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
9 * Portions Copyright (c) 2006 Sine Nomine Associates
12 #include <afsconfig.h>
13 #include <afs/param.h>
25 #include <netinet/in.h>
30 #include <afs/assert.h>
33 #include <afs/afsint.h>
34 #define FSINT_COMMON_XG
35 #include <afs/afscbint.h>
36 #include <afs/rxgen_consts.h>
38 #include <afs/errors.h>
39 #include <afs/ihandle.h>
40 #include <afs/vnode.h>
41 #include <afs/volume.h>
42 #ifdef AFS_ATHENA_STDENV
46 #include <afs/ptclient.h>
47 #include <afs/ptuser.h>
48 #include <afs/prs_fs.h>
50 #include <afs/afsutil.h>
51 #include <afs/com_err.h>
53 #include <afs/cellconfig.h>
55 #include "viced_prototypes.h"
59 #ifdef AFS_DEMAND_ATTACH_FS
60 #include "../util/afsutil_prototypes.h"
61 #include "../tviced/serialize_state.h"
62 #endif /* AFS_DEMAND_ATTACH_FS */
64 #ifdef AFS_PTHREAD_ENV
65 pthread_mutex_t host_glock_mutex;
66 #endif /* AFS_PTHREAD_ENV */
69 extern int CurrentConnections;
71 extern int AnonymousID;
72 extern prlist AnonCPS;
74 extern struct afsconf_dir *confDir; /* config dir object */
75 extern int lwps; /* the max number of server threads */
76 extern afsUUID FS_HostUUID;
79 int CEs = 0; /* active clients */
80 int CEBlocks = 0; /* number of blocks of CEs */
81 struct client *CEFree = 0; /* first free client */
82 struct host *hostList = 0; /* linked list of all hosts */
83 int hostCount = 0; /* number of hosts in hostList */
87 static struct rx_securityClass *sc = NULL;
89 static void h_SetupCallbackConn_r(struct host * host);
90 static int h_threadquota(int);
92 #define CESPERBLOCK 73
93 struct CEBlock { /* block of CESPERBLOCK file entries */
94 struct client entry[CESPERBLOCK];
97 void h_TossStuff_r(register struct host *host);
100 * Make sure the subnet macros have been defined.
103 #define IN_SUBNETA(i) ((((afs_int32)(i))&0x80800000)==0x00800000)
106 #ifndef IN_CLASSA_SUBNET
107 #define IN_CLASSA_SUBNET 0xffff0000
111 #define IN_SUBNETB(i) ((((afs_int32)(i))&0xc0008000)==0x80008000)
114 #ifndef IN_CLASSB_SUBNET
115 #define IN_CLASSB_SUBNET 0xffffff00
119 /* get a new block of CEs and chain it on CEFree */
123 register struct CEBlock *block;
126 block = (struct CEBlock *)malloc(sizeof(struct CEBlock));
128 ViceLog(0, ("Failed malloc in GetCEBlock\n"));
129 ShutDownAndCore(PANIC);
132 for (i = 0; i < (CESPERBLOCK - 1); i++) {
133 Lock_Init(&block->entry[i].lock);
134 block->entry[i].next = &(block->entry[i + 1]);
136 block->entry[CESPERBLOCK - 1].next = 0;
137 Lock_Init(&block->entry[CESPERBLOCK - 1].lock);
138 CEFree = (struct client *)block;
144 /* get the next available CE */
145 static struct client *
148 register struct client *entry;
153 ViceLog(0, ("CEFree NULL in GetCE\n"));
154 ShutDownAndCore(PANIC);
158 CEFree = entry->next;
160 memset(entry, 0, CLIENT_TO_ZERO(entry));
166 /* return an entry to the free list */
168 FreeCE(register struct client *entry)
170 entry->VenusEpoch = 0;
172 entry->next = CEFree;
179 * The HTs and HTBlocks variables were formerly static, but they are
180 * now referenced elsewhere in the FileServer.
182 int HTs = 0; /* active file entries */
183 int HTBlocks = 0; /* number of blocks of HTs */
184 static struct host *HTFree = 0; /* first free file entry */
187 * Hash tables of host pointers. We need two tables, one
188 * to map IP addresses onto host pointers, and another
189 * to map host UUIDs onto host pointers.
191 static struct h_AddrHashChain *hostAddrHashTable[h_HASHENTRIES];
192 static struct h_UuidHashChain *hostUuidHashTable[h_HASHENTRIES];
193 #define h_HashIndex(hostip) (ntohl(hostip) & (h_HASHENTRIES-1))
194 #define h_UuidHashIndex(uuidp) (((int)(afs_uuid_hash(uuidp))) & (h_HASHENTRIES-1))
196 struct HTBlock { /* block of HTSPERBLOCK file entries */
197 struct host entry[h_HTSPERBLOCK];
201 /* get a new block of HTs and chain it on HTFree */
205 register struct HTBlock *block;
207 static int index = 0;
209 if (HTBlocks == h_MAXHOSTTABLES) {
210 ViceLog(0, ("h_MAXHOSTTABLES reached\n"));
211 ShutDownAndCore(PANIC);
214 block = (struct HTBlock *)malloc(sizeof(struct HTBlock));
216 ViceLog(0, ("Failed malloc in GetHTBlock\n"));
217 ShutDownAndCore(PANIC);
219 #ifdef AFS_PTHREAD_ENV
220 for (i = 0; i < (h_HTSPERBLOCK); i++)
221 assert(pthread_cond_init(&block->entry[i].cond, NULL) == 0);
222 #endif /* AFS_PTHREAD_ENV */
223 for (i = 0; i < (h_HTSPERBLOCK); i++)
224 Lock_Init(&block->entry[i].lock);
225 for (i = 0; i < (h_HTSPERBLOCK - 1); i++)
226 block->entry[i].next = &(block->entry[i + 1]);
227 for (i = 0; i < (h_HTSPERBLOCK); i++)
228 block->entry[i].index = index++;
229 block->entry[h_HTSPERBLOCK - 1].next = 0;
230 HTFree = (struct host *)block;
231 hosttableptrs[HTBlocks++] = block->entry;
236 /* get the next available HT */
240 register struct host *entry;
244 assert(HTFree != NULL);
246 HTFree = entry->next;
248 memset(entry, 0, HOST_TO_ZERO(entry));
254 /* return an entry to the free list */
256 FreeHT(register struct host *entry)
258 entry->next = HTFree;
265 hpr_Initialize(struct ubik_client **uclient)
268 struct rx_connection *serverconns[MAXSERVERS];
269 struct rx_securityClass *sc[3];
270 struct afsconf_dir *tdir;
271 struct ktc_token ttoken;
273 struct afsconf_cell info;
277 tdir = afsconf_Open(AFSDIR_SERVER_ETC_DIRPATH);
279 ViceLog(0, ("hpr_Initialize: Could not open configuration directory: %s", AFSDIR_SERVER_ETC_DIRPATH));
283 code = afsconf_GetLocalCell(tdir, cellstr, sizeof(cellstr));
285 ViceLog(0, ("hpr_Initialize: Could not get local cell. [%d]", code));
290 code = afsconf_GetCellInfo(tdir, cellstr, "afsprot", &info);
292 ViceLog(0, ("hpr_Initialize: Could not locate cell %s in %s/%s",
293 cellstr, confDir->name, AFSDIR_CELLSERVDB_FILE));
300 ViceLog(0, ("hpr_Initialize: Could not initialize rx."));
309 /* Most callers use secLevel==1, however, the fileserver uses secLevel==2
310 * to force use of the KeyFile. secLevel == 0 implies -noauth was
312 if ((afsconf_GetLatestKey(tdir, 0, 0) == 0)) {
313 code = afsconf_ClientAuthSecure(tdir, &sc[2], &scIndex);
315 ViceLog(0, ("hpr_Initialize: clientauthsecure returns %d %s (so trying noauth)", code, afs_error_message(code)));
317 scIndex = 0; /* use noauth */
319 /* if there was a problem, an unauthenticated conn is returned */
322 struct ktc_principal sname;
323 strcpy(sname.cell, info.name);
324 sname.instance[0] = 0;
325 strcpy(sname.name, "afs");
326 code = ktc_GetToken(&sname, &ttoken, sizeof(ttoken), NULL);
330 if (ttoken.kvno >= 0 && ttoken.kvno <= 256)
331 /* this is a kerberos ticket, set scIndex accordingly */
334 ViceLog(0, ("hpr_Initialize: funny kvno (%d) in ticket, proceeding", ttoken.kvno));
338 rxkad_NewClientSecurityObject(rxkad_clear, &ttoken.sessionKey,
339 ttoken.kvno, ttoken.ticketLen,
343 if ((scIndex == 0) && (sc[0] == 0))
344 sc[0] = rxnull_NewClientSecurityObject();
346 ViceLog(0, ("hpr_Initialize: Could not get afs tokens, running unauthenticated. [%d]", code));
348 memset(serverconns, 0, sizeof(serverconns)); /* terminate list!!! */
349 for (i = 0; i < info.numServers; i++) {
351 rx_NewConnection(info.hostAddr[i].sin_addr.s_addr,
352 info.hostAddr[i].sin_port, PRSRV, sc[scIndex],
356 code = ubik_ClientInit(serverconns, uclient);
358 ViceLog(0, ("hpr_Initialize: ubik client init failed. [%d]", code));
361 code = rxs_Release(sc[scIndex]);
366 hpr_End(struct ubik_client *uclient)
371 code = ubik_ClientDestroy(uclient);
377 hpr_GetHostCPS(afs_int32 host, prlist *CPS)
379 #ifdef AFS_PTHREAD_ENV
380 register afs_int32 code;
382 struct ubik_client *uclient =
383 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
386 code = hpr_Initialize(&uclient);
388 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
394 code = ubik_PR_GetHostCPS(uclient, 0, host, CPS, &over);
395 if (code != PRSUCCESS)
398 /* do something about this, probably make a new call */
399 /* don't forget there's a hard limit in the interface */
401 "membership list for host id %d exceeds display limit\n",
406 return pr_GetHostCPS(host, CPS);
411 hpr_NameToId(namelist *names, idlist *ids)
413 #ifdef AFS_PTHREAD_ENV
414 register afs_int32 code;
415 register afs_int32 i;
416 struct ubik_client *uclient =
417 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
420 code = hpr_Initialize(&uclient);
422 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
427 for (i = 0; i < names->namelist_len; i++)
428 stolower(names->namelist_val[i]);
429 code = ubik_PR_NameToID(uclient, 0, names, ids);
432 return pr_NameToId(names, ids);
437 hpr_IdToName(idlist *ids, namelist *names)
439 #ifdef AFS_PTHREAD_ENV
440 register afs_int32 code;
441 struct ubik_client *uclient =
442 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
445 code = hpr_Initialize(&uclient);
447 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
452 code = ubik_PR_IDToName(uclient, 0, ids, names);
455 return pr_IdToName(ids, names);
460 hpr_GetCPS(afs_int32 id, prlist *CPS)
462 #ifdef AFS_PTHREAD_ENV
463 register afs_int32 code;
465 struct ubik_client *uclient =
466 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
469 code = hpr_Initialize(&uclient);
471 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
477 code = ubik_PR_GetCPS(uclient, 0, id, CPS, &over);
478 if (code != PRSUCCESS)
481 /* do something about this, probably make a new call */
482 /* don't forget there's a hard limit in the interface */
483 fprintf(stderr, "membership list for id %d exceeds display limit\n",
488 return pr_GetCPS(id, CPS);
492 static short consolePort = 0;
495 h_Lock_r(register struct host *host)
505 * returns 1 if already locked
506 * else returns locks and returns 0
510 h_NBLock_r(register struct host *host)
512 struct Lock *hostLock = &host->lock;
517 if (!(hostLock->excl_locked) && !(hostLock->readers_reading))
518 hostLock->excl_locked = WRITE_LOCK;
522 LOCK_UNLOCK(hostLock);
531 #if FS_STATS_DETAILED
532 /*------------------------------------------------------------------------
533 * PRIVATE h_AddrInSameNetwork
536 * Given a target IP address and a candidate IP address (both
537 * in host byte order), return a non-zero value (1) if the
538 * candidate address is in a different network from the target
542 * a_targetAddr : Target address.
543 * a_candAddr : Candidate address.
546 * 1 if the candidate address is in the same net as the target,
550 * The target and candidate addresses are both in host byte
551 * order, NOT network byte order, when passed in. We return
552 * our value as a character, since that's the type of field in
553 * the host structure, where this info will be stored.
