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 hostaddr, 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(hostaddr);
622 extern int hostaclRefresh;
625 for (chain = hostHashTable[index]; chain; chain = chain->next) {
626 host = chain->hostPtr;
628 if (!(host->hostFlags & HOSTDELETED) && chain->addr == hostaddr
629 && host->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;
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 hostAddr = host->interface->addr[i];
804 for (hp = &hostHashTable[h_HashIndex(hostAddr)]; (th = *hp);
807 if (th->hostPtr == host) {
814 free(host->interface);
815 host->interface = NULL;
816 h_DeleteList_r(host); /* remove host from global host List */
818 } /* if alternate address exists */
823 /* Called by rx when a server connection disappears */
825 h_FreeConnection(struct rx_connection *tcon)
827 register struct client *client;
829 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
832 if (client->tcon == tcon)
833 client->tcon = (struct rx_connection *)0;
837 } /*h_FreeConnection */
840 /* h_Enumerate: Calls (*proc)(host, held, param) for at least each host in the
841 * system at the start of the enumeration (perhaps more). Hosts may be deleted
842 * (have delete flag set); ditto for clients. (*proc) is always called with
843 * host h_held(). The hold state of the host with respect to this lwp is passed
844 * to (*proc) as the param held. The proc should return 0 if the host should be
845 * released, 1 if it should be held after enumeration.
848 h_Enumerate(int (*proc) (), char *param)
850 register struct host *host, **list;
852 register int i, count;
855 if (hostCount == 0) {
859 list = (struct host **)malloc(hostCount * sizeof(struct host *));
861 ViceLog(0, ("Failed malloc in h_Enumerate\n"));
864 held = (int *)malloc(hostCount * sizeof(int));
866 ViceLog(0, ("Failed malloc in h_Enumerate\n"));
869 for (count = 0, host = hostList; host; host = host->next, count++) {
871 if (!(held[count] = h_Held_r(host)))
874 assert(count == hostCount);
876 for (i = 0; i < count; i++) {
877 held[i] = (*proc) (list[i], held[i], param);
879 h_Release(list[i]); /* this might free up the host */
885 /* h_Enumerate_r (revised):
886 * Calls (*proc)(host, held, param) for each host in hostList, starting
888 * Hosts may be deleted (have delete flag set); ditto for clients.
889 * (*proc) is always called with
890 * host h_held() and the global host lock (H_LOCK) locked.The hold state of the
891 * host with respect to this lwp is passed to (*proc) as the param held.
892 * The proc should return 0 if the host should be released, 1 if it should
893 * be held after enumeration.
896 h_Enumerate_r(int (*proc) (), struct host *enumstart, char *param)
898 register struct host *host;
901 if (hostCount == 0) {
904 for (host = enumstart; host; host = host->next) {
905 if (!(held = h_Held_r(host)))
907 held = (*proc) (host, held, param);
909 h_Release_r(host); /* this might free up the host */
913 /* inserts a new HashChain structure corresponding to this UUID */
915 hashInsertUuid_r(struct afsUUID *uuid, struct host *host)
918 struct h_hashChain *chain;
920 /* hash into proper bucket */
921 index = h_UuidHashIndex(uuid);
923 /* insert into beginning of list for this bucket */
924 chain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
926 ViceLog(0, ("Failed malloc in hashInsertUuid_r\n"));
930 chain->hostPtr = host;
931 chain->next = hostUuidHashTable[index];
932 hostUuidHashTable[index] = chain;
935 /* Host is returned held */
937 h_GetHost_r(struct rx_connection *tcon)
940 struct host *oldHost;
943 struct interfaceAddr interf;
945 struct Identity *identP = NULL;
948 char hoststr[16], hoststr2[16];
950 struct rx_connection *cb_conn = NULL;
952 caps.Capabilities_val = NULL;
954 haddr = rxr_HostOf(tcon);
955 hport = rxr_PortOf(tcon);
957 if (caps.Capabilities_val)
958 free(caps.Capabilities_val);
959 caps.Capabilities_val = NULL;
960 caps.Capabilities_len = 0;
963 host = h_Lookup_r(haddr, hport, &held);
964 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
965 if (host && !identP && !(host->Console & 1)) {
966 /* This is a new connection, and we already have a host
967 * structure for this address. Verify that the identity
968 * of the caller matches the identity in the host structure.
