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/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(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 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 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(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 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 */
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(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;
270 struct afsconf_dir *tdir;
272 struct afsconf_cell info;
276 tdir = afsconf_Open(AFSDIR_SERVER_ETC_DIRPATH);
278 ViceLog(0, ("hpr_Initialize: Could not open configuration directory: %s", AFSDIR_SERVER_ETC_DIRPATH));
282 code = afsconf_GetLocalCell(tdir, cellstr, sizeof(cellstr));
284 ViceLog(0, ("hpr_Initialize: Could not get local cell. [%d]", code));
289 code = afsconf_GetCellInfo(tdir, cellstr, "afsprot", &info);
291 ViceLog(0, ("hpr_Initialize: Could not locate cell %s in %s/%s",
292 cellstr, confDir->name, AFSDIR_CELLSERVDB_FILE));
299 ViceLog(0, ("hpr_Initialize: Could not initialize rx."));
304 /* Most callers use secLevel==1, however, the fileserver uses secLevel==2
305 * to force use of the KeyFile. secLevel == 0 implies -noauth was
307 if ((afsconf_GetLatestKey(tdir, 0, 0) == 0)) {
308 code = afsconf_ClientAuthSecure(tdir, &sc, &scIndex);
310 ViceLog(0, ("hpr_Initialize: clientauthsecure returns %d %s (so trying noauth)", code, afs_error_message(code)));
312 scIndex = RX_SECIDX_NULL;
314 if ((scIndex == RX_SECIDX_NULL) && (sc == NULL))
315 sc = rxnull_NewClientSecurityObject();
316 if (scIndex == RX_SECIDX_NULL)
317 ViceLog(0, ("hpr_Initialize: Could not get afs tokens, running unauthenticated. [%d]", code));
319 memset(serverconns, 0, sizeof(serverconns)); /* terminate list!!! */
320 for (i = 0; i < info.numServers; i++) {
322 rx_NewConnection(info.hostAddr[i].sin_addr.s_addr,
323 info.hostAddr[i].sin_port, PRSRV,
327 code = ubik_ClientInit(serverconns, uclient);
329 ViceLog(0, ("hpr_Initialize: ubik client init failed. [%d]", code));
332 code = rxs_Release(sc);
337 hpr_End(struct ubik_client *uclient)
342 code = ubik_ClientDestroy(uclient);
348 hpr_GetHostCPS(afs_int32 host, prlist *CPS)
350 #ifdef AFS_PTHREAD_ENV
353 struct ubik_client *uclient =
354 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
357 code = hpr_Initialize(&uclient);
359 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
365 code = ubik_PR_GetHostCPS(uclient, 0, host, CPS, &over);
366 if (code != PRSUCCESS)
369 /* do something about this, probably make a new call */
370 /* don't forget there's a hard limit in the interface */
372 "membership list for host id %d exceeds display limit\n",
377 return pr_GetHostCPS(host, CPS);
382 hpr_NameToId(namelist *names, idlist *ids)
384 #ifdef AFS_PTHREAD_ENV
387 struct ubik_client *uclient =
388 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
391 code = hpr_Initialize(&uclient);
393 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
398 for (i = 0; i < names->namelist_len; i++)
399 stolower(names->namelist_val[i]);
400 code = ubik_PR_NameToID(uclient, 0, names, ids);
403 return pr_NameToId(names, ids);
408 hpr_IdToName(idlist *ids, namelist *names)
410 #ifdef AFS_PTHREAD_ENV
412 struct ubik_client *uclient =
413 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
416 code = hpr_Initialize(&uclient);
418 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
423 code = ubik_PR_IDToName(uclient, 0, ids, names);
426 return pr_IdToName(ids, names);
431 hpr_GetCPS(afs_int32 id, prlist *CPS)
433 #ifdef AFS_PTHREAD_ENV
436 struct ubik_client *uclient =
437 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
440 code = hpr_Initialize(&uclient);
442 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
448 code = ubik_PR_GetCPS(uclient, 0, id, CPS, &over);
449 if (code != PRSUCCESS)
452 /* do something about this, probably make a new call */
453 /* don't forget there's a hard limit in the interface */
454 fprintf(stderr, "membership list for id %d exceeds display limit\n",
459 return pr_GetCPS(id, CPS);
463 static short consolePort = 0;
466 h_Lock_r(struct host *host)
476 * returns 1 if already locked
477 * else returns locks and returns 0
481 h_NBLock_r(struct host *host)
483 struct Lock *hostLock = &host->lock;
488 if (!(hostLock->excl_locked) && !(hostLock->readers_reading))
489 hostLock->excl_locked = WRITE_LOCK;
493 LOCK_UNLOCK(hostLock);
502 #if FS_STATS_DETAILED
503 /*------------------------------------------------------------------------
504 * PRIVATE h_AddrInSameNetwork
507 * Given a target IP address and a candidate IP address (both
508 * in host byte order), return a non-zero value (1) if the
509 * candidate address is in a different network from the target
513 * a_targetAddr : Target address.
514 * a_candAddr : Candidate address.
517 * 1 if the candidate address is in the same net as the target,
521 * The target and candidate addresses are both in host byte
522 * order, NOT network byte order, when passed in. We return
523 * our value as a character, since that's the type of field in
524 * the host structure, where this info will be stored.
528 *------------------------------------------------------------------------*/
531 h_AddrInSameNetwork(afs_uint32 a_targetAddr, afs_uint32 a_candAddr)
532 { /*h_AddrInSameNetwork */
534 afs_uint32 targetNet;
538 * Pull out the network and subnetwork numbers from the target
539 * and candidate addresses. We can short-circuit this whole
540 * affair if the target and candidate addresses are not of the
543 if (IN_CLASSA(a_targetAddr)) {
544 if (!(IN_CLASSA(a_candAddr))) {
547 targetNet = a_targetAddr & IN_CLASSA_NET;
548 candNet = a_candAddr & IN_CLASSA_NET;
549 } else if (IN_CLASSB(a_targetAddr)) {
550 if (!(IN_CLASSB(a_candAddr))) {
553 targetNet = a_targetAddr & IN_CLASSB_NET;
554 candNet = a_candAddr & IN_CLASSB_NET;
555 } /*Class B target */
556 else if (IN_CLASSC(a_targetAddr)) {
557 if (!(IN_CLASSC(a_candAddr))) {
560 targetNet = a_targetAddr & IN_CLASSC_NET;
561 candNet = a_candAddr & IN_CLASSC_NET;
562 } /*Class C target */
564 targetNet = a_targetAddr;
565 candNet = a_candAddr;
566 } /*Class D address */
569 * Now, simply compare the extracted net values for the two addresses
570 * (which at this point are known to be of the same class)
572 if (targetNet == candNet)
577 } /*h_AddrInSameNetwork */
578 #endif /* FS_STATS_DETAILED */
581 /* Assumptions: called with held host */
583 h_gethostcps_r(struct host *host, afs_int32 now)
588 /* wait if somebody else is already doing the getCPS call */
589 while (host->hostFlags & HCPS_INPROGRESS) {
590 slept = 1; /* I did sleep */
591 host->hostFlags |= HCPS_WAITING; /* I am sleeping now */
592 #ifdef AFS_PTHREAD_ENV
593 pthread_cond_wait(&host->cond, &host_glock_mutex);
594 #else /* AFS_PTHREAD_ENV */
595 if ((code = LWP_WaitProcess(&(host->hostFlags))) != LWP_SUCCESS)
596 ViceLog(0, ("LWP_WaitProcess returned %d\n", code));
597 #endif /* AFS_PTHREAD_ENV */
601 host->hostFlags |= HCPS_INPROGRESS; /* mark as CPSCall in progress */
602 if (host->hcps.prlist_val)
603 free(host->hcps.prlist_val); /* this is for hostaclRefresh */
604 host->hcps.prlist_val = NULL;
605 host->hcps.prlist_len = 0;
606 host->cpsCall = slept ? (FT_ApproxTime()) : (now);
609 code = hpr_GetHostCPS(ntohl(host->host), &host->hcps);
614 * Although ubik_Call (called by pr_GetHostCPS) traverses thru all protection servers
615 * and reevaluates things if no sync server or quorum is found we could still end up
616 * with one of these errors. In such case we would like to reevaluate the rpc call to
617 * find if there's cps for this guy. We treat other errors (except network failures
618 * ones - i.e. code < 0) as an indication that there is no CPS for this host. Ideally
619 * we could like to deal this problem the other way around (i.e. if code == NOCPS
620 * ignore else retry next time) but the problem is that there're other errors (i.e.
621 * EPERM) for which we don't want to retry and we don't know the whole code list!
623 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC) {
625 * We would have preferred to use a while loop and try again since ops in protected
626 * acls for this host will fail now but they'll be reevaluated on any subsequent
627 * call. The attempt to wait for a quorum/sync site or network error won't work
628 * since this problems really should only occurs during a complete fileserver
629 * restart. Since the fileserver will start before the ptservers (and thus before
630 * quorums are complete) clients will be utilizing all the fileserver's lwps!!
632 host->hcpsfailed = 1;
634 ("Warning: GetHostCPS failed (%d) for %p (%s:%d); will retry\n",
635 code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
637 host->hcpsfailed = 0;
639 ("gethost: GetHostCPS failed (%d) for %p (%s:%d); ignored\n",
640 code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
642 if (host->hcps.prlist_val)
643 free(host->hcps.prlist_val);
644 host->hcps.prlist_val = NULL;
645 host->hcps.prlist_len = 0; /* Make sure it's zero */
647 host->hcpsfailed = 0;
649 host->hostFlags &= ~HCPS_INPROGRESS;
650 /* signal all who are waiting */
651 if (host->hostFlags & HCPS_WAITING) { /* somebody is waiting */
652 host->hostFlags &= ~HCPS_WAITING;
653 #ifdef AFS_PTHREAD_ENV
654 assert(pthread_cond_broadcast(&host->cond) == 0);
655 #else /* AFS_PTHREAD_ENV */
656 if ((code = LWP_NoYieldSignal(&(host->hostFlags))) != LWP_SUCCESS)
657 ViceLog(0, ("LWP_NoYieldSignal returns %d\n", code));
658 #endif /* AFS_PTHREAD_ENV */
662 /* args in net byte order */
664 h_flushhostcps(afs_uint32 hostaddr, afs_uint16 hport)
669 h_Lookup_r(hostaddr, hport, &host);
671 host->hcpsfailed = 1;
680 * Allocate a host. It will be identified by the peer (ip,port) info in the
681 * rx connection provided. The host is returned held and locked
683 #define DEF_ROPCONS 2115
686 h_Alloc_r(struct rx_connection *r_con)
688 struct servent *serverentry;
690 #if FS_STATS_DETAILED
691 afs_uint32 newHostAddr_HBO; /*New host IP addr, in host byte order */
692 #endif /* FS_STATS_DETAILED */
696 host->host = rxr_HostOf(r_con);
697 host->port = rxr_PortOf(r_con);
699 h_AddHostToAddrHashTable_r(host->host, host->port, host);
701 if (consolePort == 0) { /* find the portal number for console */
702 #if defined(AFS_OSF_ENV)
703 serverentry = getservbyname("ropcons", "");
705 serverentry = getservbyname("ropcons", 0);
708 consolePort = serverentry->s_port;
710 consolePort = htons(DEF_ROPCONS); /* Use a default */
712 if (host->port == consolePort)
714 /* Make a callback channel even for the console, on the off chance that it
715 * makes a request that causes a break call back. It shouldn't. */
716 h_SetupCallbackConn_r(host);
717 host->LastCall = host->cpsCall = host->ActiveCall = FT_ApproxTime();
719 host->hcps.prlist_val = NULL;
720 host->hcps.prlist_len = 0;
721 host->interface = NULL;
723 host->hcpsfailed = 0; /* save cycles */
724 h_gethostcps(host); /* do this under host hold/lock */
726 host->FirstClient = NULL;
729 h_InsertList_r(host); /* update global host List */
730 #if FS_STATS_DETAILED
732 * Compare the new host's IP address (in host byte order) with ours
733 * (the File Server's), remembering if they are in the same network.
735 newHostAddr_HBO = (afs_uint32) ntohl(host->host);
736 host->InSameNetwork =
737 h_AddrInSameNetwork(FS_HostAddr_HBO, newHostAddr_HBO);
738 #endif /* FS_STATS_DETAILED */
745 /* Make a callback channel even for the console, on the off chance that it
746 * makes a request that causes a break call back. It shouldn't. */
748 h_SetupCallbackConn_r(struct host * host)
751 sc = rxnull_NewClientSecurityObject();
752 host->callback_rxcon =
753 rx_NewConnection(host->host, host->port, 1, sc, 0);
754 rx_SetConnDeadTime(host->callback_rxcon, 50);
755 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
759 * Lookup a host given an IP address and UDP port number.