557 *------------------------------------------------------------------------*/
560 h_AddrInSameNetwork(afs_uint32 a_targetAddr, afs_uint32 a_candAddr)
561 { /*h_AddrInSameNetwork */
563 afs_uint32 targetNet;
567 * Pull out the network and subnetwork numbers from the target
568 * and candidate addresses. We can short-circuit this whole
569 * affair if the target and candidate addresses are not of the
572 if (IN_CLASSA(a_targetAddr)) {
573 if (!(IN_CLASSA(a_candAddr))) {
576 targetNet = a_targetAddr & IN_CLASSA_NET;
577 candNet = a_candAddr & IN_CLASSA_NET;
578 } else if (IN_CLASSB(a_targetAddr)) {
579 if (!(IN_CLASSB(a_candAddr))) {
582 targetNet = a_targetAddr & IN_CLASSB_NET;
583 candNet = a_candAddr & IN_CLASSB_NET;
584 } /*Class B target */
585 else if (IN_CLASSC(a_targetAddr)) {
586 if (!(IN_CLASSC(a_candAddr))) {
589 targetNet = a_targetAddr & IN_CLASSC_NET;
590 candNet = a_candAddr & IN_CLASSC_NET;
591 } /*Class C target */
593 targetNet = a_targetAddr;
594 candNet = a_candAddr;
595 } /*Class D address */
598 * Now, simply compare the extracted net values for the two addresses
599 * (which at this point are known to be of the same class)
601 if (targetNet == candNet)
606 } /*h_AddrInSameNetwork */
607 #endif /* FS_STATS_DETAILED */
610 /* Assumptions: called with held host */
612 h_gethostcps_r(register struct host *host, register afs_int32 now)
617 /* wait if somebody else is already doing the getCPS call */
618 while (host->hostFlags & HCPS_INPROGRESS) {
619 slept = 1; /* I did sleep */
620 host->hostFlags |= HCPS_WAITING; /* I am sleeping now */
621 #ifdef AFS_PTHREAD_ENV
622 pthread_cond_wait(&host->cond, &host_glock_mutex);
623 #else /* AFS_PTHREAD_ENV */
624 if ((code = LWP_WaitProcess(&(host->hostFlags))) != LWP_SUCCESS)
625 ViceLog(0, ("LWP_WaitProcess returned %d\n", code));
626 #endif /* AFS_PTHREAD_ENV */
630 host->hostFlags |= HCPS_INPROGRESS; /* mark as CPSCall in progress */
631 if (host->hcps.prlist_val)
632 free(host->hcps.prlist_val); /* this is for hostaclRefresh */
633 host->hcps.prlist_val = NULL;
634 host->hcps.prlist_len = 0;
635 host->cpsCall = slept ? (FT_ApproxTime()) : (now);
638 code = hpr_GetHostCPS(ntohl(host->host), &host->hcps);
643 * Although ubik_Call (called by pr_GetHostCPS) traverses thru all protection servers
644 * and reevaluates things if no sync server or quorum is found we could still end up
645 * with one of these errors. In such case we would like to reevaluate the rpc call to
646 * find if there's cps for this guy. We treat other errors (except network failures
647 * ones - i.e. code < 0) as an indication that there is no CPS for this host. Ideally
648 * we could like to deal this problem the other way around (i.e. if code == NOCPS
649 * ignore else retry next time) but the problem is that there're other errors (i.e.
650 * EPERM) for which we don't want to retry and we don't know the whole code list!
652 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC) {
654 * We would have preferred to use a while loop and try again since ops in protected
655 * acls for this host will fail now but they'll be reevaluated on any subsequent
656 * call. The attempt to wait for a quorum/sync site or network error won't work
657 * since this problems really should only occurs during a complete fileserver
658 * restart. Since the fileserver will start before the ptservers (and thus before
659 * quorums are complete) clients will be utilizing all the fileserver's lwps!!
661 host->hcpsfailed = 1;
663 ("Warning: GetHostCPS failed (%d) for %p (%s:%d); will retry\n",
664 code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
666 host->hcpsfailed = 0;
668 ("gethost: GetHostCPS failed (%d) for %p (%s:%d); ignored\n",
669 code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
671 if (host->hcps.prlist_val)
672 free(host->hcps.prlist_val);
673 host->hcps.prlist_val = NULL;
674 host->hcps.prlist_len = 0; /* Make sure it's zero */
676 host->hcpsfailed = 0;
678 host->hostFlags &= ~HCPS_INPROGRESS;
679 /* signal all who are waiting */
680 if (host->hostFlags & HCPS_WAITING) { /* somebody is waiting */
681 host->hostFlags &= ~HCPS_WAITING;
682 #ifdef AFS_PTHREAD_ENV
683 assert(pthread_cond_broadcast(&host->cond) == 0);
684 #else /* AFS_PTHREAD_ENV */
685 if ((code = LWP_NoYieldSignal(&(host->hostFlags))) != LWP_SUCCESS)
686 ViceLog(0, ("LWP_NoYieldSignal returns %d\n", code));
687 #endif /* AFS_PTHREAD_ENV */
691 /* args in net byte order */
693 h_flushhostcps(register afs_uint32 hostaddr, register afs_uint16 hport)
698 h_Lookup_r(hostaddr, hport, &host);
700 host->hcpsfailed = 1;
709 * Allocate a host. It will be identified by the peer (ip,port) info in the
710 * rx connection provided. The host is returned held and locked
712 #define DEF_ROPCONS 2115
715 h_Alloc_r(register struct rx_connection *r_con)
717 struct servent *serverentry;
720 #if FS_STATS_DETAILED
721 afs_uint32 newHostAddr_HBO; /*New host IP addr, in host byte order */
722 #endif /* FS_STATS_DETAILED */
726 host->host = rxr_HostOf(r_con);
727 host->port = rxr_PortOf(r_con);
729 h_AddHostToAddrHashTable_r(host->host, host->port, host);
731 if (consolePort == 0) { /* find the portal number for console */
732 #if defined(AFS_OSF_ENV)
733 serverentry = getservbyname("ropcons", "");
735 serverentry = getservbyname("ropcons", 0);
738 consolePort = serverentry->s_port;
740 consolePort = htons(DEF_ROPCONS); /* Use a default */
742 if (host->port == consolePort)
744 /* Make a callback channel even for the console, on the off chance that it
745 * makes a request that causes a break call back. It shouldn't. */
746 h_SetupCallbackConn_r(host);
747 now = host->LastCall = host->cpsCall = host->ActiveCall = FT_ApproxTime();
749 host->hcps.prlist_val = NULL;
750 host->hcps.prlist_len = 0;
751 host->interface = NULL;
753 host->hcpsfailed = 0; /* save cycles */
754 h_gethostcps(host); /* do this under host hold/lock */
756 host->FirstClient = NULL;
759 h_InsertList_r(host); /* update global host List */
760 #if FS_STATS_DETAILED
762 * Compare the new host's IP address (in host byte order) with ours
763 * (the File Server's), remembering if they are in the same network.
765 newHostAddr_HBO = (afs_uint32) ntohl(host->host);
766 host->InSameNetwork =
767 h_AddrInSameNetwork(FS_HostAddr_HBO, newHostAddr_HBO);
768 #endif /* FS_STATS_DETAILED */
775 /* Make a callback channel even for the console, on the off chance that it
776 * makes a request that causes a break call back. It shouldn't. */
778 h_SetupCallbackConn_r(struct host * host)
781 sc = rxnull_NewClientSecurityObject();
782 host->callback_rxcon =
783 rx_NewConnection(host->host, host->port, 1, sc, 0);
784 rx_SetConnDeadTime(host->callback_rxcon, 50);
785 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
789 * Lookup a host given an IP address and UDP port number.
790 * hostaddr and hport are in network order
791 * hostaddr and hport are in network order
792 * On return, refCount is incremented.
795 h_Lookup_r(afs_uint32 haddr, afs_uint16 hport, struct host **hostp)
798 struct host *host = NULL;
799 struct h_AddrHashChain *chain;
800 int index = h_HashIndex(haddr);
801 extern int hostaclRefresh;
804 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
805 host = chain->hostPtr;
807 if (!(host->hostFlags & HOSTDELETED) && chain->addr == haddr
808 && chain->port == hport) {
809 if ((host->hostFlags & HWHO_INPROGRESS) &&
810 h_threadquota(host->lock.num_waiting)) {
816 if (host->hostFlags & HOSTDELETED) {
823 now = FT_ApproxTime(); /* always evaluate "now" */
824 if (host->hcpsfailed || (host->cpsCall + hostaclRefresh < now)) {
826 * Every hostaclRefresh period (def 2 hrs) get the new
827 * membership list for the host. Note this could be the
828 * first time that the host is added to a group. Also
829 * here we also retry on previous legitimate hcps failures.
831 * If we get here refCount is elevated.
833 h_gethostcps_r(host, now);
843 /* Lookup a host given its UUID. */
845 h_LookupUuid_r(afsUUID * uuidp)
847 struct host *host = 0;
848 struct h_UuidHashChain *chain;
849 int index = h_UuidHashIndex(uuidp);
851 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
852 host = chain->hostPtr;
854 if (!(host->hostFlags & HOSTDELETED) && host->interface
855 && afs_uuid_equal(&host->interface->uuid, uuidp)) {
863 /* h_TossStuff_r: Toss anything in the host structure (the host or
864 * clients marked for deletion. Called from h_Release_r ONLY.
865 * To be called, there must be no holds, and either host->deleted
866 * or host->clientDeleted must be set.
869 h_TossStuff_r(register struct host *host)
871 register struct client **cp, *client;
873 /* if somebody still has this host held */
874 if (host->refCount > 0)
877 /* if somebody still has this host locked */
878 if (h_NBLock_r(host) != 0) {
881 ("Warning: h_TossStuff_r failed; Host %" AFS_PTR_FMT " (%s:%d) was locked.\n",
882 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
888 /* ASSUMPTION: rxi_FreeConnection() does not yield */
889 for (cp = &host->FirstClient; (client = *cp);) {
890 if ((host->hostFlags & HOSTDELETED) || client->deleted) {
892 ObtainWriteLockNoBlock(&client->lock, code);
896 ("Warning: h_TossStuff_r failed: Host %p (%s:%d) "
897 "client %p was locked.\n",
898 host, afs_inet_ntoa_r(host->host, hoststr),
899 ntohs(host->port), client));
903 if (client->refCount) {
906 ("Warning: h_TossStuff_r failed: Host %p (%s:%d) "
907 "client %p refcount %d.\n",
908 host, afs_inet_ntoa_r(host->host, hoststr),
909 ntohs(host->port), client, client->refCount));
910 /* This is the same thing we do if the host is locked */
911 ReleaseWriteLock(&client->lock);
914 client->CPS.prlist_len = 0;
915 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
916 free(client->CPS.prlist_val);
917 client->CPS.prlist_val = NULL;
918 CurrentConnections--;
920 ReleaseWriteLock(&client->lock);
926 /* We've just cleaned out all the deleted clients; clear the flag */
927 host->hostFlags &= ~CLIENTDELETED;
929 if (host->hostFlags & HOSTDELETED) {
930 register struct rx_connection *rxconn;
931 struct AddrPort hostAddrPort;
934 if (host->Console & 1)
936 if ((rxconn = host->callback_rxcon)) {
937 host->callback_rxcon = (struct rx_connection *)0;
938 rx_DestroyConnection(rxconn);
940 if (host->hcps.prlist_val)
941 free(host->hcps.prlist_val);
942 host->hcps.prlist_val = NULL;
943 host->hcps.prlist_len = 0;
944 DeleteAllCallBacks_r(host, 1);
945 host->hostFlags &= ~RESETDONE; /* just to be safe */
947 /* if alternate addresses do not exist */
948 if (!(host->interface)) {
949 h_DeleteHostFromAddrHashTable_r(host->host, host->port, host);
951 h_DeleteHostFromUuidHashTable_r(host);
952 h_DeleteHostFromAddrHashTable_r(host->host, host->port, host);
953 /* delete the hash entry for each valid alternate addresses */
954 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
955 hostAddrPort = host->interface->interface[i];
957 * if the interface addr/port is the primary, we already
958 * removed it. If the addr/port is not valid, its not
961 if (hostAddrPort.valid &&
962 (host->host != hostAddrPort.addr ||
963 host->port != hostAddrPort.port))
964 h_DeleteHostFromAddrHashTable_r(hostAddrPort.addr, hostAddrPort.port, host);
966 free(host->interface);
967 host->interface = NULL;
968 } /* if alternate address exists */
970 h_DeleteList_r(host); /* remove host from global host List */
977 /* h_Enumerate: Calls (*proc)(host, held, param) for at least each host in the
978 * system at the start of the enumeration (perhaps more). Hosts may be deleted
979 * (have delete flag set); ditto for clients. refCount is always incremented
980 * before (*proc) is called. The param flags is passed to (*proc) as the
981 * param flags, permitting (*proc) to stop the enumeration (BAIL).
