.e.
460 * EPERM) for which we don't want to retry and we don't know the whole code list!
462 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC) {
464 * We would have preferred to use a while loop and try again since ops in protected
465 * acls for this host will fail now but they'll be reevaluated on any subsequent
466 * call. The attempt to wait for a quorum/sync site or network error won't work
467 * since this problems really should only occurs during a complete fileserver
468 * restart. Since the fileserver will start before the ptservers (and thus before
469 * quorums are complete) clients will be utilizing all the fileserver's lwps!!
471 host->hcpsfailed = 1;
472 ViceLog(0, ("Warning: GetHostCPS failed (%d) for %x; will retry\n", code, host->host));
474 host->hcpsfailed = 0;
475 ViceLog(1, ("gethost: GetHostCPS failed (%d) for %x; ignored\n", code, host->host));
477 if (host->hcps.prlist_val)
478 free(host->hcps.prlist_val);
479 host->hcps.prlist_val = NULL;
480 host->hcps.prlist_len = 0; /* Make sure it's zero */
482 host->hcpsfailed = 0;
484 host->hostFlags &= ~HCPS_INPROGRESS;
485 /* signal all who are waiting */
486 if ( host->hostFlags & HCPS_WAITING) /* somebody is waiting */
488 host->hostFlags &= ~HCPS_WAITING;
489 #ifdef AFS_PTHREAD_ENV
490 assert(pthread_cond_broadcast(&host->cond) == 0);
491 #else /* AFS_PTHREAD_ENV */
492 if ( (code = LWP_NoYieldSignal( &(host->hostFlags) )) != LWP_SUCCESS )
493 ViceLog(0, ("LWP_NoYieldSignal returns %d\n", code));
494 #endif /* AFS_PTHREAD_ENV */
498 /* args in net byte order */
499 void h_flushhostcps(register afs_uint32 hostaddr, register afs_uint32 hport)
501 register struct host *host;
505 host = h_Lookup_r(hostaddr, hport, &held);
507 host->hcpsfailed = 1;
518 * Allocate a host. It will be identified by the peer (ip,port) info in the
519 * rx connection provided. The host is returned held and locked
521 #define DEF_ROPCONS 2115
523 struct host *h_Alloc_r(register struct rx_connection *r_con)
526 struct servent *serverentry;
527 register index = h_HashIndex(rxr_HostOf(r_con));
528 register struct host *host;
529 static struct rx_securityClass *sc = 0;
531 struct h_hashChain* h_hashChain;
532 #if FS_STATS_DETAILED
533 afs_uint32 newHostAddr_HBO; /*New host IP addr, in host byte order*/
534 #endif /* FS_STATS_DETAILED */
538 h_hashChain = (struct h_hashChain*) malloc(sizeof(struct h_hashChain));
540 ViceLog(0, ("Failed malloc in h_Alloc_r\n"));
543 h_hashChain->hostPtr = host;
544 h_hashChain->addr = rxr_HostOf(r_con);
545 h_hashChain->next = hostHashTable[index];
546 hostHashTable[index] = h_hashChain;
548 host->host = rxr_HostOf(r_con);
549 host->port = rxr_PortOf(r_con);
550 if(consolePort == 0 ) { /* find the portal number for console */
551 #if defined(AFS_OSF_ENV)
552 serverentry = getservbyname("ropcons", "");
554 serverentry = getservbyname("ropcons", 0);
557 consolePort = serverentry->s_port;
559 consolePort = htons(DEF_ROPCONS); /* Use a default */
561 if (host->port == consolePort) host->Console = 1;
562 /* Make a callback channel even for the console, on the off chance that it
563 makes a request that causes a break call back. It shouldn't. */
566 sc = rxnull_NewClientSecurityObject();
567 host->callback_rxcon = rx_NewConnection (host->host, host->port,
569 rx_SetConnDeadTime(host->callback_rxcon, 50);
570 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
572 now = host->LastCall = host->cpsCall = host->ActiveCall = FT_ApproxTime();
574 host->hcps.prlist_val = NULL;
575 host->hcps.prlist_len = 0;
578 host->hcpsfailed = 0; /* save cycles */
579 h_gethostcps(host); /* do this under host hold/lock */
581 host->FirstClient = 0;
584 h_InsertList_r(host); /* update global host List */
585 #if FS_STATS_DETAILED
587 * Compare the new host's IP address (in host byte order) with ours
588 * (the File Server's), remembering if they are in the same network.
590 newHostAddr_HBO = (afs_uint32)ntohl(host->host);
591 host->InSameNetwork = h_AddrInSameNetwork(FS_HostAddr_HBO,
593 #endif /* FS_STATS_DETAILED */
599 /* Lookup a host given an IP address and UDP port number. */
600 /* hostaddr and hport are in network order */
601 /* Note: host should be released by caller if 0 == *heldp and non-null */
602 /* hostaddr and hport are in network order */
603 struct host *h_Lookup_r(afs_uint32 hostaddr, afs_uint32 hport, int *heldp)
605 register afs_int32 now;
606 register struct host *host=0;
607 register struct h_hashChain* chain;
608 register index = h_HashIndex(hostaddr);
609 extern int hostaclRefresh;
612 for (chain=hostHashTable[index]; chain; chain=chain->next) {
613 host = chain->hostPtr;
615 if (!(host->hostFlags & HOSTDELETED) && chain->addr == hostaddr
616 && host->port == hport) {
617 *heldp = h_Held_r(host);
621 if (host->hostFlags & HOSTDELETED) {
628 now = FT_ApproxTime(); /* always evaluate "now" */
629 if (host->hcpsfailed || (host->cpsCall+hostaclRefresh < now )) {
631 * Every hostaclRefresh period (def 2 hrs) get the new
632 * membership list for the host. Note this could be the
633 * first time that the host is added to a group. Also
634 * here we also retry on previous legitimate hcps failures.
636 * If we get here we still have a host hold.
638 h_gethostcps_r(host,now);
648 /* Lookup a host given its UUID. */
649 struct host *h_LookupUuid_r(afsUUID *uuidp)
651 register struct host *host=0;
652 register struct h_hashChain* chain;
653 register index = h_UuidHashIndex(uuidp);
655 for (chain=hostUuidHashTable[index]; chain; chain=chain->next) {
656 host = chain->hostPtr;
658 if (!(host->hostFlags & HOSTDELETED) && host->interface
659 && afs_uuid_equal(&host->interface->uuid, uuidp)) {
670 * h_Hold_r: Establish a hold by the current LWP on this host--the host
671 * or its clients will not be physically deleted until all holds have
673 * NOTE: h_Hold_r is a macro defined in host.h.