760 * hostaddr and hport are in network order
761 * hostaddr and hport are in network order
762 * On return, refCount is incremented.
765 h_Lookup_r(afs_uint32 haddr, afs_uint16 hport, struct host **hostp)
768 struct host *host = NULL;
769 struct h_AddrHashChain *chain;
770 int index = h_HashIndex(haddr);
771 extern int hostaclRefresh;
774 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
775 host = chain->hostPtr;
777 if (!(host->hostFlags & HOSTDELETED) && chain->addr == haddr
778 && chain->port == hport) {
779 if ((host->hostFlags & HWHO_INPROGRESS) &&
780 h_threadquota(host->lock.num_waiting)) {
786 if (host->hostFlags & HOSTDELETED) {
793 now = FT_ApproxTime(); /* always evaluate "now" */
794 if (host->hcpsfailed || (host->cpsCall + hostaclRefresh < now)) {
796 * Every hostaclRefresh period (def 2 hrs) get the new
797 * membership list for the host. Note this could be the
798 * first time that the host is added to a group. Also
799 * here we also retry on previous legitimate hcps failures.
801 * If we get here refCount is elevated.
803 h_gethostcps_r(host, now);
813 /* Lookup a host given its UUID. */
815 h_LookupUuid_r(afsUUID * uuidp)
817 struct host *host = 0;
818 struct h_UuidHashChain *chain;
819 int index = h_UuidHashIndex(uuidp);
821 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
822 host = chain->hostPtr;
824 if (!(host->hostFlags & HOSTDELETED) && host->interface
825 && afs_uuid_equal(&host->interface->uuid, uuidp)) {
833 /* h_TossStuff_r: Toss anything in the host structure (the host or
834 * clients marked for deletion. Called from h_Release_r ONLY.
835 * To be called, there must be no holds, and either host->deleted
836 * or host->clientDeleted must be set.
839 h_TossStuff_r(struct host *host)
841 struct client **cp, *client;
844 /* make sure host doesn't go away over h_NBLock_r */
847 code = h_NBLock_r(host);
849 /* don't use h_Release_r, since that may call h_TossStuff_r again */
852 /* if somebody still has this host locked */
856 ("Warning: h_TossStuff_r failed; Host %" AFS_PTR_FMT " (%s:%d) was locked.\n",
857 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
863 /* if somebody still has this host held */
864 /* we must check this _after_ h_NBLock_r, since h_NBLock_r can drop and
865 * reacquire H_LOCK */
866 if (host->refCount > 0) {
869 ("Warning: h_TossStuff_r failed; Host %" AFS_PTR_FMT " (%s:%d) was held.\n",
870 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
874 /* ASSUMPTION: rxi_FreeConnection() does not yield */
875 for (cp = &host->FirstClient; (client = *cp);) {
876 if ((host->hostFlags & HOSTDELETED) || client->deleted) {
878 ObtainWriteLockNoBlock(&client->lock, code);
882 ("Warning: h_TossStuff_r failed: Host %p (%s:%d) "
883 "client %p was locked.\n",
884 host, afs_inet_ntoa_r(host->host, hoststr),
885 ntohs(host->port), client));
889 if (client->refCount) {
892 ("Warning: h_TossStuff_r failed: Host %p (%s:%d) "
893 "client %p refcount %d.\n",
894 host, afs_inet_ntoa_r(host->host, hoststr),
895 ntohs(host->port), client, client->refCount));
896 /* This is the same thing we do if the host is locked */
897 ReleaseWriteLock(&client->lock);
900 client->CPS.prlist_len = 0;
901 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
902 free(client->CPS.prlist_val);
903 client->CPS.prlist_val = NULL;
904 CurrentConnections--;
906 ReleaseWriteLock(&client->lock);
912 /* We've just cleaned out all the deleted clients; clear the flag */
913 host->hostFlags &= ~CLIENTDELETED;
915 if (host->hostFlags & HOSTDELETED) {
916 struct rx_connection *rxconn;
917 struct AddrPort hostAddrPort;
920 if (host->Console & 1)
922 if ((rxconn = host->callback_rxcon)) {
923 host->callback_rxcon = (struct rx_connection *)0;
924 rx_DestroyConnection(rxconn);
926 if (host->hcps.prlist_val)
927 free(host->hcps.prlist_val);
928 host->hcps.prlist_val = NULL;
929 host->hcps.prlist_len = 0;
930 DeleteAllCallBacks_r(host, 1);
931 host->hostFlags &= ~RESETDONE; /* just to be safe */
933 /* if alternate addresses do not exist */
934 if (!(host->interface)) {
935 h_DeleteHostFromAddrHashTable_r(host->host, host->port, host);
937 h_DeleteHostFromUuidHashTable_r(host);
938 h_DeleteHostFromAddrHashTable_r(host->host, host->port, host);
939 /* delete the hash entry for each valid alternate addresses */
940 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
941 hostAddrPort = host->interface->interface[i];
943 * if the interface addr/port is the primary, we already
944 * removed it. If the addr/port is not valid, its not
947 if (hostAddrPort.valid &&
948 (host->host != hostAddrPort.addr ||
949 host->port != hostAddrPort.port))
950 h_DeleteHostFromAddrHashTable_r(hostAddrPort.addr, hostAddrPort.port, host);
952 free(host->interface);
953 host->interface = NULL;
954 } /* if alternate address exists */
956 h_DeleteList_r(host); /* remove host from global host List */
963 /* h_Enumerate: Calls (*proc)(host, held, param) for at least each host in the
964 * system at the start of the enumeration (perhaps more). Hosts may be deleted
965 * (have delete flag set); ditto for clients. refCount is always incremented
966 * before (*proc) is called. The param flags is passed to (*proc) as the
967 * param flags, permitting (*proc) to stop the enumeration (BAIL).
969 * Needed? Why not always h_Hold_r and h_Release_r in (*proc), or even -never-
970 * h_Hold_r or h_Release_r in (*proc)?
972 * **The proc should return 0 if the host should be released, 1 if it should
973 * be held after enumeration.
976 h_Enumerate(int (*proc) (struct host*, int, void *), void *param)
978 struct host *host, **list;
984 if (hostCount == 0) {
988 list = (struct host **)malloc(hostCount * sizeof(struct host *));
990 ViceLog(0, ("Failed malloc in h_Enumerate (list)\n"));
993 flags = (int *)malloc(hostCount * sizeof(int));
995 ViceLog(0, ("Failed malloc in h_Enumerate (flags)\n"));
998 for (totalCount = count = 0, host = hostList;
999 host && totalCount < hostCount;
1000 host = host->next, totalCount++) {
1002 if (!(host->hostFlags & HOSTDELETED)) {
1008 if (totalCount != hostCount) {
1009 ViceLog(0, ("h_Enumerate found %d of %d hosts\n", totalCount, hostCount));
1010 } else if (host != NULL) {
1011 ViceLog(0, ("h_Enumerate found more than %d hosts\n", hostCount));
1012 ShutDownAndCore(PANIC);
1015 for (i = 0; i < count; i++) {
1016 flags[i] = (*proc) (list[i], flags[i], param);
1017 h_Release_r(list[i]);
1018 /* bail out of the enumeration early */
1019 if (H_ENUMERATE_ISSET_BAIL(flags[i]))
1023 free((void *)flags);
1027 /* h_Enumerate_r (revised):
1028 * Calls (*proc)(host, flags, param) for each host in hostList, starting
1029 * at enumstart. Called only under H_LOCK. Hosts may be deleted (have
1030 * delete flag set); ditto for clients. refCount is always incremented
1031 * before (*proc) is called. The param flags is passed to (*proc) as the
1032 * param flags, permitting (*proc) to stop the enumeration (BAIL).
1034 * Needed? Why not always h_Hold_r and h_Release_r in (*proc), or even -never-
1035 * h_Hold_r or h_Release_r in (*proc)?
1037 * @note Assumes that hostList is only prepended to, that a host is never
1038 * inserted into the middle. Otherwise this would not be guaranteed to
1041 * **The proc should return 0 if the host should be released, 1 if it should
1042 * be held after enumeration.
1045 h_Enumerate_r(int (*proc) (struct host *, int, void *),
1046 struct host *enumstart, void *param)
1048 struct host *host, *next;
1054 if (hostCount == 0) {
1061 /* find the first non-deleted host, so we know where to actually start
1063 for (count = 0; host && count < hostCount; count++) {
1064 if (!(host->hostFlags & HOSTDELETED)) {
1071 /* we didn't find a non-deleted host... */
1073 if (host && count >= hostCount) {
1074 /* ...because we found a loop */
1075 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", hostCount));
1076 ShutDownAndCore(PANIC);
1079 /* ...because the hostList is full of deleted hosts */
1083 h_Hold_r(enumstart);
1085 /* remember hostCount, lest it change over the potential H_LOCK drop in
1087 origHostCount = hostCount;
1089 for (count = 0, host = enumstart; host && count < origHostCount; host = next, flags = nflags, count++) {
1092 /* find the next non-deleted host */
1093 while (next && (next->hostFlags & HOSTDELETED)) {
1095 /* inc count for the skipped-over host */
1096 if (++count > origHostCount) {
1097 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", origHostCount));
1098 ShutDownAndCore(PANIC);
1101 if (next && !H_ENUMERATE_ISSET_BAIL(flags))
1104 if (!(host->hostFlags & HOSTDELETED)) {
1105 flags = (*proc) (host, flags, param);
1106 if (H_ENUMERATE_ISSET_BAIL(flags)) {
1107 h_Release_r(host); /* this might free up the host */
1111 h_Release_r(host); /* this might free up the host */
1113 if (host != NULL && count >= origHostCount) {
1114 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", origHostCount));
1115 ShutDownAndCore(PANIC);
1117 } /*h_Enumerate_r */
1120 /* inserts a new HashChain structure corresponding to this UUID */
1122 h_AddHostToUuidHashTable_r(struct afsUUID *uuid, struct host *host)
1125 struct h_UuidHashChain *chain;
1126 char uuid1[128], uuid2[128];
1129 /* hash into proper bucket */
1130 index = h_UuidHashIndex(uuid);
1132 /* don't add the same entry multiple times */
1133 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
1134 if (!chain->hostPtr)
1137 if (chain->hostPtr->interface &&
1138 afs_uuid_equal(&chain->hostPtr->interface->uuid, uuid)) {
1139 if (LogLevel >= 125) {
1140 afsUUID_to_string(&chain->hostPtr->interface->uuid, uuid1,
1142 afsUUID_to_string(uuid, uuid2, 127);
1143 ViceLog(125, ("h_AddHostToUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s) exists as %s:%d (uuid %s)\n",
1145 afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1146 ntohs(chain->hostPtr->port), uuid2));
1152 /* insert into beginning of list for this bucket */
1153 chain = (struct h_UuidHashChain *)malloc(sizeof(struct h_UuidHashChain));
1155 ViceLog(0, ("Failed malloc in h_AddHostToUuidHashTable_r\n"));
1158 chain->hostPtr = host;
1159 chain->next = hostUuidHashTable[index];
1160 hostUuidHashTable[index] = chain;
1163 afsUUID_to_string(uuid, uuid2, 127);
1165 ("h_AddHostToUuidHashTable_r: host %p (%s:%d) added as uuid %s\n",
1166 host, afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1167 ntohs(chain->hostPtr->port), uuid2));
1170 /* deletes a HashChain structure corresponding to this host */
1172 h_DeleteHostFromUuidHashTable_r(struct host *host)
1175 struct h_UuidHashChain **uhp, *uth;
1179 if (!host->interface)
1182 /* hash into proper bucket */
1183 index = h_UuidHashIndex(&host->interface->uuid);
1185 if (LogLevel >= 125)
1186 afsUUID_to_string(&host->interface->uuid, uuid1, 127);
1187 for (uhp = &hostUuidHashTable[index]; (uth = *uhp); uhp = &uth->next) {
1188 assert(uth->hostPtr);
1189 if (uth->hostPtr == host) {
1191 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d)\n",
1192 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1193 ntohs(host->port)));
1200 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d) not found\n",
1201 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1202 ntohs(host->port)));
1207 * This is called with host locked and held.
1209 * All addresses are in network byte order.
1212 invalidateInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1216 struct Interface *interface;
1217 char hoststr[16], hoststr2[16];
1220 assert(host->interface);
1222 ViceLog(125, ("invalidateInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1223 host, afs_inet_ntoa_r(host->host, hoststr),
1224 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1228 * Make sure this address is on the list of known addresses
1231 interface = host->interface;
1232 number = host->interface->numberOfInterfaces;
1233 for (i = 0; i < number; i++) {
1234 if (interface->interface[i].addr == addr &&
1235 interface->interface[i].port == port) {
1236 if (interface->interface[i].valid) {
1237 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1238 interface->interface[i].valid = 0;
1249 * This is called with host locked and held. This function differs
1250 * from removeInterfaceAddr_r in that it is called when the address
1251 * is being removed from the host regardless of whether or not there
1252 * is an interface list for the host. This function will delete the
1253 * host if there are no addresses left on it.