983 * Needed? Why not always h_Hold_r and h_Release_r in (*proc), or even -never-
984 * h_Hold_r or h_Release_r in (*proc)?
986 * **The proc should return 0 if the host should be released, 1 if it should
987 * be held after enumeration.
990 h_Enumerate(int (*proc) (struct host*, int, void *), void *param)
992 register struct host *host, **list;
994 register int i, count;
997 if (hostCount == 0) {
1001 list = (struct host **)malloc(hostCount * sizeof(struct host *));
1003 ViceLog(0, ("Failed malloc in h_Enumerate (list)\n"));
1006 flags = (int *)malloc(hostCount * sizeof(int));
1008 ViceLog(0, ("Failed malloc in h_Enumerate (flags)\n"));
1011 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
1015 if (count != hostCount) {
1016 ViceLog(0, ("h_Enumerate found %d of %d hosts\n", count, hostCount));
1017 } else if (host != NULL) {
1018 ViceLog(0, ("h_Enumerate found more than %d hosts\n", hostCount));
1019 ShutDownAndCore(PANIC);
1022 for (i = 0; i < count; i++) {
1023 flags[i] = (*proc) (list[i], flags[i], param);
1024 h_Release_r(list[i]);
1025 /* bail out of the enumeration early */
1026 if (H_ENUMERATE_ISSET_BAIL(flags[i]))
1030 free((void *)flags);
1034 /* h_Enumerate_r (revised):
1035 * Calls (*proc)(host, flags, param) for each host in hostList, starting
1036 * at enumstart. Called only under H_LOCK. Hosts may be deleted (have
1037 * delete flag set); ditto for clients. refCount is always incremented
1038 * before (*proc) is called. The param flags is passed to (*proc) as the
1039 * param flags, permitting (*proc) to stop the enumeration (BAIL).
1041 * Needed? Why not always h_Hold_r and h_Release_r in (*proc), or even -never-
1042 * h_Hold_r or h_Release_r in (*proc)?
1044 * **The proc should return 0 if the host should be released, 1 if it should
1045 * be held after enumeration.
1048 h_Enumerate_r(int (*proc) (struct host *, int, void *),
1049 struct host *enumstart, void *param)
1051 register struct host *host, *next;
1056 if (hostCount == 0) {
1059 h_Hold_r(enumstart);
1060 for (count = 0, host = enumstart; host && count < hostCount; host = next, flags = nflags, count++) {
1062 if (next && !H_ENUMERATE_ISSET_BAIL(flags))
1064 flags = (*proc) (host, flags, param);
1065 if (H_ENUMERATE_ISSET_BAIL(flags)) {
1066 h_Release_r(host); /* this might free up the host */
1069 h_Release_r(host); /* this might free up the host */
1072 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", hostCount));
1073 ShutDownAndCore(PANIC);
1075 } /*h_Enumerate_r */
1078 /* inserts a new HashChain structure corresponding to this UUID */
1080 h_AddHostToUuidHashTable_r(struct afsUUID *uuid, struct host *host)
1083 struct h_UuidHashChain *chain;
1084 char uuid1[128], uuid2[128];
1087 /* hash into proper bucket */
1088 index = h_UuidHashIndex(uuid);
1090 /* don't add the same entry multiple times */
1091 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
1092 if (!chain->hostPtr)
1095 if (chain->hostPtr->interface &&
1096 afs_uuid_equal(&chain->hostPtr->interface->uuid, uuid)) {
1097 if (LogLevel >= 125) {
1098 afsUUID_to_string(&chain->hostPtr->interface->uuid, uuid1,
1100 afsUUID_to_string(uuid, uuid2, 127);
1101 ViceLog(125, ("h_AddHostToUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s) exists as %s:%d (uuid %s)\n",
1103 afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1104 ntohs(chain->hostPtr->port), uuid2));
1110 /* insert into beginning of list for this bucket */
1111 chain = (struct h_UuidHashChain *)malloc(sizeof(struct h_UuidHashChain));
1113 ViceLog(0, ("Failed malloc in h_AddHostToUuidHashTable_r\n"));
1116 chain->hostPtr = host;
1117 chain->next = hostUuidHashTable[index];
1118 hostUuidHashTable[index] = chain;
1121 afsUUID_to_string(uuid, uuid2, 127);
1123 ("h_AddHostToUuidHashTable_r: host %p (%s:%d) added as uuid %s\n",
1124 host, afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1125 ntohs(chain->hostPtr->port), uuid2));
1128 /* deletes a HashChain structure corresponding to this host */
1130 h_DeleteHostFromUuidHashTable_r(struct host *host)
1133 register struct h_UuidHashChain **uhp, *uth;
1137 if (!host->interface)
1140 /* hash into proper bucket */
1141 index = h_UuidHashIndex(&host->interface->uuid);
1143 if (LogLevel >= 125)
1144 afsUUID_to_string(&host->interface->uuid, uuid1, 127);
1145 for (uhp = &hostUuidHashTable[index]; (uth = *uhp); uhp = &uth->next) {
1146 assert(uth->hostPtr);
1147 if (uth->hostPtr == host) {
1149 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d)\n",
1150 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1151 ntohs(host->port)));
1158 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d) not found\n",
1159 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1160 ntohs(host->port)));
1164 /* inserts a new HashChain structure corresponding to this address */
1166 h_AddHostToAddrHashTable_r(afs_uint32 addr, afs_uint16 port, struct host *host)
1169 struct h_AddrHashChain *chain;
1172 /* hash into proper bucket */
1173 index = h_HashIndex(addr);
1175 /* don't add the same address:port pair entry multiple times */
1176 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1177 if (chain->addr == addr && chain->port == port) {
1178 if (chain->hostPtr == host) {
1180 ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) already hashed\n",
1181 host, afs_inet_ntoa_r(chain->addr, hoststr),
1182 ntohs(chain->port)));
1185 if (!(chain->hostPtr->hostFlags & HOSTDELETED)) {
1187 ("h_AddHostToAddrHashTable_r: refusing to hash host %" AFS_PTR_FMT ", %"
1188 AFS_PTR_FMT " (%s:%d) already hashed\n",
1189 host, chain->hostPtr, afs_inet_ntoa_r(chain->addr, hoststr),
1190 ntohs(chain->port)));
1196 /* insert into beginning of list for this bucket */
1197 chain = (struct h_AddrHashChain *)malloc(sizeof(struct h_AddrHashChain));
1199 ViceLog(0, ("Failed malloc in h_AddHostToAddrHashTable_r\n"));
1202 chain->hostPtr = host;
1203 chain->next = hostAddrHashTable[index];
1206 hostAddrHashTable[index] = chain;
1207 ViceLog(125, ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " added as %s:%d\n",
1208 host, afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1212 * This is called with host locked and held.
1213 * It is called to either validate or add an additional interface
1214 * address/port on the specified host.
1216 * All addresses are in network byte order.
1219 addInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1223 struct Interface *interface;
1224 char hoststr[16], hoststr2[16];
1227 assert(host->interface);
1230 * Make sure this address is on the list of known addresses
1233 number = host->interface->numberOfInterfaces;
1234 for (i = 0; i < number; i++) {
1235 if (host->interface->interface[i].addr == addr &&
1236 host->interface->interface[i].port == port) {
1238 ("addInterfaceAddr : found host %" AFS_PTR_FMT " (%s:%d) adding %s:%d%s\n",
1239 host, afs_inet_ntoa_r(host->host, hoststr),
1240 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1241 ntohs(port), host->interface->interface[i].valid ? "" :
1244 if (host->interface->interface[i].valid == 0) {
1245 host->interface->interface[i].valid = 1;
1246 h_AddHostToAddrHashTable_r(addr, port, host);
1252 ViceLog(125, ("addInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) adding %s:%d\n",
1253 host, afs_inet_ntoa_r(host->host, hoststr),
1254 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1257 interface = (struct Interface *)
1258 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * number));
1260 ViceLog(0, ("Failed malloc in addInterfaceAddr_r\n"));
1263 interface->numberOfInterfaces = number + 1;
1264 interface->uuid = host->interface->uuid;
1265 for (i = 0; i < number; i++)
1266 interface->interface[i] = host->interface->interface[i];
1268 /* Add the new valid interface */
1269 interface->interface[number].addr = addr;
1270 interface->interface[number].port = port;
1271 interface->interface[number].valid = 1;
1272 h_AddHostToAddrHashTable_r(addr, port, host);
1273 free(host->interface);
1274 host->interface = interface;
1281 * This is called with host locked and held.
1283 * All addresses are in network byte order.
1286 removeInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1290 struct Interface *interface;
1291 char hoststr[16], hoststr2[16];
1294 assert(host->interface);
1296 ViceLog(125, ("removeInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1297 host, afs_inet_ntoa_r(host->host, hoststr),
1298 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1302 * Make sure this address is on the list of known addresses
1305 interface = host->interface;
1306 number = host->interface->numberOfInterfaces;
1307 for (i = 0; i < number; i++) {
1308 if (interface->interface[i].addr == addr &&
1309 interface->interface[i].port == port) {
1310 if (interface->interface[i].valid)
1311 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1313 for (; i < number; i++) {
1314 interface->interface[i] = interface->interface[i+1];
1316 interface->numberOfInterfaces = number;
1325 * This is called with host locked and held.
1327 * All addresses are in network byte order.
1330 invalidateInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1334 struct Interface *interface;
1335 char hoststr[16], hoststr2[16];
1338 assert(host->interface);
1340 ViceLog(125, ("invalidateInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1341 host, afs_inet_ntoa_r(host->host, hoststr),
1342 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1346 * Make sure this address is on the list of known addresses
1349 interface = host->interface;
1350 number = host->interface->numberOfInterfaces;
1351 for (i = 0; i < number; i++) {
1352 if (interface->interface[i].addr == addr &&
1353 interface->interface[i].port == port) {
1354 if (interface->interface[i].valid) {
1355 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1356 interface->interface[i].valid = 0;
1367 * This is called with host locked and held. This function differs
1368 * from removeInterfaceAddr_r in that it is called when the address
1369 * is being removed from the host regardless of whether or not there
1370 * is an interface list for the host. This function will delete the
1371 * host if there are no addresses left on it.
1373 * All addresses are in network byte order.
1376 removeAddress_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1379 char hoststr[16], hoststr2[16];
1380 struct rx_connection *rxconn;
1382 if (!host->interface || host->interface->numberOfInterfaces == 1) {
1383 if (host->host == addr && host->port == port) {
1385 ("Removing only address for host %" AFS_PTR_FMT " (%s:%d), deleting host.\n",
1386 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1387 host->hostFlags |= HOSTDELETED;
1389 * Do not remove the primary addr/port from the hash table.
1390 * It will be ignored due to the HOSTDELETED flag and will
1391 * be removed when h_TossStuff_r() cleans up the HOSTDELETED
1392 * host. Removing it here will only result in a search for
1393 * the host/addr/port in the hash chain which will fail.
1397 ("Removing address that does not belong to host %" AFS_PTR_FMT " (%s:%d).\n",
1398 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1401 if (host->host == addr && host->port == port) {
1402 removeInterfaceAddr_r(host, addr, port);
1404 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1405 if (host->interface->interface[i].valid) {
1407 ("Removed address for host %" AFS_PTR_FMT " (%s:%d), new primary interface %s:%d.\n",
1408 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1409 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr2),
1410 ntohs(host->interface->interface[i].port)));
1411 host->host = host->interface->interface[i].addr;
1412 host->port = host->interface->interface[i].port;
1413 h_AddHostToAddrHashTable_r(host->host, host->port, host);
1418 if (i == host->interface->numberOfInterfaces) {
1420 ("Removed only address for host %" AFS_PTR_FMT " (%s:%d), no valid alternate interfaces, deleting host.\n",
1421 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1422 host->hostFlags |= HOSTDELETED;
1423 /* addr/port was removed from the hash table */
1427 rxconn = host->callback_rxcon;
1428 host->callback_rxcon = NULL;
1431 rx_DestroyConnection(rxconn);
1436 sc = rxnull_NewClientSecurityObject();
1437 host->callback_rxcon =
1438 rx_NewConnection(host->host, host->port, 1, sc, 0);
1439 rx_SetConnDeadTime(host->callback_rxcon, 50);
1440 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
1443 /* not the primary addr/port, just invalidate it */
1444 invalidateInterfaceAddr_r(host, addr, port);
1451 h_threadquota(int waiting)
1456 } else if (lwps > 32) {
1459 } else if (lwps > 16) {
1469 /* If found, host is returned with refCount incremented */
1471 h_GetHost_r(struct rx_connection *tcon)
1474 struct host *oldHost;
1476 struct interfaceAddr interf;
1477 int interfValid = 0;
1478 struct Identity *identP = NULL;
1481 char hoststr[16], hoststr2[16];
1483 struct rx_connection *cb_conn = NULL;
1484 struct rx_connection *cb_in = NULL;
1486 caps.Capabilities_val = NULL;
1488 haddr = rxr_HostOf(tcon);
1489 hport = rxr_PortOf(tcon);
1492 rx_DestroyConnection(cb_in);
1495 if (caps.Capabilities_val)
1496 free(caps.Capabilities_val);
1497 caps.Capabilities_val = NULL;
1498 caps.Capabilities_len = 0;
1501 if (h_Lookup_r(haddr, hport, &host))
1503 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
1504 if (host && !identP && !(host->Console & 1)) {
1505 /* This is a new connection, and we already have a host
1506 * structure for this address. Verify that the identity
1507 * of the caller matches the identity in the host structure.