971 if (!(host->hostFlags & ALTADDR)) {
972 /* Another thread is doing initialization */
977 ("Host %s:%d starting h_Lookup again\n",
978 afs_inet_ntoa_r(host->host, hoststr),
982 host->hostFlags &= ~ALTADDR;
983 cb_conn = host->callback_rxcon;
984 rx_GetConnection(cb_conn);
987 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
988 if (code == RXGEN_OPCODE)
989 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
990 rx_PutConnection(cb_conn);
993 if (code == RXGEN_OPCODE) {
994 identP = (struct Identity *)malloc(sizeof(struct Identity));
996 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1000 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1001 /* The host on this connection was unable to respond to
1002 * the WhoAreYou. We will treat this as a new connection
1003 * from the existing host. The worst that can happen is
1004 * that we maintain some extra callback state information */
1005 if (host->interface) {
1007 ("Host %s:%d used to support WhoAreYou, deleting.\n",
1008 afs_inet_ntoa_r(host->host, hoststr),
1009 ntohs(host->port)));
1010 host->hostFlags |= HOSTDELETED;
1017 } else if (code == 0) {
1019 identP = (struct Identity *)malloc(sizeof(struct Identity));
1021 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1025 identP->uuid = interf.uuid;
1026 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1027 /* Check whether the UUID on this connection matches
1028 * the UUID in the host structure. If they don't match
1029 * then this is not the same host as before. */
1030 if (!host->interface
1031 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid)) {
1033 ("Host %s:%d has changed its identity, deleting.\n",
1034 afs_inet_ntoa_r(host->host, hoststr), host->port));
1035 host->hostFlags |= HOSTDELETED;
1043 afs_inet_ntoa_r(host->host, hoststr);
1045 ("CB: WhoAreYou failed for %s:%d, error %d\n", hoststr,
1046 ntohs(host->port), code));
1047 host->hostFlags |= VENUSDOWN;
1049 if (caps.Capabilities_val
1050 && (caps.Capabilities_val[0] & CAPABILITY_ERRORTRANS))
1051 host->hostFlags |= HERRORTRANS;
1053 host->hostFlags &= ~(HERRORTRANS);
1054 host->hostFlags |= ALTADDR;
1057 if (!(host->hostFlags & ALTADDR)) {
1058 /* another thread is doing the initialisation */
1060 ("Host %s:%d waiting for host-init to complete\n",
1061 afs_inet_ntoa_r(host->host, hoststr),
1062 ntohs(host->port)));
1068 ("Host %s:%d starting h_Lookup again\n",
1069 afs_inet_ntoa_r(host->host, hoststr),
1070 ntohs(host->port)));
1073 /* We need to check whether the identity in the host structure
1074 * matches the identity on the connection. If they don't match
1075 * then treat this a new host. */
1076 if (!(host->Console & 1)
1077 && ((!identP->valid && host->interface)
1078 || (identP->valid && !host->interface)
1080 && !afs_uuid_equal(&identP->uuid,
1081 &host->interface->uuid)))) {
1082 char uuid1[128], uuid2[128];
1084 afsUUID_to_string(&identP->uuid, uuid1, 127);
1085 if (host->interface)
1086 afsUUID_to_string(&host->interface->uuid, uuid2, 127);
1088 ("CB: new identity for host %s:%d, deleting(%x %x %s %s)\n",
1089 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1090 identP->valid, host->interface,
1091 identP->valid ? uuid1 : "",
1092 host->interface ? uuid2 : ""));
1094 /* The host in the cache is not the host for this connection */
1095 host->hostFlags |= HOSTDELETED;
1102 host = h_Alloc_r(tcon); /* returned held and locked */
1103 h_gethostcps_r(host, FT_ApproxTime());
1104 if (!(host->Console & 1)) {
1106 cb_conn = host->callback_rxcon;
1107 rx_GetConnection(cb_conn);
1110 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1111 if (code == RXGEN_OPCODE)
1112 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1113 rx_PutConnection(cb_conn);
1116 if (code == RXGEN_OPCODE) {
1119 (struct Identity *)malloc(sizeof(struct Identity));
1124 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1129 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1131 ("Host %s:%d does not support WhoAreYou.\n",
1132 afs_inet_ntoa_r(host->host, hoststr),
1133 ntohs(host->port)));
1135 } else if (code == 0) {
1138 (struct Identity *)malloc(sizeof(struct Identity));
1143 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1148 identP->uuid = interf.uuid;
1150 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1152 ("WhoAreYou success on %s:%d\n",
1153 afs_inet_ntoa_r(host->host, hoststr),
1154 ntohs(host->port)));
1156 if (code == 0 && !identP->valid) {
1157 cb_conn = host->callback_rxcon;
1158 rx_GetConnection(cb_conn);
1160 code = RXAFSCB_InitCallBackState(cb_conn);
1161 rx_PutConnection(cb_conn);
1164 } else if (code == 0) {
1165 oldHost = h_LookupUuid_r(&identP->uuid);
1167 /* This is a new address for an existing host. Update
1168 * the list of interfaces for the existing host and
