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>
24 #include <netinet/in.h>
37 #include <afs/assert.h>
40 #include <afs/afsint.h>
41 #include <afs/rxgen_consts.h>
43 #include <afs/errors.h>
44 #include <afs/ihandle.h>
45 #include <afs/vnode.h>
46 #include <afs/volume.h>
47 #ifdef AFS_ATHENA_STDENV
51 #include <afs/ptclient.h>
52 #include <afs/prs_fs.h>
54 #include <afs/afsutil.h>
56 #include <afs/cellconfig.h>
58 #include "viced_prototypes.h"
63 #ifdef AFS_PTHREAD_ENV
64 pthread_mutex_t host_glock_mutex;
65 #endif /* AFS_PTHREAD_ENV */
68 extern int CurrentConnections;
70 extern int AnonymousID;
71 extern prlist AnonCPS;
73 extern struct afsconf_dir *confDir; /* config dir object */
74 extern int lwps; /* the max number of server threads */
75 extern afsUUID FS_HostUUID;
77 int CEs = 0; /* active clients */
78 int CEBlocks = 0; /* number of blocks of CEs */
79 struct client *CEFree = 0; /* first free client */
80 struct host *hostList = 0; /* linked list of all hosts */
81 int hostCount = 0; /* number of hosts in hostList */
85 #define CESPERBLOCK 73
86 struct CEBlock { /* block of CESPERBLOCK file entries */
87 struct client entry[CESPERBLOCK];
90 static void h_TossStuff_r(register struct host *host);
93 * Make sure the subnet macros have been defined.
96 #define IN_SUBNETA(i) ((((afs_int32)(i))&0x80800000)==0x00800000)
99 #ifndef IN_CLASSA_SUBNET
100 #define IN_CLASSA_SUBNET 0xffff0000
104 #define IN_SUBNETB(i) ((((afs_int32)(i))&0xc0008000)==0x80008000)
107 #ifndef IN_CLASSB_SUBNET
108 #define IN_CLASSB_SUBNET 0xffffff00
111 #define rxr_GetEpoch(aconn) (((struct rx_connection *)(aconn))->epoch)
113 #define rxr_CidOf(aconn) (((struct rx_connection *)(aconn))->cid)
115 #define rxr_PortOf(aconn) \
116 rx_PortOf(rx_PeerOf(((struct rx_connection *)(aconn))))
118 #define rxr_HostOf(aconn) \
119 rx_HostOf(rx_PeerOf((struct rx_connection *)(aconn)))
122 /* get a new block of CEs and chain it on CEFree */
126 register struct CEBlock *block;
129 block = (struct CEBlock *)malloc(sizeof(struct CEBlock));
131 ViceLog(0, ("Failed malloc in GetCEBlock\n"));
132 ShutDownAndCore(PANIC);
135 for (i = 0; i < (CESPERBLOCK - 1); i++) {
136 Lock_Init(&block->entry[i].lock);
137 block->entry[i].next = &(block->entry[i + 1]);
139 block->entry[CESPERBLOCK - 1].next = 0;
140 Lock_Init(&block->entry[CESPERBLOCK - 1].lock);
141 CEFree = (struct client *)block;
147 /* get the next available CE */
148 static struct client *
151 register struct client *entry;
156 ViceLog(0, ("CEFree NULL in GetCE\n"));
157 ShutDownAndCore(PANIC);
161 CEFree = entry->next;
163 memset((char *)entry, 0, CLIENT_TO_ZERO(entry));
169 /* return an entry to the free list */
171 FreeCE(register struct client *entry)
173 entry->next = CEFree;
180 * The HTs and HTBlocks variables were formerly static, but they are
181 * now referenced elsewhere in the FileServer.
183 int HTs = 0; /* active file entries */
184 int HTBlocks = 0; /* number of blocks of HTs */
185 static struct host *HTFree = 0; /* first free file entry */
188 * Hash tables of host pointers. We need two tables, one
189 * to map IP addresses onto host pointers, and another
190 * to map host UUIDs onto host pointers.
192 static struct h_hashChain *hostHashTable[h_HASHENTRIES];
193 static struct h_hashChain *hostUuidHashTable[h_HASHENTRIES];
194 #define h_HashIndex(hostip) ((hostip) & (h_HASHENTRIES-1))
195 #define h_UuidHashIndex(uuidp) (((int)(afs_uuid_hash(uuidp))) & (h_HASHENTRIES-1))
197 struct HTBlock { /* block of HTSPERBLOCK file entries */
198 struct host entry[h_HTSPERBLOCK];
202 /* get a new block of HTs and chain it on HTFree */
206 register struct HTBlock *block;
208 static int index = 0;
210 block = (struct HTBlock *)malloc(sizeof(struct HTBlock));
212 ViceLog(0, ("Failed malloc in GetHTBlock\n"));
213 ShutDownAndCore(PANIC);
215 #ifdef AFS_PTHREAD_ENV
216 for (i = 0; i < (h_HTSPERBLOCK); i++)
217 assert(pthread_cond_init(&block->entry[i].cond, NULL) == 0);
218 #endif /* AFS_PTHREAD_ENV */
219 for (i = 0; i < (h_HTSPERBLOCK); i++)
220 Lock_Init(&block->entry[i].lock);
221 for (i = 0; i < (h_HTSPERBLOCK - 1); i++)
222 block->entry[i].next = &(block->entry[i + 1]);
223 for (i = 0; i < (h_HTSPERBLOCK); i++)
224 block->entry[i].index = index++;
225 block->entry[h_HTSPERBLOCK - 1].next = 0;
226 HTFree = (struct host *)block;
227 hosttableptrs[HTBlocks++] = block->entry;
232 /* get the next available HT */
236 register struct host *entry;
242 HTFree = entry->next;
244 memset((char *)entry, 0, HOST_TO_ZERO(entry));
250 /* return an entry to the free list */
252 FreeHT(register struct host *entry)
254 entry->next = HTFree;
261 static short consolePort = 0;
264 h_Release(register struct host *host)
273 * If this thread does not have a hold on this host AND
274 * if other threads also dont have any holds on this host AND
275 * If either the HOSTDELETED or CLIENTDELETED flags are set
279 h_Release_r(register struct host *host)
282 if (!((host)->holds[h_holdSlot()] & ~h_holdbit())) {
283 if (!h_OtherHolds_r(host)) {
284 /* must avoid masking this until after h_OtherHolds_r runs
285 * but it should be run before h_TossStuff_r */
286 (host)->holds[h_holdSlot()] &= ~h_holdbit();
287 if ((host->hostFlags & HOSTDELETED)
288 || (host->hostFlags & CLIENTDELETED)) {
292 (host)->holds[h_holdSlot()] &= ~h_holdbit();
294 (host)->holds[h_holdSlot()] &= ~h_holdbit();
300 h_OtherHolds_r(register struct host *host)
302 register int i, bit, slot;
305 for (i = 0; i < h_maxSlots; i++) {
306 if (host->holds[i] != ((i == slot) ? bit : 0)) {
314 h_Lock_r(register struct host *host)
324 * returns 1 if already locked
325 * else returns locks and returns 0
329 h_NBLock_r(register struct host *host)
331 struct Lock *hostLock = &host->lock;
336 if (!(hostLock->excl_locked) && !(hostLock->readers_reading))
337 hostLock->excl_locked = WRITE_LOCK;
341 LOCK_UNLOCK(hostLock);
350 #if FS_STATS_DETAILED
351 /*------------------------------------------------------------------------
352 * PRIVATE h_AddrInSameNetwork
355 * Given a target IP address and a candidate IP address (both
356 * in host byte order), return a non-zero value (1) if the
357 * candidate address is in a different network from the target
361 * a_targetAddr : Target address.
362 * a_candAddr : Candidate address.