1509 if ((host->hostFlags & HWHO_INPROGRESS) &&
1510 h_threadquota(host->lock.num_waiting)) {
1516 if (!(host->hostFlags & ALTADDR) ||
1517 (host->hostFlags & HOSTDELETED)) {
1518 /* Another thread is doing initialization
1519 * or this host was deleted while we
1520 * waited for the lock. */
1523 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1524 host, afs_inet_ntoa_r(host->host, hoststr),
1525 ntohs(host->port)));
1529 host->hostFlags |= HWHO_INPROGRESS;
1530 host->hostFlags &= ~ALTADDR;
1532 /* We received a new connection from an IP address/port
1533 * that is associated with 'host' but the address/port of
1534 * the callback connection does not have to match it.
1535 * If there is a match, we can use the existing callback
1536 * connection to verify the UUID. If they do not match
1537 * we need to use a new callback connection to verify the
1538 * UUID of the incoming caller and perhaps use the old
1539 * callback connection to verify that the old address/port
1543 cb_conn = host->callback_rxcon;
1544 rx_GetConnection(cb_conn);
1546 if (haddr == host->host && hport == host->port) {
1547 /* The existing callback connection matches the
1548 * incoming connection so just use it.
1551 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1552 if (code == RXGEN_OPCODE)
1553 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1555 /* We do not have a match. Create a new connection
1556 * for the new addr/port and use multi_Rx to probe
1557 * both of them simultaneously.
1560 sc = rxnull_NewClientSecurityObject();
1561 cb_in = rx_NewConnection(haddr, hport, 1, sc, 0);
1562 rx_SetConnDeadTime(cb_in, 50);
1563 rx_SetConnHardDeadTime(cb_in, AFS_HARDDEADTIME);
1566 RXAFSCB_TellMeAboutYourself(cb_in, &interf, &caps);
1567 if (code == RXGEN_OPCODE)
1568 code = RXAFSCB_WhoAreYou(cb_in, &interf);
1570 rx_PutConnection(cb_conn);
1573 if ((code == RXGEN_OPCODE) ||
1574 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1575 identP = (struct Identity *)malloc(sizeof(struct Identity));
1577 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1581 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1582 if (cb_in == NULL) {
1583 /* The host on this connection was unable to respond to
1584 * the WhoAreYou. We will treat this as a new connection
1585 * from the existing host. The worst that can happen is
1586 * that we maintain some extra callback state information */
1587 if (host->interface) {
1589 ("Host %" AFS_PTR_FMT " (%s:%d) used to support WhoAreYou, deleting.\n",
1591 afs_inet_ntoa_r(host->host, hoststr),
1592 ntohs(host->port)));
1593 host->hostFlags |= HOSTDELETED;
1594 host->hostFlags &= ~HWHO_INPROGRESS;
1601 /* The incoming connection does not support WhoAreYou but
1602 * the original one might have. Use removeAddress_r() to
1603 * remove this addr/port from the host that was found.
1604 * If there are no more addresses left for the host it
1605 * will be deleted. Then we retry.
1607 removeAddress_r(host, haddr, hport);
1608 host->hostFlags &= ~HWHO_INPROGRESS;
1609 host->hostFlags |= ALTADDR;
1615 } else if (code == 0) {
1617 identP = (struct Identity *)malloc(sizeof(struct Identity));
1619 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1623 identP->uuid = interf.uuid;
1624 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1625 /* Check whether the UUID on this connection matches
1626 * the UUID in the host structure. If they don't match
1627 * then this is not the same host as before. */
1628 if (!host->interface
1629 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid)) {
1632 ("Uuid doesn't match connection (%s:%d).\n",
1633 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport)));
1634 removeAddress_r(host, haddr, hport);
1637 ("Uuid doesn't match host %" AFS_PTR_FMT " (%s:%d).\n",
1638 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1640 removeAddress_r(host, host->host, host->port);
1642 host->hostFlags &= ~HWHO_INPROGRESS;
1643 host->hostFlags |= ALTADDR;
1649 /* the UUID matched the client at the incoming addr/port
1650 * but this is not the address of the active callback
1651 * connection. Try that connection and see if the client
1652 * is still there and if the reported UUID is the same.
1655 afsUUID uuid = host->interface->uuid;
1656 cb_conn = host->callback_rxcon;
1657 rx_GetConnection(cb_conn);
1658 rx_SetConnDeadTime(cb_conn, 2);
1659 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1661 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1663 rx_SetConnDeadTime(cb_conn, 50);
1664 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1665 rx_PutConnection(cb_conn);
1668 /* The primary address is either not responding or
1669 * is not the client we are looking for. Need to
1670 * remove the primary address and add swap in the new
1671 * callback connection, and destroy the old one.
1673 struct rx_connection *rxconn;
1674 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
1676 afs_inet_ntoa_r(host->host, hoststr),
1677 ntohs(host->port),code2));
1680 * make sure we add and then remove. otherwise, we
1681 * might end up with no valid interfaces after the
1682 * remove and the host will have been marked deleted.
1684 addInterfaceAddr_r(host, haddr, hport);
1685 removeInterfaceAddr_r(host, host->host, host->port);
1688 rxconn = host->callback_rxcon;
1689 host->callback_rxcon = cb_in;
1694 * If rx_DestroyConnection calls h_FreeConnection we
1695 * will deadlock on the host_glock_mutex. Work around
1696 * the problem by unhooking the client from the
1697 * connection before destroying the connection.
1699 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
1700 rx_DestroyConnection(rxconn);
1706 /* A callback to the incoming connection address is failing.
1707 * Assume that the addr/port is no longer associated with the host
1708 * returned by h_Lookup_r.
1711 ("CB: WhoAreYou failed for connection (%s:%d) , error %d\n",
1712 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport), code));
1713 removeAddress_r(host, haddr, hport);
1714 host->hostFlags &= ~HWHO_INPROGRESS;
1715 host->hostFlags |= ALTADDR;
1719 rx_DestroyConnection(cb_in);
1724 ("CB: WhoAreYou failed for host %" AFS_PTR_FMT " (%s:%d), error %d\n",
1725 host, afs_inet_ntoa_r(host->host, hoststr),
1726 ntohs(host->port), code));
1727 host->hostFlags |= VENUSDOWN;
1730 if (caps.Capabilities_val
1731 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1732 host->hostFlags |= HERRORTRANS;
1734 host->hostFlags &= ~(HERRORTRANS);
1735 host->hostFlags |= ALTADDR;
1736 host->hostFlags &= ~HWHO_INPROGRESS;
1739 if (!(host->hostFlags & ALTADDR)) {
1740 /* another thread is doing the initialisation */
1742 ("Host %" AFS_PTR_FMT " (%s:%d) waiting for host-init to complete\n",
1743 host, afs_inet_ntoa_r(host->host, hoststr),
1744 ntohs(host->port)));
1748 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1749 host, afs_inet_ntoa_r(host->host, hoststr),
1750 ntohs(host->port)));
1754 /* We need to check whether the identity in the host structure
1755 * matches the identity on the connection. If they don't match
1756 * then treat this a new host. */
1757 if (!(host->Console & 1)
1758 && ((!identP->valid && host->interface)
1759 || (identP->valid && !host->interface)
1761 && !afs_uuid_equal(&identP->uuid,
1762 &host->interface->uuid)))) {
1763 char uuid1[128], uuid2[128];
1765 afsUUID_to_string(&identP->uuid, uuid1, 127);
1766 if (host->interface)
1767 afsUUID_to_string(&host->interface->uuid, uuid2, 127);
1769 ("CB: new identity for host %p (%s:%d), "
1770 "deleting(%x %p %s %s)\n",
1771 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1772 identP->valid, host->interface,
1773 identP->valid ? uuid1 : "no_uuid",
1774 host->interface ? uuid2 : "no_uuid"));
1776 /* The host in the cache is not the host for this connection */
1778 host->hostFlags |= HOSTDELETED;
1784 host = h_Alloc_r(tcon); /* returned held and locked */
1785 h_gethostcps_r(host, FT_ApproxTime());
1786 if (!(host->Console & 1)) {
1788 cb_conn = host->callback_rxcon;
1789 rx_GetConnection(cb_conn);
1790 host->hostFlags |= HWHO_INPROGRESS;
1793 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1794 if (code == RXGEN_OPCODE)
1795 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1796 rx_PutConnection(cb_conn);
1799 if ((code == RXGEN_OPCODE) ||
1800 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1803 (struct Identity *)malloc(sizeof(struct Identity));
1808 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1813 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1815 ("Host %" AFS_PTR_FMT " (%s:%d) does not support WhoAreYou.\n",
1816 host, afs_inet_ntoa_r(host->host, hoststr),
1817 ntohs(host->port)));
1819 } else if (code == 0) {
1822 (struct Identity *)malloc(sizeof(struct Identity));
1827 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1832 identP->uuid = interf.uuid;
1834 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1836 ("WhoAreYou success on host %" AFS_PTR_FMT " (%s:%d)\n",
1837 host, afs_inet_ntoa_r(host->host, hoststr),
1838 ntohs(host->port)));
1840 if (code == 0 && !identP->valid) {
1841 cb_conn = host->callback_rxcon;
1842 rx_GetConnection(cb_conn);
1844 code = RXAFSCB_InitCallBackState(cb_conn);
1845 rx_PutConnection(cb_conn);
1848 } else if (code == 0) {
1849 oldHost = h_LookupUuid_r(&identP->uuid);
1854 if (oldHost->hostFlags & HOSTDELETED) {
1855 h_Unlock_r(oldHost);
1856 h_Release_r(oldHost);
1864 oldHost->hostFlags |= HWHO_INPROGRESS;
1866 if (oldHost->interface) {
1868 afsUUID uuid = oldHost->interface->uuid;
1869 cb_conn = oldHost->callback_rxcon;
1870 rx_GetConnection(cb_conn);
1871 rx_SetConnDeadTime(cb_conn, 2);
1872 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1874 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1876 rx_SetConnDeadTime(cb_conn, 50);
1877 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1878 rx_PutConnection(cb_conn);
1881 /* The primary address is either not responding or
1882 * is not the client we are looking for.
1883 * MultiProbeAlternateAddress_r() will remove the
1884 * alternate interfaces that do not have the same
1886 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
1888 afs_inet_ntoa_r(oldHost->host, hoststr),
1889 ntohs(oldHost->port),code2));
1890 MultiProbeAlternateAddress_r(oldHost);
1897 /* This is a new address for an existing host. Update
1898 * the list of interfaces for the existing host and
1899 * delete the host structure we just allocated. */
1901 /* prevent warnings while manipulating interface lists */
1902 host->hostFlags |= HOSTDELETED;
1904 if (oldHost->host != haddr || oldHost->port != hport) {
1905 struct rx_connection *rxconn;
1908 ("CB: Host %" AFS_PTR_FMT " (%s:%d) has new addr %s:%d\n",
1910 afs_inet_ntoa_r(oldHost->host, hoststr2),
1911 ntohs(oldHost->port),
1912 afs_inet_ntoa_r(haddr, hoststr),
1915 * add then remove. otherwise the host may get marked
1916 * deleted if we removed the only valid address.
1918 addInterfaceAddr_r(oldHost, haddr, hport);
1919 if (probefail || oldHost->host == haddr) {
1921 * The probe failed which means that the old
1922 * address is either unreachable or is not the
1923 * same host we were just contacted by. We will
1924 * also remove addresses if only the port has
1925 * changed because that indicates the client
1928 removeInterfaceAddr_r(oldHost, oldHost->host, oldHost->port);
1931 struct Interface *interface = oldHost->interface;
1932 int number = oldHost->interface->numberOfInterfaces;
1933 for (i = 0; i < number; i++) {
1934 if (interface->interface[i].addr == haddr &&
1935 interface->interface[i].port != hport) {
1937 * We have just been contacted by a client
1938 * that has been seen from behind a NAT
1939 * and at least one other address.