1169 * delete the host structure we just allocated. */
1170 if (!(held = h_Held_r(oldHost)))
1174 ("CB: new addr %s:%d for old host %s:%d\n",
1175 afs_inet_ntoa_r(host->host, hoststr),
1176 ntohs(host->port), afs_inet_ntoa_r(oldHost->host,
1178 ntohs(oldHost->port)));
1179 host->hostFlags |= HOSTDELETED;
1183 addInterfaceAddr_r(host, haddr);
1185 /* This really is a new host */
1186 hashInsertUuid_r(&identP->uuid, host);
1187 cb_conn = host->callback_rxcon;
1188 rx_GetConnection(cb_conn);
1191 RXAFSCB_InitCallBackState3(cb_conn,
1193 rx_PutConnection(cb_conn);
1198 ("InitCallBackState3 success on %s:%d\n",
1199 afs_inet_ntoa_r(host->host, hoststr),
1200 ntohs(host->port)));
1201 assert(interfValid == 1);
1202 initInterfaceAddr_r(host, &interf);
1207 afs_inet_ntoa_r(host->host, hoststr);
1209 ("CB: RCallBackConnectBack failed for %s:%d\n",
1210 hoststr, ntohs(host->port)));
1211 host->hostFlags |= VENUSDOWN;
1213 host->hostFlags |= RESETDONE;
1216 if (caps.Capabilities_val
1217 && (caps.Capabilities_val[0] & CAPABILITY_ERRORTRANS))
1218 host->hostFlags |= HERRORTRANS;
1220 host->hostFlags &= ~(HERRORTRANS);
1221 host->hostFlags |= ALTADDR; /* host structure iniatilisation complete */
1224 if (caps.Capabilities_val)
1225 free(caps.Capabilities_val);
1226 caps.Capabilities_val = NULL;
1227 caps.Capabilities_len = 0;
1233 static char localcellname[PR_MAXNAMELEN + 1];
1234 char local_realm[AFS_REALM_SZ] = "";
1240 afsconf_GetLocalCell(confDir, localcellname, PR_MAXNAMELEN);
1241 if (!local_realm[0]) {
1242 if (afs_krb_get_lrealm(local_realm, 0) != 0 /*KSUCCESS*/) {
1244 ("afs_krb_get_lrealm failed, using %s.\n",
1246 strcpy(local_realm, localcellname);
1249 rxcon_ident_key = rx_KeyCreate((rx_destructor_t) free);
1250 rxcon_client_key = rx_KeyCreate((rx_destructor_t) 0);
1251 #ifdef AFS_PTHREAD_ENV
1252 assert(pthread_mutex_init(&host_glock_mutex, NULL) == 0);
1253 #endif /* AFS_PTHREAD_ENV */
1257 MapName_r(char *aname, char *acell, afs_int32 * aval)
1262 afs_int32 anamelen, cnamelen;
1266 anamelen = strlen(aname);
1267 if (anamelen >= PR_MAXNAMELEN)
1268 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
1270 lnames.namelist_len = 1;
1271 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
1272 lids.idlist_len = 0;
1273 lids.idlist_val = NULL;
1275 cnamelen = strlen(acell);
1277 if (strcasecmp(local_realm, acell)
1278 && strcasecmp(localcellname, acell)) {
1280 ("MapName: cell is foreign. cell=%s, localcell=%s, localrealm=%s\n",
1281 acell, localcellname, local_realm));
1282 if ((anamelen + cnamelen + 1) >= PR_MAXNAMELEN) {
1284 ("MapName: Name too long, using AnonymousID for %s@%s\n",
1286 *aval = AnonymousID;
1289 foreign = 1; /* attempt cross-cell authentication */
1290 tname = (char *)malloc(PR_MAXNAMELEN);
1292 ViceLog(0, ("Failed malloc in MapName_r\n"));
1295 strcpy(tname, aname);
1296 tname[anamelen] = '@';
1297 strcpy(tname + anamelen + 1, acell);
1298 lnames.namelist_val = (prname *) tname;
1303 code = pr_NameToId(&lnames, &lids);
1306 if (lids.idlist_val) {
1307 *aval = lids.idlist_val[0];
1308 if (*aval == AnonymousID) {
1310 ("MapName: NameToId on %s returns anonymousID\n",
1311 lnames.namelist_val));
1313 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
1316 ("MapName: NameToId on '%s' is unknown\n",
1317 lnames.namelist_val));
1323 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
1331 /* NOTE: this returns the client with a Write lock */
1333 h_ID2Client(afs_int32 vid)
1335 register struct client *client;
1336 register struct host *host;
1339 for (host = hostList; host; host = host->next) {
1340 if (host->hostFlags & HOSTDELETED)
1342 for (client = host->FirstClient; client; client = client->next) {
1343 if (!client->deleted && client->ViceId == vid) {
1346 ObtainWriteLock(&client->lock);
1360 * Called by the server main loop. Returns a h_Held client, which must be
1361 * released later the main loop. Allocates a client if the matching one
1362 * isn't around. The client is returned with its reference count incremented
1363 * by one. The caller must call h_ReleaseClient_r when finished with
1367 h_FindClient_r(struct rx_connection *tcon)
1369 register struct client *client;
1370 register struct host *host;
1371 struct client *oldClient;
1376 #if (64-MAXKTCNAMELEN)
1377 ticket name length != 64
1381 char uname[PR_MAXNAMELEN];
1382 char tcell[MAXKTCREALMLEN];
1385 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
1386 if (client && !client->deleted) {
1388 h_Hold_r(client->host);
1389 if (client->prfail != 2) { /* Could add shared lock on client here */
1390 /* note that we don't have to lock entry in this path to
1391 * ensure CPS is initialized, since we don't call rx_SetSpecific
1392 * until initialization is done, and we only get here if
1393 * rx_GetSpecific located the client structure.