365 * 1 if the candidate address is in the same net as the target,
369 * The target and candidate addresses are both in host byte
370 * order, NOT network byte order, when passed in. We return
371 * our value as a character, since that's the type of field in
372 * the host structure, where this info will be stored.
376 *------------------------------------------------------------------------*/
379 h_AddrInSameNetwork(afs_uint32 a_targetAddr, afs_uint32 a_candAddr)
380 { /*h_AddrInSameNetwork */
382 afs_uint32 targetNet;
386 * Pull out the network and subnetwork numbers from the target
387 * and candidate addresses. We can short-circuit this whole
388 * affair if the target and candidate addresses are not of the
391 if (IN_CLASSA(a_targetAddr)) {
392 if (!(IN_CLASSA(a_candAddr))) {
395 targetNet = a_targetAddr & IN_CLASSA_NET;
396 candNet = a_candAddr & IN_CLASSA_NET;
397 } else if (IN_CLASSB(a_targetAddr)) {
398 if (!(IN_CLASSB(a_candAddr))) {
401 targetNet = a_targetAddr & IN_CLASSB_NET;
402 candNet = a_candAddr & IN_CLASSB_NET;
403 } /*Class B target */
404 else if (IN_CLASSC(a_targetAddr)) {
405 if (!(IN_CLASSC(a_candAddr))) {
408 targetNet = a_targetAddr & IN_CLASSC_NET;
409 candNet = a_candAddr & IN_CLASSC_NET;
410 } /*Class C target */
412 targetNet = a_targetAddr;
413 candNet = a_candAddr;
414 } /*Class D address */
417 * Now, simply compare the extracted net values for the two addresses
418 * (which at this point are known to be of the same class)
420 if (targetNet == candNet)
425 } /*h_AddrInSameNetwork */
426 #endif /* FS_STATS_DETAILED */
429 /* Assumptions: called with held host */
431 h_gethostcps_r(register struct host *host, register afs_int32 now)
436 /* wait if somebody else is already doing the getCPS call */
437 while (host->hostFlags & HCPS_INPROGRESS) {
438 slept = 1; /* I did sleep */
439 host->hostFlags |= HCPS_WAITING; /* I am sleeping now */
440 #ifdef AFS_PTHREAD_ENV
441 pthread_cond_wait(&host->cond, &host_glock_mutex);
442 #else /* AFS_PTHREAD_ENV */
443 if ((code = LWP_WaitProcess(&(host->hostFlags))) != LWP_SUCCESS)
444 ViceLog(0, ("LWP_WaitProcess returned %d\n", code));
445 #endif /* AFS_PTHREAD_ENV */
449 host->hostFlags |= HCPS_INPROGRESS; /* mark as CPSCall in progress */
450 if (host->hcps.prlist_val)
451 free(host->hcps.prlist_val); /* this is for hostaclRefresh */
452 host->hcps.prlist_val = NULL;
453 host->hcps.prlist_len = 0;
454 slept ? (host->cpsCall = FT_ApproxTime()) : (host->cpsCall = now);
457 code = pr_GetHostCPS(htonl(host->host), &host->hcps);
461 * Although ubik_Call (called by pr_GetHostCPS) traverses thru all protection servers
462 * and reevaluates things if no sync server or quorum is found we could still end up
463 * with one of these errors. In such case we would like to reevaluate the rpc call to
464 * find if there's cps for this guy. We treat other errors (except network failures
465 * ones - i.e. code < 0) as an indication that there is no CPS for this host. Ideally
466 * we could like to deal this problem the other way around (i.e. if code == NOCPS
467 * ignore else retry next time) but the problem is that there're other errors (i.e.
468 * EPERM) for which we don't want to retry and we don't know the whole code list!
470 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC) {
472 * We would have preferred to use a while loop and try again since ops in protected
473 * acls for this host will fail now but they'll be reevaluated on any subsequent
474 * call. The attempt to wait for a quorum/sync site or network error won't work
475 * since this problems really should only occurs during a complete fileserver
476 * restart. Since the fileserver will start before the ptservers (and thus before
477 * quorums are complete) clients will be utilizing all the fileserver's lwps!!
479 host->hcpsfailed = 1;
481 ("Warning: GetHostCPS failed (%d) for %x; will retry\n",
484 host->hcpsfailed = 0;
486 ("gethost: GetHostCPS failed (%d) for %x; ignored\n",
489 if (host->hcps.prlist_val)
490 free(host->hcps.prlist_val);
491 host->hcps.prlist_val = NULL;
492 host->hcps.prlist_len = 0; /* Make sure it's zero */
494 host->hcpsfailed = 0;
496 host->hostFlags &= ~HCPS_INPROGRESS;
497 /* signal all who are waiting */
498 if (host->hostFlags & HCPS_WAITING) { /* somebody is waiting */
499 host->hostFlags &= ~HCPS_WAITING;
500 #ifdef AFS_PTHREAD_ENV
501 assert(pthread_cond_broadcast(&host->cond) == 0);
502 #else /* AFS_PTHREAD_ENV */
503 if ((code = LWP_NoYieldSignal(&(host->hostFlags))) != LWP_SUCCESS)
504 ViceLog(0, ("LWP_NoYieldSignal returns %d\n", code));
505 #endif /* AFS_PTHREAD_ENV */
509 /* args in net byte order */
511 h_flushhostcps(register afs_uint32 hostaddr, register afs_uint32 hport)
513 register struct host *host;
517 host = h_Lookup_r(hostaddr, hport, &held);
519 host->hcpsfailed = 1;
529 * Allocate a host. It will be identified by the peer (ip,port) info in the
530 * rx connection provided. The host is returned held and locked
532 #define DEF_ROPCONS 2115
535 h_Alloc_r(register struct rx_connection *r_con)
537 struct servent *serverentry;
538 register index = h_HashIndex(rxr_HostOf(r_con));
539 register struct host *host;
540 static struct rx_securityClass *sc = 0;
542 struct h_hashChain *h_hashChain;
543 #if FS_STATS_DETAILED
544 afs_uint32 newHostAddr_HBO; /*New host IP addr, in host byte order */
545 #endif /* FS_STATS_DETAILED */
549 h_hashChain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
551 ViceLog(0, ("Failed malloc in h_Alloc_r\n"));
554 h_hashChain->hostPtr = host;
555 h_hashChain->addr = rxr_HostOf(r_con);
556 h_hashChain->next = hostHashTable[index];
557 hostHashTable[index] = h_hashChain;
559 host->host = rxr_HostOf(r_con);
560 host->port = rxr_PortOf(r_con);
561 if (consolePort == 0) { /* find the portal number for console */
562 #if defined(AFS_OSF_ENV)
563 serverentry = getservbyname("ropcons", "");
565 serverentry = getservbyname("ropcons", 0);
568 consolePort = serverentry->s_port;
570 consolePort = htons(DEF_ROPCONS); /* Use a default */
572 if (host->port == consolePort)
574 /* Make a callback channel even for the console, on the off chance that it
575 * makes a request that causes a break call back. It shouldn't. */
578 sc = rxnull_NewClientSecurityObject();
579 host->callback_rxcon =
580 rx_NewConnection(host->host, host->port, 1, sc, 0);
581 rx_SetConnDeadTime(host->callback_rxcon, 50);
582 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
584 now = host->LastCall = host->cpsCall = host->ActiveCall = FT_ApproxTime();
586 host->hcps.prlist_val = NULL;
587 host->hcps.prlist_len = 0;
590 host->hcpsfailed = 0; /* save cycles */
591 h_gethostcps(host); /* do this under host hold/lock */
593 host->FirstClient = 0;
596 h_InsertList_r(host); /* update global host List */
597 #if FS_STATS_DETAILED
599 * Compare the new host's IP address (in host byte order) with ours
600 * (the File Server's), remembering if they are in the same network.