676 /* h_TossStuff_r: Toss anything in the host structure (the host or
677 * clients marked for deletion. Called from h_Release_r ONLY.
678 * To be called, there must be no holds, and either host->deleted
679 * or host->clientDeleted must be set.
681 int h_TossStuff_r(register struct host *host)
683 register struct client **cp, *client;
686 /* if somebody still has this host held */
687 for (i=0; (i<h_maxSlots)&&(!(host)->holds[i]); i++);
691 /* if somebody still has this host locked */
692 if (h_NBLock_r(host) != 0) {
694 ViceLog(0, ("Warning: h_TossStuff_r failed; Host %s:%d was locked.\n",
695 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
701 /* ASSUMPTION: rxi_FreeConnection() does not yield */
702 for (cp = &host->FirstClient; (client = *cp); ) {
703 if ((host->hostFlags & HOSTDELETED) || client->deleted) {
704 if (client->refCount) {
706 ViceLog(0, ("Warning: Host %s:%d client %x refcount %d while deleting.\n",
707 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
708 client, client->refCount));
710 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val) {
711 free(client->CPS.prlist_val);
712 client->CPS.prlist_val = NULL;
714 client->CPS.prlist_len = 0;
716 rx_SetSpecific(client->tcon, rxcon_client_key, (void *)0);
718 CurrentConnections--;
721 } else cp = &client->next;
724 /* We've just cleaned out all the deleted clients; clear the flag */
725 host->hostFlags &= ~CLIENTDELETED;
727 if (host->hostFlags & HOSTDELETED) {
728 register struct h_hashChain **hp, *th;
729 register struct rx_connection *rxconn;
734 if (host->Console & 1) Console--;
735 if ((rxconn = host->callback_rxcon)) {
736 host->callback_rxcon = (struct rx_connection *)0;
738 * If rx_DestroyConnection calls h_FreeConnection we will
739 * deadlock on the host_glock_mutex. Work around the problem
740 * by unhooking the client from the connection before
741 * destroying the connection.
743 client = rx_GetSpecific(rxconn, rxcon_client_key);
744 if (client && client->tcon == rxconn)
746 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
747 rx_DestroyConnection(rxconn);
749 if (host->hcps.prlist_val)
750 free(host->hcps.prlist_val);
751 host->hcps.prlist_val = NULL;
752 host->hcps.prlist_len = 0;
753 DeleteAllCallBacks_r(host, 1);
754 host->hostFlags &= ~RESETDONE; /* just to be safe */
756 /* if alternate addresses do not exist */
757 if ( !(host->interface) )
759 for (hp = &hostHashTable[h_HashIndex(host->host)];
760 (th = *hp); hp = &th->next)
763 if (th->hostPtr == host)
766 h_DeleteList_r(host);
774 /* delete all hash entries for the UUID */
775 uuidp = &host->interface->uuid;
776 for (hp = &hostUuidHashTable[h_UuidHashIndex(uuidp)];
777 (th = *hp); hp = &th->next) {
779 if (th->hostPtr == host)
786 /* delete all hash entries for alternate addresses */
787 assert(host->interface->numberOfInterfaces > 0 );
788 for ( i=0; i < host->interface->numberOfInterfaces; i++)
790 hostAddr = host->interface->addr[i];
791 for (hp = &hostHashTable[h_HashIndex(hostAddr)];
792 (th = *hp); hp = &th->next)
795 if (th->hostPtr == host)
803 free(host->interface);
804 host->interface = NULL;
805 h_DeleteList_r(host); /* remove host from global host List */
807 } /* if alternate address exists */
812 /* Called by rx when a server connection disappears */
813 int h_FreeConnection(struct rx_connection *tcon)
815 register struct client *client;
817 client = (struct client *) rx_GetSpecific(tcon, rxcon_client_key);
820 if (client->tcon == tcon)
821 client->tcon = (struct rx_connection *)0;
824 } /*h_FreeConnection*/
827 /* h_Enumerate: Calls (*proc)(host, held, param) for at least each host in the
828 * system at the start of the enumeration (perhaps more). Hosts may be deleted
829 * (have delete flag set); ditto for clients. (*proc) is always called with
830 * host h_held(). The hold state of the host with respect to this lwp is passed
831 * to (*proc) as the param held. The proc should return 0 if the host should be
832 * released, 1 if it should be held after enumeration.
834 void h_Enumerate(int (*proc)(), char *param)
836 register struct host *host, **list;
838 register int i, count;
841 if (hostCount == 0) {
845 list = (struct host **)malloc(hostCount * sizeof(struct host *));
847 ViceLog(0, ("Failed malloc in h_Enumerate\n"));
850 held = (int *)malloc(hostCount * sizeof(int));
852 ViceLog(0, ("Failed malloc in h_Enumerate\n"));
855 for (count = 0, host = hostList ; host ; host = host->next, count++) {
857 if (!(held[count] = h_Held_r(host)))
860 assert(count == hostCount);
862 for ( i = 0 ; i < count ; i++) {
863 held[i] = (*proc)(list[i], held[i], param);
865 h_Release(list[i]);/* this might free up the host */
871 /* h_Enumerate_r (revised):
872 * Calls (*proc)(host, held, param) for each host in hostList, starting
874 * Hosts may be deleted (have delete flag set); ditto for clients.
875 * (*proc) is always called with
876 * host h_held() and the global host lock (H_LOCK) locked.The hold state of the
877 * host with respect to this lwp is passed to (*proc) as the param held.
878 * The proc should return 0 if the host should be released, 1 if it should
879 * be held after enumeration.