1398 ObtainWriteLock(&client->lock); /* released at end */
1400 } else if (client) {
1404 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
1406 ("FindClient: authenticating connection: authClass=%d\n",
1408 if (authClass == 1) {
1409 /* A bcrypt tickets, no longer supported */
1410 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
1411 viceid = AnonymousID;
1412 expTime = 0x7fffffff;
1413 } else if (authClass == 2) {
1416 /* kerberos ticket */
1417 code = rxkad_GetServerInfo(tcon, /*level */ 0, &expTime,
1418 tname, tinst, tcell, &kvno);
1420 ViceLog(1, ("Failed to get rxkad ticket info\n"));
1421 viceid = AnonymousID;
1422 expTime = 0x7fffffff;
1424 int ilen = strlen(tinst);
1426 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
1427 tname, tinst, tcell, expTime, kvno));
1428 strncpy(uname, tname, sizeof(uname));
1430 if (strlen(uname) + 1 + ilen >= sizeof(uname))
1433 strcat(uname, tinst);
1435 /* translate the name to a vice id */
1436 code = MapName_r(uname, tcell, &viceid);
1440 ("failed to map name=%s, cell=%s -> code=%d\n", uname,
1443 viceid = AnonymousID;
1444 expTime = 0x7fffffff;
1448 viceid = AnonymousID; /* unknown security class */
1449 expTime = 0x7fffffff;
1453 host = h_GetHost_r(tcon); /* Returns it h_Held */
1455 /* First try to find the client structure */
1456 for (client = host->FirstClient; client; client = client->next) {
1457 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
1458 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
1459 if (client->tcon && (client->tcon != tcon)) {
1461 ("*** Vid=%d, sid=%x, tcon=%x, Tcon=%x ***\n",
1462 client->ViceId, client->sid, client->tcon,
1465 (struct client *)rx_GetSpecific(client->tcon,
1468 if (oldClient == client)
1469 rx_SetSpecific(client->tcon, rxcon_client_key,
1473 ("Client-conn mismatch: CL1=%x, CN=%x, CL2=%x\n",
1474 client, client->tcon, oldClient));
1476 client->tcon = (struct rx_connection *)0;
1480 ObtainWriteLock(&client->lock);
1486 /* Still no client structure - get one */
1489 ObtainWriteLock(&client->lock);
1490 client->refCount = 1;
1491 client->host = host;
1492 client->next = host->FirstClient;
1493 host->FirstClient = client;
1494 #if FS_STATS_DETAILED
1495 client->InSameNetwork = host->InSameNetwork;
1496 #endif /* FS_STATS_DETAILED */
1497 client->ViceId = viceid;
1498 client->expTime = expTime; /* rx only */
1499 client->authClass = authClass; /* rx only */
1500 client->sid = rxr_CidOf(tcon);
1501 client->VenusEpoch = rxr_GetEpoch(tcon);
1502 client->CPS.prlist_val = 0;
1503 client->CPS.prlist_len = 0;
1504 CurrentConnections++; /* increment number of connections */
1507 client->prfail = fail;
1509 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
1510 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID)) {
1511 free(client->CPS.prlist_val);
1513 client->CPS.prlist_val = NULL;
1514 client->CPS.prlist_len = 0;
1515 client->ViceId = viceid;
1516 client->expTime = expTime;
1518 if (viceid == ANONYMOUSID) {
1519 client->CPS.prlist_len = AnonCPS.prlist_len;
1520 client->CPS.prlist_val = AnonCPS.prlist_val;
1523 code = pr_GetCPS(viceid, &client->CPS);
1528 ("pr_GetCPS failed(%d) for user %d, host %s:%d\n",
1529 code, viceid, afs_inet_ntoa_r(client->host->host,
1531 ntohs(client->host->port)));
1533 /* Although ubik_Call (called by pr_GetCPS) traverses thru
1534 * all protection servers and reevaluates things if no
1535 * sync server or quorum is found we could still end up
1536 * with one of these errors. In such case we would like to
1537 * reevaluate the rpc call to find if there's cps for this
1538 * guy. We treat other errors (except network failures
1539 * ones - i.e. code < 0) as an indication that there is no
1540 * CPS for this host. Ideally we could like to deal this
1541 * problem the other way around (i.e. if code == NOCPS
1542 * ignore else retry next time) but the problem is that
1543 * there're other errors (i.e. EPERM) for which we don't
1544 * want to retry and we don't know the whole code list!
1546 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
1550 /* the disabling of system:administrators is so iffy and has so many
1551 * possible failure modes that we will disable it again */
1552 /* Turn off System:Administrator for safety
1553 * if (AL_IsAMember(SystemId, client->CPS) == 0)
1554 * assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
1557 /* Now, tcon may already be set to a rock, since we blocked with no host
1558 * or client locks set above in pr_GetCPS (XXXX some locking is probably
1559 * required). So, before setting the RPC's rock, we should disconnect
1560 * the RPC from the other client structure's rock.