602 newHostAddr_HBO = (afs_uint32) ntohl(host->host);
603 host->InSameNetwork =
604 h_AddrInSameNetwork(FS_HostAddr_HBO, newHostAddr_HBO);
605 #endif /* FS_STATS_DETAILED */
611 /* Lookup a host given an IP address and UDP port number. */
612 /* hostaddr and hport are in network order */
613 /* Note: host should be released by caller if 0 == *heldp and non-null */
614 /* hostaddr and hport are in network order */
616 h_Lookup_r(afs_uint32 haddr, afs_uint32 hport, int *heldp)
618 register afs_int32 now;
619 register struct host *host = 0;
620 register struct h_hashChain *chain;
621 register index = h_HashIndex(haddr);
622 extern int hostaclRefresh;
625 for (chain = hostHashTable[index]; chain; chain = chain->next) {
626 host = chain->hostPtr;
628 if (!(host->hostFlags & HOSTDELETED) && chain->addr == haddr
629 && chain->port == hport) {
630 *heldp = h_Held_r(host);
634 if (host->hostFlags & HOSTDELETED) {
641 now = FT_ApproxTime(); /* always evaluate "now" */
642 if (host->hcpsfailed || (host->cpsCall + hostaclRefresh < now)) {
644 * Every hostaclRefresh period (def 2 hrs) get the new
645 * membership list for the host. Note this could be the
646 * first time that the host is added to a group. Also
647 * here we also retry on previous legitimate hcps failures.
649 * If we get here we still have a host hold.
651 h_gethostcps_r(host, now);
661 /* Lookup a host given its UUID. */
663 h_LookupUuid_r(afsUUID * uuidp)
665 register struct host *host = 0;
666 register struct h_hashChain *chain;
667 register index = h_UuidHashIndex(uuidp);
669 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
670 host = chain->hostPtr;
672 if (!(host->hostFlags & HOSTDELETED) && host->interface
673 && afs_uuid_equal(&host->interface->uuid, uuidp)) {
684 * h_Hold_r: Establish a hold by the current LWP on this host--the host
685 * or its clients will not be physically deleted until all holds have
687 * NOTE: h_Hold_r is a macro defined in host.h.
690 /* h_TossStuff_r: Toss anything in the host structure (the host or
691 * clients marked for deletion. Called from h_Release_r ONLY.
692 * To be called, there must be no holds, and either host->deleted
693 * or host->clientDeleted must be set.
696 h_TossStuff_r(register struct host *host)
698 register struct client **cp, *client;
701 /* if somebody still has this host held */
702 for (i = 0; (i < h_maxSlots) && (!(host)->holds[i]); i++);
706 /* if somebody still has this host locked */
707 if (h_NBLock_r(host) != 0) {
710 ("Warning: h_TossStuff_r failed; Host %s:%d was locked.\n",
711 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
717 /* ASSUMPTION: rxi_FreeConnection() does not yield */
718 for (cp = &host->FirstClient; (client = *cp);) {
719 if ((host->hostFlags & HOSTDELETED) || client->deleted) {
720 if (client->refCount) {
723 ("Warning: Host %s:%d client %x refcount %d while deleting.\n",
724 afs_inet_ntoa_r(host->host, hoststr),
725 ntohs(host->port), client, client->refCount));
727 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val) {
728 free(client->CPS.prlist_val);
729 client->CPS.prlist_val = NULL;
731 client->CPS.prlist_len = 0;
733 rx_SetSpecific(client->tcon, rxcon_client_key, (void *)0);
735 CurrentConnections--;
742 /* We've just cleaned out all the deleted clients; clear the flag */
743 host->hostFlags &= ~CLIENTDELETED;
745 if (host->hostFlags & HOSTDELETED) {
746 register struct h_hashChain **hp, *th;
747 register struct rx_connection *rxconn;
749 struct AddrPort hostAddrPort;
752 if (host->Console & 1)
754 if ((rxconn = host->callback_rxcon)) {
755 host->callback_rxcon = (struct rx_connection *)0;
757 * If rx_DestroyConnection calls h_FreeConnection we will
758 * deadlock on the host_glock_mutex. Work around the problem
759 * by unhooking the client from the connection before
760 * destroying the connection.
762 client = rx_GetSpecific(rxconn, rxcon_client_key);
763 if (client && client->tcon == rxconn)
765 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
766 rx_DestroyConnection(rxconn);
768 if (host->hcps.prlist_val)
769 free(host->hcps.prlist_val);
770 host->hcps.prlist_val = NULL;
771 host->hcps.prlist_len = 0;
772 DeleteAllCallBacks_r(host, 1);
773 host->hostFlags &= ~RESETDONE; /* just to be safe */
775 /* if alternate addresses do not exist */
776 if (!(host->interface)) {
777 for (hp = &hostHashTable[h_HashIndex(host->host)]; (th = *hp);
780 if (th->hostPtr == host) {
782 h_DeleteList_r(host);
789 /* delete all hash entries for the UUID */
790 uuidp = &host->interface->uuid;
791 for (hp = &hostUuidHashTable[h_UuidHashIndex(uuidp)]; (th = *hp);
794 if (th->hostPtr == host) {
800 /* delete all hash entries for alternate addresses */
801 assert(host->interface->numberOfInterfaces > 0);
802 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
803 hostAddrPort = host->interface->interface[i];
805 for (hp = &hostHashTable[h_HashIndex(hostAddrPort.addr)]; (th = *hp);
808 if (th->hostPtr == host) {
815 free(host->interface);
816 host->interface = NULL;
817 h_DeleteList_r(host); /* remove host from global host List */
819 } /* if alternate address exists */
824 /* Called by rx when a server connection disappears */
826 h_FreeConnection(struct rx_connection *tcon)
828 register struct client *client;
830 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
833 if (client->tcon == tcon)
834 client->tcon = (struct rx_connection *)0;
838 } /*h_FreeConnection */
841 /* h_Enumerate: Calls (*proc)(host, held, param) for at least each host in the
842 * system at the start of the enumeration (perhaps more). Hosts may be deleted
843 * (have delete flag set); ditto for clients. (*proc) is always called with
844 * host h_held(). The hold state of the host with respect to this lwp is passed
845 * to (*proc) as the param held. The proc should return 0 if the host should be
846 * released, 1 if it should be held after enumeration.
849 h_Enumerate(int (*proc) (), char *param)
851 register struct host *host, **list;
853 register int i, count;
856 if (hostCount == 0) {
860 list = (struct host **)malloc(hostCount * sizeof(struct host *));
862 ViceLog(0, ("Failed malloc in h_Enumerate\n"));
865 held = (int *)malloc(hostCount * sizeof(int));
867 ViceLog(0, ("Failed malloc in h_Enumerate\n"));
870 for (count = 0, host = hostList; host; host = host->next, count++) {
872 if (!(held[count] = h_Held_r(host)))
875 assert(count == hostCount);
877 for (i = 0; i < count; i++) {
878 held[i] = (*proc) (list[i], held[i], param);
880 h_Release(list[i]); /* this might free up the host */
886 /* h_Enumerate_r (revised):
887 * Calls (*proc)(host, held, param) for each host in hostList, starting
889 * Hosts may be deleted (have delete flag set); ditto for clients.
890 * (*proc) is always called with
891 * host h_held() and the global host lock (H_LOCK) locked.The hold state of the
892 * host with respect to this lwp is passed to (*proc) as the param held.
893 * The proc should return 0 if the host should be released, 1 if it should
894 * be held after enumeration.