1255 * All addresses are in network byte order.
1258 removeAddress_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1261 char hoststr[16], hoststr2[16];
1262 struct rx_connection *rxconn;
1264 if (!host->interface || host->interface->numberOfInterfaces == 1) {
1265 if (host->host == addr && host->port == port) {
1267 ("Removing only address for host %" AFS_PTR_FMT " (%s:%d), deleting host.\n",
1268 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1269 host->hostFlags |= HOSTDELETED;
1271 * Do not remove the primary addr/port from the hash table.
1272 * It will be ignored due to the HOSTDELETED flag and will
1273 * be removed when h_TossStuff_r() cleans up the HOSTDELETED
1274 * host. Removing it here will only result in a search for
1275 * the host/addr/port in the hash chain which will fail.
1279 ("Removing address that does not belong to host %" AFS_PTR_FMT " (%s:%d).\n",
1280 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1283 if (host->host == addr && host->port == port) {
1284 removeInterfaceAddr_r(host, addr, port);
1286 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1287 if (host->interface->interface[i].valid) {
1289 ("Removed address for host %" AFS_PTR_FMT " (%s:%d), new primary interface %s:%d.\n",
1290 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1291 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr2),
1292 ntohs(host->interface->interface[i].port)));
1293 host->host = host->interface->interface[i].addr;
1294 host->port = host->interface->interface[i].port;
1295 h_AddHostToAddrHashTable_r(host->host, host->port, host);
1300 if (i == host->interface->numberOfInterfaces) {
1302 ("Removed only address for host %" AFS_PTR_FMT " (%s:%d), no valid alternate interfaces, deleting host.\n",
1303 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1304 host->hostFlags |= HOSTDELETED;
1305 /* addr/port was removed from the hash table */
1309 rxconn = host->callback_rxcon;
1310 host->callback_rxcon = NULL;
1313 rx_DestroyConnection(rxconn);
1318 sc = rxnull_NewClientSecurityObject();
1319 host->callback_rxcon =
1320 rx_NewConnection(host->host, host->port, 1, sc, 0);
1321 rx_SetConnDeadTime(host->callback_rxcon, 50);
1322 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
1325 /* not the primary addr/port, just invalidate it */
1326 invalidateInterfaceAddr_r(host, addr, port);
1334 createHostAddrHashChain_r(int index, afs_uint32 addr, afs_uint16 port, struct host *host)
1336 struct h_AddrHashChain *chain;
1339 /* insert into beginning of list for this bucket */
1340 chain = (struct h_AddrHashChain *)malloc(sizeof(struct h_AddrHashChain));
1342 ViceLog(0, ("Failed malloc in h_AddHostToAddrHashTable_r\n"));
1345 chain->hostPtr = host;
1346 chain->next = hostAddrHashTable[index];
1349 hostAddrHashTable[index] = chain;
1350 ViceLog(125, ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " added as %s:%d\n",
1351 host, afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1355 * Resolve host address conflicts when hashing by address.
1357 * @param[in] addr an ip address of the interface
1358 * @param[in] port the port of the interface
1359 * @param[in] newHost the host being added with this address
1360 * @param[in] oldHost the host previously added with this address
1363 reconcileHosts_r(afs_uint32 addr, afs_uint16 port, struct host *newHost,
1364 struct host *oldHost)
1366 struct rx_connection *cb = NULL;
1368 struct interfaceAddr interf;
1370 afsUUID *newHostUuid = &nulluuid;
1371 afsUUID *oldHostUuid = &nulluuid;
1375 ("reconcileHosts_r: addr %s:%d newHost %" AFS_PTR_FMT " oldHost %"
1376 AFS_PTR_FMT, afs_inet_ntoa_r(addr, hoststr), ntohs(port),
1379 assert(oldHost != newHost);
1380 caps.Capabilities_val = NULL;
1383 sc = rxnull_NewClientSecurityObject();
1386 cb = rx_NewConnection(addr, port, 1, sc, 0);
1387 rx_SetConnDeadTime(cb, 50);
1388 rx_SetConnHardDeadTime(cb, AFS_HARDDEADTIME);
1393 code = RXAFSCB_TellMeAboutYourself(cb, &interf, &caps);
1394 if (code == RXGEN_OPCODE) {
1395 code = RXAFSCB_WhoAreYou(cb, &interf);
1399 if (code == RXGEN_OPCODE ||
1400 (code == 0 && afs_uuid_equal(&interf.uuid, &nulluuid))) {
1402 ("reconcileHosts_r: WhoAreYou not supported for connection (%s:%d), error %d\n",
1403 afs_inet_ntoa_r(addr, hoststr), ntohs(port), code));
1408 ("reconcileHosts_r: WhoAreYou failed for connection (%s:%d), error %d\n",
1409 afs_inet_ntoa_r(addr, hoststr), ntohs(port), code));
1413 /* Since lock was dropped, the hosts may have been deleted during the rpcs. */
1414 if ((newHost->hostFlags & HOSTDELETED)
1415 && (oldHost->hostFlags & HOSTDELETED)) {
1417 ("reconcileHosts_r: new and old hosts were deleted during probe.\n"));
1421 /* A check can be done if at least one of the hosts has a uuid. It
1422 * is an error if the hosts have the same (not null) uuid. */
1423 if ((!(newHost->hostFlags & HOSTDELETED)) && newHost->interface) {
1424 newHostUuid = &(newHost->interface->uuid);
1426 if ((!(oldHost->hostFlags & HOSTDELETED)) && oldHost->interface) {
1427 oldHostUuid = &(oldHost->interface->uuid);
1429 if (afs_uuid_equal(newHostUuid, &nulluuid) &&
1430 afs_uuid_equal(oldHostUuid, &nulluuid)) {
1432 ("reconcileHosts_r: Cannot reconcile hosts for connection (%s:%d), no uuids\n",
1433 afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1436 if (afs_uuid_equal(newHostUuid, oldHostUuid)) {
1438 ("reconcileHosts_r: Cannot reconcile hosts for connection (%s:%d), same uuids\n",
1439 afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1443 /* Determine which host should be hashed */
1444 if ((!(newHost->hostFlags & HOSTDELETED))
1445 && afs_uuid_equal(newHostUuid, &(interf.uuid))) {
1446 /* Install the new host into the hash before removing the stale
1447 * addresses. Walk the hash chain again since the hash table may have
1448 * been changed when the host lock was dropped to get the uuid. */
1449 struct h_AddrHashChain *chain;
1450 int index = h_HashIndex(addr);
1451 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1452 if (chain->addr == addr && chain->port == port) {
1453 chain->hostPtr = newHost;
1454 removeAddress_r(oldHost, addr, port);
1458 createHostAddrHashChain_r(index, addr, port, newHost);
1459 removeAddress_r(oldHost, addr, port);
1462 if ((!(oldHost->hostFlags & HOSTDELETED))
1463 && afs_uuid_equal(oldHostUuid, &(interf.uuid))) {
1464 removeAddress_r(newHost, addr, port);
1469 if (!(newHost->hostFlags & HOSTDELETED)) {
1470 removeAddress_r(newHost, addr, port);
1472 if (!(oldHost->hostFlags & HOSTDELETED)) {
1473 removeAddress_r(oldHost, addr, port);
1477 h_Release_r(newHost);
1478 h_Release_r(oldHost);
1479 rx_DestroyConnection(cb);
1483 /* inserts a new HashChain structure corresponding to this address */
1485 h_AddHostToAddrHashTable_r(afs_uint32 addr, afs_uint16 port, struct host *host)
1488 struct h_AddrHashChain *chain;
1491 /* hash into proper bucket */
1492 index = h_HashIndex(addr);
1494 /* don't add the same address:port pair entry multiple times */
1495 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1496 if (chain->addr == addr && chain->port == port) {
1497 if (chain->hostPtr == host) {
1499 ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) already hashed\n",
1500 host, afs_inet_ntoa_r(chain->addr, hoststr),
1501 ntohs(chain->port)));
1504 if (!(chain->hostPtr->hostFlags & HOSTDELETED)) {
1505 /* attempt to resolve host address collision */
1506 reconcileHosts_r(addr, port, host, chain->hostPtr);
1511 createHostAddrHashChain_r(index, addr, port, host);
1515 * This is called with host locked and held.
1516 * It is called to either validate or add an additional interface
1517 * address/port on the specified host.
1519 * All addresses are in network byte order.
1522 addInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1526 struct Interface *interface;
1527 char hoststr[16], hoststr2[16];
1530 assert(host->interface);
1533 * Make sure this address is on the list of known addresses
1536 number = host->interface->numberOfInterfaces;
1537 for (i = 0; i < number; i++) {
1538 if (host->interface->interface[i].addr == addr &&
1539 host->interface->interface[i].port == port) {
1541 ("addInterfaceAddr : found host %" AFS_PTR_FMT " (%s:%d) adding %s:%d%s\n",
1542 host, afs_inet_ntoa_r(host->host, hoststr),
1543 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1544 ntohs(port), host->interface->interface[i].valid ? "" :
1547 if (host->interface->interface[i].valid == 0) {
1548 host->interface->interface[i].valid = 1;
1549 h_AddHostToAddrHashTable_r(addr, port, host);
1555 ViceLog(125, ("addInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) adding %s:%d\n",
1556 host, afs_inet_ntoa_r(host->host, hoststr),
1557 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1560 interface = (struct Interface *)
1561 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * number));
1563 ViceLog(0, ("Failed malloc in addInterfaceAddr_r\n"));
1566 interface->numberOfInterfaces = number + 1;
1567 interface->uuid = host->interface->uuid;
1568 for (i = 0; i < number; i++)
1569 interface->interface[i] = host->interface->interface[i];
1571 /* Add the new valid interface */
1572 interface->interface[number].addr = addr;
1573 interface->interface[number].port = port;
1574 interface->interface[number].valid = 1;
1575 h_AddHostToAddrHashTable_r(addr, port, host);
1576 free(host->interface);
1577 host->interface = interface;
1584 * This is called with host locked and held.
1586 * All addresses are in network byte order.
1589 removeInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1593 struct Interface *interface;
1594 char hoststr[16], hoststr2[16];
1597 assert(host->interface);
1599 ViceLog(125, ("removeInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1600 host, afs_inet_ntoa_r(host->host, hoststr),
1601 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1605 * Make sure this address is on the list of known addresses
1608 interface = host->interface;
1609 number = host->interface->numberOfInterfaces;
1610 for (i = 0; i < number; i++) {
1611 if (interface->interface[i].addr == addr &&
1612 interface->interface[i].port == port) {
1613 if (interface->interface[i].valid)
1614 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1616 for (; i < number; i++) {
1617 interface->interface[i] = interface->interface[i+1];
1619 interface->numberOfInterfaces = number;
1630 h_threadquota(int waiting)
1635 } else if (lwps > 32) {
1638 } else if (lwps > 16) {
1648 /* If found, host is returned with refCount incremented */
1650 h_GetHost_r(struct rx_connection *tcon)
1653 struct host *oldHost;
1655 struct interfaceAddr interf;
1656 int interfValid = 0;
1657 struct Identity *identP = NULL;
1660 char hoststr[16], hoststr2[16];
1662 struct rx_connection *cb_conn = NULL;
1663 struct rx_connection *cb_in = NULL;
1665 caps.Capabilities_val = NULL;
1667 haddr = rxr_HostOf(tcon);
1668 hport = rxr_PortOf(tcon);
1671 rx_DestroyConnection(cb_in);
1674 if (caps.Capabilities_val)
1675 free(caps.Capabilities_val);
1676 caps.Capabilities_val = NULL;
1677 caps.Capabilities_len = 0;
1680 if (h_Lookup_r(haddr, hport, &host))
1682 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
1683 if (host && !identP && !(host->Console & 1)) {
1684 /* This is a new connection, and we already have a host
1685 * structure for this address. Verify that the identity
1686 * of the caller matches the identity in the host structure.
1688 if ((host->hostFlags & HWHO_INPROGRESS) &&
1689 h_threadquota(host->lock.num_waiting)) {
1695 if (!(host->hostFlags & ALTADDR) ||
1696 (host->hostFlags & HOSTDELETED)) {
1697 /* Another thread is doing initialization
1698 * or this host was deleted while we
1699 * waited for the lock. */
1702 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1703 host, afs_inet_ntoa_r(host->host, hoststr),
1704 ntohs(host->port)));
1708 host->hostFlags |= HWHO_INPROGRESS;
1709 host->hostFlags &= ~ALTADDR;
1711 /* We received a new connection from an IP address/port
1712 * that is associated with 'host' but the address/port of
1713 * the callback connection does not have to match it.