1562 oldClient = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
1563 if (oldClient && oldClient->tcon == tcon) {
1564 oldClient->tcon = (struct rx_connection *)0;
1565 ViceLog(0, ("FindClient: client %x(%x) already had conn %x (host %x), stolen by client %x(%x)\n",
1566 oldClient, oldClient->sid, tcon,
1567 rx_HostOf(rx_PeerOf(tcon)), client, client->sid));
1568 /* rx_SetSpecific will be done immediately below */
1570 client->tcon = tcon;
1571 rx_SetSpecific(tcon, rxcon_client_key, client);
1572 ReleaseWriteLock(&client->lock);
1576 } /*h_FindClient_r */
1579 h_ReleaseClient_r(struct client *client)
1581 assert(client->refCount > 0);
1588 * Sigh: this one is used to get the client AGAIN within the individual
1589 * server routines. This does not bother h_Holding the host, since
1590 * this is assumed already have been done by the server main loop.
1591 * It does check tokens, since only the server routines can return the
1592 * VICETOKENDEAD error code
1595 GetClient(struct rx_connection *tcon, struct client **cp)
1597 register struct client *client;
1600 *cp = client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
1601 if (client == NULL || client->tcon == NULL) {
1603 ("GetClient: no client in conn %x (host %x), VBUSYING\n",
1604 tcon, rx_HostOf(rx_PeerOf(tcon))));
1608 if (rxr_CidOf(client->tcon) != client->sid) {
1610 ("GetClient: tcon %x tcon sid %d client sid %d\n",
1611 client->tcon, rxr_CidOf(client->tcon), client->sid));
1615 if (!(client && client->tcon && rxr_CidOf(client->tcon) == client->sid)) {
1617 ViceLog(0, ("GetClient: no client in conn %x\n", tcon));
1620 ("GetClient: tcon %x tcon sid %d client sid %d\n",
1621 client->tcon, client->tcon ? rxr_CidOf(client->tcon)
1622 : -1, client->sid));
1625 if (client && client->LastCall > client->expTime && client->expTime) {
1628 ("Token for %s at %s:%d expired %d\n", h_UserName(client),
1629 afs_inet_ntoa_r(client->host->host, hoststr),
1630 ntohs(client->host->port), client->expTime));
1632 return VICETOKENDEAD;
1641 /* Client user name for short term use. Note that this is NOT inexpensive */
1643 h_UserName(struct client *client)
1645 static char User[PR_MAXNAMELEN + 1];
1649 lids.idlist_len = 1;
1650 lids.idlist_val = (afs_int32 *) malloc(1 * sizeof(afs_int32));
1651 if (!lids.idlist_val) {
1652 ViceLog(0, ("Failed malloc in h_UserName\n"));
1655 lnames.namelist_len = 0;
1656 lnames.namelist_val = (prname *) 0;
1657 lids.idlist_val[0] = client->ViceId;
1658 if (pr_IdToName(&lids, &lnames)) {
1659 /* We need to free id we alloced above! */
1660 free(lids.idlist_val);
1661 return "*UNKNOWN USER NAME*";
1663 strncpy(User, lnames.namelist_val[0], PR_MAXNAMELEN);
1664 free(lids.idlist_val);
1665 free(lnames.namelist_val);
1675 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
1676 CEs, CEBlocks, HTs, HTBlocks));
1682 h_PrintClient(register struct host *host, int held, StreamHandle_t * file)
1684 register struct client *client;
1691 if (host->hostFlags & HOSTDELETED) {
1695 (void)afs_snprintf(tmpStr, sizeof tmpStr,
1696 "Host %s:%d down = %d, LastCall %s",
1697 afs_inet_ntoa_r(host->host, hoststr),
1698 ntohs(host->port), (host->hostFlags & VENUSDOWN),
1699 afs_ctime((time_t *) & host->LastCall, tbuffer,
1701 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1702 for (client = host->FirstClient; client; client = client->next) {
1703 if (!client->deleted) {
1705 (void)afs_snprintf(tmpStr, sizeof tmpStr,
1706 " user id=%d, name=%s, sl=%s till %s",
1707 client->ViceId, h_UserName(client),
1709 authClass ? "Authenticated" :
1710 "Not authenticated",
1712 authClass ? afs_ctime((time_t *) & client->
1716 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1718 (void)afs_snprintf(tmpStr, sizeof tmpStr,
1719 " user=%s, no current server connection\n",
1720 h_UserName(client));
1721 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1723 (void)afs_snprintf(tmpStr, sizeof tmpStr, " CPS-%d is [",
1724 client->CPS.prlist_len);
1725 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1726 if (client->CPS.prlist_val) {
1727 for (i = 0; i > client->CPS.prlist_len; i++) {
1728 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
1729 client->CPS.prlist_val[i]);
1730 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1733 sprintf(tmpStr, "]\n");
1734 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1740 } /*h_PrintClient */
1745 * Print a list of clients, with last security level and token value seen,
1755 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
1759 ("Couldn't create client dump file %s\n",
1760 AFSDIR_SERVER_CLNTDUMP_FILEPATH));
1763 now = FT_ApproxTime();
1764 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active users at %s\n",
1765 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
1766 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1767 h_Enumerate(h_PrintClient, (char *)file);
1768 STREAM_REALLYCLOSE(file);
1769 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
1776 h_DumpHost(register struct host *host, int held, StreamHandle_t * file)