897 h_Enumerate_r(int (*proc) (), struct host *enumstart, char *param)
899 register struct host *host, *next;
900 register int held, nheld;
902 if (hostCount == 0) {
905 if (!(held = h_Held_r(host)))
907 for (host = enumstart; host; host = next, held = nheld) {
908 held = (*proc) (host, held, param);
910 if (next && !(nheld = h_Held_r(next)))
913 h_Release_r(host); /* this might free up the host */
917 /* inserts a new HashChain structure corresponding to this UUID */
919 hashInsertUuid_r(struct afsUUID *uuid, struct host *host)
922 struct h_hashChain *chain;
924 /* hash into proper bucket */
925 index = h_UuidHashIndex(uuid);
927 /* insert into beginning of list for this bucket */
928 chain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
930 ViceLog(0, ("Failed malloc in hashInsertUuid_r\n"));
934 chain->hostPtr = host;
935 chain->next = hostUuidHashTable[index];
936 hostUuidHashTable[index] = chain;
940 /* inserts a new HashChain structure corresponding to this address */
942 hashInsert_r(afs_uint32 addr, afs_uint16 port, struct host *host)
945 struct h_hashChain *chain;
947 /* hash into proper bucket */
948 index = h_HashIndex(addr);
950 /* insert into beginning of list for this bucket */
951 chain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
953 ViceLog(0, ("Failed malloc in hashInsert_r\n"));
956 chain->hostPtr = host;
957 chain->next = hostHashTable[index];
960 hostHashTable[index] = chain;
965 * This is called with host locked and held. At this point, the
966 * hostHashTable should not be having entries for the alternate
967 * interfaces. This function has to insert these entries in the
970 * All addresses are in network byte order.
973 addInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
978 struct Interface *interface;
981 assert(host->interface);
983 ViceLog(125, ("addInterfaceAddr : host %x addr %x:%d\n", host->host, addr, ntohs(port)));
986 * Make sure this address is on the list of known addresses
989 number = host->interface->numberOfInterfaces;
990 for (i = 0, found = 0; i < number && !found; i++) {
991 if (host->interface->interface[i].addr == addr &&
992 host->interface->interface[i].port == port)
996 interface = (struct Interface *)
997 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * number));
999 ViceLog(0, ("Failed malloc in addInterfaceAddr_r\n"));
1002 interface->numberOfInterfaces = number + 1;
1003 interface->uuid = host->interface->uuid;
1004 for (i = 0; i < number; i++)
1005 interface->interface[i] = host->interface->interface[i];
1006 interface->interface[number].addr = addr;
1007 interface->interface[number].port = port;
1008 free(host->interface);
1009 host->interface = interface;
1013 * Create a hash table entry for this address
1015 hashInsert_r(addr, port, host);
1021 /* Host is returned held */
1023 h_GetHost_r(struct rx_connection *tcon)
1026 struct host *oldHost;
1029 struct interfaceAddr interf;
1030 int interfValid = 0;
1031 struct Identity *identP = NULL;
1034 char hoststr[16], hoststr2[16];
1036 struct rx_connection *cb_conn = NULL;
1038 caps.Capabilities_val = NULL;
1040 haddr = rxr_HostOf(tcon);
1041 hport = rxr_PortOf(tcon);
1043 if (caps.Capabilities_val)
1044 free(caps.Capabilities_val);
1045 caps.Capabilities_val = NULL;
1046 caps.Capabilities_len = 0;
1049 host = h_Lookup_r(haddr, hport, &held);
1050 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
1051 if (host && !identP && !(host->Console & 1)) {
1052 /* This is a new connection, and we already have a host
1053 * structure for this address. Verify that the identity
1054 * of the caller matches the identity in the host structure.
1057 if (!(host->hostFlags & ALTADDR)) {
1058 /* Another thread is doing initialization */
1063 ("Host %s:%d starting h_Lookup again\n",
1064 afs_inet_ntoa_r(host->host, hoststr),
1065 ntohs(host->port)));
1068 host->hostFlags &= ~ALTADDR;
1069 cb_conn = host->callback_rxcon;
1070 rx_GetConnection(cb_conn);
1073 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1074 if (code == RXGEN_OPCODE)
1075 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1076 rx_PutConnection(cb_conn);
1079 if (code == RXGEN_OPCODE) {
1080 identP = (struct Identity *)malloc(sizeof(struct Identity));
1082 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1086 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1087 /* The host on this connection was unable to respond to
1088 * the WhoAreYou. We will treat this as a new connection
1089 * from the existing host. The worst that can happen is
1090 * that we maintain some extra callback state information */
1091 if (host->interface) {
1093 ("Host %s:%d used to support WhoAreYou, deleting.\n",
1094 afs_inet_ntoa_r(host->host, hoststr),
1095 ntohs(host->port)));
1096 host->hostFlags |= HOSTDELETED;
1103 } else if (code == 0) {
1105 identP = (struct Identity *)malloc(sizeof(struct Identity));
1107 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1111 identP->uuid = interf.uuid;
1112 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1113 /* Check whether the UUID on this connection matches
1114 * the UUID in the host structure. If they don't match
1115 * then this is not the same host as before. */
1116 if (!host->interface
1117 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid)) {
1119 ("Host %s:%d has changed its identity, deleting.\n",
1120 afs_inet_ntoa_r(host->host, hoststr), host->port));
1121 host->hostFlags |= HOSTDELETED;
1129 afs_inet_ntoa_r(host->host, hoststr);
1131 ("CB: WhoAreYou failed for %s:%d, error %d\n", hoststr,
1132 ntohs(host->port), code));
1133 host->hostFlags |= VENUSDOWN;
1135 if (caps.Capabilities_val
1136 && (caps.Capabilities_val[0] & CAPABILITY_ERRORTRANS))
1137 host->hostFlags |= HERRORTRANS;
1139 host->hostFlags &= ~(HERRORTRANS);
1140 host->hostFlags |= ALTADDR;
1143 if (!(host->hostFlags & ALTADDR)) {
1144 /* another thread is doing the initialisation */
1146 ("Host %s:%d waiting for host-init to complete\n",
1147 afs_inet_ntoa_r(host->host, hoststr),
1148 ntohs(host->port)));
1154 ("Host %s:%d starting h_Lookup again\n",
1155 afs_inet_ntoa_r(host->host, hoststr),
1156 ntohs(host->port)));
1159 /* We need to check whether the identity in the host structure
1160 * matches the identity on the connection. If they don't match
1161 * then treat this a new host. */
1162 if (!(host->Console & 1)
1163 && ((!identP->valid && host->interface)
1164 || (identP->valid && !host->interface)
1166 && !afs_uuid_equal(&identP->uuid,
1167 &host->interface->uuid)))) {
1168 char uuid1[128], uuid2[128];
1170 afsUUID_to_string(&identP->uuid, uuid1, 127);
1171 if (host->interface)
1172 afsUUID_to_string(&host->interface->uuid, uuid2, 127);
1174 ("CB: new identity for host %s:%d, deleting(%x %x %s %s)\n",
1175 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1176 identP->valid, host->interface,
1177 identP->valid ? uuid1 : "",
1178 host->interface ? uuid2 : ""));
1180 /* The host in the cache is not the host for this connection */
1181 host->hostFlags |= HOSTDELETED;
1188 host = h_Alloc_r(tcon); /* returned held and locked */
1189 h_gethostcps_r(host, FT_ApproxTime());
1190 if (!(host->Console & 1)) {
1192 cb_conn = host->callback_rxcon;
1193 rx_GetConnection(cb_conn);
1196 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1197 if (code == RXGEN_OPCODE)
1198 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1199 rx_PutConnection(cb_conn);
1202 if (code == RXGEN_OPCODE) {
1205 (struct Identity *)malloc(sizeof(struct Identity));
1210 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1215 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1217 ("Host %s:%d does not support WhoAreYou.\n",
1218 afs_inet_ntoa_r(host->host, hoststr),
1219 ntohs(host->port)));
1221 } else if (code == 0) {
1224 (struct Identity *)malloc(sizeof(struct Identity));
1229 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1234 identP->uuid = interf.uuid;
1236 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1238 ("WhoAreYou success on %s:%d\n",
1239 afs_inet_ntoa_r(host->host, hoststr),
1240 ntohs(host->port)));
1242 if (code == 0 && !identP->valid) {
1243 cb_conn = host->callback_rxcon;
1244 rx_GetConnection(cb_conn);
1246 code = RXAFSCB_InitCallBackState(cb_conn);
1247 rx_PutConnection(cb_conn);
1250 } else if (code == 0) {
1251 oldHost = h_LookupUuid_r(&identP->uuid);
1255 if (!(held = h_Held_r(oldHost)))
1259 if (oldHost->interface) {
1260 afsUUID uuid = oldHost->interface->uuid;
1261 cb_conn = host->callback_rxcon;
1262 rx_GetConnection(cb_conn);
1264 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1265 rx_PutConnection(cb_conn);
1268 if (code && MultiProbeAlternateAddress_r(oldHost)) {
1276 /* The old host is either does not have a Uuid,
1277 * is not responding to Probes,
1278 * or does not have a matching Uuid.