1714 * If there is a match, we can use the existing callback
1715 * connection to verify the UUID. If they do not match
1716 * we need to use a new callback connection to verify the
1717 * UUID of the incoming caller and perhaps use the old
1718 * callback connection to verify that the old address/port
1722 cb_conn = host->callback_rxcon;
1723 rx_GetConnection(cb_conn);
1725 if (haddr == host->host && hport == host->port) {
1726 /* The existing callback connection matches the
1727 * incoming connection so just use it.
1730 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1731 if (code == RXGEN_OPCODE)
1732 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1734 /* We do not have a match. Create a new connection
1735 * for the new addr/port and use multi_Rx to probe
1736 * both of them simultaneously.
1739 sc = rxnull_NewClientSecurityObject();
1740 cb_in = rx_NewConnection(haddr, hport, 1, sc, 0);
1741 rx_SetConnDeadTime(cb_in, 50);
1742 rx_SetConnHardDeadTime(cb_in, AFS_HARDDEADTIME);
1745 RXAFSCB_TellMeAboutYourself(cb_in, &interf, &caps);
1746 if (code == RXGEN_OPCODE)
1747 code = RXAFSCB_WhoAreYou(cb_in, &interf);
1749 rx_PutConnection(cb_conn);
1752 if ((code == RXGEN_OPCODE) ||
1753 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1754 identP = (struct Identity *)malloc(sizeof(struct Identity));
1756 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1760 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1761 if (cb_in == NULL) {
1762 /* The host on this connection was unable to respond to
1763 * the WhoAreYou. We will treat this as a new connection
1764 * from the existing host. The worst that can happen is
1765 * that we maintain some extra callback state information */
1766 if (host->interface) {
1768 ("Host %" AFS_PTR_FMT " (%s:%d) used to support WhoAreYou, deleting.\n",
1770 afs_inet_ntoa_r(host->host, hoststr),
1771 ntohs(host->port)));
1772 host->hostFlags |= HOSTDELETED;
1773 host->hostFlags &= ~HWHO_INPROGRESS;
1780 /* The incoming connection does not support WhoAreYou but
1781 * the original one might have. Use removeAddress_r() to
1782 * remove this addr/port from the host that was found.
1783 * If there are no more addresses left for the host it
1784 * will be deleted. Then we retry.
1786 removeAddress_r(host, haddr, hport);
1787 host->hostFlags &= ~HWHO_INPROGRESS;
1788 host->hostFlags |= ALTADDR;
1794 } else if (code == 0) {
1796 identP = (struct Identity *)malloc(sizeof(struct Identity));
1798 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1802 identP->uuid = interf.uuid;
1803 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1804 /* Check whether the UUID on this connection matches
1805 * the UUID in the host structure. If they don't match
1806 * then this is not the same host as before. */
1807 if (!host->interface
1808 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid)) {
1811 ("Uuid doesn't match connection (%s:%d).\n",
1812 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport)));
1813 removeAddress_r(host, haddr, hport);
1816 ("Uuid doesn't match host %" AFS_PTR_FMT " (%s:%d).\n",
1817 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1819 removeAddress_r(host, host->host, host->port);
1821 host->hostFlags &= ~HWHO_INPROGRESS;
1822 host->hostFlags |= ALTADDR;
1828 /* the UUID matched the client at the incoming addr/port
1829 * but this is not the address of the active callback
1830 * connection. Try that connection and see if the client
1831 * is still there and if the reported UUID is the same.
1834 afsUUID uuid = host->interface->uuid;
1835 cb_conn = host->callback_rxcon;
1836 rx_GetConnection(cb_conn);
1837 rx_SetConnDeadTime(cb_conn, 2);
1838 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1840 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1842 rx_SetConnDeadTime(cb_conn, 50);
1843 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1844 rx_PutConnection(cb_conn);
1847 /* The primary address is either not responding or
1848 * is not the client we are looking for. Need to
1849 * remove the primary address and add swap in the new
1850 * callback connection, and destroy the old one.
1852 struct rx_connection *rxconn;
1853 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
1855 afs_inet_ntoa_r(host->host, hoststr),
1856 ntohs(host->port),code2));
1859 * make sure we add and then remove. otherwise, we
1860 * might end up with no valid interfaces after the
1861 * remove and the host will have been marked deleted.
1863 addInterfaceAddr_r(host, haddr, hport);
1864 removeInterfaceAddr_r(host, host->host, host->port);
1867 rxconn = host->callback_rxcon;
1868 host->callback_rxcon = cb_in;
1873 * If rx_DestroyConnection calls h_FreeConnection we
1874 * will deadlock on the host_glock_mutex. Work around
1875 * the problem by unhooking the client from the
1876 * connection before destroying the connection.
1878 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
1879 rx_DestroyConnection(rxconn);
1885 /* A callback to the incoming connection address is failing.
1886 * Assume that the addr/port is no longer associated with the host
1887 * returned by h_Lookup_r.
1890 ("CB: WhoAreYou failed for connection (%s:%d) , error %d\n",
1891 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport), code));
1892 removeAddress_r(host, haddr, hport);
1893 host->hostFlags &= ~HWHO_INPROGRESS;
1894 host->hostFlags |= ALTADDR;
1898 rx_DestroyConnection(cb_in);
1903 ("CB: WhoAreYou failed for host %" AFS_PTR_FMT " (%s:%d), error %d\n",
1904 host, afs_inet_ntoa_r(host->host, hoststr),
1905 ntohs(host->port), code));
1906 host->hostFlags |= VENUSDOWN;
1909 if (caps.Capabilities_val
1910 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1911 host->hostFlags |= HERRORTRANS;
1913 host->hostFlags &= ~(HERRORTRANS);
1914 host->hostFlags |= ALTADDR;
1915 host->hostFlags &= ~HWHO_INPROGRESS;
1918 if (!(host->hostFlags & ALTADDR)) {
1919 /* another thread is doing the initialisation */
1921 ("Host %" AFS_PTR_FMT " (%s:%d) waiting for host-init to complete\n",
1922 host, afs_inet_ntoa_r(host->host, hoststr),
1923 ntohs(host->port)));
1927 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1928 host, afs_inet_ntoa_r(host->host, hoststr),
1929 ntohs(host->port)));
1933 /* We need to check whether the identity in the host structure
1934 * matches the identity on the connection. If they don't match
1935 * then treat this a new host. */
1936 if (!(host->Console & 1)
1937 && ((!identP->valid && host->interface)
1938 || (identP->valid && !host->interface)
1940 && !afs_uuid_equal(&identP->uuid,
1941 &host->interface->uuid)))) {
1942 char uuid1[128], uuid2[128];
1944 afsUUID_to_string(&identP->uuid, uuid1, 127);
1945 if (host->interface)
1946 afsUUID_to_string(&host->interface->uuid, uuid2, 127);
1948 ("CB: new identity for host %p (%s:%d), "
1949 "deleting(%x %p %s %s)\n",
1950 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1951 identP->valid, host->interface,
1952 identP->valid ? uuid1 : "no_uuid",
1953 host->interface ? uuid2 : "no_uuid"));
1955 /* The host in the cache is not the host for this connection */
1957 host->hostFlags |= HOSTDELETED;
1963 host = h_Alloc_r(tcon); /* returned held and locked */
1964 h_gethostcps_r(host, FT_ApproxTime());
1965 if (!(host->Console & 1)) {
1967 cb_conn = host->callback_rxcon;
1968 rx_GetConnection(cb_conn);
1969 host->hostFlags |= HWHO_INPROGRESS;
1972 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1973 if (code == RXGEN_OPCODE)
1974 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1975 rx_PutConnection(cb_conn);
1978 if ((code == RXGEN_OPCODE) ||
1979 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1982 (struct Identity *)malloc(sizeof(struct Identity));
1987 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1992 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1994 ("Host %" AFS_PTR_FMT " (%s:%d) does not support WhoAreYou.\n",
1995 host, afs_inet_ntoa_r(host->host, hoststr),
1996 ntohs(host->port)));
1998 } else if (code == 0) {
2001 (struct Identity *)malloc(sizeof(struct Identity));
2006 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
2011 identP->uuid = interf.uuid;
2013 rx_SetSpecific(tcon, rxcon_ident_key, identP);
2015 ("WhoAreYou success on host %" AFS_PTR_FMT " (%s:%d)\n",
2016 host, afs_inet_ntoa_r(host->host, hoststr),
2017 ntohs(host->port)));
2019 if (code == 0 && !identP->valid) {
2020 cb_conn = host->callback_rxcon;
2021 rx_GetConnection(cb_conn);
2023 code = RXAFSCB_InitCallBackState(cb_conn);
2024 rx_PutConnection(cb_conn);
2027 } else if (code == 0) {
2028 oldHost = h_LookupUuid_r(&identP->uuid);
2033 if (oldHost->hostFlags & HOSTDELETED) {
2034 h_Unlock_r(oldHost);
2035 h_Release_r(oldHost);
2043 oldHost->hostFlags |= HWHO_INPROGRESS;
2045 if (oldHost->interface) {
2047 afsUUID uuid = oldHost->interface->uuid;
2048 cb_conn = oldHost->callback_rxcon;
2049 rx_GetConnection(cb_conn);
2050 rx_SetConnDeadTime(cb_conn, 2);
2051 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
2053 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
2055 rx_SetConnDeadTime(cb_conn, 50);
2056 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
2057 rx_PutConnection(cb_conn);
2060 /* The primary address is either not responding or
2061 * is not the client we are looking for.
2062 * MultiProbeAlternateAddress_r() will remove the
2063 * alternate interfaces that do not have the same
2065 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
2067 afs_inet_ntoa_r(oldHost->host, hoststr),
2068 ntohs(oldHost->port),code2));
2069 MultiProbeAlternateAddress_r(oldHost);
2076 /* This is a new address for an existing host. Update
2077 * the list of interfaces for the existing host and
2078 * delete the host structure we just allocated. */
2080 /* prevent warnings while manipulating interface lists */
2081 host->hostFlags |= HOSTDELETED;
2083 if (oldHost->host != haddr || oldHost->port != hport) {
2084 struct rx_connection *rxconn;
2087 ("CB: Host %" AFS_PTR_FMT " (%s:%d) has new addr %s:%d\n",
2089 afs_inet_ntoa_r(oldHost->host, hoststr2),
2090 ntohs(oldHost->port),
2091 afs_inet_ntoa_r(haddr, hoststr),
2094 * add then remove. otherwise the host may get marked
2095 * deleted if we removed the only valid address.
2097 addInterfaceAddr_r(oldHost, haddr, hport);
2098 if (probefail || oldHost->host == haddr) {
2100 * The probe failed which means that the old
2101 * address is either unreachable or is not the
2102 * same host we were just contacted by. We will
2103 * also remove addresses if only the port has
2104 * changed because that indicates the client
2107 removeInterfaceAddr_r(oldHost, oldHost->host, oldHost->port);
2110 struct Interface *interface = oldHost->interface;
2111 int number = oldHost->interface->numberOfInterfaces;
2112 for (i = 0; i < number; i++) {
2113 if (interface->interface[i].addr == haddr &&
2114 interface->interface[i].port != hport) {
2116 * We have just been contacted by a client
2117 * that has been seen from behind a NAT
2118 * and at least one other address.