1782 (void)afs_snprintf(tmpStr, sizeof tmpStr,
1783 "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 [",
1784 host->host, ntohs(host->port), host->index,
1785 host->cblist, CheckLock(&host->lock), host->LastCall,
1786 host->ActiveCall, (host->hostFlags & VENUSDOWN),
1787 host->hostFlags & HOSTDELETED, host->Console,
1788 host->hostFlags & CLIENTDELETED, host->hcpsfailed,
1790 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1791 if (host->hcps.prlist_val)
1792 for (i = 0; i < host->hcps.prlist_len; i++) {
1793 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
1794 host->hcps.prlist_val[i]);
1795 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1797 sprintf(tmpStr, "] [");
1798 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1799 if (host->interface)
1800 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
1801 sprintf(tmpStr, " %x", host->interface->addr[i]);
1802 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1804 sprintf(tmpStr, "] holds: ");
1805 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1807 for (i = 0; i < h_maxSlots; i++) {
1808 sprintf(tmpStr, "%04x", host->holds[i]);
1809 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1811 sprintf(tmpStr, " slot/bit: %d/%d\n", h_holdSlot(), h_holdbit());
1812 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1824 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
1830 ("Couldn't create host dump file %s\n",
1831 AFSDIR_SERVER_HOSTDUMP_FILEPATH));
1834 now = FT_ApproxTime();
1835 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active hosts at %s\n",
1836 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
1837 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
1838 h_Enumerate(h_DumpHost, (char *)file);
1839 STREAM_REALLYCLOSE(file);
1840 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
1846 * This counts the number of workstations, the number of active workstations,
1847 * and the number of workstations declared "down" (i.e. not heard from
1848 * recently). An active workstation has received a call since the cutoff
1849 * time argument passed.
1852 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
1854 register struct host *host;
1855 register int num = 0, active = 0, del = 0;
1858 for (host = hostList; host; host = host->next) {
1859 if (!(host->hostFlags & HOSTDELETED)) {
1861 if (host->ActiveCall > cutofftime)
1863 if (host->hostFlags & VENUSDOWN)
1875 } /*h_GetWorkStats */
1878 /*------------------------------------------------------------------------
1879 * PRIVATE h_ClassifyAddress
1882 * Given a target IP address and a candidate IP address (both
1883 * in host byte order), classify the candidate into one of three
1884 * buckets in relation to the target by bumping the counters passed
1888 * a_targetAddr : Target address.
1889 * a_candAddr : Candidate address.
1890 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
1891 * addresses are either in the same network
1892 * or the same subnet.
1893 * a_diffSubnetP : ...when the candidate is in a different
1895 * a_diffNetworkP : ...when the candidate is in a different
1902 * The target and candidate addresses are both in host byte
1903 * order, NOT network byte order, when passed in.
1907 *------------------------------------------------------------------------*/
1910 h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
1911 afs_int32 * a_sameNetOrSubnetP, afs_int32 * a_diffSubnetP,
1912 afs_int32 * a_diffNetworkP)
1913 { /*h_ClassifyAddress */
1915 afs_uint32 targetNet;
1916 afs_uint32 targetSubnet;
1918 afs_uint32 candSubnet;
1921 * Put bad values into the subnet info to start with.
1923 targetSubnet = (afs_uint32) 0;
1924 candSubnet = (afs_uint32) 0;
1927 * Pull out the network and subnetwork numbers from the target
1928 * and candidate addresses. We can short-circuit this whole
1929 * affair if the target and candidate addresses are not of the
1932 if (IN_CLASSA(a_targetAddr)) {
1933 if (!(IN_CLASSA(a_candAddr))) {
1934 (*a_diffNetworkP)++;
1937 targetNet = a_targetAddr & IN_CLASSA_NET;
1938 candNet = a_candAddr & IN_CLASSA_NET;
1939 if (IN_SUBNETA(a_targetAddr))
1940 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
1941 if (IN_SUBNETA(a_candAddr))
1942 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
1943 } else if (IN_CLASSB(a_targetAddr)) {
1944 if (!(IN_CLASSB(a_candAddr))) {
1945 (*a_diffNetworkP)++;
1948 targetNet = a_targetAddr & IN_CLASSB_NET;
1949 candNet = a_candAddr & IN_CLASSB_NET;
1950 if (IN_SUBNETB(a_targetAddr))
1951 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
1952 if (IN_SUBNETB(a_candAddr))
1953 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
1954 } /*Class B target */
1955 else if (IN_CLASSC(a_targetAddr)) {
1956 if (!(IN_CLASSC(a_candAddr))) {
1957 (*a_diffNetworkP)++;
1960 targetNet = a_targetAddr & IN_CLASSC_NET;
1961 candNet = a_candAddr & IN_CLASSC_NET;
1964 * Note that class C addresses can't have subnets,
1965 * so we leave the defaults untouched.