1280 oldHost->hostFlags |= HOSTDELETED;
1281 h_Unlock_r(oldHost);
1282 h_Release_r(oldHost);
1287 /* This is a new address for an existing host. Update
1288 * the list of interfaces for the existing host and
1289 * delete the host structure we just allocated. */
1291 ("CB: new addr %s:%d for old host %s:%d\n",
1292 afs_inet_ntoa_r(host->host, hoststr),
1293 ntohs(host->port), afs_inet_ntoa_r(oldHost->host,
1295 ntohs(oldHost->port)));
1296 addInterfaceAddr_r(oldHost, haddr, hport);
1297 host->hostFlags |= HOSTDELETED;
1302 /* This really is a new host */
1303 hashInsertUuid_r(&identP->uuid, host);
1304 cb_conn = host->callback_rxcon;
1305 rx_GetConnection(cb_conn);
1308 RXAFSCB_InitCallBackState3(cb_conn,
1310 rx_PutConnection(cb_conn);
1315 ("InitCallBackState3 success on %s:%d\n",
1316 afs_inet_ntoa_r(host->host, hoststr),
1317 ntohs(host->port)));
1318 assert(interfValid == 1);
1319 initInterfaceAddr_r(host, &interf);
1324 afs_inet_ntoa_r(host->host, hoststr);
1326 ("CB: RCallBackConnectBack failed for %s:%d\n",
1327 hoststr, ntohs(host->port)));
1328 host->hostFlags |= VENUSDOWN;
1330 host->hostFlags |= RESETDONE;
1333 if (caps.Capabilities_val
1334 && (caps.Capabilities_val[0] & CAPABILITY_ERRORTRANS))
1335 host->hostFlags |= HERRORTRANS;
1337 host->hostFlags &= ~(HERRORTRANS);
1338 host->hostFlags |= ALTADDR; /* host structure initialization complete */
1341 if (caps.Capabilities_val)
1342 free(caps.Capabilities_val);
1343 caps.Capabilities_val = NULL;
1344 caps.Capabilities_len = 0;
1350 static char localcellname[PR_MAXNAMELEN + 1];
1351 char local_realms[AFS_NUM_LREALMS][AFS_REALM_SZ];
1352 int num_lrealms = -1;
1358 afsconf_GetLocalCell(confDir, localcellname, PR_MAXNAMELEN);
1359 if (num_lrealms == -1) {
1361 for (i=0; i<AFS_NUM_LREALMS; i++) {
1362 if (afs_krb_get_lrealm(local_realms[i], i) != 0 /*KSUCCESS*/)
1368 ("afs_krb_get_lrealm failed, using %s.\n",
1370 strncpy(local_realms[0], localcellname, AFS_REALM_SZ);
1376 /* initialize the rest of the local realms to nullstring for debugging */
1377 for (; i<AFS_NUM_LREALMS; i++)
1378 local_realms[i][0] = '\0';
1380 rxcon_ident_key = rx_KeyCreate((rx_destructor_t) free);
1381 rxcon_client_key = rx_KeyCreate((rx_destructor_t) 0);
1382 #ifdef AFS_PTHREAD_ENV
1383 assert(pthread_mutex_init(&host_glock_mutex, NULL) == 0);
1384 #endif /* AFS_PTHREAD_ENV */
1388 MapName_r(char *aname, char *acell, afs_int32 * aval)
1393 afs_int32 anamelen, cnamelen;
1397 anamelen = strlen(aname);
1398 if (anamelen >= PR_MAXNAMELEN)
1399 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
1401 lnames.namelist_len = 1;
1402 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
1403 lids.idlist_len = 0;
1404 lids.idlist_val = NULL;
1406 cnamelen = strlen(acell);
1408 if (afs_is_foreign_ticket_name(aname, "", acell, localcellname)) {
1410 ("MapName: cell is foreign. cell=%s, localcell=%s, localrealms={%s,%s,%s,%s}\n",
1411 acell, localcellname, local_realms[0],local_realms[1],local_realms[2],local_realms[3]));
1412 if ((anamelen + cnamelen + 1) >= PR_MAXNAMELEN) {
1414 ("MapName: Name too long, using AnonymousID for %s@%s\n",
1416 *aval = AnonymousID;
1419 foreign = 1; /* attempt cross-cell authentication */
1420 tname = (char *)malloc(PR_MAXNAMELEN);
1422 ViceLog(0, ("Failed malloc in MapName_r\n"));
1425 strcpy(tname, aname);
1426 tname[anamelen] = '@';
1427 strcpy(tname + anamelen + 1, acell);
1428 lnames.namelist_val = (prname *) tname;
1433 code = pr_NameToId(&lnames, &lids);
1436 if (lids.idlist_val) {
1437 *aval = lids.idlist_val[0];
1438 if (*aval == AnonymousID) {
1440 ("MapName: NameToId on %s returns anonymousID\n",
1441 lnames.namelist_val));
1443 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
1446 ("MapName: NameToId on '%s' is unknown\n",
1447 lnames.namelist_val));
1453 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
1461 /* NOTE: this returns the client with a Write lock */
1463 h_ID2Client(afs_int32 vid)
1465 register struct client *client;
1466 register struct host *host;
1469 for (host = hostList; host; host = host->next) {
1470 if (host->hostFlags & HOSTDELETED)
1472 for (client = host->FirstClient; client; client = client->next) {
1473 if (!client->deleted && client->ViceId == vid) {
1476 ObtainWriteLock(&client->lock);
1490 * Called by the server main loop. Returns a h_Held client, which must be
1491 * released later the main loop. Allocates a client if the matching one
1492 * isn't around. The client is returned with its reference count incremented
1493 * by one. The caller must call h_ReleaseClient_r when finished with
1497 h_FindClient_r(struct rx_connection *tcon)
1499 register struct client *client;
1500 register struct host *host;
1501 struct client *oldClient;
1506 #if (64-MAXKTCNAMELEN)
1507 ticket name length != 64
1511 char uname[PR_MAXNAMELEN];
1512 char tcell[MAXKTCREALMLEN];
1515 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
1516 if (client && !client->deleted) {
1518 h_Hold_r(client->host);
1519 if (client->prfail != 2) { /* Could add shared lock on client here */
1520 /* note that we don't have to lock entry in this path to
1521 * ensure CPS is initialized, since we don't call rx_SetSpecific
1522 * until initialization is done, and we only get here if
1523 * rx_GetSpecific located the client structure.