1941 removeInterfaceAddr_r(oldHost, haddr,
1942 interface->interface[i].port);
1947 h_AddHostToAddrHashTable_r(haddr, hport, oldHost);
1948 oldHost->host = haddr;
1949 oldHost->port = hport;
1950 rxconn = oldHost->callback_rxcon;
1951 oldHost->callback_rxcon = host->callback_rxcon;
1952 host->callback_rxcon = rxconn;
1954 /* don't destroy rxconn here; let h_TossStuff_r
1955 * take care of that via h_Release_r below */
1957 host->hostFlags &= ~HWHO_INPROGRESS;
1959 /* release host because it was allocated by h_Alloc_r */
1962 /* the new host is held and locked */
1964 /* This really is a new host */
1965 h_AddHostToUuidHashTable_r(&identP->uuid, host);
1966 cb_conn = host->callback_rxcon;
1967 rx_GetConnection(cb_conn);
1970 RXAFSCB_InitCallBackState3(cb_conn,
1972 rx_PutConnection(cb_conn);
1977 ("InitCallBackState3 success on host %" AFS_PTR_FMT " (%s:%d)\n",
1978 host, afs_inet_ntoa_r(host->host, hoststr),
1979 ntohs(host->port)));
1980 assert(interfValid == 1);
1981 initInterfaceAddr_r(host, &interf);
1987 ("CB: RCallBackConnectBack failed for %" AFS_PTR_FMT " (%s:%d)\n",
1988 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1989 host->hostFlags |= VENUSDOWN;
1992 ("CB: RCallBackConnectBack succeeded for %" AFS_PTR_FMT " (%s:%d)\n",
1993 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1994 host->hostFlags |= RESETDONE;
1997 if (caps.Capabilities_val
1998 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1999 host->hostFlags |= HERRORTRANS;
2001 host->hostFlags &= ~(HERRORTRANS);
2002 host->hostFlags |= ALTADDR; /* host structure initialization complete */
2003 host->hostFlags &= ~HWHO_INPROGRESS;
2008 if (caps.Capabilities_val)
2009 free(caps.Capabilities_val);
2010 caps.Capabilities_val = NULL;
2011 caps.Capabilities_len = 0;
2013 rx_DestroyConnection(cb_in);
2021 static char localcellname[PR_MAXNAMELEN + 1];
2022 char local_realms[AFS_NUM_LREALMS][AFS_REALM_SZ];
2023 int num_lrealms = -1;
2027 h_InitHostPackage(void)
2029 memset(&nulluuid, 0, sizeof(afsUUID));
2030 afsconf_GetLocalCell(confDir, localcellname, PR_MAXNAMELEN);
2031 if (num_lrealms == -1) {
2033 for (i=0; i<AFS_NUM_LREALMS; i++) {
2034 if (afs_krb_get_lrealm(local_realms[i], i) != 0 /*KSUCCESS*/)
2040 ("afs_krb_get_lrealm failed, using %s.\n",
2042 strncpy(local_realms[0], localcellname, AFS_REALM_SZ);
2048 /* initialize the rest of the local realms to nullstring for debugging */
2049 for (; i<AFS_NUM_LREALMS; i++)
2050 local_realms[i][0] = '\0';
2052 rxcon_ident_key = rx_KeyCreate((rx_destructor_t) free);
2053 rxcon_client_key = rx_KeyCreate((rx_destructor_t) 0);
2054 #ifdef AFS_PTHREAD_ENV
2055 assert(pthread_mutex_init(&host_glock_mutex, NULL) == 0);
2056 #endif /* AFS_PTHREAD_ENV */
2060 MapName_r(char *aname, char *acell, afs_int32 * aval)
2065 afs_int32 anamelen, cnamelen;
2069 anamelen = strlen(aname);
2070 if (anamelen >= PR_MAXNAMELEN)
2071 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
2073 lnames.namelist_len = 1;
2074 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
2075 lids.idlist_len = 0;
2076 lids.idlist_val = NULL;
2078 cnamelen = strlen(acell);
2080 if (afs_is_foreign_ticket_name(aname, NULL, acell, localcellname)) {
2082 ("MapName: cell is foreign. cell=%s, localcell=%s, localrealms={%s,%s,%s,%s}\n",
2083 acell, localcellname, local_realms[0],local_realms[1],local_realms[2],local_realms[3]));
2084 if ((anamelen + cnamelen + 1) >= PR_MAXNAMELEN) {
2086 ("MapName: Name too long, using AnonymousID for %s@%s\n",
2088 *aval = AnonymousID;
2091 foreign = 1; /* attempt cross-cell authentication */
2092 tname = (char *)malloc(PR_MAXNAMELEN);
2094 ViceLog(0, ("Failed malloc in MapName_r\n"));
2097 strcpy(tname, aname);
2098 tname[anamelen] = '@';
2099 strcpy(tname + anamelen + 1, acell);
2100 lnames.namelist_val = (prname *) tname;
2105 code = hpr_NameToId(&lnames, &lids);
2108 if (lids.idlist_val) {
2109 *aval = lids.idlist_val[0];
2110 if (*aval == AnonymousID) {
2112 ("MapName: NameToId on %s returns anonymousID\n",
2113 lnames.namelist_val[0]));
2115 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
2118 ("MapName: NameToId on '%s' is unknown\n",
2119 lnames.namelist_val[0]));
2125 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
2133 /* NOTE: this returns the client with a Write lock and a refCount */
2135 h_ID2Client(afs_int32 vid)
2137 register struct client *client;
2138 register struct host *host;
2142 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
2143 if (host->hostFlags & HOSTDELETED)
2145 for (client = host->FirstClient; client; client = client->next) {
2146 if (!client->deleted && client->ViceId == vid) {
2149 ObtainWriteLock(&client->lock);
2154 if (count != hostCount) {
2155 ViceLog(0, ("h_ID2Client found %d of %d hosts\n", count, hostCount));
2156 } else if (host != NULL) {
2157 ViceLog(0, ("h_ID2Client found more than %d hosts\n", hostCount));
2158 ShutDownAndCore(PANIC);
2166 * Called by the server main loop. Returns a h_Held client, which must be
2167 * released later the main loop. Allocates a client if the matching one
2168 * isn't around. The client is returned with its reference count incremented
2169 * by one. The caller must call h_ReleaseClient_r when finished with
2172 * The refCount on client->host is returned incremented. h_ReleaseClient_r
2173 * does not decrement the refCount on client->host.
2176 h_FindClient_r(struct rx_connection *tcon)
2178 register struct client *client;
2179 struct host *host = NULL;
2180 struct client *oldClient;
2181 afs_int32 viceid = 0;
2185 #if (64-MAXKTCNAMELEN)
2186 ticket name length != 64
2190 char uname[PR_MAXNAMELEN];
2191 char tcell[MAXKTCREALMLEN];
2195 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2196 if (client && client->sid == rxr_CidOf(tcon)
2197 && client->VenusEpoch == rxr_GetEpoch(tcon)) {
2199 h_Hold_r(client->host);
2200 if (!client->deleted && client->prfail != 2) {
2201 /* Could add shared lock on client here */
2202 /* note that we don't have to lock entry in this path to
2203 * ensure CPS is initialized, since we don't call rx_SetSpecific
2204 * until initialization is done, and we only get here if
2205 * rx_GetSpecific located the client structure.
2210 ObtainWriteLock(&client->lock); /* released at end */
2216 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
2218 ("FindClient: authenticating connection: authClass=%d\n",
2220 if (authClass == 1) {
2221 /* A bcrypt tickets, no longer supported */
2222 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
2223 viceid = AnonymousID;
2224 expTime = 0x7fffffff;
2225 } else if (authClass == 2) {
2228 /* kerberos ticket */
2229 code = rxkad_GetServerInfo(tcon, /*level */ 0, (afs_uint32 *)&expTime,
2230 tname, tinst, tcell, &kvno);
2232 ViceLog(1, ("Failed to get rxkad ticket info\n"));
2233 viceid = AnonymousID;
2234 expTime = 0x7fffffff;
2236 int ilen = strlen(tinst);
2238 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
2239 tname, tinst, tcell, expTime, kvno));
2240 strncpy(uname, tname, sizeof(uname));
2242 if (strlen(uname) + 1 + ilen >= sizeof(uname))
2245 strcat(uname, tinst);
2247 /* translate the name to a vice id */
2248 code = MapName_r(uname, tcell, &viceid);
2252 ("failed to map name=%s, cell=%s -> code=%d\n", uname,
2255 viceid = AnonymousID;
2256 expTime = 0x7fffffff;
2260 viceid = AnonymousID; /* unknown security class */
2261 expTime = 0x7fffffff;
2264 if (!client) { /* loop */
2265 host = h_GetHost_r(tcon); /* Returns with incremented refCount */
2271 /* First try to find the client structure */
2272 for (client = host->FirstClient; client; client = client->next) {
2273 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2274 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2277 ObtainWriteLock(&client->lock);
2283 /* Still no client structure - get one */
2286 if (host->hostFlags & HOSTDELETED) {
2291 /* Retry to find the client structure */
2292 for (client = host->FirstClient; client; client = client->next) {
2293 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2294 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2296 goto retryfirstclient;
2301 ObtainWriteLock(&client->lock);
2302 client->refCount = 1;
2303 client->host = host;
2304 #if FS_STATS_DETAILED
2305 client->InSameNetwork = host->InSameNetwork;
2306 #endif /* FS_STATS_DETAILED */
2307 client->ViceId = viceid;
2308 client->expTime = expTime; /* rx only */
2309 client->authClass = authClass; /* rx only */
2310 client->sid = rxr_CidOf(tcon);
2311 client->VenusEpoch = rxr_GetEpoch(tcon);
2312 client->CPS.prlist_val = NULL;
2313 client->CPS.prlist_len = 0;
2317 client->prfail = fail;
2319 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
2320 client->CPS.prlist_len = 0;
2321 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID))
2322 free(client->CPS.prlist_val);
2323 client->CPS.prlist_val = NULL;
2324 client->ViceId = viceid;
2325 client->expTime = expTime;
2327 if (viceid == ANONYMOUSID) {
2328 client->CPS.prlist_len = AnonCPS.prlist_len;
2329 client->CPS.prlist_val = AnonCPS.prlist_val;
2332 code = hpr_GetCPS(viceid, &client->CPS);
2337 ("pr_GetCPS failed(%d) for user %d, host %" AFS_PTR_FMT " (%s:%d)\n",
2338 code, viceid, client->host,
2339 afs_inet_ntoa_r(client->host->host,hoststr),
2340 ntohs(client->host->port)));
2342 /* Although ubik_Call (called by pr_GetCPS) traverses thru
2343 * all protection servers and reevaluates things if no
2344 * sync server or quorum is found we could still end up
2345 * with one of these errors. In such case we would like to
2346 * reevaluate the rpc call to find if there's cps for this
2347 * guy. We treat other errors (except network failures
2348 * ones - i.e. code < 0) as an indication that there is no
2349 * CPS for this host. Ideally we could like to deal this
2350 * problem the other way around (i.e. if code == NOCPS
2351 * ignore else retry next time) but the problem is that
2352 * there're other errors (i.e. EPERM) for which we don't
2353 * want to retry and we don't know the whole code list!
2355 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
2359 /* the disabling of system:administrators is so iffy and has so many
2360 * possible failure modes that we will disable it again */
2361 /* Turn off System:Administrator for safety
2362 * if (AL_IsAMember(SystemId, client->CPS) == 0)
2363 * assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
2366 /* Now, tcon may already be set to a rock, since we blocked with no host
2367 * or client locks set above in pr_GetCPS (XXXX some locking is probably
2368 * required). So, before setting the RPC's rock, we should disconnect
2369 * the RPC from the other client structure's rock.