881 void h_Enumerate_r(int (*proc)(), struct host* enumstart, char *param)
883 register struct host *host;
886 if (hostCount == 0) {
889 for (host = enumstart ; host ; host = host->next) {
890 if (!(held = h_Held_r(host)))
892 held = (*proc)(host, held, param);
894 h_Release_r(host);/* this might free up the host */
898 /* inserts a new HashChain structure corresponding to this UUID */
899 void hashInsertUuid_r(struct afsUUID *uuid, struct host* host)
902 struct h_hashChain* chain;
904 /* hash into proper bucket */
905 index = h_UuidHashIndex(uuid);
907 /* insert into beginning of list for this bucket */
908 chain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
910 ViceLog(0, ("Failed malloc in hashInsertUuid_r\n"));
914 chain->hostPtr = host;
915 chain->next = hostUuidHashTable[index];
916 hostUuidHashTable[index] = chain;
919 /* Host is returned held */
920 struct host *h_GetHost_r(struct rx_connection *tcon)
923 struct host *oldHost;
926 struct interfaceAddr interf;
928 struct Identity *identP = NULL;
932 char hoststr[16], hoststr2[16];
935 caps.Capabilities_val = NULL;
937 haddr = rxr_HostOf(tcon);
938 hport = rxr_PortOf(tcon);
940 if (caps.Capabilities_val)
941 free(caps.Capabilities_val);
942 caps.Capabilities_val = NULL;
943 caps.Capabilities_len = 0;
946 host = h_Lookup_r(haddr, hport, &held);
947 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
948 if (host && !identP && !(host->Console&1)) {
949 /* This is a new connection, and we already have a host
950 * structure for this address. Verify that the identity
951 * of the caller matches the identity in the host structure.
954 if ( !(host->hostFlags & ALTADDR) )
956 /* Another thread is doing initialization */
958 if ( !held) h_Release_r(host);
959 ViceLog(125, ("Host %s:%d starting h_Lookup again\n",
960 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
963 host->hostFlags &= ~ALTADDR;
965 code = RXAFSCB_TellMeAboutYourself(host->callback_rxcon, &interf,
967 if ( code == RXGEN_OPCODE )
968 code = RXAFSCB_WhoAreYou(host->callback_rxcon, &interf);
970 if ( code == RXGEN_OPCODE ) {
971 identP = (struct Identity *)malloc(sizeof(struct Identity));
973 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
977 rx_SetSpecific(tcon, rxcon_ident_key, identP);
978 /* The host on this connection was unable to respond to
979 * the WhoAreYou. We will treat this as a new connection
980 * from the existing host. The worst that can happen is
981 * that we maintain some extra callback state information */
982 if (host->interface) {
984 ("Host %s:%d used to support WhoAreYou, deleting.\n",
985 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
986 host->hostFlags |= HOSTDELETED;
988 if (!held) h_Release_r(host);
992 } else if (code == 0) {
994 identP = (struct Identity *)malloc(sizeof(struct Identity));
996 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1000 identP->uuid = interf.uuid;
1001 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1002 /* Check whether the UUID on this connection matches
1003 * the UUID in the host structure. If they don't match
1004 * then this is not the same host as before. */
1005 if ( !host->interface
1006 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid) ) {
1008 ("Host %s:%d has changed its identity, deleting.\n",
1009 afs_inet_ntoa_r(host->host, hoststr), host->port));
1010 host->hostFlags |= HOSTDELETED;
1012 if (!held) h_Release_r(host);
1017 afs_inet_ntoa_r(host->host, hoststr);
1018 ViceLog(0,("CB: WhoAreYou failed for %s:%d, error %d\n",
1019 hoststr, ntohs(host->port), code));
1020 host->hostFlags |= VENUSDOWN;
1022 if (caps.Capabilities_val &&
1023 (caps.Capabilities_val[0] & CAPABILITY_ERRORTRANS))
1024 host->hostFlags |= HERRORTRANS;
1026 host->hostFlags &= ~(HERRORTRANS);
1027 host->hostFlags |= ALTADDR;
1030 if ( ! (host->hostFlags & ALTADDR) )
1032 /* another thread is doing the initialisation */
1033 ViceLog(125, ("Host %s:%d waiting for host-init to complete\n",
1034 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1037 if ( !held) h_Release_r(host);
1038 ViceLog(125, ("Host %s:%d starting h_Lookup again\n",
1039 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1042 /* We need to check whether the identity in the host structure
1043 * matches the identity on the connection. If they don't match
1044 * then treat this a new host. */
1045 if ( !(host->Console&1)
1046 && ( ( !identP->valid && host->interface )
1047 || ( identP->valid && !host->interface )
1049 && !afs_uuid_equal(&identP->uuid, &host->interface->uuid) ) ) )
1051 char uuid1[128], uuid2[128];
1053 afsUUID_to_string(identP->uuid, uuid1, 127);
1054 if (host->interface)
1055 afsUUID_to_string(host->interface->uuid, uuid2, 127);
1057 ("CB: new identity for host %s:%d, deleting(%x %x %s %s)\n",
1058 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1059 identP->valid, host->interface, identP->valid ? uuid1 :
1060 "", host->interface ? uuid2 : ""));
1062 /* The host in the cache is not the host for this connection */
1063 host->hostFlags |= HOSTDELETED;
1065 if (!held) h_Release_r(host);
1069 host = h_Alloc_r(tcon); /* returned held and locked */
1070 h_gethostcps_r(host,FT_ApproxTime());
1071 if (!(host->Console&1)) {
1074 code = RXAFSCB_TellMeAboutYourself(host->callback_rxcon,
1076 if ( code == RXGEN_OPCODE )
1077 code = RXAFSCB_WhoAreYou(host->callback_rxcon, &interf);
1079 if ( code == RXGEN_OPCODE ) {
1081 identP = (struct Identity *)malloc(sizeof(struct Identity));
1086 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1091 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1093 ("Host %s:%d does not support WhoAreYou.\n",