1528 ObtainWriteLock(&client->lock); /* released at end */
1530 } else if (client) {
1534 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
1536 ("FindClient: authenticating connection: authClass=%d\n",
1538 if (authClass == 1) {
1539 /* A bcrypt tickets, no longer supported */
1540 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
1541 viceid = AnonymousID;
1542 expTime = 0x7fffffff;
1543 } else if (authClass == 2) {
1546 /* kerberos ticket */
1547 code = rxkad_GetServerInfo(tcon, /*level */ 0, &expTime,
1548 tname, tinst, tcell, &kvno);
1550 ViceLog(1, ("Failed to get rxkad ticket info\n"));
1551 viceid = AnonymousID;
1552 expTime = 0x7fffffff;
1554 int ilen = strlen(tinst);
1556 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
1557 tname, tinst, tcell, expTime, kvno));
1558 strncpy(uname, tname, sizeof(uname));
1560 if (strlen(uname) + 1 + ilen >= sizeof(uname))
1563 strcat(uname, tinst);
1565 /* translate the name to a vice id */
1566 code = MapName_r(uname, tcell, &viceid);
1570 ("failed to map name=%s, cell=%s -> code=%d\n", uname,
1573 viceid = AnonymousID;
1574 expTime = 0x7fffffff;
1578 viceid = AnonymousID; /* unknown security class */
1579 expTime = 0x7fffffff;
1583 host = h_GetHost_r(tcon); /* Returns it h_Held */
1586 /* First try to find the client structure */
1587 for (client = host->FirstClient; client; client = client->next) {
1588 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
1589 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
1590 if (client->tcon && (client->tcon != tcon)) {
1592 ("*** Vid=%d, sid=%x, tcon=%x, Tcon=%x ***\n",
1593 client->ViceId, client->sid, client->tcon,
1596 (struct client *)rx_GetSpecific(client->tcon,
1599 if (oldClient == client)
1600 rx_SetSpecific(client->tcon, rxcon_client_key,
1604 ("Client-conn mismatch: CL1=%x, CN=%x, CL2=%x\n",
1605 client, client->tcon, oldClient));
1607 client->tcon = (struct rx_connection *)0;
1611 ObtainWriteLock(&client->lock);
1617 /* Still no client structure - get one */
1620 /* Retry to find the client structure */
1621 for (client = host->FirstClient; client; client = client->next) {
1622 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
1623 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
1625 goto retryfirstclient;
1629 ObtainWriteLock(&client->lock);
1630 client->refCount = 1;
1631 client->host = host;
1632 client->next = host->FirstClient;
1633 host->FirstClient = client;
1634 #if FS_STATS_DETAILED
1635 client->InSameNetwork = host->InSameNetwork;
1636 #endif /* FS_STATS_DETAILED */
1637 client->ViceId = viceid;
1638 client->expTime = expTime; /* rx only */
1639 client->authClass = authClass; /* rx only */
1640 client->sid = rxr_CidOf(tcon);
1641 client->VenusEpoch = rxr_GetEpoch(tcon);
1642 client->CPS.prlist_val = 0;
1643 client->CPS.prlist_len = 0;
1645 CurrentConnections++; /* increment number of connections */
1648 client->prfail = fail;
1650 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
1651 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID)) {
1652 free(client->CPS.prlist_val);
1654 client->CPS.prlist_val = NULL;
1655 client->CPS.prlist_len = 0;
1656 client->ViceId = viceid;
1657 client->expTime = expTime;
1659 if (viceid == ANONYMOUSID) {
1660 client->CPS.prlist_len = AnonCPS.prlist_len;
1661 client->CPS.prlist_val = AnonCPS.prlist_val;
1664 code = pr_GetCPS(viceid, &client->CPS);
1669 ("pr_GetCPS failed(%d) for user %d, host %s:%d\n",
1670 code, viceid, afs_inet_ntoa_r(client->host->host,
1672 ntohs(client->host->port)));
1674 /* Although ubik_Call (called by pr_GetCPS) traverses thru
1675 * all protection servers and reevaluates things if no
1676 * sync server or quorum is found we could still end up
1677 * with one of these errors. In such case we would like to
1678 * reevaluate the rpc call to find if there's cps for this
1679 * guy. We treat other errors (except network failures
1680 * ones - i.e. code < 0) as an indication that there is no
1681 * CPS for this host. Ideally we could like to deal this
1682 * problem the other way around (i.e. if code == NOCPS
1683 * ignore else retry next time) but the problem is that
1684 * there're other errors (i.e. EPERM) for which we don't
1685 * want to retry and we don't know the whole code list!
1687 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
1691 /* the disabling of system:administrators is so iffy and has so many
1692 * possible failure modes that we will disable it again */
1693 /* Turn off System:Administrator for safety
1694 * if (AL_IsAMember(SystemId, client->CPS) == 0)
1695 * assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
1698 /* Now, tcon may already be set to a rock, since we blocked with no host
1699 * or client locks set above in pr_GetCPS (XXXX some locking is probably
1700 * required). So, before setting the RPC's rock, we should disconnect
1701 * the RPC from the other client structure's rock.
1703 oldClient = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
1704 if (oldClient && oldClient->tcon == tcon) {
1705 oldClient->tcon = (struct rx_connection *)0;
1706 ViceLog(0, ("FindClient: client %x(%x) already had conn %x (host %x), stolen by client %x(%x)\n",
1707 oldClient, oldClient->sid, tcon,
1708 rx_HostOf(rx_PeerOf(tcon)), client, client->sid));
1709 /* rx_SetSpecific will be done immediately below */
1711 client->tcon = tcon;
1712 rx_SetSpecific(tcon, rxcon_client_key, client);
1713 ReleaseWriteLock(&client->lock);
1717 } /*h_FindClient_r */
1720 h_ReleaseClient_r(struct client *client)
1722 assert(client->refCount > 0);
1729 * Sigh: this one is used to get the client AGAIN within the individual
1730 * server routines. This does not bother h_Holding the host, since
1731 * this is assumed already have been done by the server main loop.
1732 * It does check tokens, since only the server routines can return the
1733 * VICETOKENDEAD error code
1736 GetClient(struct rx_connection *tcon, struct client **cp)
1738 register struct client *client;
1741 *cp = client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
1742 if (client == NULL || client->tcon == NULL) {
1744 ("GetClient: no client in conn %x (host %x), VBUSYING\n",
1745 tcon, rx_HostOf(rx_PeerOf(tcon))));
1749 if (rxr_CidOf(client->tcon) != client->sid) {
1751 ("GetClient: tcon %x tcon sid %d client sid %d\n",
1752 client->tcon, rxr_CidOf(client->tcon), client->sid));
1756 if (!(client && client->tcon && rxr_CidOf(client->tcon) == client->sid)) {
1758 ViceLog(0, ("GetClient: no client in conn %x\n", tcon));
1761 ("GetClient: tcon %x tcon sid %d client sid %d\n",
1762 client->tcon, client->tcon ? rxr_CidOf(client->tcon)
1763 : -1, client->sid));
1766 if (client && client->LastCall > client->expTime && client->expTime) {
1769 ("Token for %s at %s:%d expired %d\n", h_UserName(client),
1770 afs_inet_ntoa_r(client->host->host, hoststr),
1771 ntohs(client->host->port), client->expTime));
1773 return VICETOKENDEAD;
1782 /* Client user name for short term use. Note that this is NOT inexpensive */
1784 h_UserName(struct client *client)
1786 static char User[PR_MAXNAMELEN + 1];
1790 lids.idlist_len = 1;
1791 lids.idlist_val = (afs_int32 *) malloc(1 * sizeof(afs_int32));
1792 if (!lids.idlist_val) {
1793 ViceLog(0, ("Failed malloc in h_UserName\n"));
1796 lnames.namelist_len = 0;
1797 lnames.namelist_val = (prname *) 0;
1798 lids.idlist_val[0] = client->ViceId;
1799 if (pr_IdToName(&lids, &lnames)) {
1800 /* We need to free id we alloced above! */
1801 free(lids.idlist_val);
1802 return "*UNKNOWN USER NAME*";
1804 strncpy(User, lnames.namelist_val[0], PR_MAXNAMELEN);
1805 free(lids.idlist_val);
1806 free(lnames.namelist_val);
1816 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
1817 CEs, CEBlocks, HTs, HTBlocks));
1823 h_PrintClient(register struct host *host, int held, StreamHandle_t * file)
1825 register struct client *client;
1832 if (host->hostFlags & HOSTDELETED) {
1836 (void)afs_snprintf(tmpStr, sizeof tmpStr,
1837 "Host %s:%d down = %d, LastCall %s",
1838 afs_inet_ntoa_r(host->host, hoststr),