2371 oldClient = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2372 if (oldClient && oldClient != client && oldClient->sid == rxr_CidOf(tcon)
2373 && oldClient->VenusEpoch == rxr_GetEpoch(tcon)) {
2375 if (!oldClient->deleted) {
2376 /* if we didn't create it, it's not ours to put back */
2378 ViceLog(0, ("FindClient: stillborn client %p(%x); "
2379 "conn %p (host %s:%d) had client %p(%x)\n",
2380 client, client->sid, tcon,
2381 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2382 ntohs(rxr_PortOf(tcon)),
2383 oldClient, oldClient->sid));
2384 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2385 free(client->CPS.prlist_val);
2386 client->CPS.prlist_val = NULL;
2387 client->CPS.prlist_len = 0;
2389 /* We should perhaps check for 0 here */
2391 ReleaseWriteLock(&client->lock);
2396 oldClient->refCount++;
2398 ObtainWriteLock(&oldClient->lock);
2402 ViceLog(0, ("FindClient: deleted client %p(%x) already had "
2403 "conn %p (host %s:%d), stolen by client %p(%x)\n",
2404 oldClient, oldClient->sid, tcon,
2405 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2406 ntohs(rxr_PortOf(tcon)),
2407 client, client->sid));
2408 /* rx_SetSpecific will be done immediately below */
2411 /* Avoid chaining in more than once. */
2415 if (host->hostFlags & HOSTDELETED) {
2420 client->host = NULL;
2422 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2423 free(client->CPS.prlist_val);
2424 client->CPS.prlist_val = NULL;
2425 client->CPS.prlist_len = 0;
2428 ReleaseWriteLock(&client->lock);
2433 client->next = host->FirstClient;
2434 host->FirstClient = client;
2436 CurrentConnections++; /* increment number of connections */
2438 rx_SetSpecific(tcon, rxcon_client_key, client);
2439 ReleaseWriteLock(&client->lock);
2443 } /*h_FindClient_r */
2446 h_ReleaseClient_r(struct client *client)
2448 assert(client->refCount > 0);
2455 * Sigh: this one is used to get the client AGAIN within the individual
2456 * server routines. This does not bother h_Holding the host, since
2457 * this is assumed already have been done by the server main loop.
2458 * It does check tokens, since only the server routines can return the
2459 * VICETOKENDEAD error code
2462 GetClient(struct rx_connection *tcon, struct client **cp)
2464 register struct client *client;
2469 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2470 if (client == NULL) {
2472 ("GetClient: no client in conn %p (host %s:%d), VBUSYING\n",
2473 tcon, afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2474 ntohs(rxr_PortOf(tcon))));
2478 if (rxr_CidOf(tcon) != client->sid || rxr_GetEpoch(tcon) != client->VenusEpoch) {
2480 ("GetClient: tcon %p tcon sid %d client sid %d\n",
2481 tcon, rxr_CidOf(tcon), client->sid));
2485 if (client && client->LastCall > client->expTime && client->expTime) {
2487 ("Token for %s at %s:%d expired %d\n", h_UserName(client),
2488 afs_inet_ntoa_r(client->host->host, hoststr),
2489 ntohs(client->host->port), client->expTime));
2491 return VICETOKENDEAD;
2501 PutClient(struct client **cp)
2507 h_ReleaseClient_r(*cp);
2514 /* Client user name for short term use. Note that this is NOT inexpensive */
2516 h_UserName(struct client *client)
2518 static char User[PR_MAXNAMELEN + 1];
2522 lids.idlist_len = 1;
2523 lids.idlist_val = (afs_int32 *) malloc(1 * sizeof(afs_int32));
2524 if (!lids.idlist_val) {
2525 ViceLog(0, ("Failed malloc in h_UserName\n"));
2528 lnames.namelist_len = 0;
2529 lnames.namelist_val = (prname *) 0;
2530 lids.idlist_val[0] = client->ViceId;
2531 if (hpr_IdToName(&lids, &lnames)) {
2532 /* We need to free id we alloced above! */
2533 free(lids.idlist_val);
2534 return "*UNKNOWN USER NAME*";
2536 strncpy(User, lnames.namelist_val[0], PR_MAXNAMELEN);
2537 free(lids.idlist_val);
2538 free(lnames.namelist_val);
2547 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
2548 CEs, CEBlocks, HTs, HTBlocks));
2554 h_PrintClient(register struct host *host, int flags, void *rock)
2556 StreamHandle_t *file = (StreamHandle_t *)rock;
2557 register struct client *client;
2562 time_t LastCall, expTime;
2565 LastCall = host->LastCall;
2566 if (host->hostFlags & HOSTDELETED) {
2570 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2571 "Host %s:%d down = %d, LastCall %s",
2572 afs_inet_ntoa_r(host->host, hoststr),
2573 ntohs(host->port), (host->hostFlags & VENUSDOWN),
2574 afs_ctime(&LastCall, tbuffer,
2576 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2577 for (client = host->FirstClient; client; client = client->next) {
2578 if (!client->deleted) {
2579 expTime = client->expTime;
2580 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2581 " user id=%d, name=%s, sl=%s till %s",
2582 client->ViceId, h_UserName(client),
2584 authClass ? "Authenticated" :
2585 "Not authenticated",
2587 authClass ? afs_ctime(&expTime, tbuffer,
2590 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2591 (void)afs_snprintf(tmpStr, sizeof tmpStr, " CPS-%d is [",
2592 client->CPS.prlist_len);
2593 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2594 if (client->CPS.prlist_val) {
2595 for (i = 0; i > client->CPS.prlist_len; i++) {
2596 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
2597 client->CPS.prlist_val[i]);
2598 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2601 sprintf(tmpStr, "]\n");
2602 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2608 } /*h_PrintClient */
2613 * Print a list of clients, with last security level and token value seen,
2617 h_PrintClients(void)
2623 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
2627 ("Couldn't create client dump file %s\n",
2628 AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2631 now = FT_ApproxTime();
2632 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active users at %s\n",
2633 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
2634 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2635 h_Enumerate(h_PrintClient, (char *)file);
2636 STREAM_REALLYCLOSE(file);
2637 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2644 h_DumpHost(register struct host *host, int flags, void *rock)
2646 StreamHandle_t *file = (StreamHandle_t *)rock;
2653 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2654 "ip:%s 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 [",
2655 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port), host->index,
2656 host->cblist, CheckLock(&host->lock), host->LastCall,
2657 host->ActiveCall, (host->hostFlags & VENUSDOWN),
2658 host->hostFlags & HOSTDELETED, host->Console,
2659 host->hostFlags & CLIENTDELETED, host->hcpsfailed,
2661 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2662 if (host->hcps.prlist_val)
2663 for (i = 0; i < host->hcps.prlist_len; i++) {
2664 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
2665 host->hcps.prlist_val[i]);
2666 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2668 sprintf(tmpStr, "] [");
2669 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2670 if (host->interface)
2671 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
2673 sprintf(tmpStr, " %s:%d",
2674 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
2675 ntohs(host->interface->interface[i].port));
2676 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2678 sprintf(tmpStr, "] refCount:%d hostFlags:%hu\n", host->refCount, host->hostFlags);
2679 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2691 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
2697 ("Couldn't create host dump file %s\n",
2698 AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2701 now = FT_ApproxTime();
2702 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active hosts at %s\n",
2703 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
2704 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2705 h_Enumerate(h_DumpHost, (char *)file);
2706 STREAM_REALLYCLOSE(file);
2707 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2711 #ifdef AFS_DEMAND_ATTACH_FS
2714 * host state serialization
2716 static int h_stateFillHeader(struct host_state_header * hdr);
2717 static int h_stateCheckHeader(struct host_state_header * hdr);
2718 static int h_stateAllocMap(struct fs_dump_state * state);
2719 static int h_stateSaveHost(struct host * host, int flags, void *rock);
2720 static int h_stateRestoreHost(struct fs_dump_state * state);
2721 static int h_stateRestoreIndex(struct host * h, int flags, void *rock);
2722 static int h_stateVerifyHost(struct host * h, int flags, void *rock);
2723 static int h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h, afs_uint32 addr, afs_uint16 port);
2724 static int h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h);
2725 static void h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out);
2726 static void h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out);
2729 /* this procedure saves all host state to disk for fast startup */
2731 h_stateSave(struct fs_dump_state * state)
2733 AssignInt64(state->eof_offset, &state->hdr->h_offset);
2736 ViceLog(0, ("h_stateSave: hostCount=%d\n", hostCount));
2738 /* invalidate host state header */
2739 memset(state->h_hdr, 0, sizeof(struct host_state_header));
2741 if (fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2742 sizeof(struct host_state_header))) {
2747 fs_stateIncEOF(state, sizeof(struct host_state_header));
2749 h_Enumerate_r(h_stateSaveHost, hostList, (char *)state);
2754 h_stateFillHeader(state->h_hdr);
2756 /* write the real header to disk */
2757 state->bail = fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2758 sizeof(struct host_state_header));
2765 * host state serialization
2767 * this procedure restores all host state from a disk for fast startup
2770 h_stateRestore(struct fs_dump_state * state)
2774 /* seek to the right position and read in the host state header */
2775 if (fs_stateReadHeader(state, &state->hdr->h_offset, state->h_hdr,
2776 sizeof(struct host_state_header))) {
2781 /* check the validity of the header */
2782 if (h_stateCheckHeader(state->h_hdr)) {
2787 records = state->h_hdr->records;
2789 if (h_stateAllocMap(state)) {
2794 /* iterate over records restoring host state */
2795 for (i=0; i < records; i++) {
2796 if (h_stateRestoreHost(state) != 0) {
2807 h_stateRestoreIndices(struct fs_dump_state * state)
2809 h_Enumerate_r(h_stateRestoreIndex, hostList, (char *)state);
2814 h_stateRestoreIndex(struct host * h, int flags, void *rock)
2816 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2817 if (cb_OldToNew(state, h->cblist, &h->cblist)) {
2818 return H_ENUMERATE_BAIL(flags);
2824 h_stateVerify(struct fs_dump_state * state)
2826 h_Enumerate_r(h_stateVerifyHost, hostList, (char *)state);
2831 h_stateVerifyHost(struct host * h, int flags, void* rock)
2833 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2837 ViceLog(0, ("h_stateVerifyHost: error: NULL host pointer in linked list\n"));
2838 return H_ENUMERATE_BAIL(flags);
2842 for (i = h->interface->numberOfInterfaces-1; i >= 0; i--) {
2843 if (h_stateVerifyAddrHash(state, h, h->interface->interface[i].addr,
2844 h->interface->interface[i].port)) {
2848 if (h_stateVerifyUuidHash(state, h)) {
2851 } else if (h_stateVerifyAddrHash(state, h, h->host, h->port)) {
2855 if (cb_stateVerifyHCBList(state, h)) {
2863 h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h, afs_uint32 addr, afs_uint16 port)
2865 int ret = 0, found = 0;
2866 struct host *host = NULL;
2867 struct h_AddrHashChain *chain;
2868 int index = h_HashIndex(addr);
2872 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
2873 host = chain->hostPtr;
2875 afs_inet_ntoa_r(addr, tmp);
2876 ViceLog(0, ("h_stateVerifyAddrHash: error: addr hash chain has NULL host ptr (lookup addr %s)\n", tmp));
2880 if ((chain->addr == addr) && (chain->port == port)) {
2882 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr hash entry points to different host struct (%d, %d)\n",
2883 h->index, host->index));
2884 state->flags.warnings_generated = 1;
2889 if (chain_len > FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN) {
2890 ViceLog(0, ("h_stateVerifyAddrHash: error: hash chain length exceeds %d; assuming there's a loop\n",
2891 FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN));
2899 afs_inet_ntoa_r(addr, tmp);
2900 if (state->mode == FS_STATE_LOAD_MODE) {
2901 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s not found in hash\n", tmp));
2905 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr %s not found in hash\n", tmp));
2906 state->flags.warnings_generated = 1;
2915 h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h)
2917 int ret = 0, found = 0;
2918 struct host *host = NULL;