1967 } /*Class C target */
1969 targetNet = a_targetAddr;
1970 candNet = a_candAddr;
1971 } /*Class D address */
1974 * Now, simply compare the extracted net and subnet values for
1975 * the two addresses (which at this point are known to be of the
1978 if (targetNet == candNet) {
1979 if (targetSubnet == candSubnet)
1980 (*a_sameNetOrSubnetP)++;
1984 (*a_diffNetworkP)++;
1986 } /*h_ClassifyAddress */
1989 /*------------------------------------------------------------------------
1990 * EXPORTED h_GetHostNetStats
1993 * Iterate through the host table, and classify each (non-deleted)
1994 * host entry into ``proximity'' categories (same net or subnet,
1995 * different subnet, different network).
1998 * a_numHostsP : Set to total number of (non-deleted) hosts.
1999 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
2000 * a_diffSubnetP : Set to # hosts on diff subnet as server.
2001 * a_diffNetworkP : Set to # hosts on diff network as server.
2007 * We only count non-deleted hosts. The storage pointed to by our
2008 * parameters is zeroed upon entry.
2012 *------------------------------------------------------------------------*/
2015 h_GetHostNetStats(afs_int32 * a_numHostsP, afs_int32 * a_sameNetOrSubnetP,
2016 afs_int32 * a_diffSubnetP, afs_int32 * a_diffNetworkP)
2017 { /*h_GetHostNetStats */
2019 register struct host *hostP; /*Ptr to current host entry */
2020 register afs_uint32 currAddr_HBO; /*Curr host addr, host byte order */
2023 * Clear out the storage pointed to by our parameters.
2025 *a_numHostsP = (afs_int32) 0;
2026 *a_sameNetOrSubnetP = (afs_int32) 0;
2027 *a_diffSubnetP = (afs_int32) 0;
2028 *a_diffNetworkP = (afs_int32) 0;
2031 for (hostP = hostList; hostP; hostP = hostP->next) {
2032 if (!(hostP->hostFlags & HOSTDELETED)) {
2034 * Bump the number of undeleted host entries found.
2035 * In classifying the current entry's address, make
2036 * sure to first convert to host byte order.
2039 currAddr_HBO = (afs_uint32) ntohl(hostP->host);
2040 h_ClassifyAddress(FS_HostAddr_HBO, currAddr_HBO,
2041 a_sameNetOrSubnetP, a_diffSubnetP,
2043 } /*Only look at non-deleted hosts */
2044 } /*For each host record hashed to this index */
2046 } /*h_GetHostNetStats */
2048 static afs_uint32 checktime;
2049 static afs_uint32 clientdeletetime;
2050 static struct AFSFid zerofid;
2054 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
2055 * Since it can serialize them, and pile up, it should be a separate LWP
2056 * from other events.
2059 CheckHost(register struct host *host, int held)
2061 register struct client *client;
2062 struct rx_connection *cb_conn = NULL;
2065 /* Host is held by h_Enumerate */
2067 for (client = host->FirstClient; client; client = client->next) {
2068 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
2069 client->deleted = 1;
2070 host->hostFlags |= CLIENTDELETED;
2073 if (host->LastCall < checktime) {
2075 cb_conn = host->callback_rxcon;
2076 rx_GetConnection(cb_conn);
2077 if (!(host->hostFlags & HOSTDELETED)) {
2078 if (host->LastCall < clientdeletetime) {
2079 host->hostFlags |= HOSTDELETED;
2080 if (!(host->hostFlags & VENUSDOWN)) {
2081 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
2082 if (host->interface) {
2085 RXAFSCB_InitCallBackState3(cb_conn,
2091 RXAFSCB_InitCallBackState(cb_conn);
2094 host->hostFlags |= ALTADDR; /* alternate addresses valid */
2097 (void)afs_inet_ntoa_r(host->host, hoststr);
2099 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
2100 hoststr, ntohs(host->port)));
2101 host->hostFlags |= VENUSDOWN;
2103 /* Note: it's safe to delete hosts even if they have call
2104 * back state, because break delayed callbacks (called when a
2105 * message is received from the workstation) will always send a
2106 * break all call backs to the workstation if there is no
2111 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
2112 if (host->interface) {
2113 afsUUID uuid = host->interface->uuid;
2115 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
2118 if (MultiProbeAlternateAddress_r(host)) {
2120 (void)afs_inet_ntoa_r(host->host, hoststr);
2122 ("ProbeUuid failed for host %s:%d\n",
2123 hoststr, ntohs(host->port)));
2124 host->hostFlags |= VENUSDOWN;
2129 code = RXAFSCB_Probe(cb_conn);
2133 (void)afs_inet_ntoa_r(host->host, hoststr);
2135 ("Probe failed for host %s:%d\n", hoststr,
2136 ntohs(host->port)));
2137 host->hostFlags |= VENUSDOWN;
2144 rx_PutConnection(cb_conn);
2156 * Set VenusDown for any hosts that have not had a call in 15 minutes and
2157 * don't respond to a probe. Note that VenusDown can only be cleared if
2158 * a message is received from the host (see ServerLWP in file.c).
2159 * Delete hosts that have not had any calls in 1 hour, clients that
2160 * have not had any calls in 15 minutes.