2120 removeInterfaceAddr_r(oldHost, haddr,
2121 interface->interface[i].port);
2126 h_AddHostToAddrHashTable_r(haddr, hport, oldHost);
2127 oldHost->host = haddr;
2128 oldHost->port = hport;
2129 rxconn = oldHost->callback_rxcon;
2130 oldHost->callback_rxcon = host->callback_rxcon;
2131 host->callback_rxcon = rxconn;
2133 /* don't destroy rxconn here; let h_TossStuff_r
2134 * take care of that via h_Release_r below */
2136 host->hostFlags &= ~HWHO_INPROGRESS;
2138 /* release host because it was allocated by h_Alloc_r */
2141 /* the new host is held and locked */
2143 /* This really is a new host */
2144 h_AddHostToUuidHashTable_r(&identP->uuid, host);
2145 cb_conn = host->callback_rxcon;
2146 rx_GetConnection(cb_conn);
2149 RXAFSCB_InitCallBackState3(cb_conn,
2151 rx_PutConnection(cb_conn);
2156 ("InitCallBackState3 success on host %" AFS_PTR_FMT " (%s:%d)\n",
2157 host, afs_inet_ntoa_r(host->host, hoststr),
2158 ntohs(host->port)));
2159 assert(interfValid == 1);
2160 initInterfaceAddr_r(host, &interf);
2166 ("CB: RCallBackConnectBack failed for %" AFS_PTR_FMT " (%s:%d)\n",
2167 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
2168 host->hostFlags |= VENUSDOWN;
2171 ("CB: RCallBackConnectBack succeeded for %" AFS_PTR_FMT " (%s:%d)\n",
2172 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
2173 host->hostFlags |= RESETDONE;
2176 if (caps.Capabilities_val
2177 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
2178 host->hostFlags |= HERRORTRANS;
2180 host->hostFlags &= ~(HERRORTRANS);
2181 host->hostFlags |= ALTADDR; /* host structure initialization complete */
2182 host->hostFlags &= ~HWHO_INPROGRESS;
2187 if (caps.Capabilities_val)
2188 free(caps.Capabilities_val);
2189 caps.Capabilities_val = NULL;
2190 caps.Capabilities_len = 0;
2192 rx_DestroyConnection(cb_in);
2200 static char localcellname[PR_MAXNAMELEN + 1];
2201 char local_realms[AFS_NUM_LREALMS][AFS_REALM_SZ];
2202 int num_lrealms = -1;
2206 h_InitHostPackage(void)
2208 memset(&nulluuid, 0, sizeof(afsUUID));
2209 afsconf_GetLocalCell(confDir, localcellname, PR_MAXNAMELEN);
2210 if (num_lrealms == -1) {
2212 for (i=0; i<AFS_NUM_LREALMS; i++) {
2213 if (afs_krb_get_lrealm(local_realms[i], i) != 0 /*KSUCCESS*/)
2219 ("afs_krb_get_lrealm failed, using %s.\n",
2221 strncpy(local_realms[0], localcellname, AFS_REALM_SZ);
2227 /* initialize the rest of the local realms to nullstring for debugging */
2228 for (; i<AFS_NUM_LREALMS; i++)
2229 local_realms[i][0] = '\0';
2231 rxcon_ident_key = rx_KeyCreate((rx_destructor_t) free);
2232 rxcon_client_key = rx_KeyCreate((rx_destructor_t) 0);
2233 #ifdef AFS_PTHREAD_ENV
2234 assert(pthread_mutex_init(&host_glock_mutex, NULL) == 0);
2235 #endif /* AFS_PTHREAD_ENV */
2239 MapName_r(char *aname, char *acell, afs_int32 * aval)
2244 afs_int32 anamelen, cnamelen;
2248 anamelen = strlen(aname);
2249 if (anamelen >= PR_MAXNAMELEN)
2250 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
2252 lnames.namelist_len = 1;
2253 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
2254 lids.idlist_len = 0;
2255 lids.idlist_val = NULL;
2257 cnamelen = strlen(acell);
2259 if (afs_is_foreign_ticket_name(aname, NULL, acell, localcellname)) {
2261 ("MapName: cell is foreign. cell=%s, localcell=%s, localrealms={%s,%s,%s,%s}\n",
2262 acell, localcellname, local_realms[0],local_realms[1],local_realms[2],local_realms[3]));
2263 if ((anamelen + cnamelen + 1) >= PR_MAXNAMELEN) {
2265 ("MapName: Name too long, using AnonymousID for %s@%s\n",
2267 *aval = AnonymousID;
2270 foreign = 1; /* attempt cross-cell authentication */
2271 tname = (char *)malloc(PR_MAXNAMELEN);
2273 ViceLog(0, ("Failed malloc in MapName_r\n"));
2276 strcpy(tname, aname);
2277 tname[anamelen] = '@';
2278 strcpy(tname + anamelen + 1, acell);
2279 lnames.namelist_val = (prname *) tname;
2284 code = hpr_NameToId(&lnames, &lids);
2287 if (lids.idlist_val) {
2288 *aval = lids.idlist_val[0];
2289 if (*aval == AnonymousID) {
2291 ("MapName: NameToId on %s returns anonymousID\n",
2292 lnames.namelist_val[0]));
2294 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
2297 ("MapName: NameToId on '%s' is unknown\n",
2298 lnames.namelist_val[0]));
2304 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
2312 /* NOTE: this returns the client with a Write lock and a refCount */
2314 h_ID2Client(afs_int32 vid)
2316 struct client *client;
2321 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
2322 if (host->hostFlags & HOSTDELETED)
2324 for (client = host->FirstClient; client; client = client->next) {
2325 if (!client->deleted && client->ViceId == vid) {
2328 ObtainWriteLock(&client->lock);
2333 if (count != hostCount) {
2334 ViceLog(0, ("h_ID2Client found %d of %d hosts\n", count, hostCount));
2335 } else if (host != NULL) {
2336 ViceLog(0, ("h_ID2Client found more than %d hosts\n", hostCount));
2337 ShutDownAndCore(PANIC);
2345 * Called by the server main loop. Returns a h_Held client, which must be
2346 * released later the main loop. Allocates a client if the matching one
2347 * isn't around. The client is returned with its reference count incremented
2348 * by one. The caller must call h_ReleaseClient_r when finished with
2351 * The refCount on client->host is returned incremented. h_ReleaseClient_r
2352 * does not decrement the refCount on client->host.
2355 h_FindClient_r(struct rx_connection *tcon)
2357 struct client *client;
2358 struct host *host = NULL;
2359 struct client *oldClient;
2360 afs_int32 viceid = 0;
2364 #if (64-MAXKTCNAMELEN)
2365 ticket name length != 64
2369 char uname[PR_MAXNAMELEN];
2370 char tcell[MAXKTCREALMLEN];
2374 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2375 if (client && client->sid == rxr_CidOf(tcon)
2376 && client->VenusEpoch == rxr_GetEpoch(tcon)
2377 && !(client->host->hostFlags & HOSTDELETED)) {
2380 h_Hold_r(client->host);
2381 if (!client->deleted && client->prfail != 2) {
2382 /* Could add shared lock on client here */
2383 /* note that we don't have to lock entry in this path to
2384 * ensure CPS is initialized, since we don't call rx_SetSpecific
2385 * until initialization is done, and we only get here if
2386 * rx_GetSpecific located the client structure.
2391 ObtainWriteLock(&client->lock); /* released at end */
2397 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
2399 ("FindClient: authenticating connection: authClass=%d\n",
2401 if (authClass == 1) {
2402 /* A bcrypt tickets, no longer supported */
2403 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
2404 viceid = AnonymousID;
2405 expTime = 0x7fffffff;
2406 } else if (authClass == 2) {
2409 /* kerberos ticket */
2410 code = rxkad_GetServerInfo(tcon, /*level */ 0, (afs_uint32 *)&expTime,
2411 tname, tinst, tcell, &kvno);
2413 ViceLog(1, ("Failed to get rxkad ticket info\n"));
2414 viceid = AnonymousID;
2415 expTime = 0x7fffffff;
2417 int ilen = strlen(tinst);
2419 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
2420 tname, tinst, tcell, expTime, kvno));
2421 strncpy(uname, tname, sizeof(uname));
2423 if (strlen(uname) + 1 + ilen >= sizeof(uname))
2426 strcat(uname, tinst);
2428 /* translate the name to a vice id */
2429 code = MapName_r(uname, tcell, &viceid);
2433 ("failed to map name=%s, cell=%s -> code=%d\n", uname,
2436 viceid = AnonymousID;
2437 expTime = 0x7fffffff;
2441 viceid = AnonymousID; /* unknown security class */
2442 expTime = 0x7fffffff;
2445 if (!client) { /* loop */
2446 host = h_GetHost_r(tcon); /* Returns with incremented refCount */
2452 /* First try to find the client structure */
2453 for (client = host->FirstClient; client; client = client->next) {
2454 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2455 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2458 ObtainWriteLock(&client->lock);
2464 /* Still no client structure - get one */
2467 if (host->hostFlags & HOSTDELETED) {
2472 /* Retry to find the client structure */
2473 for (client = host->FirstClient; client; client = client->next) {
2474 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2475 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2477 goto retryfirstclient;
2482 ObtainWriteLock(&client->lock);
2483 client->refCount = 1;
2484 client->host = host;
2485 #if FS_STATS_DETAILED
2486 client->InSameNetwork = host->InSameNetwork;
2487 #endif /* FS_STATS_DETAILED */
2488 client->ViceId = viceid;
2489 client->expTime = expTime; /* rx only */
2490 client->authClass = authClass; /* rx only */
2491 client->sid = rxr_CidOf(tcon);
2492 client->VenusEpoch = rxr_GetEpoch(tcon);
2493 client->CPS.prlist_val = NULL;
2494 client->CPS.prlist_len = 0;
2498 client->prfail = fail;
2500 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
2501 client->CPS.prlist_len = 0;
2502 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID))
2503 free(client->CPS.prlist_val);
2504 client->CPS.prlist_val = NULL;
2505 client->ViceId = viceid;
2506 client->expTime = expTime;
2508 if (viceid == ANONYMOUSID) {
2509 client->CPS.prlist_len = AnonCPS.prlist_len;
2510 client->CPS.prlist_val = AnonCPS.prlist_val;
2513 code = hpr_GetCPS(viceid, &client->CPS);
2518 ("pr_GetCPS failed(%d) for user %d, host %" AFS_PTR_FMT " (%s:%d)\n",
2519 code, viceid, client->host,
2520 afs_inet_ntoa_r(client->host->host,hoststr),
2521 ntohs(client->host->port)));
2523 /* Although ubik_Call (called by pr_GetCPS) traverses thru
2524 * all protection servers and reevaluates things if no
2525 * sync server or quorum is found we could still end up
2526 * with one of these errors. In such case we would like to
2527 * reevaluate the rpc call to find if there's cps for this
2528 * guy. We treat other errors (except network failures
2529 * ones - i.e. code < 0) as an indication that there is no
2530 * CPS for this host. Ideally we could like to deal this
2531 * problem the other way around (i.e. if code == NOCPS
2532 * ignore else retry next time) but the problem is that
2533 * there're other errors (i.e. EPERM) for which we don't
2534 * want to retry and we don't know the whole code list!
2536 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
2540 /* the disabling of system:administrators is so iffy and has so many
2541 * possible failure modes that we will disable it again */
2542 /* Turn off System:Administrator for safety
2543 * if (AL_IsAMember(SystemId, client->CPS) == 0)
2544 * assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
2547 /* Now, tcon may already be set to a rock, since we blocked with no host
2548 * or client locks set above in pr_GetCPS (XXXX some locking is probably
2549 * required). So, before setting the RPC's rock, we should disconnect
2550 * the RPC from the other client structure's rock.
2552 oldClient = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2553 if (oldClient && oldClient != client && oldClient->sid == rxr_CidOf(tcon)
2554 && oldClient->VenusEpoch == rxr_GetEpoch(tcon)) {
2556 if (!oldClient->deleted) {
2557 /* if we didn't create it, it's not ours to put back */
2559 ViceLog(0, ("FindClient: stillborn client %p(%x); "
2560 "conn %p (host %s:%d) had client %p(%x)\n",
2561 client, client->sid, tcon,
2562 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2563 ntohs(rxr_PortOf(tcon)),
2564 oldClient, oldClient->sid));
2565 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2566 free(client->CPS.prlist_val);
2567 client->CPS.prlist_val = NULL;
2568 client->CPS.prlist_len = 0;
2570 /* We should perhaps check for 0 here */
2572 ReleaseWriteLock(&client->lock);
2577 oldClient->refCount++;
2579 ObtainWriteLock(&oldClient->lock);
2583 ViceLog(0, ("FindClient: deleted client %p(%x) already had "
2584 "conn %p (host %s:%d), stolen by client %p(%x)\n",
2585 oldClient, oldClient->sid, tcon,
2586 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2587 ntohs(rxr_PortOf(tcon)),
2588 client, client->sid));
2589 /* rx_SetSpecific will be done immediately below */
2592 /* Avoid chaining in more than once. */
2596 if (host->hostFlags & HOSTDELETED) {
2601 client->host = NULL;
2603 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2604 free(client->CPS.prlist_val);
2605 client->CPS.prlist_val = NULL;
2606 client->CPS.prlist_len = 0;
2609 ReleaseWriteLock(&client->lock);
2614 client->next = host->FirstClient;
2615 host->FirstClient = client;
2617 CurrentConnections++; /* increment number of connections */
2619 rx_SetSpecific(tcon, rxcon_client_key, client);
2620 ReleaseWriteLock(&client->lock);
2624 } /*h_FindClient_r */
2627 h_ReleaseClient_r(struct client *client)
2629 assert(client->refCount > 0);
2636 * Sigh: this one is used to get the client AGAIN within the individual
2637 * server routines. This does not bother h_Holding the host, since
2638 * this is assumed already have been done by the server main loop.