2919 struct h_UuidHashChain *chain;
2920 afsUUID * uuidp = &h->interface->uuid;
2921 int index = h_UuidHashIndex(uuidp);
2925 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
2926 host = chain->hostPtr;
2928 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
2929 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid hash chain has NULL host ptr (lookup uuid %s)\n", tmp));
2933 if (host->interface &&
2934 afs_uuid_equal(&host->interface->uuid, uuidp)) {
2936 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid hash entry points to different host struct (%d, %d)\n",
2937 h->index, host->index));
2938 state->flags.warnings_generated = 1;
2943 if (chain_len > FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN) {
2944 ViceLog(0, ("h_stateVerifyUuidHash: error: hash chain length exceeds %d; assuming there's a loop\n",
2945 FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN));
2953 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
2954 if (state->mode == FS_STATE_LOAD_MODE) {
2955 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid %s not found in hash\n", tmp));
2959 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid %s not found in hash\n", tmp));
2960 state->flags.warnings_generated = 1;
2968 /* create the host state header structure */
2970 h_stateFillHeader(struct host_state_header * hdr)
2972 hdr->stamp.magic = HOST_STATE_MAGIC;
2973 hdr->stamp.version = HOST_STATE_VERSION;
2977 /* check the contents of the host state header structure */
2979 h_stateCheckHeader(struct host_state_header * hdr)
2983 if (hdr->stamp.magic != HOST_STATE_MAGIC) {
2984 ViceLog(0, ("check_host_state_header: invalid state header\n"));
2987 else if (hdr->stamp.version != HOST_STATE_VERSION) {
2988 ViceLog(0, ("check_host_state_header: unknown version number\n"));
2994 /* allocate the host id mapping table */
2996 h_stateAllocMap(struct fs_dump_state * state)
2998 state->h_map.len = state->h_hdr->index_max + 1;
2999 state->h_map.entries = (struct idx_map_entry_t *)
3000 calloc(state->h_map.len, sizeof(struct idx_map_entry_t));
3001 return (state->h_map.entries != NULL) ? 0 : 1;
3004 /* function called by h_Enumerate to save a host to disk */
3006 h_stateSaveHost(struct host * host, int flags, void* rock)
3008 struct fs_dump_state *state = (struct fs_dump_state *) rock;
3009 int if_len=0, hcps_len=0;
3010 struct hostDiskEntry hdsk;
3011 struct host_state_entry_header hdr;
3012 struct Interface * ifp = NULL;
3013 afs_int32 * hcps = NULL;
3014 struct iovec iov[4];
3017 memset(&hdr, 0, sizeof(hdr));
3019 if (state->h_hdr->index_max < host->index) {
3020 state->h_hdr->index_max = host->index;
3023 h_hostToDiskEntry_r(host, &hdsk);
3024 if (host->interface) {
3025 if_len = sizeof(struct Interface) +
3026 ((host->interface->numberOfInterfaces-1) * sizeof(struct AddrPort));
3027 ifp = (struct Interface *) malloc(if_len);
3028 assert(ifp != NULL);
3029 memcpy(ifp, host->interface, if_len);
3030 hdr.interfaces = host->interface->numberOfInterfaces;
3031 iov[iovcnt].iov_base = (char *) ifp;
3032 iov[iovcnt].iov_len = if_len;
3035 if (host->hcps.prlist_val) {
3036 hdr.hcps = host->hcps.prlist_len;
3037 hcps_len = hdr.hcps * sizeof(afs_int32);
3038 hcps = (afs_int32 *) malloc(hcps_len);
3039 assert(hcps != NULL);
3040 memcpy(hcps, host->hcps.prlist_val, hcps_len);
3041 iov[iovcnt].iov_base = (char *) hcps;
3042 iov[iovcnt].iov_len = hcps_len;
3046 if (hdsk.index > state->h_hdr->index_max)
3047 state->h_hdr->index_max = hdsk.index;
3049 hdr.len = sizeof(struct host_state_entry_header) +
3050 sizeof(struct hostDiskEntry) + if_len + hcps_len;
3051 hdr.magic = HOST_STATE_ENTRY_MAGIC;
3053 iov[0].iov_base = (char *) &hdr;
3054 iov[0].iov_len = sizeof(hdr);
3055 iov[1].iov_base = (char *) &hdsk;
3056 iov[1].iov_len = sizeof(struct hostDiskEntry);
3058 if (fs_stateWriteV(state, iov, iovcnt)) {
3059 ViceLog(0, ("h_stateSaveHost: failed to save host %d", host->index));
3063 fs_stateIncEOF(state, hdr.len);
3065 state->h_hdr->records++;
3072 return H_ENUMERATE_BAIL(flags);
3077 /* restores a host from disk */
3079 h_stateRestoreHost(struct fs_dump_state * state)
3081 int ifp_len=0, hcps_len=0, bail=0;
3082 struct host_state_entry_header hdr;
3083 struct hostDiskEntry hdsk;
3084 struct host *host = NULL;
3085 struct Interface *ifp = NULL;
3086 afs_int32 * hcps = NULL;
3087 struct iovec iov[3];
3090 if (fs_stateRead(state, &hdr, sizeof(hdr))) {
3091 ViceLog(0, ("h_stateRestoreHost: failed to read host entry header from dump file '%s'\n",
3097 if (hdr.magic != HOST_STATE_ENTRY_MAGIC) {
3098 ViceLog(0, ("h_stateRestoreHost: fileserver state dump file '%s' is corrupt.\n",
3104 iov[0].iov_base = (char *) &hdsk;
3105 iov[0].iov_len = sizeof(struct hostDiskEntry);
3107 if (hdr.interfaces) {
3108 ifp_len = sizeof(struct Interface) +
3109 ((hdr.interfaces-1) * sizeof(struct AddrPort));
3110 ifp = (struct Interface *) malloc(ifp_len);
3111 assert(ifp != NULL);
3112 iov[iovcnt].iov_base = (char *) ifp;
3113 iov[iovcnt].iov_len = ifp_len;
3117 hcps_len = hdr.hcps * sizeof(afs_int32);
3118 hcps = (afs_int32 *) malloc(hcps_len);
3119 assert(hcps != NULL);
3120 iov[iovcnt].iov_base = (char *) hcps;
3121 iov[iovcnt].iov_len = hcps_len;
3125 if ((ifp_len + hcps_len + sizeof(hdsk) + sizeof(hdr)) != hdr.len) {
3126 ViceLog(0, ("h_stateRestoreHost: host entry header length fields are inconsistent\n"));
3131 if (fs_stateReadV(state, iov, iovcnt)) {
3132 ViceLog(0, ("h_stateRestoreHost: failed to read host entry\n"));
3137 if (!hdr.hcps && hdsk.hcps_valid) {
3138 /* valid, zero-length host cps ; does this ever happen? */
3139 hcps = (afs_int32 *) malloc(sizeof(afs_int32));
3140 assert(hcps != NULL);
3144 assert(host != NULL);
3147 host->interface = ifp;
3150 host->hcps.prlist_val = hcps;
3151 host->hcps.prlist_len = hdr.hcps;
3154 h_diskEntryToHost_r(&hdsk, host);
3155 h_SetupCallbackConn_r(host);
3157 h_AddHostToAddrHashTable_r(host->host, host->port, host);
3160 for (i = ifp->numberOfInterfaces-1; i >= 0; i--) {
3161 if (ifp->interface[i].valid &&
3162 !(ifp->interface[i].addr == host->host &&
3163 ifp->interface[i].port == host->port)) {
3164 h_AddHostToAddrHashTable_r(ifp->interface[i].addr,
3165 ifp->interface[i].port,
3169 h_AddHostToUuidHashTable_r(&ifp->uuid, host);
3171 h_InsertList_r(host);
3173 /* setup host id map entry */
3174 state->h_map.entries[hdsk.index].old_idx = hdsk.index;
3175 state->h_map.entries[hdsk.index].new_idx = host->index;
3187 /* serialize a host structure to disk */
3189 h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out)
3191 out->host = in->host;
3192 out->port = in->port;
3193 out->hostFlags = in->hostFlags;
3194 out->Console = in->Console;
3195 out->hcpsfailed = in->hcpsfailed;
3196 out->LastCall = in->LastCall;
3197 out->ActiveCall = in->ActiveCall;
3198 out->cpsCall = in->cpsCall;
3199 out->cblist = in->cblist;
3200 #ifdef FS_STATS_DETAILED
3201 out->InSameNetwork = in->InSameNetwork;
3204 /* special fields we save, but are not memcpy'd back on restore */
3205 out->index = in->index;
3206 out->hcps_len = in->hcps.prlist_len;
3207 out->hcps_valid = (in->hcps.prlist_val == NULL) ? 0 : 1;
3210 /* restore a host structure from disk */
3212 h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out)
3214 out->host = in->host;
3215 out->port = in->port;
3216 out->hostFlags = in->hostFlags;
3217 out->Console = in->Console;
3218 out->hcpsfailed = in->hcpsfailed;
3219 out->LastCall = in->LastCall;
3220 out->ActiveCall = in->ActiveCall;
3221 out->cpsCall = in->cpsCall;
3222 out->cblist = in->cblist;
3223 #ifdef FS_STATS_DETAILED
3224 out->InSameNetwork = in->InSameNetwork;
3228 /* index translation routines */
3230 h_OldToNew(struct fs_dump_state * state, afs_uint32 old, afs_uint32 * new)
3234 /* hosts use a zero-based index, so old==0 is valid */
3236 if (old >= state->h_map.len) {
3237 ViceLog(0, ("h_OldToNew: index %d is out of range\n", old));
3239 } else if (state->h_map.entries[old].old_idx != old) { /* sanity check */
3240 ViceLog(0, ("h_OldToNew: index %d points to an invalid host record\n", old));
3243 *new = state->h_map.entries[old].new_idx;
3248 #endif /* AFS_DEMAND_ATTACH_FS */
3252 * This counts the number of workstations, the number of active workstations,
3253 * and the number of workstations declared "down" (i.e. not heard from
3254 * recently). An active workstation has received a call since the cutoff
3255 * time argument passed.
3258 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
3260 register struct host *host;
3261 register int num = 0, active = 0, del = 0;
3265 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
3266 if (!(host->hostFlags & HOSTDELETED)) {
3268 if (host->ActiveCall > cutofftime)
3270 if (host->hostFlags & VENUSDOWN)
3274 if (count != hostCount) {
3275 ViceLog(0, ("h_GetWorkStats found %d of %d hosts\n", count, hostCount));
3276 } else if (host != NULL) {
3277 ViceLog(0, ("h_GetWorkStats found more than %d hosts\n", hostCount));
3278 ShutDownAndCore(PANIC);
3288 } /*h_GetWorkStats */
3291 /*------------------------------------------------------------------------
3292 * PRIVATE h_ClassifyAddress
3295 * Given a target IP address and a candidate IP address (both
3296 * in host byte order), classify the candidate into one of three
3297 * buckets in relation to the target by bumping the counters passed
3301 * a_targetAddr : Target address.
3302 * a_candAddr : Candidate address.
3303 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
3304 * addresses are either in the same network
3305 * or the same subnet.
3306 * a_diffSubnetP : ...when the candidate is in a different
3308 * a_diffNetworkP : ...when the candidate is in a different
3315 * The target and candidate addresses are both in host byte
3316 * order, NOT network byte order, when passed in.
3320 *------------------------------------------------------------------------*/
3323 h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
3324 afs_int32 * a_sameNetOrSubnetP, afs_int32 * a_diffSubnetP,
3325 afs_int32 * a_diffNetworkP)
3326 { /*h_ClassifyAddress */
3328 afs_uint32 targetNet;
3329 afs_uint32 targetSubnet;
3331 afs_uint32 candSubnet;
3334 * Put bad values into the subnet info to start with.
3336 targetSubnet = (afs_uint32) 0;
3337 candSubnet = (afs_uint32) 0;
3340 * Pull out the network and subnetwork numbers from the target
3341 * and candidate addresses. We can short-circuit this whole
3342 * affair if the target and candidate addresses are not of the
3345 if (IN_CLASSA(a_targetAddr)) {
3346 if (!(IN_CLASSA(a_candAddr))) {
3347 (*a_diffNetworkP)++;
3350 targetNet = a_targetAddr & IN_CLASSA_NET;
3351 candNet = a_candAddr & IN_CLASSA_NET;
3352 if (IN_SUBNETA(a_targetAddr))
3353 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
3354 if (IN_SUBNETA(a_candAddr))
3355 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
3356 } else if (IN_CLASSB(a_targetAddr)) {
3357 if (!(IN_CLASSB(a_candAddr))) {
3358 (*a_diffNetworkP)++;
3361 targetNet = a_targetAddr & IN_CLASSB_NET;
3362 candNet = a_candAddr & IN_CLASSB_NET;
3363 if (IN_SUBNETB(a_targetAddr))
3364 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
3365 if (IN_SUBNETB(a_candAddr))
3366 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
3367 } /*Class B target */
3368 else if (IN_CLASSC(a_targetAddr)) {
3369 if (!(IN_CLASSC(a_candAddr))) {
3370 (*a_diffNetworkP)++;
3373 targetNet = a_targetAddr & IN_CLASSC_NET;
3374 candNet = a_candAddr & IN_CLASSC_NET;
3377 * Note that class C addresses can't have subnets,
3378 * so we leave the defaults untouched.
3380 } /*Class C target */
3382 targetNet = a_targetAddr;
3383 candNet = a_candAddr;
3384 } /*Class D address */
3387 * Now, simply compare the extracted net and subnet values for
3388 * the two addresses (which at this point are known to be of the
3391 if (targetNet == candNet) {
3392 if (targetSubnet == candSubnet)
3393 (*a_sameNetOrSubnetP)++;
3397 (*a_diffNetworkP)++;
3399 } /*h_ClassifyAddress */
3402 /*------------------------------------------------------------------------
3403 * EXPORTED h_GetHostNetStats
3406 * Iterate through the host table, and classify each (non-deleted)
3407 * host entry into ``proximity'' categories (same net or subnet,
3408 * different subnet, different network).
3411 * a_numHostsP : Set to total number of (non-deleted) hosts.
3412 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
3413 * a_diffSubnetP : Set to # hosts on diff subnet as server.
3414 * a_diffNetworkP : Set to # hosts on diff network as server.
3420 * We only count non-deleted hosts. The storage pointed to by our
3421 * parameters is zeroed upon entry.