1839 ntohs(host->port), (host->hostFlags & VENUSDOWN),
1840 afs_ctime((time_t *) & host->LastCall, tbuffer,
1842 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1843 for (client = host->FirstClient; client; client = client->next) {
1844 if (!client->deleted) {
1846 (void)afs_snprintf(tmpStr, sizeof tmpStr,
1847 " user id=%d, name=%s, sl=%s till %s",
1848 client->ViceId, h_UserName(client),
1850 authClass ? "Authenticated" :
1851 "Not authenticated",
1853 authClass ? afs_ctime((time_t *) & client->
1857 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1859 (void)afs_snprintf(tmpStr, sizeof tmpStr,
1860 " user=%s, no current server connection\n",
1861 h_UserName(client));
1862 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1864 (void)afs_snprintf(tmpStr, sizeof tmpStr, " CPS-%d is [",
1865 client->CPS.prlist_len);
1866 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1867 if (client->CPS.prlist_val) {
1868 for (i = 0; i > client->CPS.prlist_len; i++) {
1869 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
1870 client->CPS.prlist_val[i]);
1871 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1874 sprintf(tmpStr, "]\n");
1875 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1881 } /*h_PrintClient */
1886 * Print a list of clients, with last security level and token value seen,
1896 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
1900 ("Couldn't create client dump file %s\n",
1901 AFSDIR_SERVER_CLNTDUMP_FILEPATH));
1904 now = FT_ApproxTime();
1905 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active users at %s\n",
1906 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
1907 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1908 h_Enumerate(h_PrintClient, (char *)file);
1909 STREAM_REALLYCLOSE(file);
1910 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
1917 h_DumpHost(register struct host *host, int held, StreamHandle_t * file)
1923 (void)afs_snprintf(tmpStr, sizeof tmpStr,
1924 "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 [",
1925 host->host, ntohs(host->port), host->index,
1926 host->cblist, CheckLock(&host->lock), host->LastCall,
1927 host->ActiveCall, (host->hostFlags & VENUSDOWN),
1928 host->hostFlags & HOSTDELETED, host->Console,
1929 host->hostFlags & CLIENTDELETED, host->hcpsfailed,
1931 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1932 if (host->hcps.prlist_val)
1933 for (i = 0; i < host->hcps.prlist_len; i++) {
1934 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
1935 host->hcps.prlist_val[i]);
1936 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1938 sprintf(tmpStr, "] [");
1939 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1940 if (host->interface)
1941 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
1942 sprintf(tmpStr, " %x:%d", host->interface->interface[i].addr,
1943 ntohs(host->interface->interface[i].port));
1944 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1946 sprintf(tmpStr, "] holds: ");
1947 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1949 for (i = 0; i < h_maxSlots; i++) {
1950 sprintf(tmpStr, "%04x", host->holds[i]);
1951 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1953 sprintf(tmpStr, " slot/bit: %d/%d\n", h_holdSlot(), h_holdbit());
1954 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1966 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
1972 ("Couldn't create host dump file %s\n",
1973 AFSDIR_SERVER_HOSTDUMP_FILEPATH));
1976 now = FT_ApproxTime();
1977 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active hosts at %s\n",
1978 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
1979 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1980 h_Enumerate(h_DumpHost, (char *)file);
1981 STREAM_REALLYCLOSE(file);
1982 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
1988 * This counts the number of workstations, the number of active workstations,
1989 * and the number of workstations declared "down" (i.e. not heard from
1990 * recently). An active workstation has received a call since the cutoff
1991 * time argument passed.
1994 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
1996 register struct host *host;
1997 register int num = 0, active = 0, del = 0;
2000 for (host = hostList; host; host = host->next) {
2001 if (!(host->hostFlags & HOSTDELETED)) {
2003 if (host->ActiveCall > cutofftime)
2005 if (host->hostFlags & VENUSDOWN)
2017 } /*h_GetWorkStats */
2020 /*------------------------------------------------------------------------
2021 * PRIVATE h_ClassifyAddress
2024 * Given a target IP address and a candidate IP address (both
2025 * in host byte order), classify the candidate into one of three
2026 * buckets in relation to the target by bumping the counters passed
2030 * a_targetAddr : Target address.
2031 * a_candAddr : Candidate address.
2032 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
2033 * addresses are either in the same network
2034 * or the same subnet.
2035 * a_diffSubnetP : ...when the candidate is in a different
2037 * a_diffNetworkP : ...when the candidate is in a different
2044 * The target and candidate addresses are both in host byte
2045 * order, NOT network byte order, when passed in.
2049 *------------------------------------------------------------------------*/
2052 h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
2053 afs_int32 * a_sameNetOrSubnetP, afs_int32 * a_diffSubnetP,
2054 afs_int32 * a_diffNetworkP)
2055 { /*h_ClassifyAddress */
2057 afs_uint32 targetNet;
2058 afs_uint32 targetSubnet;
2060 afs_uint32 candSubnet;
2063 * Put bad values into the subnet info to start with.
2065 targetSubnet = (afs_uint32) 0;
2066 candSubnet = (afs_uint32) 0;
2069 * Pull out the network and subnetwork numbers from the target
2070 * and candidate addresses. We can short-circuit this whole
2071 * affair if the target and candidate addresses are not of the
2074 if (IN_CLASSA(a_targetAddr)) {
2075 if (!(IN_CLASSA(a_candAddr))) {
2076 (*a_diffNetworkP)++;
2079 targetNet = a_targetAddr & IN_CLASSA_NET;
2080 candNet = a_candAddr & IN_CLASSA_NET;
2081 if (IN_SUBNETA(a_targetAddr))
2082 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
2083 if (IN_SUBNETA(a_candAddr))
2084 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
2085 } else if (IN_CLASSB(a_targetAddr)) {
2086 if (!(IN_CLASSB(a_candAddr))) {
2087 (*a_diffNetworkP)++;
2090 targetNet = a_targetAddr & IN_CLASSB_NET;
2091 candNet = a_candAddr & IN_CLASSB_NET;
2092 if (IN_SUBNETB(a_targetAddr))
2093 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
2094 if (IN_SUBNETB(a_candAddr))
2095 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
2096 } /*Class B target */
2097 else if (IN_CLASSC(a_targetAddr)) {
2098 if (!(IN_CLASSC(a_candAddr))) {
2099 (*a_diffNetworkP)++;
2102 targetNet = a_targetAddr & IN_CLASSC_NET;
2103 candNet = a_candAddr & IN_CLASSC_NET;
2106 * Note that class C addresses can't have subnets,
2107 * so we leave the defaults untouched.
2109 } /*Class C target */
2111 targetNet = a_targetAddr;
2112 candNet = a_candAddr;
2113 } /*Class D address */
2116 * Now, simply compare the extracted net and subnet values for
2117 * the two addresses (which at this point are known to be of the
2120 if (targetNet == candNet) {
2121 if (targetSubnet == candSubnet)
2122 (*a_sameNetOrSubnetP)++;
2126 (*a_diffNetworkP)++;
2128 } /*h_ClassifyAddress */
2131 /*------------------------------------------------------------------------
2132 * EXPORTED h_GetHostNetStats
2135 * Iterate through the host table, and classify each (non-deleted)
2136 * host entry into ``proximity'' categories (same net or subnet,
2137 * different subnet, different network).
2140 * a_numHostsP : Set to total number of (non-deleted) hosts.
2141 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
2142 * a_diffSubnetP : Set to # hosts on diff subnet as server.
2143 * a_diffNetworkP : Set to # hosts on diff network as server.
2149 * We only count non-deleted hosts. The storage pointed to by our
2150 * parameters is zeroed upon entry.