2639 * It does check tokens, since only the server routines can return the
2640 * VICETOKENDEAD error code
2643 GetClient(struct rx_connection *tcon, struct client **cp)
2645 struct client *client;
2650 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2651 if (client == NULL) {
2653 ("GetClient: no client in conn %p (host %s:%d), VBUSYING\n",
2654 tcon, afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2655 ntohs(rxr_PortOf(tcon))));
2659 if (rxr_CidOf(tcon) != client->sid || rxr_GetEpoch(tcon) != client->VenusEpoch) {
2661 ("GetClient: tcon %p tcon sid %d client sid %d\n",
2662 tcon, rxr_CidOf(tcon), client->sid));
2666 if (client && client->LastCall > client->expTime && client->expTime) {
2668 ("Token for %s at %s:%d expired %d\n", h_UserName(client),
2669 afs_inet_ntoa_r(client->host->host, hoststr),
2670 ntohs(client->host->port), client->expTime));
2672 return VICETOKENDEAD;
2682 PutClient(struct client **cp)
2688 h_ReleaseClient_r(*cp);
2695 /* Client user name for short term use. Note that this is NOT inexpensive */
2697 h_UserName(struct client *client)
2699 static char User[PR_MAXNAMELEN + 1];
2703 lids.idlist_len = 1;
2704 lids.idlist_val = (afs_int32 *) malloc(1 * sizeof(afs_int32));
2705 if (!lids.idlist_val) {
2706 ViceLog(0, ("Failed malloc in h_UserName\n"));
2709 lnames.namelist_len = 0;
2710 lnames.namelist_val = (prname *) 0;
2711 lids.idlist_val[0] = client->ViceId;
2712 if (hpr_IdToName(&lids, &lnames)) {
2713 /* We need to free id we alloced above! */
2714 free(lids.idlist_val);
2715 return "*UNKNOWN USER NAME*";
2717 strncpy(User, lnames.namelist_val[0], PR_MAXNAMELEN);
2718 free(lids.idlist_val);
2719 free(lnames.namelist_val);
2728 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
2729 CEs, CEBlocks, HTs, HTBlocks));
2735 h_PrintClient(struct host *host, int flags, void *rock)
2737 StreamHandle_t *file = (StreamHandle_t *)rock;
2738 struct client *client;
2743 time_t LastCall, expTime;
2746 LastCall = host->LastCall;
2747 if (host->hostFlags & HOSTDELETED) {
2751 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2752 "Host %s:%d down = %d, LastCall %s",
2753 afs_inet_ntoa_r(host->host, hoststr),
2754 ntohs(host->port), (host->hostFlags & VENUSDOWN),
2755 afs_ctime(&LastCall, tbuffer,
2757 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2758 for (client = host->FirstClient; client; client = client->next) {
2759 if (!client->deleted) {
2760 expTime = client->expTime;
2761 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2762 " user id=%d, name=%s, sl=%s till %s",
2763 client->ViceId, h_UserName(client),
2765 authClass ? "Authenticated" :
2766 "Not authenticated",
2768 authClass ? afs_ctime(&expTime, tbuffer,
2771 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2772 (void)afs_snprintf(tmpStr, sizeof tmpStr, " CPS-%d is [",
2773 client->CPS.prlist_len);
2774 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2775 if (client->CPS.prlist_val) {
2776 for (i = 0; i > client->CPS.prlist_len; i++) {
2777 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
2778 client->CPS.prlist_val[i]);
2779 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2782 sprintf(tmpStr, "]\n");
2783 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2789 } /*h_PrintClient */
2794 * Print a list of clients, with last security level and token value seen,
2798 h_PrintClients(void)
2804 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
2808 ("Couldn't create client dump file %s\n",
2809 AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2812 now = FT_ApproxTime();
2813 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active users at %s\n",
2814 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
2815 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2816 h_Enumerate(h_PrintClient, (char *)file);
2817 STREAM_REALLYCLOSE(file);
2818 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2825 h_DumpHost(struct host *host, int flags, void *rock)
2827 StreamHandle_t *file = (StreamHandle_t *)rock;
2834 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2835 "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 [",
2836 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port), host->index,
2837 host->cblist, CheckLock(&host->lock), host->LastCall,
2838 host->ActiveCall, (host->hostFlags & VENUSDOWN),
2839 host->hostFlags & HOSTDELETED, host->Console,
2840 host->hostFlags & CLIENTDELETED, host->hcpsfailed,
2842 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2843 if (host->hcps.prlist_val)
2844 for (i = 0; i < host->hcps.prlist_len; i++) {
2845 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
2846 host->hcps.prlist_val[i]);
2847 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2849 sprintf(tmpStr, "] [");
2850 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2851 if (host->interface)
2852 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
2854 sprintf(tmpStr, " %s:%d",
2855 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
2856 ntohs(host->interface->interface[i].port));
2857 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2859 sprintf(tmpStr, "] refCount:%d hostFlags:%hu\n", host->refCount, host->hostFlags);
2860 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2872 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
2878 ("Couldn't create host dump file %s\n",
2879 AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2882 now = FT_ApproxTime();
2883 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active hosts at %s\n",
2884 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
2885 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2886 h_Enumerate(h_DumpHost, (char *)file);
2887 STREAM_REALLYCLOSE(file);
2888 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2892 #ifdef AFS_DEMAND_ATTACH_FS
2895 * host state serialization
2897 static int h_stateFillHeader(struct host_state_header * hdr);
2898 static int h_stateCheckHeader(struct host_state_header * hdr);
2899 static int h_stateAllocMap(struct fs_dump_state * state);
2900 static int h_stateSaveHost(struct host * host, int flags, void *rock);
2901 static int h_stateRestoreHost(struct fs_dump_state * state);
2902 static int h_stateRestoreIndex(struct host * h, int flags, void *rock);
2903 static int h_stateVerifyHost(struct host * h, int flags, void *rock);
2904 static int h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h,
2905 afs_uint32 addr, afs_uint16 port, int valid);
2906 static int h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h);
2907 static void h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out);
2908 static void h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out);
2911 /* this procedure saves all host state to disk for fast startup */
2913 h_stateSave(struct fs_dump_state * state)
2915 AssignInt64(state->eof_offset, &state->hdr->h_offset);
2918 ViceLog(0, ("h_stateSave: hostCount=%d\n", hostCount));
2920 /* invalidate host state header */
2921 memset(state->h_hdr, 0, sizeof(struct host_state_header));
2923 if (fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2924 sizeof(struct host_state_header))) {
2929 fs_stateIncEOF(state, sizeof(struct host_state_header));
2931 h_Enumerate_r(h_stateSaveHost, hostList, (char *)state);
2936 h_stateFillHeader(state->h_hdr);
2938 /* write the real header to disk */
2939 state->bail = fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2940 sizeof(struct host_state_header));
2947 * host state serialization
2949 * this procedure restores all host state from a disk for fast startup
2952 h_stateRestore(struct fs_dump_state * state)
2956 /* seek to the right position and read in the host state header */
2957 if (fs_stateReadHeader(state, &state->hdr->h_offset, state->h_hdr,
2958 sizeof(struct host_state_header))) {
2963 /* check the validity of the header */
2964 if (h_stateCheckHeader(state->h_hdr)) {
2969 records = state->h_hdr->records;
2971 if (h_stateAllocMap(state)) {
2976 /* iterate over records restoring host state */
2977 for (i=0; i < records; i++) {
2978 if (h_stateRestoreHost(state) != 0) {
2989 h_stateRestoreIndices(struct fs_dump_state * state)
2991 h_Enumerate_r(h_stateRestoreIndex, hostList, (char *)state);
2996 h_stateRestoreIndex(struct host * h, int flags, void *rock)
2998 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2999 if (cb_OldToNew(state, h->cblist, &h->cblist)) {
3000 return H_ENUMERATE_BAIL(flags);
3006 h_stateVerify(struct fs_dump_state * state)
3008 h_Enumerate_r(h_stateVerifyHost, hostList, (char *)state);
3013 h_stateVerifyHost(struct host * h, int flags, void* rock)
3015 struct fs_dump_state *state = (struct fs_dump_state *)rock;
3019 ViceLog(0, ("h_stateVerifyHost: error: NULL host pointer in linked list\n"));
3020 return H_ENUMERATE_BAIL(flags);
3024 for (i = h->interface->numberOfInterfaces-1; i >= 0; i--) {
3025 if (h_stateVerifyAddrHash(state, h, h->interface->interface[i].addr,
3026 h->interface->interface[i].port,
3027 h->interface->interface[i].valid)) {
3031 if (h_stateVerifyUuidHash(state, h)) {
3034 } else if (h_stateVerifyAddrHash(state, h, h->host, h->port, 1)) {
3038 if (cb_stateVerifyHCBList(state, h)) {
3046 * verify a host is either in, or absent from, the addr hash table.
3048 * @param[in] state fs dump state
3049 * @param[in] h host we're dealing with
3050 * @param[in] addr addr to look for (NBO)
3051 * @param[in] port port to look for (NBO)
3052 * @param[in] valid 1 if we're verifying that the specified addr and port
3053 * in the hash table point to the specified host. 0 if we're
3054 * verifying that the specified addr and port do NOT point
3055 * to the specified host
3057 * @return operation status
3058 * @retval 1 failed to verify, bail out
3059 * @retval 0 verified successfully, all is well
3062 h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h,
3063 afs_uint32 addr, afs_uint16 port, int valid)
3065 int ret = 0, found = 0;
3066 struct host *host = NULL;
3067 struct h_AddrHashChain *chain;
3068 int index = h_HashIndex(addr);
3072 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
3073 host = chain->hostPtr;
3075 afs_inet_ntoa_r(addr, tmp);
3076 ViceLog(0, ("h_stateVerifyAddrHash: error: addr hash chain has NULL host ptr (lookup addr %s)\n", tmp));
3080 if ((chain->addr == addr) && (chain->port == port)) {
3083 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr hash entry "
3084 "points to different host struct (%d, %d)\n",
3085 h->index, host->index));
3086 state->flags.warnings_generated = 1;
3090 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s:%u is "
3091 "marked invalid, but points to the containing "
3092 "host\n", afs_inet_ntoa_r(addr, tmp),
3093 (unsigned)htons(port)));
3101 if (chain_len > FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN) {
3102 ViceLog(0, ("h_stateVerifyAddrHash: error: hash chain length exceeds %d; assuming there's a loop\n",
3103 FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN));
3110 if (!found && valid) {
3111 afs_inet_ntoa_r(addr, tmp);
3112 if (state->mode == FS_STATE_LOAD_MODE) {
3113 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s:%u not found in hash\n",
3114 tmp, (unsigned)htons(port)));
3118 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr %s:%u not found in hash\n",
3119 tmp, (unsigned)htons(port)));
3120 state->flags.warnings_generated = 1;
3129 h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h)
3131 int ret = 0, found = 0;
3132 struct host *host = NULL;
3133 struct h_UuidHashChain *chain;
3134 afsUUID * uuidp = &h->interface->uuid;
3135 int index = h_UuidHashIndex(uuidp);
3139 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
3140 host = chain->hostPtr;
3142 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
3143 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid hash chain has NULL host ptr (lookup uuid %s)\n", tmp));
3147 if (host->interface &&
3148 afs_uuid_equal(&host->interface->uuid, uuidp)) {
3150 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid hash entry points to different host struct (%d, %d)\n",
3151 h->index, host->index));
3152 state->flags.warnings_generated = 1;