3425 *------------------------------------------------------------------------*/
3428 h_GetHostNetStats(afs_int32 * a_numHostsP, afs_int32 * a_sameNetOrSubnetP,
3429 afs_int32 * a_diffSubnetP, afs_int32 * a_diffNetworkP)
3430 { /*h_GetHostNetStats */
3432 register struct host *hostP; /*Ptr to current host entry */
3433 register afs_uint32 currAddr_HBO; /*Curr host addr, host byte order */
3437 * Clear out the storage pointed to by our parameters.
3439 *a_numHostsP = (afs_int32) 0;
3440 *a_sameNetOrSubnetP = (afs_int32) 0;
3441 *a_diffSubnetP = (afs_int32) 0;
3442 *a_diffNetworkP = (afs_int32) 0;
3445 for (count = 0, hostP = hostList; hostP && count < hostCount; hostP = hostP->next, count++) {
3446 if (!(hostP->hostFlags & HOSTDELETED)) {
3448 * Bump the number of undeleted host entries found.
3449 * In classifying the current entry's address, make
3450 * sure to first convert to host byte order.
3453 currAddr_HBO = (afs_uint32) ntohl(hostP->host);
3454 h_ClassifyAddress(FS_HostAddr_HBO, currAddr_HBO,
3455 a_sameNetOrSubnetP, a_diffSubnetP,
3457 } /*Only look at non-deleted hosts */
3458 } /*For each host record hashed to this index */
3459 if (count != hostCount) {
3460 ViceLog(0, ("h_GetHostNetStats found %d of %d hosts\n", count, hostCount));
3461 } else if (hostP != NULL) {
3462 ViceLog(0, ("h_GetHostNetStats found more than %d hosts\n", hostCount));
3463 ShutDownAndCore(PANIC);
3466 } /*h_GetHostNetStats */
3468 static afs_uint32 checktime;
3469 static afs_uint32 clientdeletetime;
3470 static struct AFSFid zerofid;
3474 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
3475 * Since it can serialize them, and pile up, it should be a separate LWP
3476 * from other events.
3480 CheckHost(register struct host *host, int flags, void *rock)
3482 register struct client *client;
3483 struct rx_connection *cb_conn = NULL;
3486 #ifdef AFS_DEMAND_ATTACH_FS
3487 /* kill the checkhost lwp ASAP during shutdown */
3489 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3491 return H_ENUMERATE_BAIL(flags);
3496 /* Host is held by h_Enumerate */
3498 for (client = host->FirstClient; client; client = client->next) {
3499 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3500 client->deleted = 1;
3501 host->hostFlags |= CLIENTDELETED;
3504 if (host->LastCall < checktime) {
3506 if (!(host->hostFlags & HOSTDELETED)) {
3507 host->hostFlags |= HWHO_INPROGRESS;
3508 cb_conn = host->callback_rxcon;
3509 rx_GetConnection(cb_conn);
3510 if (host->LastCall < clientdeletetime) {
3511 host->hostFlags |= HOSTDELETED;
3512 if (!(host->hostFlags & VENUSDOWN)) {
3513 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3514 if (host->interface) {
3517 RXAFSCB_InitCallBackState3(cb_conn,
3523 RXAFSCB_InitCallBackState(cb_conn);
3526 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3529 (void)afs_inet_ntoa_r(host->host, hoststr);
3531 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3532 hoststr, ntohs(host->port)));
3533 host->hostFlags |= VENUSDOWN;
3535 /* Note: it's safe to delete hosts even if they have call
3536 * back state, because break delayed callbacks (called when a
3537 * message is received from the workstation) will always send a
3538 * break all call backs to the workstation if there is no
3543 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3545 (void)afs_inet_ntoa_r(host->host, hoststr);
3546 if (host->interface) {
3547 afsUUID uuid = host->interface->uuid;
3549 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3552 if (MultiProbeAlternateAddress_r(host)) {
3553 ViceLog(0,("CheckHost: Probing all interfaces of host %s:%d failed, code %d\n",
3554 hoststr, ntohs(host->port), code));
3555 host->hostFlags |= VENUSDOWN;
3560 code = RXAFSCB_Probe(cb_conn);
3564 ("CheckHost: Probe failed for host %s:%d, code %d\n",
3565 hoststr, ntohs(host->port), code));
3566 host->hostFlags |= VENUSDOWN;
3572 rx_PutConnection(cb_conn);
3575 host->hostFlags &= ~HWHO_INPROGRESS;
3586 CheckHost_r(register struct host *host, int flags, void *dummy)
3588 register struct client *client;
3589 struct rx_connection *cb_conn = NULL;
3592 #ifdef AFS_DEMAND_ATTACH_FS
3593 /* kill the checkhost lwp ASAP during shutdown */
3595 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3597 return H_ENUMERATE_BAIL(flags);
3602 /* Host is held by h_Enumerate_r */
3603 for (client = host->FirstClient; client; client = client->next) {
3604 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3605 client->deleted = 1;
3606 host->hostFlags |= CLIENTDELETED;
3609 if (host->LastCall < checktime) {
3611 if (!(host->hostFlags & HOSTDELETED)) {
3612 cb_conn = host->callback_rxcon;
3613 rx_GetConnection(cb_conn);
3614 if (host->LastCall < clientdeletetime) {
3615 host->hostFlags |= HOSTDELETED;
3616 if (!(host->hostFlags & VENUSDOWN)) {
3617 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3618 if (host->interface) {
3621 RXAFSCB_InitCallBackState3(cb_conn,
3627 RXAFSCB_InitCallBackState(cb_conn);
3630 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3633 (void)afs_inet_ntoa_r(host->host, hoststr);
3635 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3636 hoststr, ntohs(host->port)));
3637 host->hostFlags |= VENUSDOWN;
3639 /* Note: it's safe to delete hosts even if they have call
3640 * back state, because break delayed callbacks (called when a
3641 * message is received from the workstation) will always send a
3642 * break all call backs to the workstation if there is no
3647 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3649 (void)afs_inet_ntoa_r(host->host, hoststr);
3650 if (host->interface) {
3651 afsUUID uuid = host->interface->uuid;
3653 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3656 if (MultiProbeAlternateAddress_r(host)) {
3657 ViceLog(0,("CheckHost_r: Probing all interfaces of host %s:%d failed, code %d\n",
3658 hoststr, ntohs(host->port), code));
3659 host->hostFlags |= VENUSDOWN;
3664 code = RXAFSCB_Probe(cb_conn);
3668 ("CheckHost_r: Probe failed for host %s:%d, code %d\n",
3669 hoststr, ntohs(host->port), code));
3670 host->hostFlags |= VENUSDOWN;
3676 rx_PutConnection(cb_conn);
3688 * Set VenusDown for any hosts that have not had a call in 15 minutes and
3689 * don't respond to a probe. Note that VenusDown can only be cleared if
3690 * a message is received from the host (see ServerLWP in file.c).
3691 * Delete hosts that have not had any calls in 1 hour, clients that
3692 * have not had any calls in 15 minutes.
3694 * This routine is called roughly every 5 minutes.
3699 afs_uint32 now = FT_ApproxTime();
3701 memset(&zerofid, 0, sizeof(zerofid));
3703 * Send a probe to the workstation if it hasn't been heard from in
3706 checktime = now - 15 * 60;
3707 clientdeletetime = now - 120 * 60; /* 2 hours ago */
3710 h_Enumerate_r(CheckHost_r, hostList, NULL);
3715 * This is called with host locked and held. At this point, the
3716 * hostAddrHashTable has an entry for the primary addr/port inserted
3717 * by h_Alloc_r(). No other interfaces should be considered valid.
3719 * The addresses in the interfaceAddr list are in host byte order.
3722 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
3729 struct Interface *interface;
3732 afs_uint16 port7001 = htons(7001);
3737 number = interf->numberOfInterfaces;
3738 myAddr = host->host; /* current interface address */
3739 myPort = host->port; /* current port */
3742 ("initInterfaceAddr : host %s:%d numAddr %d\n",
3743 afs_inet_ntoa_r(myAddr, hoststr), ntohs(myPort), number));
3745 /* validation checks */
3746 if (number < 0 || number > AFS_MAX_INTERFACE_ADDR) {
3748 ("Invalid number of alternate addresses is %d\n", number));
3753 * The client's notion of its own IP addresses is not reliable.
3755 * 1. The client list might contain private address ranges which
3756 * are likely to be re-used by many clients allocated addresses
3759 * 2. The client list will not include any public addresses that
3760 * are hidden by a NAT.
3762 * 3. Private address ranges that are exposed to the server will
3763 * be obtained from the rx connections that use them.
3765 * 4. Lists provided by the client are not necessarily truthful.
3766 * Many existing clients (UNIX) do not refresh the IP address
3767 * list as the actual assigned addresses change. The end result
3768 * is that they report the initial address list for the lifetime
3769 * of the process. In other words, a client can report addresses
3770 * that they are in fact not using. Adding these addresses to
3771 * the host interface list without verification is not only
3772 * pointless, it is downright dangerous.
3774 * We therefore do not add alternate addresses to the addr hash table.
3775 * We only use them for multi-rx callback breaks.
3779 * Convert IP addresses to network byte order, and remove
3780 * duplicate IP addresses from the interface list, and
3781 * determine whether or not the incoming addr/port is
3782 * listed. Note that if the address matches it is not
3783 * truly a match because the port number for the entries
3784 * in the interface list are port 7001 and the port number
3785 * for this connection might not be 7001.
3787 for (i = 0, count = 0, found = 0; i < number; i++) {
3788 interf->addr_in[i] = htonl(interf->addr_in[i]);
3789 for (j = 0; j < count; j++) {
3790 if (interf->addr_in[j] == interf->addr_in[i])
3794 interf->addr_in[count] = interf->addr_in[i];
3795 if (interf->addr_in[count] == myAddr &&
3803 * Allocate and initialize an interface structure for this host.
3806 interface = (struct Interface *)
3807 malloc(sizeof(struct Interface) +
3808 (sizeof(struct AddrPort) * (count - 1)));
3810 ViceLog(0, ("Failed malloc in initInterfaceAddr_r 1\n"));
3813 interface->numberOfInterfaces = count;
3815 interface = (struct Interface *)
3816 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * count));
3818 ViceLog(0, ("Failed malloc in initInterfaceAddr_r 2\n"));
3821 interface->numberOfInterfaces = count + 1;
3822 interface->interface[count].addr = myAddr;
3823 interface->interface[count].port = myPort;
3824 interface->interface[count].valid = 1;
3827 for (i = 0; i < count; i++) {
3829 interface->interface[i].addr = interf->addr_in[i];
3830 /* We store the port as 7001 because the addresses reported by
3831 * TellMeAboutYourself and WhoAreYou RPCs are only valid if they
3832 * are coming from fully connected hosts (no NAT/PATs)
3834 interface->interface[i].port = port7001;
3835 interface->interface[i].valid =
3836 (interf->addr_in[i] == myAddr && port7001 == myPort) ? 1 : 0;
3839 interface->uuid = interf->uuid;
3841 assert(!host->interface);
3842 host->interface = interface;
3844 if (LogLevel >= 125) {
3845 afsUUID_to_string(&interface->uuid, uuidstr, 127);
3847 ViceLog(125, ("--- uuid %s\n", uuidstr));
3848 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
3849 ViceLog(125, ("--- alt address %s:%d\n",
3850 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
3851 ntohs(host->interface->interface[i].port)));
3858 /* deleted a HashChain structure for this address and host */
3859 /* returns 1 on success */
3861 h_DeleteHostFromAddrHashTable_r(afs_uint32 addr, afs_uint16 port,
3865 register struct h_AddrHashChain **hp, *th;
3867 if (addr == 0 && port == 0)
3870 for (hp = &hostAddrHashTable[h_HashIndex(addr)]; (th = *hp);
3872 assert(th->hostPtr);
3873 if (th->hostPtr == host && th->addr == addr && th->port == port) {
3874 ViceLog(125, ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d)\n",
3875 host, afs_inet_ntoa_r(host->host, hoststr),
3876 ntohs(host->port)));
3883 ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) not found\n",
3884 host, afs_inet_ntoa_r(host->host, hoststr),
3885 ntohs(host->port)));
3891 ** prints out all alternate interface address for the host. The 'level'
3892 ** parameter indicates what level of debugging sets this output
3895 printInterfaceAddr(struct host *host, int level)
3900 if (host->interface) {
3901 /* check alternate addresses */
3902 number = host->interface->numberOfInterfaces;
3904 ViceLog(level, ("no-addresses "));
3906 for (i = 0; i < number; i++)
3907 ViceLog(level, ("%s:%d ", afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
3908 ntohs(host->interface->interface[i].port)));
3911 ViceLog(level, ("\n"));