1094 afs_inet_ntoa_r(host->host, hoststr),
1095 ntohs(host->port)));
1097 } else if (code == 0) {
1099 identP = (struct Identity *)malloc(sizeof(struct Identity));
1104 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1108 identP->uuid = interf.uuid;
1110 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1111 ViceLog(25, ("WhoAreYou success on %s:%d\n",
1112 afs_inet_ntoa_r(host->host, hoststr),
1113 ntohs(host->port)));
1115 interfValid=identP->valid;
1116 if (code == 0 && !identP->valid) {
1118 code = RXAFSCB_InitCallBackState(host->callback_rxcon);
1120 } else if (code == 0) {
1121 oldHost = h_LookupUuid_r(&identP->uuid);
1123 /* This is a new address for an existing host. Update
1124 * the list of interfaces for the existing host and
1125 * delete the host structure we just allocated. */
1126 if (!(held = h_Held_r(oldHost)))
1129 ViceLog(25, ("CB: new addr %s:%d for old host %s:%d\n",
1130 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1131 afs_inet_ntoa_r(oldHost->host, hoststr2), ntohs(oldHost->port)));
1132 host->hostFlags |= HOSTDELETED;
1136 addInterfaceAddr_r(host, haddr);
1138 /* This really is a new host */
1139 hashInsertUuid_r(&identP->uuid, host);
1141 code = RXAFSCB_InitCallBackState3(host->callback_rxcon,
1145 ViceLog(25, ("InitCallBackState3 success on %s:%d\n",
1146 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1147 assert(interfValid == 1);
1148 initInterfaceAddr_r(host, &interf);
1153 afs_inet_ntoa_r(host->host, hoststr);
1154 ViceLog(0,("CB: RCallBackConnectBack failed for %s:%d\n",
1155 hoststr, ntohs(host->port)));
1156 host->hostFlags |= VENUSDOWN;
1159 host->hostFlags |= RESETDONE;
1162 if (caps.Capabilities_val &&
1163 (caps.Capabilities_val[0] & CAPABILITY_ERRORTRANS))
1164 host->hostFlags |= HERRORTRANS;
1166 host->hostFlags &= ~(HERRORTRANS);
1167 host->hostFlags |= ALTADDR;/* host structure iniatilisation complete */
1170 if (caps.Capabilities_val)
1171 free(caps.Capabilities_val);
1172 caps.Capabilities_val = NULL;
1173 caps.Capabilities_len = 0;
1179 static char localcellname[PR_MAXNAMELEN+1];
1180 char local_realm[AFS_REALM_SZ] = "";
1183 void h_InitHostPackage()
1185 afsconf_GetLocalCell (confDir, localcellname, PR_MAXNAMELEN);
1186 if (!local_realm[0]) {
1187 if (afs_krb_get_lrealm(local_realm, 0) != 0/*KSUCCESS*/) {
1188 ViceLog(0, ("afs_krb_get_lrealm failed, using %s.\n",localcellname));
1189 strcpy (local_realm, localcellname);
1192 rxcon_ident_key = rx_KeyCreate((rx_destructor_t)free);
1193 rxcon_client_key = rx_KeyCreate((rx_destructor_t)0);
1194 #ifdef AFS_PTHREAD_ENV
1195 assert(pthread_mutex_init(&host_glock_mutex, NULL) == 0);
1196 #endif /* AFS_PTHREAD_ENV */
1199 static int MapName_r(char *aname, char *acell, afs_int32 *aval)
1204 afs_int32 anamelen, cnamelen;
1208 anamelen=strlen(aname);
1209 if (anamelen >= PR_MAXNAMELEN)
1210 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
1212 lnames.namelist_len = 1;
1213 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
1214 lids.idlist_len = 0;
1215 lids.idlist_val = NULL;
1217 cnamelen=strlen(acell);
1219 if (strcasecmp(local_realm, acell) && strcasecmp(localcellname, acell)) {
1220 ViceLog(2, ("MapName: cell is foreign. cell=%s, localcell=%s, localrealm=%s\n",
1221 acell, localcellname, local_realm));
1222 if ((anamelen+cnamelen+1) >= PR_MAXNAMELEN) {
1223 ViceLog(2, ("MapName: Name too long, using AnonymousID for %s@%s\n",
1225 *aval = AnonymousID;
1228 foreign = 1; /* attempt cross-cell authentication */
1229 tname = (char *) malloc(anamelen+cnamelen+2);
1231 ViceLog(0, ("Failed malloc in MapName_r\n"));
1234 strcpy(tname, aname);
1235 tname[anamelen] = '@';
1236 strcpy(tname+anamelen+1, acell);
1237 lnames.namelist_val = (prname *) tname;
1242 code = pr_NameToId(&lnames, &lids);
1245 if (lids.idlist_val) {
1246 *aval = lids.idlist_val[0];
1247 if (*aval == AnonymousID) {
1248 ViceLog(2, ("MapName: NameToId on %s returns anonymousID\n", lnames.namelist_val));
1250 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
1252 ViceLog(0, ("MapName: NameToId on '%s' is unknown\n", lnames.namelist_val));
1258 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
1265 /* NOTE: this returns the client with a Shared lock */
1266 struct client *h_ID2Client(afs_int32 vid)
1268 register struct client *client;
1269 register struct host *host;
1273 for (host=hostList; host; host=host->next) {
1274 if (host->hostFlags & HOSTDELETED)
1276 for (client = host->FirstClient; client; client = client->next) {
1277 if (!client->deleted && client->ViceId == vid) {
1280 ObtainSharedLock(&client->lock);
1294 * Called by the server main loop. Returns a h_Held client, which must be
1295 * released later the main loop. Allocates a client if the matching one
1296 * isn't around. The client is returned with its reference count incremented
1297 * by one. The caller must call h_ReleaseClient_r when finished with
1300 struct client *h_FindClient_r(struct rx_connection *tcon)
1302 register struct client *client;
1303 register struct host *host;
1304 struct client *oldClient;
1309 #if (64-MAXKTCNAMELEN)
1310 ticket name length != 64
1314 char uname[PR_MAXNAMELEN];
1315 char tcell[MAXKTCREALMLEN];
1318 client = (struct client *) rx_GetSpecific(tcon, rxcon_client_key);
1319 if (client && !client->deleted) {
1321 h_Hold_r(client->host);
1322 if (client->prfail != 2) { /* Could add shared lock on client here */
1323 /* note that we don't have to lock entry in this path to
1324 * ensure CPS is initialized, since we don't call rx_SetSpecific
1325 * until initialization is done, and we only get here if
1326 * rx_GetSpecific located the client structure.