2162 * This routine is called roughly every 5 minutes.
2167 afs_uint32 now = FT_ApproxTime();
2169 memset((char *)&zerofid, 0, sizeof(zerofid));
2171 * Send a probe to the workstation if it hasn't been heard from in
2174 checktime = now - 15 * 60;
2175 clientdeletetime = now - 120 * 60; /* 2 hours ago */
2176 h_Enumerate(CheckHost, NULL);
2181 * This is called with host locked and held. At this point, the
2182 * hostHashTable should not be having entries for the alternate
2183 * interfaces. This function has to insert these entries in the
2186 * The addresses in the ineterfaceAddr list are in host byte order.
2189 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
2195 struct Interface *interface;
2201 ("initInterfaceAddr : host %x numAddr %d\n", host->host,
2202 interf->numberOfInterfaces));
2204 number = interf->numberOfInterfaces;
2205 myHost = host->host; /* current interface address */
2207 /* validation checks */
2208 if (number < 0 || number > AFS_MAX_INTERFACE_ADDR) {
2210 ("Number of alternate addresses returned is %d\n", number));
2215 * Convert IP addresses to network byte order, and remove for
2216 * duplicate IP addresses from the interface list.
2218 for (i = 0, count = 0, found = 0; i < number; i++) {
2219 interf->addr_in[i] = htonl(interf->addr_in[i]);
2220 for (j = 0; j < count; j++) {
2221 if (interf->addr_in[j] == interf->addr_in[i])
2225 interf->addr_in[count] = interf->addr_in[i];
2226 if (interf->addr_in[count] == myHost)
2233 * Allocate and initialize an interface structure for this host.
2236 interface = (struct Interface *)
2237 malloc(sizeof(struct Interface) +
2238 (sizeof(afs_int32) * (count - 1)));
2240 ViceLog(0, ("Failed malloc in initInterfaceAddr_r\n"));
2243 interface->numberOfInterfaces = count;
2245 interface = (struct Interface *)
2246 malloc(sizeof(struct Interface) + (sizeof(afs_int32) * count));
2248 interface->numberOfInterfaces = count + 1;
2249 interface->addr[count] = myHost;
2251 interface->uuid = interf->uuid;
2252 for (i = 0; i < count; i++)
2253 interface->addr[i] = interf->addr_in[i];
2255 assert(!host->interface);
2256 host->interface = interface;
2258 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
2259 ViceLog(125, ("--- alt address %x\n", host->interface->addr[i]));
2265 /* inserts a new HashChain structure corresponding to this address */
2267 hashInsert_r(afs_int32 addr, struct host *host)
2270 struct h_hashChain *chain;
2272 /* hash into proper bucket */
2273 index = h_HashIndex(addr);
2275 /* insert into beginning of list for this bucket */
2276 chain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
2278 ViceLog(0, ("Failed malloc in hashInsert_r\n"));
2281 chain->hostPtr = host;
2282 chain->next = hostHashTable[index];
2284 hostHashTable[index] = chain;
2289 * This is called with host locked and held. At this point, the
2290 * hostHashTable should not be having entries for the alternate
2291 * interfaces. This function has to insert these entries in the
2294 * All addresses are in network byte order.
2297 addInterfaceAddr_r(struct host *host, afs_int32 addr)
2302 struct Interface *interface;
2305 assert(host->interface);
2307 ViceLog(125, ("addInterfaceAddr : host %x addr %d\n", host->host, addr));
2310 * Make sure this address is on the list of known addresses
2313 number = host->interface->numberOfInterfaces;
2314 for (i = 0, found = 0; i < number && !found; i++) {
2315 if (host->interface->addr[i] == addr)
2319 interface = (struct Interface *)
2320 malloc(sizeof(struct Interface) + (sizeof(afs_int32) * number));
2322 ViceLog(0, ("Failed malloc in addInterfaceAddr_r\n"));
2325 interface->numberOfInterfaces = number + 1;
2326 interface->uuid = host->interface->uuid;
2327 for (i = 0; i < number; i++)
2328 interface->addr[i] = host->interface->addr[i];
2329 interface->addr[number] = addr;
2330 free(host->interface);
2331 host->interface = interface;
2335 * Create a hash table entry for this address
2337 hashInsert_r(addr, host);
2342 /* deleted a HashChain structure for this address and host */
2343 /* returns 1 on success */
2345 hashDelete_r(afs_int32 addr, struct host *host)
2348 register struct h_hashChain **hp, *th;
2350 for (hp = &hostHashTable[h_HashIndex(addr)]; (th = *hp);) {
2351 assert(th->hostPtr);
2352 if (th->hostPtr == host && th->addr == addr) {
2366 ** prints out all alternate interface address for the host. The 'level'
2367 ** parameter indicates what level of debugging sets this output
2370 printInterfaceAddr(struct host *host, int level)
2373 if (host->interface) {
2374 /* check alternate addresses */
2375 number = host->interface->numberOfInterfaces;
2377 for (i = 0; i < number; i++)
2378 ViceLog(level, ("%x ", host->interface->addr[i]));
2380 ViceLog(level, ("\n"));