3157 if (chain_len > FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN) {
3158 ViceLog(0, ("h_stateVerifyUuidHash: error: hash chain length exceeds %d; assuming there's a loop\n",
3159 FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN));
3167 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
3168 if (state->mode == FS_STATE_LOAD_MODE) {
3169 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid %s not found in hash\n", tmp));
3173 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid %s not found in hash\n", tmp));
3174 state->flags.warnings_generated = 1;
3182 /* create the host state header structure */
3184 h_stateFillHeader(struct host_state_header * hdr)
3186 hdr->stamp.magic = HOST_STATE_MAGIC;
3187 hdr->stamp.version = HOST_STATE_VERSION;
3191 /* check the contents of the host state header structure */
3193 h_stateCheckHeader(struct host_state_header * hdr)
3197 if (hdr->stamp.magic != HOST_STATE_MAGIC) {
3198 ViceLog(0, ("check_host_state_header: invalid state header\n"));
3201 else if (hdr->stamp.version != HOST_STATE_VERSION) {
3202 ViceLog(0, ("check_host_state_header: unknown version number\n"));
3208 /* allocate the host id mapping table */
3210 h_stateAllocMap(struct fs_dump_state * state)
3212 state->h_map.len = state->h_hdr->index_max + 1;
3213 state->h_map.entries = (struct idx_map_entry_t *)
3214 calloc(state->h_map.len, sizeof(struct idx_map_entry_t));
3215 return (state->h_map.entries != NULL) ? 0 : 1;
3218 /* function called by h_Enumerate to save a host to disk */
3220 h_stateSaveHost(struct host * host, int flags, void* rock)
3222 struct fs_dump_state *state = (struct fs_dump_state *) rock;
3223 int if_len=0, hcps_len=0;
3224 struct hostDiskEntry hdsk;
3225 struct host_state_entry_header hdr;
3226 struct Interface * ifp = NULL;
3227 afs_int32 * hcps = NULL;
3228 struct iovec iov[4];
3231 memset(&hdr, 0, sizeof(hdr));
3233 if (state->h_hdr->index_max < host->index) {
3234 state->h_hdr->index_max = host->index;
3237 h_hostToDiskEntry_r(host, &hdsk);
3238 if (host->interface) {
3239 if_len = sizeof(struct Interface) +
3240 ((host->interface->numberOfInterfaces-1) * sizeof(struct AddrPort));
3241 ifp = (struct Interface *) malloc(if_len);
3242 assert(ifp != NULL);
3243 memcpy(ifp, host->interface, if_len);
3244 hdr.interfaces = host->interface->numberOfInterfaces;
3245 iov[iovcnt].iov_base = (char *) ifp;
3246 iov[iovcnt].iov_len = if_len;
3249 if (host->hcps.prlist_val) {
3250 hdr.hcps = host->hcps.prlist_len;
3251 hcps_len = hdr.hcps * sizeof(afs_int32);
3252 hcps = (afs_int32 *) malloc(hcps_len);
3253 assert(hcps != NULL);
3254 memcpy(hcps, host->hcps.prlist_val, hcps_len);
3255 iov[iovcnt].iov_base = (char *) hcps;
3256 iov[iovcnt].iov_len = hcps_len;
3260 if (hdsk.index > state->h_hdr->index_max)
3261 state->h_hdr->index_max = hdsk.index;
3263 hdr.len = sizeof(struct host_state_entry_header) +
3264 sizeof(struct hostDiskEntry) + if_len + hcps_len;
3265 hdr.magic = HOST_STATE_ENTRY_MAGIC;
3267 iov[0].iov_base = (char *) &hdr;
3268 iov[0].iov_len = sizeof(hdr);
3269 iov[1].iov_base = (char *) &hdsk;
3270 iov[1].iov_len = sizeof(struct hostDiskEntry);
3272 if (fs_stateWriteV(state, iov, iovcnt)) {
3273 ViceLog(0, ("h_stateSaveHost: failed to save host %d", host->index));
3277 fs_stateIncEOF(state, hdr.len);
3279 state->h_hdr->records++;
3286 return H_ENUMERATE_BAIL(flags);
3291 /* restores a host from disk */
3293 h_stateRestoreHost(struct fs_dump_state * state)
3295 int ifp_len=0, hcps_len=0, bail=0;
3296 struct host_state_entry_header hdr;
3297 struct hostDiskEntry hdsk;
3298 struct host *host = NULL;
3299 struct Interface *ifp = NULL;
3300 afs_int32 * hcps = NULL;
3301 struct iovec iov[3];
3304 if (fs_stateRead(state, &hdr, sizeof(hdr))) {
3305 ViceLog(0, ("h_stateRestoreHost: failed to read host entry header from dump file '%s'\n",
3311 if (hdr.magic != HOST_STATE_ENTRY_MAGIC) {
3312 ViceLog(0, ("h_stateRestoreHost: fileserver state dump file '%s' is corrupt.\n",
3318 iov[0].iov_base = (char *) &hdsk;
3319 iov[0].iov_len = sizeof(struct hostDiskEntry);
3321 if (hdr.interfaces) {
3322 ifp_len = sizeof(struct Interface) +
3323 ((hdr.interfaces-1) * sizeof(struct AddrPort));
3324 ifp = (struct Interface *) malloc(ifp_len);
3325 assert(ifp != NULL);
3326 iov[iovcnt].iov_base = (char *) ifp;
3327 iov[iovcnt].iov_len = ifp_len;
3331 hcps_len = hdr.hcps * sizeof(afs_int32);
3332 hcps = (afs_int32 *) malloc(hcps_len);
3333 assert(hcps != NULL);
3334 iov[iovcnt].iov_base = (char *) hcps;
3335 iov[iovcnt].iov_len = hcps_len;
3339 if ((ifp_len + hcps_len + sizeof(hdsk) + sizeof(hdr)) != hdr.len) {
3340 ViceLog(0, ("h_stateRestoreHost: host entry header length fields are inconsistent\n"));
3345 if (fs_stateReadV(state, iov, iovcnt)) {
3346 ViceLog(0, ("h_stateRestoreHost: failed to read host entry\n"));
3351 if (!hdr.hcps && hdsk.hcps_valid) {
3352 /* valid, zero-length host cps ; does this ever happen? */
3353 hcps = (afs_int32 *) malloc(sizeof(afs_int32));
3354 assert(hcps != NULL);
3358 assert(host != NULL);
3361 host->interface = ifp;
3364 host->hcps.prlist_val = hcps;
3365 host->hcps.prlist_len = hdr.hcps;
3368 h_diskEntryToHost_r(&hdsk, host);
3369 h_SetupCallbackConn_r(host);
3371 h_AddHostToAddrHashTable_r(host->host, host->port, host);
3374 for (i = ifp->numberOfInterfaces-1; i >= 0; i--) {
3375 if (ifp->interface[i].valid &&
3376 !(ifp->interface[i].addr == host->host &&
3377 ifp->interface[i].port == host->port)) {
3378 h_AddHostToAddrHashTable_r(ifp->interface[i].addr,
3379 ifp->interface[i].port,
3383 h_AddHostToUuidHashTable_r(&ifp->uuid, host);
3385 h_InsertList_r(host);
3387 /* setup host id map entry */
3388 state->h_map.entries[hdsk.index].old_idx = hdsk.index;
3389 state->h_map.entries[hdsk.index].new_idx = host->index;
3401 /* serialize a host structure to disk */
3403 h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out)
3405 out->host = in->host;
3406 out->port = in->port;
3407 out->hostFlags = in->hostFlags;
3408 out->Console = in->Console;
3409 out->hcpsfailed = in->hcpsfailed;
3410 out->LastCall = in->LastCall;
3411 out->ActiveCall = in->ActiveCall;
3412 out->cpsCall = in->cpsCall;
3413 out->cblist = in->cblist;
3414 #ifdef FS_STATS_DETAILED
3415 out->InSameNetwork = in->InSameNetwork;
3418 /* special fields we save, but are not memcpy'd back on restore */
3419 out->index = in->index;
3420 out->hcps_len = in->hcps.prlist_len;
3421 out->hcps_valid = (in->hcps.prlist_val == NULL) ? 0 : 1;
3424 /* restore a host structure from disk */
3426 h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out)
3428 out->host = in->host;
3429 out->port = in->port;
3430 out->hostFlags = in->hostFlags;
3431 out->Console = in->Console;
3432 out->hcpsfailed = in->hcpsfailed;
3433 out->LastCall = in->LastCall;
3434 out->ActiveCall = in->ActiveCall;
3435 out->cpsCall = in->cpsCall;
3436 out->cblist = in->cblist;
3437 #ifdef FS_STATS_DETAILED
3438 out->InSameNetwork = in->InSameNetwork;
3442 /* index translation routines */
3444 h_OldToNew(struct fs_dump_state * state, afs_uint32 old, afs_uint32 * new)
3448 /* hosts use a zero-based index, so old==0 is valid */
3450 if (old >= state->h_map.len) {
3451 ViceLog(0, ("h_OldToNew: index %d is out of range\n", old));
3453 } else if (state->h_map.entries[old].old_idx != old) { /* sanity check */
3454 ViceLog(0, ("h_OldToNew: index %d points to an invalid host record\n", old));
3457 *new = state->h_map.entries[old].new_idx;
3462 #endif /* AFS_DEMAND_ATTACH_FS */
3466 * This counts the number of workstations, the number of active workstations,
3467 * and the number of workstations declared "down" (i.e. not heard from
3468 * recently). An active workstation has received a call since the cutoff
3469 * time argument passed.
3472 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
3475 int num = 0, active = 0, del = 0;
3479 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
3480 if (!(host->hostFlags & HOSTDELETED)) {
3482 if (host->ActiveCall > cutofftime)
3484 if (host->hostFlags & VENUSDOWN)
3488 if (count != hostCount) {
3489 ViceLog(0, ("h_GetWorkStats found %d of %d hosts\n", count, hostCount));
3490 } else if (host != NULL) {
3491 ViceLog(0, ("h_GetWorkStats found more than %d hosts\n", hostCount));
3492 ShutDownAndCore(PANIC);
3502 } /*h_GetWorkStats */
3505 h_GetWorkStats64(afs_uint64 *nump, afs_uint64 *activep, afs_uint64 *delp,
3506 afs_int32 cutofftime)
3508 int num, active, del;
3509 h_GetWorkStats(&num, &active, &del, cutofftime);
3518 /*------------------------------------------------------------------------
3519 * PRIVATE h_ClassifyAddress
3522 * Given a target IP address and a candidate IP address (both
3523 * in host byte order), classify the candidate into one of three
3524 * buckets in relation to the target by bumping the counters passed
3528 * a_targetAddr : Target address.
3529 * a_candAddr : Candidate address.
3530 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
3531 * addresses are either in the same network
3532 * or the same subnet.
3533 * a_diffSubnetP : ...when the candidate is in a different
3535 * a_diffNetworkP : ...when the candidate is in a different
3542 * The target and candidate addresses are both in host byte
3543 * order, NOT network byte order, when passed in.
3547 *------------------------------------------------------------------------*/
3550 h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
3551 afs_int32 * a_sameNetOrSubnetP, afs_int32 * a_diffSubnetP,
3552 afs_int32 * a_diffNetworkP)
3553 { /*h_ClassifyAddress */
3555 afs_uint32 targetNet;
3556 afs_uint32 targetSubnet;
3558 afs_uint32 candSubnet;
3561 * Put bad values into the subnet info to start with.
3563 targetSubnet = (afs_uint32) 0;
3564 candSubnet = (afs_uint32) 0;
3567 * Pull out the network and subnetwork numbers from the target
3568 * and candidate addresses. We can short-circuit this whole
3569 * affair if the target and candidate addresses are not of the
3572 if (IN_CLASSA(a_targetAddr)) {
3573 if (!(IN_CLASSA(a_candAddr))) {
3574 (*a_diffNetworkP)++;
3577 targetNet = a_targetAddr & IN_CLASSA_NET;
3578 candNet = a_candAddr & IN_CLASSA_NET;
3579 if (IN_SUBNETA(a_targetAddr))
3580 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
3581 if (IN_SUBNETA(a_candAddr))
3582 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
3583 } else if (IN_CLASSB(a_targetAddr)) {
3584 if (!(IN_CLASSB(a_candAddr))) {
3585 (*a_diffNetworkP)++;
3588 targetNet = a_targetAddr & IN_CLASSB_NET;
3589 candNet = a_candAddr & IN_CLASSB_NET;
3590 if (IN_SUBNETB(a_targetAddr))
3591 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
3592 if (IN_SUBNETB(a_candAddr))
3593 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
3594 } /*Class B target */
3595 else if (IN_CLASSC(a_targetAddr)) {
3596 if (!(IN_CLASSC(a_candAddr))) {
3597 (*a_diffNetworkP)++;
3600 targetNet = a_targetAddr & IN_CLASSC_NET;
3601 candNet = a_candAddr & IN_CLASSC_NET;
3604 * Note that class C addresses can't have subnets,
3605 * so we leave the defaults untouched.
3607 } /*Class C target */
3609 targetNet = a_targetAddr;
3610 candNet = a_candAddr;
3611 } /*Class D address */
3614 * Now, simply compare the extracted net and subnet values for
3615 * the two addresses (which at this point are known to be of the
3618 if (targetNet == candNet) {
3619 if (targetSubnet == candSubnet)
3620 (*a_sameNetOrSubnetP)++;
3624 (*a_diffNetworkP)++;
3626 } /*h_ClassifyAddress */
3629 /*------------------------------------------------------------------------
3630 * EXPORTED h_GetHostNetStats
3633 * Iterate through the host table, and classify each (non-deleted)
3634 * host entry into ``proximity'' categories (same net or subnet,
3635 * different subnet, different network).
3638 * a_numHostsP : Set to total number of (non-deleted) hosts.
3639 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
3640 * a_diffSubnetP : Set to # hosts on diff subnet as server.
3641 * a_diffNetworkP : Set to # hosts on diff network as server.
3647 * We only count non-deleted hosts. The storage pointed to by our
3648 * parameters is zeroed upon entry.