1331 ObtainWriteLock(&client->lock); /* released at end */
1333 } else if (client) {
1337 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
1338 ViceLog(5,("FindClient: authenticating connection: authClass=%d\n",
1340 if (authClass == 1) {
1341 /* A bcrypt tickets, no longer supported */
1342 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
1343 viceid = AnonymousID;
1344 expTime = 0x7fffffff;
1345 } else if (authClass == 2) {
1348 /* kerberos ticket */
1349 code = rxkad_GetServerInfo (tcon, /*level*/0, &expTime,
1350 tname, tinst, tcell, &kvno);
1352 ViceLog(1, ("Failed to get rxkad ticket info\n"));
1353 viceid = AnonymousID;
1354 expTime = 0x7fffffff;
1356 int ilen = strlen(tinst);
1358 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
1359 tname, tinst, tcell, expTime, kvno));
1360 strncpy (uname, tname, sizeof(uname));
1362 if (strlen(uname) + 1 + ilen >= sizeof(uname))
1364 strcat (uname, ".");
1365 strcat (uname, tinst);
1367 /* translate the name to a vice id */
1368 code = MapName_r(uname, tcell, &viceid);
1371 ViceLog(1, ("failed to map name=%s, cell=%s -> code=%d\n",
1372 uname, tcell, code));
1374 viceid = AnonymousID;
1375 expTime = 0x7fffffff;
1379 viceid = AnonymousID; /* unknown security class */
1380 expTime = 0x7fffffff;
1384 host = h_GetHost_r(tcon); /* Returns it h_Held */
1386 /* First try to find the client structure */
1387 for (client = host->FirstClient; client; client = client->next) {
1388 if (!client->deleted && (client->sid == rxr_CidOf(tcon)) &&
1389 (client->VenusEpoch == rxr_GetEpoch(tcon))) {
1390 if (client->tcon && (client->tcon != tcon)) {
1391 ViceLog(0, ("*** Vid=%d, sid=%x, tcon=%x, Tcon=%x ***\n",
1392 client->ViceId, client->sid, client->tcon, tcon));
1393 oldClient = (struct client *) rx_GetSpecific(client->tcon,
1396 if (oldClient == client)
1397 rx_SetSpecific(client->tcon, rxcon_client_key, NULL);
1400 ("Client-conn mismatch: CL1=%x, CN=%x, CL2=%x\n",
1401 client, client->tcon, oldClient));
1403 client->tcon = (struct rx_connection *)0;
1407 ObtainWriteLock(&client->lock);
1413 /* Still no client structure - get one */
1416 ObtainWriteLock(&client->lock);
1417 client->refCount = 1;
1418 client->host = host;
1419 client->next = host->FirstClient;
1420 host->FirstClient = client;
1421 #if FS_STATS_DETAILED
1422 client->InSameNetwork = host->InSameNetwork;
1423 #endif /* FS_STATS_DETAILED */
1424 client->ViceId = viceid;
1425 client->expTime = expTime; /* rx only */
1426 client->authClass = authClass; /* rx only */
1427 client->sid = rxr_CidOf(tcon);
1428 client->VenusEpoch = rxr_GetEpoch(tcon);
1429 client->CPS.prlist_val = 0;
1430 client->CPS.prlist_len = 0;
1431 CurrentConnections++; /* increment number of connections */
1434 client->prfail = fail;
1436 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
1437 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID)) {
1438 free(client->CPS.prlist_val);
1440 client->CPS.prlist_val = NULL;
1441 client->CPS.prlist_len = 0;
1442 client->ViceId = viceid;
1443 client->expTime = expTime;
1445 if (viceid == ANONYMOUSID) {
1446 client->CPS.prlist_len = AnonCPS.prlist_len;
1447 client->CPS.prlist_val = AnonCPS.prlist_val;
1450 code = pr_GetCPS(viceid, &client->CPS);
1454 ViceLog(0, ("pr_GetCPS failed(%d) for user %d, host %s:%d\n",
1456 afs_inet_ntoa_r(client->host->host, hoststr),
1457 ntohs(client->host->port)));
1459 /* Although ubik_Call (called by pr_GetCPS) traverses thru
1460 * all protection servers and reevaluates things if no
1461 * sync server or quorum is found we could still end up
1462 * with one of these errors. In such case we would like to
1463 * reevaluate the rpc call to find if there's cps for this
1464 * guy. We treat other errors (except network failures
1465 * ones - i.e. code < 0) as an indication that there is no
1466 * CPS for this host. Ideally we could like to deal this
1467 * problem the other way around (i.e. if code == NOCPS
1468 * ignore else retry next time) but the problem is that
1469 * there're other errors (i.e. EPERM) for which we don't
1470 * want to retry and we don't know the whole code list!
1472 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
1476 /* the disabling of system:administrators is so iffy and has so many
1477 * possible failure modes that we will disable it again */
1478 /* Turn off System:Administrator for safety
1479 if (AL_IsAMember(SystemId, client->CPS) == 0)
1480 assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
1483 /* Now, tcon may already be set to a rock, since we blocked with no host
1484 * or client locks set above in pr_GetCPS (XXXX some locking is probably
1485 * required). So, before setting the RPC's rock, we should disconnect
1486 * the RPC from the other client structure's rock.
1488 oldClient = (struct client *) rx_GetSpecific(tcon, rxcon_client_key);
1489 if (oldClient && oldClient->tcon == tcon) {
1490 oldClient->tcon = (struct rx_connection *) 0;
1491 /* rx_SetSpecific will be done immediately below */
1493 client->tcon = tcon;
1494 rx_SetSpecific(tcon, rxcon_client_key, client);
1495 ReleaseWriteLock(&client->lock);
1499 } /*h_FindClient_r*/
1501 int h_ReleaseClient_r(struct client *client)
1503 assert(client->refCount > 0);
1510 * Sigh: this one is used to get the client AGAIN within the individual
1511 * server routines. This does not bother h_Holding the host, since
1512 * this is assumed already have been done by the server main loop.