2154 *------------------------------------------------------------------------*/
2157 h_GetHostNetStats(afs_int32 * a_numHostsP, afs_int32 * a_sameNetOrSubnetP,
2158 afs_int32 * a_diffSubnetP, afs_int32 * a_diffNetworkP)
2159 { /*h_GetHostNetStats */
2161 register struct host *hostP; /*Ptr to current host entry */
2162 register afs_uint32 currAddr_HBO; /*Curr host addr, host byte order */
2165 * Clear out the storage pointed to by our parameters.
2167 *a_numHostsP = (afs_int32) 0;
2168 *a_sameNetOrSubnetP = (afs_int32) 0;
2169 *a_diffSubnetP = (afs_int32) 0;
2170 *a_diffNetworkP = (afs_int32) 0;
2173 for (hostP = hostList; hostP; hostP = hostP->next) {
2174 if (!(hostP->hostFlags & HOSTDELETED)) {
2176 * Bump the number of undeleted host entries found.
2177 * In classifying the current entry's address, make
2178 * sure to first convert to host byte order.
2181 currAddr_HBO = (afs_uint32) ntohl(hostP->host);
2182 h_ClassifyAddress(FS_HostAddr_HBO, currAddr_HBO,
2183 a_sameNetOrSubnetP, a_diffSubnetP,
2185 } /*Only look at non-deleted hosts */
2186 } /*For each host record hashed to this index */
2188 } /*h_GetHostNetStats */
2190 static afs_uint32 checktime;
2191 static afs_uint32 clientdeletetime;
2192 static struct AFSFid zerofid;
2196 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
2197 * Since it can serialize them, and pile up, it should be a separate LWP
2198 * from other events.
2201 CheckHost(register struct host *host, int held)
2203 register struct client *client;
2204 struct rx_connection *cb_conn = NULL;
2207 /* Host is held by h_Enumerate */
2209 for (client = host->FirstClient; client; client = client->next) {
2210 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
2211 client->deleted = 1;
2212 host->hostFlags |= CLIENTDELETED;
2215 if (host->LastCall < checktime) {
2217 cb_conn = host->callback_rxcon;
2218 rx_GetConnection(cb_conn);
2219 if (!(host->hostFlags & HOSTDELETED)) {
2220 if (host->LastCall < clientdeletetime) {
2221 host->hostFlags |= HOSTDELETED;
2222 if (!(host->hostFlags & VENUSDOWN)) {
2223 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
2224 if (host->interface) {
2227 RXAFSCB_InitCallBackState3(cb_conn,
2233 RXAFSCB_InitCallBackState(cb_conn);
2236 host->hostFlags |= ALTADDR; /* alternate addresses valid */
2239 (void)afs_inet_ntoa_r(host->host, hoststr);
2241 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
2242 hoststr, ntohs(host->port)));
2243 host->hostFlags |= VENUSDOWN;
2245 /* Note: it's safe to delete hosts even if they have call
2246 * back state, because break delayed callbacks (called when a
2247 * message is received from the workstation) will always send a
2248 * break all call backs to the workstation if there is no
2253 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
2254 if (host->interface) {
2255 afsUUID uuid = host->interface->uuid;
2257 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
2260 if (MultiProbeAlternateAddress_r(host)) {
2262 (void)afs_inet_ntoa_r(host->host, hoststr);
2264 ("ProbeUuid failed for host %s:%d\n",
2265 hoststr, ntohs(host->port)));
2266 host->hostFlags |= VENUSDOWN;
2271 code = RXAFSCB_Probe(cb_conn);
2275 (void)afs_inet_ntoa_r(host->host, hoststr);
2277 ("Probe failed for host %s:%d\n", hoststr,
2278 ntohs(host->port)));
2279 host->hostFlags |= VENUSDOWN;
2286 rx_PutConnection(cb_conn);
2298 * Set VenusDown for any hosts that have not had a call in 15 minutes and
2299 * don't respond to a probe. Note that VenusDown can only be cleared if
2300 * a message is received from the host (see ServerLWP in file.c).
2301 * Delete hosts that have not had any calls in 1 hour, clients that
2302 * have not had any calls in 15 minutes.
2304 * This routine is called roughly every 5 minutes.
2309 afs_uint32 now = FT_ApproxTime();
2311 memset((char *)&zerofid, 0, sizeof(zerofid));
2313 * Send a probe to the workstation if it hasn't been heard from in
2316 checktime = now - 15 * 60;
2317 clientdeletetime = now - 120 * 60; /* 2 hours ago */
2318 h_Enumerate(CheckHost, NULL);
2323 * This is called with host locked and held. At this point, the
2324 * hostHashTable should not have any entries for the alternate
2325 * interfaces. This function has to insert these entries in the
2328 * The addresses in the interfaceAddr list are in host byte order.
2331 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
2338 struct Interface *interface;
2344 ("initInterfaceAddr : host %x numAddr %d\n", host->host,
2345 interf->numberOfInterfaces));
2347 number = interf->numberOfInterfaces;
2348 myAddr = host->host; /* current interface address */
2349 myPort = host->port; /* current port */
2351 /* validation checks */
2352 if (number < 0 || number > AFS_MAX_INTERFACE_ADDR) {
2354 ("Number of alternate addresses returned is %d\n", number));
2359 * Convert IP addresses to network byte order, and remove for
2360 * duplicate IP addresses from the interface list.
2362 for (i = 0, count = 0, found = 0; i < number; i++) {
2363 interf->addr_in[i] = htonl(interf->addr_in[i]);
2364 for (j = 0; j < count; j++) {
2365 if (interf->addr_in[j] == interf->addr_in[i])
2369 interf->addr_in[count] = interf->addr_in[i];
2370 if (interf->addr_in[count] == myAddr)
2377 * Allocate and initialize an interface structure for this host.
2380 interface = (struct Interface *)
2381 malloc(sizeof(struct Interface) +
2382 (sizeof(struct AddrPort) * (count - 1)));
2384 ViceLog(0, ("Failed malloc in initInterfaceAddr_r\n"));
2387 interface->numberOfInterfaces = count;
2389 interface = (struct Interface *)
2390 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * count));
2392 interface->numberOfInterfaces = count + 1;
2393 interface->interface[count].addr = myAddr;
2394 interface->interface[count].port = myPort;
2396 interface->uuid = interf->uuid;
2397 for (i = 0; i < count; i++) {
2398 interface->interface[i].addr = interf->addr_in[i];
2399 /* We store the port as 7001 because the addresses reported by
2400 * TellMeAboutYourself and WhoAreYou RPCs are only valid if they
2401 * are coming from fully connected hosts (no NAT/PATs)
2403 interface->interface[i].port = htons(7001);
2406 assert(!host->interface);
2407 host->interface = interface;
2409 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
2410 ViceLog(125, ("--- alt address %x:%d\n", host->interface->interface[i].addr,
2411 ntohs(host->interface->interface[i].port)));
2417 /* deleted a HashChain structure for this address and host */
2418 /* returns 1 on success */
2420 hashDelete_r(afs_uint32 addr, afs_uint16 port, struct host *host)
2423 register struct h_hashChain **hp, *th;
2425 for (hp = &hostHashTable[h_HashIndex(addr)]; (th = *hp);) {
2426 assert(th->hostPtr);
2427 if (th->hostPtr == host && th->addr == addr && th->port == port) {
2441 ** prints out all alternate interface address for the host. The 'level'
2442 ** parameter indicates what level of debugging sets this output
2445 printInterfaceAddr(struct host *host, int level)
2448 if (host->interface) {
2449 /* check alternate addresses */
2450 number = host->interface->numberOfInterfaces;
2452 for (i = 0; i < number; i++)
2453 ViceLog(level, ("%x:%d ", host->interface->interface[i].addr,
2454 ntohs(host->interface->interface[i].port)));
2456 ViceLog(level, ("\n"));