3652 *------------------------------------------------------------------------*/
3655 h_GetHostNetStats(afs_int32 * a_numHostsP, afs_int32 * a_sameNetOrSubnetP,
3656 afs_int32 * a_diffSubnetP, afs_int32 * a_diffNetworkP)
3657 { /*h_GetHostNetStats */
3659 struct host *hostP; /*Ptr to current host entry */
3660 afs_uint32 currAddr_HBO; /*Curr host addr, host byte order */
3664 * Clear out the storage pointed to by our parameters.
3666 *a_numHostsP = (afs_int32) 0;
3667 *a_sameNetOrSubnetP = (afs_int32) 0;
3668 *a_diffSubnetP = (afs_int32) 0;
3669 *a_diffNetworkP = (afs_int32) 0;
3672 for (count = 0, hostP = hostList; hostP && count < hostCount; hostP = hostP->next, count++) {
3673 if (!(hostP->hostFlags & HOSTDELETED)) {
3675 * Bump the number of undeleted host entries found.
3676 * In classifying the current entry's address, make
3677 * sure to first convert to host byte order.
3680 currAddr_HBO = (afs_uint32) ntohl(hostP->host);
3681 h_ClassifyAddress(FS_HostAddr_HBO, currAddr_HBO,
3682 a_sameNetOrSubnetP, a_diffSubnetP,
3684 } /*Only look at non-deleted hosts */
3685 } /*For each host record hashed to this index */
3686 if (count != hostCount) {
3687 ViceLog(0, ("h_GetHostNetStats found %d of %d hosts\n", count, hostCount));
3688 } else if (hostP != NULL) {
3689 ViceLog(0, ("h_GetHostNetStats found more than %d hosts\n", hostCount));
3690 ShutDownAndCore(PANIC);
3693 } /*h_GetHostNetStats */
3695 static afs_uint32 checktime;
3696 static afs_uint32 clientdeletetime;
3697 static struct AFSFid zerofid;
3701 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
3702 * Since it can serialize them, and pile up, it should be a separate LWP
3703 * from other events.
3707 CheckHost(struct host *host, int flags, void *rock)
3709 struct client *client;
3710 struct rx_connection *cb_conn = NULL;
3713 #ifdef AFS_DEMAND_ATTACH_FS
3714 /* kill the checkhost lwp ASAP during shutdown */
3716 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3718 return H_ENUMERATE_BAIL(flags);
3723 /* Host is held by h_Enumerate */
3725 for (client = host->FirstClient; client; client = client->next) {
3726 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3727 client->deleted = 1;
3728 host->hostFlags |= CLIENTDELETED;
3731 if (host->LastCall < checktime) {
3733 if (!(host->hostFlags & HOSTDELETED)) {
3734 host->hostFlags |= HWHO_INPROGRESS;
3735 cb_conn = host->callback_rxcon;
3736 rx_GetConnection(cb_conn);
3737 if (host->LastCall < clientdeletetime) {
3738 host->hostFlags |= HOSTDELETED;
3739 if (!(host->hostFlags & VENUSDOWN)) {
3740 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3741 if (host->interface) {
3744 RXAFSCB_InitCallBackState3(cb_conn,
3750 RXAFSCB_InitCallBackState(cb_conn);
3753 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3756 (void)afs_inet_ntoa_r(host->host, hoststr);
3758 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3759 hoststr, ntohs(host->port)));
3760 host->hostFlags |= VENUSDOWN;
3762 /* Note: it's safe to delete hosts even if they have call
3763 * back state, because break delayed callbacks (called when a
3764 * message is received from the workstation) will always send a
3765 * break all call backs to the workstation if there is no
3770 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3772 (void)afs_inet_ntoa_r(host->host, hoststr);
3773 if (host->interface) {
3774 afsUUID uuid = host->interface->uuid;
3776 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3779 if (MultiProbeAlternateAddress_r(host)) {
3780 ViceLog(0,("CheckHost: Probing all interfaces of host %s:%d failed, code %d\n",
3781 hoststr, ntohs(host->port), code));
3782 host->hostFlags |= VENUSDOWN;
3787 code = RXAFSCB_Probe(cb_conn);
3791 ("CheckHost: Probe failed for host %s:%d, code %d\n",
3792 hoststr, ntohs(host->port), code));
3793 host->hostFlags |= VENUSDOWN;
3799 rx_PutConnection(cb_conn);
3802 host->hostFlags &= ~HWHO_INPROGRESS;
3813 CheckHost_r(struct host *host, int flags, void *dummy)
3815 struct client *client;
3816 struct rx_connection *cb_conn = NULL;
3819 #ifdef AFS_DEMAND_ATTACH_FS
3820 /* kill the checkhost lwp ASAP during shutdown */
3822 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3824 return H_ENUMERATE_BAIL(flags);
3829 /* Host is held by h_Enumerate_r */
3830 for (client = host->FirstClient; client; client = client->next) {
3831 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3832 client->deleted = 1;
3833 host->hostFlags |= CLIENTDELETED;
3836 if (host->LastCall < checktime) {
3838 if (!(host->hostFlags & HOSTDELETED)) {
3839 cb_conn = host->callback_rxcon;
3840 rx_GetConnection(cb_conn);
3841 if (host->LastCall < clientdeletetime) {
3842 host->hostFlags |= HOSTDELETED;
3843 if (!(host->hostFlags & VENUSDOWN)) {
3844 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3845 if (host->interface) {
3848 RXAFSCB_InitCallBackState3(cb_conn,
3854 RXAFSCB_InitCallBackState(cb_conn);
3857 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3860 (void)afs_inet_ntoa_r(host->host, hoststr);
3862 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3863 hoststr, ntohs(host->port)));
3864 host->hostFlags |= VENUSDOWN;
3866 /* Note: it's safe to delete hosts even if they have call
3867 * back state, because break delayed callbacks (called when a
3868 * message is received from the workstation) will always send a
3869 * break all call backs to the workstation if there is no
3874 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3876 (void)afs_inet_ntoa_r(host->host, hoststr);
3877 if (host->interface) {
3878 afsUUID uuid = host->interface->uuid;
3880 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3883 if (MultiProbeAlternateAddress_r(host)) {
3884 ViceLog(0,("CheckHost_r: Probing all interfaces of host %s:%d failed, code %d\n",
3885 hoststr, ntohs(host->port), code));
3886 host->hostFlags |= VENUSDOWN;
3891 code = RXAFSCB_Probe(cb_conn);
3895 ("CheckHost_r: Probe failed for host %s:%d, code %d\n",
3896 hoststr, ntohs(host->port), code));
3897 host->hostFlags |= VENUSDOWN;
3903 rx_PutConnection(cb_conn);
3915 * Set VenusDown for any hosts that have not had a call in 15 minutes and
3916 * don't respond to a probe. Note that VenusDown can only be cleared if
3917 * a message is received from the host (see ServerLWP in file.c).
3918 * Delete hosts that have not had any calls in 1 hour, clients that
3919 * have not had any calls in 15 minutes.
3921 * This routine is called roughly every 5 minutes.
3926 afs_uint32 now = FT_ApproxTime();
3928 memset(&zerofid, 0, sizeof(zerofid));
3930 * Send a probe to the workstation if it hasn't been heard from in
3933 checktime = now - 15 * 60;
3934 clientdeletetime = now - 120 * 60; /* 2 hours ago */
3937 h_Enumerate_r(CheckHost_r, hostList, NULL);
3942 * This is called with host locked and held. At this point, the
3943 * hostAddrHashTable has an entry for the primary addr/port inserted
3944 * by h_Alloc_r(). No other interfaces should be considered valid.
3946 * The addresses in the interfaceAddr list are in host byte order.
3949 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
3956 struct Interface *interface;
3959 afs_uint16 port7001 = htons(7001);
3964 number = interf->numberOfInterfaces;
3965 myAddr = host->host; /* current interface address */
3966 myPort = host->port; /* current port */
3969 ("initInterfaceAddr : host %s:%d numAddr %d\n",
3970 afs_inet_ntoa_r(myAddr, hoststr), ntohs(myPort), number));
3972 /* validation checks */
3973 if (number < 0 || number > AFS_MAX_INTERFACE_ADDR) {
3975 ("Invalid number of alternate addresses is %d\n", number));
3980 * The client's notion of its own IP addresses is not reliable.
3982 * 1. The client list might contain private address ranges which
3983 * are likely to be re-used by many clients allocated addresses
3986 * 2. The client list will not include any public addresses that
3987 * are hidden by a NAT.
3989 * 3. Private address ranges that are exposed to the server will
3990 * be obtained from the rx connections that use them.
3992 * 4. Lists provided by the client are not necessarily truthful.
3993 * Many existing clients (UNIX) do not refresh the IP address
3994 * list as the actual assigned addresses change. The end result
3995 * is that they report the initial address list for the lifetime
3996 * of the process. In other words, a client can report addresses
3997 * that they are in fact not using. Adding these addresses to
3998 * the host interface list without verification is not only
3999 * pointless, it is downright dangerous.
4001 * We therefore do not add alternate addresses to the addr hash table.
4002 * We only use them for multi-rx callback breaks.
4006 * Convert IP addresses to network byte order, and remove
4007 * duplicate IP addresses from the interface list, and
4008 * determine whether or not the incoming addr/port is
4009 * listed. Note that if the address matches it is not
4010 * truly a match because the port number for the entries
4011 * in the interface list are port 7001 and the port number
4012 * for this connection might not be 7001.
4014 for (i = 0, count = 0, found = 0; i < number; i++) {
4015 interf->addr_in[i] = htonl(interf->addr_in[i]);
4016 for (j = 0; j < count; j++) {
4017 if (interf->addr_in[j] == interf->addr_in[i])
4021 interf->addr_in[count] = interf->addr_in[i];
4022 if (interf->addr_in[count] == myAddr &&
4030 * Allocate and initialize an interface structure for this host.
4033 interface = (struct Interface *)
4034 malloc(sizeof(struct Interface) +
4035 (sizeof(struct AddrPort) * (count - 1)));
4037 ViceLog(0, ("Failed malloc in initInterfaceAddr_r 1\n"));
4040 interface->numberOfInterfaces = count;
4042 interface = (struct Interface *)
4043 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * count));
4045 ViceLog(0, ("Failed malloc in initInterfaceAddr_r 2\n"));
4048 interface->numberOfInterfaces = count + 1;
4049 interface->interface[count].addr = myAddr;
4050 interface->interface[count].port = myPort;
4051 interface->interface[count].valid = 1;
4054 for (i = 0; i < count; i++) {
4056 interface->interface[i].addr = interf->addr_in[i];
4057 /* We store the port as 7001 because the addresses reported by
4058 * TellMeAboutYourself and WhoAreYou RPCs are only valid if they
4059 * are coming from fully connected hosts (no NAT/PATs)
4061 interface->interface[i].port = port7001;
4062 interface->interface[i].valid =
4063 (interf->addr_in[i] == myAddr && port7001 == myPort) ? 1 : 0;
4066 interface->uuid = interf->uuid;
4068 assert(!host->interface);
4069 host->interface = interface;
4071 if (LogLevel >= 125) {
4072 afsUUID_to_string(&interface->uuid, uuidstr, 127);
4074 ViceLog(125, ("--- uuid %s\n", uuidstr));
4075 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
4076 ViceLog(125, ("--- alt address %s:%d\n",
4077 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
4078 ntohs(host->interface->interface[i].port)));
4085 /* deleted a HashChain structure for this address and host */
4086 /* returns 1 on success */
4088 h_DeleteHostFromAddrHashTable_r(afs_uint32 addr, afs_uint16 port,
4092 struct h_AddrHashChain **hp, *th;
4094 if (addr == 0 && port == 0)
4097 for (hp = &hostAddrHashTable[h_HashIndex(addr)]; (th = *hp);
4099 assert(th->hostPtr);
4100 if (th->hostPtr == host && th->addr == addr && th->port == port) {
4101 ViceLog(125, ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d)\n",
4102 host, afs_inet_ntoa_r(host->host, hoststr),
4103 ntohs(host->port)));
4110 ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) not found\n",
4111 host, afs_inet_ntoa_r(host->host, hoststr),
4112 ntohs(host->port)));
4118 ** prints out all alternate interface address for the host. The 'level'
4119 ** parameter indicates what level of debugging sets this output
4122 printInterfaceAddr(struct host *host, int level)
4127 if (host->interface) {
4128 /* check alternate addresses */
4129 number = host->interface->numberOfInterfaces;
4131 ViceLog(level, ("no-addresses "));
4133 for (i = 0; i < number; i++)
4134 ViceLog(level, ("%s:%d ", afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
4135 ntohs(host->interface->interface[i].port)));
4138 ViceLog(level, ("\n"));