1513 * It does check tokens, since only the server routines can return the
1514 * VICETOKENDEAD error code
1516 int GetClient(struct rx_connection * tcon, struct client **cp)
1518 register struct client *client;
1522 *cp = client = (struct client *) rx_GetSpecific(tcon, rxcon_client_key);
1523 if (client == NULL || client->tcon == NULL) {
1524 ViceLog(0, ("GetClient: no client in conn %x (host %x), VBUSYING\n",
1525 tcon, rx_HostOf(rx_PeerOf(tcon))));
1529 if (rxr_CidOf(client->tcon) != client->sid) {
1530 ViceLog(0, ("GetClient: tcon %x tcon sid %d client sid %d\n",
1531 client->tcon, rxr_CidOf(client->tcon),
1536 if (!(client && client->tcon && rxr_CidOf(client->tcon) == client->sid)) {
1538 ViceLog(0, ("GetClient: no client in conn %x\n", tcon));
1540 ViceLog(0, ("GetClient: tcon %x tcon sid %d client sid %d\n",
1541 client->tcon, client->tcon ? rxr_CidOf(client->tcon)
1542 : -1, client->sid));
1546 client->LastCall > client->expTime && client->expTime) {
1548 ViceLog(1, ("Token for %s at %s:%d expired %d\n",
1550 afs_inet_ntoa_r(client->host->host, hoststr),
1551 ntohs(client->host->port), client->expTime));
1553 return VICETOKENDEAD;
1562 /* Client user name for short term use. Note that this is NOT inexpensive */
1563 char *h_UserName(struct client *client)
1565 static char User[PR_MAXNAMELEN+1];
1569 lids.idlist_len = 1;
1570 lids.idlist_val = (afs_int32 *)malloc(1*sizeof(afs_int32));
1571 if (!lids.idlist_val) {
1572 ViceLog(0, ("Failed malloc in h_UserName\n"));
1575 lnames.namelist_len = 0;
1576 lnames.namelist_val = (prname *)0;
1577 lids.idlist_val[0] = client->ViceId;
1578 if (pr_IdToName(&lids,&lnames)) {
1579 /* We need to free id we alloced above! */
1580 free(lids.idlist_val);
1581 return "*UNKNOWN USER NAME*";
1583 strncpy(User,lnames.namelist_val[0],PR_MAXNAMELEN);
1584 free(lids.idlist_val);
1585 free(lnames.namelist_val);
1594 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
1595 CEs, CEBlocks, HTs, HTBlocks));
1601 h_PrintClient(register struct host *host, int held, StreamHandle_t *file)
1603 register struct client *client;
1610 if (host->hostFlags & HOSTDELETED) {
1614 sprintf(tmpStr,"Host %s:%d down = %d, LastCall %s",
1615 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1616 (host->hostFlags & VENUSDOWN),
1617 afs_ctime((time_t *)&host->LastCall, tbuffer, sizeof(tbuffer)));
1618 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1619 for (client = host->FirstClient; client; client=client->next) {
1620 if (!client->deleted) {
1622 sprintf(tmpStr, " user id=%d, name=%s, sl=%s till %s",
1623 client->ViceId, h_UserName(client),
1624 client->authClass ? "Authenticated" : "Not authenticated",
1626 afs_ctime((time_t *)&client->expTime, tbuffer, sizeof(tbuffer))
1628 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1631 sprintf(tmpStr, " user=%s, no current server connection\n",
1632 h_UserName(client));
1633 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1635 sprintf(tmpStr, " CPS-%d is [", client->CPS.prlist_len);
1636 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1637 if (client->CPS.prlist_val) {
1638 for (i=0; i > client->CPS.prlist_len; i++) {
1639 sprintf(tmpStr, " %d", client->CPS.prlist_val[i]);
1640 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1643 sprintf(tmpStr, "]\n");
1644 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1655 * Print a list of clients, with last security level and token value seen,
1658 void h_PrintClients()
1664 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
1667 ViceLog(0, ("Couldn't create client dump file %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
1670 now = FT_ApproxTime();
1671 sprintf(tmpStr, "List of active users at %s\n",
1672 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
1673 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1674 h_Enumerate(h_PrintClient, (char *)file);
1675 STREAM_REALLYCLOSE(file);
1676 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
1683 h_DumpHost(register struct host *host, int held, StreamHandle_t *file)
1689 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 [",
1690 host->host, ntohs(host->port), host->index, host->cblist,
1691 CheckLock(&host->lock), host->LastCall, host->ActiveCall,
1692 (host->hostFlags & VENUSDOWN), host->hostFlags&HOSTDELETED,
1693 host->Console, host->hostFlags & CLIENTDELETED,
1694 host->hcpsfailed, host->cpsCall);
1695 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1696 if (host->hcps.prlist_val)
1697 for (i=0; i < host->hcps.prlist_len; i++) {
1698 sprintf(tmpStr, " %d", host->hcps.prlist_val[i]);
1699 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1701 sprintf(tmpStr, "] [");
1702 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1703 if ( host->interface)
1704 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1705 sprintf(tmpStr, " %x", host->interface->addr[i]);
1706 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1708 sprintf(tmpStr, "] holds: ");
1709 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1711 for (i = 0 ; i < h_maxSlots ; i++) {
1712 sprintf(tmpStr, "%04x", host->holds[i]);
1713 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1715 sprintf(tmpStr, " slot/bit: %d/%d\n", h_holdSlot(), h_holdbit());
1716 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1727 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
1732 ViceLog(0, ("Couldn't create host dump file %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
1735 now = FT_ApproxTime();
1736 sprintf(tmpStr, "List of active hosts at %s\n",
1737 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
1738 STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1739 h_Enumerate(h_DumpHost, (char *) file);
1740 STREAM_REALLYCLOSE(file);
1741 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
1747 * This counts the number of workstations, the number of active workstations,
1748 * and the number of workstations declared "down" (i.e. not heard from
1749 * recently). An active workstation has received a call since the cutoff
1750 * time argument passed.
1753 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
1756 register struct host *host;
1757 register int num=0, active=0, del=0;
1760 for (host = hostList; host; host = host->next) {
1761 if (!(host->hostFlags & HOSTDELETED)) {
1763 if (host->ActiveCall > cutofftime)
1765 if (host->hostFlags & VENUSDOWN)
1777 } /*h_GetWorkStats*/
1780 /*------------------------------------------------------------------------
1781 * PRIVATE h_ClassifyAddress
1784 * Given a target IP address and a candidate IP address (both
1785 * in host byte order), classify the candidate into one of three
1786 * buckets in relation to the target by bumping the counters passed
1790 * a_targetAddr : Target address.
1791 * a_candAddr : Candidate address.
1792 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
1793 * addresses are either in the same network
1794 * or the same subnet.
1795 * a_diffSubnetP : ...when the candidate is in a different
1797 * a_diffNetworkP : ...when the candidate is in a different
1804 * The target and candidate addresses are both in host byte
1805 * order, NOT network byte order, when passed in.
1809 *------------------------------------------------------------------------*/
1811 static void h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
1812 afs_int32 *a_sameNetOrSubnetP,
1813 afs_int32 *a_diffSubnetP,
1814 afs_int32 *a_diffNetworkP)
1815 { /*h_ClassifyAddress*/
1817 register int i; /*Iterator thru host hash table*/
1818 register struct host *hostP; /*Ptr to current host entry*/
1819 register afs_uint32 currHostAddr; /*Current host address*/
1820 afs_uint32 targetNet;
1821 afs_uint32 targetSubnet;
1823 afs_uint32 candSubnet;
1826 * Put bad values into the subnet info to start with.
1828 targetSubnet = (afs_uint32) 0;
1829 candSubnet = (afs_uint32) 0;
1832 * Pull out the network and subnetwork numbers from the target
1833 * and candidate addresses. We can short-circuit this whole
1834 * affair if the target and candidate addresses are not of the
1837 if (IN_CLASSA(a_targetAddr)) {
1838 if (!(IN_CLASSA(a_candAddr))) {
1839 (*a_diffNetworkP)++;
1842 targetNet = a_targetAddr & IN_CLASSA_NET;
1843 candNet = a_candAddr & IN_CLASSA_NET;
1844 if (IN_SUBNETA(a_targetAddr))
1845 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
1846 if (IN_SUBNETA(a_candAddr))
1847 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
1850 if (IN_CLASSB(a_targetAddr)) {
1851 if (!(IN_CLASSB(a_candAddr))) {
1852 (*a_diffNetworkP)++;
1855 targetNet = a_targetAddr & IN_CLASSB_NET;
1856 candNet = a_candAddr & IN_CLASSB_NET;
1857 if (IN_SUBNETB(a_targetAddr))
1858 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
1859 if (IN_SUBNETB(a_candAddr))
1860 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
1861 } /*Class B target*/
1863 if (IN_CLASSC(a_targetAddr)) {
1864 if (!(IN_CLASSC(a_candAddr))) {
1865 (*a_diffNetworkP)++;
1868 targetNet = a_targetAddr & IN_CLASSC_NET;
1869 candNet = a_candAddr & IN_CLASSC_NET;
1872 * Note that class C addresses can't have subnets,
1873 * so we leave the defaults untouched.
1875 } /*Class C target*/
1877 targetNet = a_targetAddr;
1878 candNet = a_candAddr;
1879 } /*Class D address*/
1882 * Now, simply compare the extracted net and subnet values for
1883 * the two addresses (which at this point are known to be of the
1886 if (targetNet == candNet) {
1887 if (targetSubnet == candSubnet)
1888 (*a_sameNetOrSubnetP)++;
1893 (*a_diffNetworkP)++;
1895 } /*h_ClassifyAddress*/
1898 /*------------------------------------------------------------------------
1899 * EXPORTED h_GetHostNetStats
1902 * Iterate through the host table, and classify each (non-deleted)
1903 * host entry into ``proximity'' categories (same net or subnet,
1904 * different subnet, different network).
1907 * a_numHostsP : Set to total number of (non-deleted) hosts.
1908 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
1909 * a_diffSubnetP : Set to # hosts on diff subnet as server.
1910 * a_diffNetworkP : Set to # hosts on diff network as server.
1916 * We only count non-deleted hosts. The storage pointed to by our
1917 * parameters is zeroed upon entry.
1921 *------------------------------------------------------------------------*/
1923 void h_GetHostNetStats(afs_int32 *a_numHostsP, afs_int32 *a_sameNetOrSubnetP,
1924 afs_int32 *a_diffSubnetP, afs_int32 *a_diffNetworkP)
1925 { /*h_GetHostNetStats*/
1927 register struct host *hostP; /*Ptr to current host entry*/
1928 register afs_uint32 currAddr_HBO; /*Curr host addr, host byte order*/
1931 * Clear out the storage pointed to by our parameters.
1933 *a_numHostsP = (afs_int32) 0;
1934 *a_sameNetOrSubnetP = (afs_int32) 0;
1935 *a_diffSubnetP = (afs_int32) 0;
1936 *a_diffNetworkP = (afs_int32) 0;
1939 for (hostP = hostList; hostP; hostP = hostP->next) {
1940 if (!(hostP->hostFlags & HOSTDELETED)) {
1942 * Bump the number of undeleted host entries found.
1943 * In classifying the current entry's address, make
1944 * sure to first convert to host byte order.
1947 currAddr_HBO = (afs_uint32)ntohl(hostP->host);
1948 h_ClassifyAddress(FS_HostAddr_HBO,
1953 } /*Only look at non-deleted hosts*/
1954 } /*For each host record hashed to this index*/
1957 } /*h_GetHostNetStats*/
1959 static afs_uint32 checktime;
1960 static afs_uint32 clientdeletetime;
1961 static struct AFSFid zerofid;
1965 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
1966 * Since it can serialize them, and pile up, it should be a separate LWP
1967 * from other events.
1969 int CheckHost(register struct host *host, int held)
1971 register struct client *client;
1974 /* Host is held by h_Enumerate */
1976 for (client = host->FirstClient; client; client = client->next) {
1977 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
1978 client->deleted = 1;
1979 host->hostFlags |= CLIENTDELETED;
1982 if (host->LastCall < checktime) {
1984 if (!(host->hostFlags & HOSTDELETED)) {
1985 if (host->LastCall < clientdeletetime) {
1986 host->hostFlags |= HOSTDELETED;
1987 if (!(host->hostFlags & VENUSDOWN)) {
1988 host->hostFlags &= ~ALTADDR; /* alternate address invalid*/
1989 if (host->interface) {
1991 code = RXAFSCB_InitCallBackState3(host->callback_rxcon,
1996 code = RXAFSCB_InitCallBackState(host->callback_rxcon);
1999 host->hostFlags |= ALTADDR; /* alternate addresses valid */
2003 afs_inet_ntoa_r(host->host, hoststr);
2005 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
2006 hoststr, ntohs(host->port)));
2007 host->hostFlags |= VENUSDOWN;
2009 /* Note: it's safe to delete hosts even if they have call
2010 * back state, because break delayed callbacks (called when a
2011 * message is received from the workstation) will always send a
2012 * break all call backs to the workstation if there is no
2018 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
2019 if (host->interface) {
2020 afsUUID uuid = host->interface->uuid;
2022 code = RXAFSCB_ProbeUuid(host->callback_rxcon, &uuid);
2025 if ( MultiProbeAlternateAddress_r(host) ) {
2027 afs_inet_ntoa_r(host->host, hoststr);
2029 ("ProbeUuid failed for host %s:%d\n",
2030 hoststr, ntohs(host->port)));
2031 host->hostFlags |= VENUSDOWN;
2036 code = RXAFSCB_Probe(host->callback_rxcon);
2040 afs_inet_ntoa_r(host->host, hoststr);
2041 ViceLog(0, ("Probe failed for host %s:%d\n",
2042 hoststr, ntohs(host->port)));
2043 host->hostFlags |= VENUSDOWN;
2058 * Set VenusDown for any hosts that have not had a call in 15 minutes and
2059 * don't respond to a probe. Note that VenusDown can only be cleared if
2060 * a message is received from the host (see ServerLWP in file.c).
2061 * Delete hosts that have not had any calls in 1 hour, clients that
2062 * have not had any calls in 15 minutes.
2064 * This routine is called roughly every 5 minutes.
2066 void h_CheckHosts() {
2067 afs_uint32 now = FT_ApproxTime();
2069 memset((char *)&zerofid, 0, sizeof(zerofid));
2071 * Send a probe to the workstation if it hasn't been heard from in
2074 checktime = now - 15*60;
2075 clientdeletetime = now - 120*60; /* 2 hours ago */
2076 h_Enumerate(CheckHost, NULL);
2081 * This is called with host locked and held. At this point, the
2082 * hostHashTable should not be having entries for the alternate
2083 * interfaces. This function has to insert these entries in the
2086 * The addresses in the ineterfaceAddr list are in host byte order.
2089 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
2095 struct Interface *interface;
2100 ViceLog(125,("initInterfaceAddr : host %x numAddr %d\n",
2101 host->host, interf->numberOfInterfaces));
2103 number = interf->numberOfInterfaces;
2104 myHost = host->host; /* current interface address */
2106 /* validation checks */
2107 if ( number < 0 || number > AFS_MAX_INTERFACE_ADDR )
2109 ViceLog(0,("Number of alternate addresses returned is %d\n",
2115 * Convert IP addresses to network byte order, and remove for
2116 * duplicate IP addresses from the interface list.
2118 for (i = 0, count = 0, found = 0; i < number; i++)
2120 interf->addr_in[i] = htonl(interf->addr_in[i]);
2121 for (j = 0 ; j < count ; j++) {
2122 if (interf->addr_in[j] == interf->addr_in[i])
2126 interf->addr_in[count] = interf->addr_in[i];
2127 if (interf->addr_in[count] == myHost)
2134 * Allocate and initialize an interface structure for this host.
2137 interface = (struct Interface *)
2138 malloc(sizeof(struct Interface) +
2139 (sizeof(afs_int32) * (count-1)));
2141 ViceLog(0, ("Failed malloc in initInterfaceAddr_r\n"));
2144 interface->numberOfInterfaces = count;
2146 interface = (struct Interface *)
2147 malloc(sizeof(struct Interface) +
2148 (sizeof(afs_int32) * count));
2150 interface->numberOfInterfaces = count + 1;
2151 interface->addr[count] = myHost;
2153 interface->uuid = interf->uuid;
2154 for (i = 0 ; i < count ; i++)
2155 interface->addr[i] = interf->addr_in[i];
2157 assert(!host->interface);
2158 host->interface = interface;
2160 for ( i=0; i < host->interface->numberOfInterfaces; i++)
2162 ViceLog(125,("--- alt address %x\n", host->interface->addr[i]));
2168 /* inserts a new HashChain structure corresponding to this address */
2169 void hashInsert_r(afs_int32 addr, struct host* host)
2172 struct h_hashChain* chain;
2174 /* hash into proper bucket */
2175 index = h_HashIndex(addr);
2177 /* insert into beginning of list for this bucket */
2178 chain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
2180 ViceLog(0, ("Failed malloc in hashInsert_r\n"));
2183 chain->hostPtr = host;
2184 chain->next = hostHashTable[index];
2186 hostHashTable[index] = chain;
2191 * This is called with host locked and held. At this point, the
2192 * hostHashTable should not be having entries for the alternate
2193 * interfaces. This function has to insert these entries in the
2196 * All addresses are in network byte order.
2199 addInterfaceAddr_r(struct host *host, afs_int32 addr)
2204 struct Interface *interface;
2207 assert(host->interface);
2209 ViceLog(125,("addInterfaceAddr : host %x addr %d\n",
2213 * Make sure this address is on the list of known addresses
2216 number = host->interface->numberOfInterfaces;
2217 for ( i=0, found=0; i < number && !found; i++)
2219 if ( host->interface->addr[i] == addr)
2223 interface = (struct Interface *)
2224 malloc(sizeof(struct Interface) +
2225 (sizeof(afs_int32) * number));
2227 ViceLog(0, ("Failed malloc in addInterfaceAddr_r\n"));
2230 interface->numberOfInterfaces = number + 1;
2231 interface->uuid = host->interface->uuid;
2232 for (i = 0 ; i < number ; i++)
2233 interface->addr[i] = host->interface->addr[i];
2234 interface->addr[number] = addr;
2235 free(host->interface);
2236 host->interface = interface;
2240 * Create a hash table entry for this address
2242 hashInsert_r(addr, host);
2247 /* deleted a HashChain structure for this address and host */
2248 /* returns 1 on success */
2250 hashDelete_r(afs_int32 addr, struct host* host)
2254 register struct h_hashChain **hp, *th;
2256 for (hp = &hostHashTable[h_HashIndex(addr)]; (th = *hp); )
2258 assert(th->hostPtr);
2259 if (th->hostPtr == host && th->addr == addr)
2274 ** prints out all alternate interface address for the host. The 'level'
2275 ** parameter indicates what level of debugging sets this output
2278 printInterfaceAddr(struct host *host, int level)
2281 if ( host-> interface )
2283 /* check alternate addresses */
2284 number = host->interface->numberOfInterfaces;
2285 assert( number > 0 );
2286 for ( i=0; i < number; i++)
2287 ViceLog(level, ("%x ", host->interface->addr[i]));
2289 ViceLog(level, ("\n"));