2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
9 * Portions Copyright (c) 2006 Sine Nomine Associates
12 #include <afsconfig.h>
13 #include <afs/param.h>
25 #include <netinet/in.h>
30 #include <afs/assert.h>
33 #include <afs/afsint.h>
34 #define FSINT_COMMON_XG
35 #include <afs/afscbint.h>
36 #include <afs/rxgen_consts.h>
38 #include <afs/errors.h>
39 #include <afs/ihandle.h>
40 #include <afs/vnode.h>
41 #include <afs/volume.h>
42 #ifdef AFS_ATHENA_STDENV
46 #include <afs/ptclient.h>
47 #include <afs/ptuser.h>
48 #include <afs/prs_fs.h>
50 #include <afs/afsutil.h>
51 #include <afs/com_err.h>
53 #include <afs/cellconfig.h>
55 #include "viced_prototypes.h"
59 #ifdef AFS_DEMAND_ATTACH_FS
60 #include "../util/afsutil_prototypes.h"
61 #include "../tviced/serialize_state.h"
62 #endif /* AFS_DEMAND_ATTACH_FS */
64 #ifdef AFS_PTHREAD_ENV
65 pthread_mutex_t host_glock_mutex;
66 #endif /* AFS_PTHREAD_ENV */
69 extern int CurrentConnections;
71 extern int AnonymousID;
72 extern prlist AnonCPS;
74 extern struct afsconf_dir *confDir; /* config dir object */
75 extern int lwps; /* the max number of server threads */
76 extern afsUUID FS_HostUUID;
79 int CEs = 0; /* active clients */
80 int CEBlocks = 0; /* number of blocks of CEs */
81 struct client *CEFree = 0; /* first free client */
82 struct host *hostList = 0; /* linked list of all hosts */
83 int hostCount = 0; /* number of hosts in hostList */
87 static struct rx_securityClass *sc = NULL;
89 static void h_SetupCallbackConn_r(struct host * host);
90 static int h_threadquota(int);
92 #define CESPERBLOCK 73
93 struct CEBlock { /* block of CESPERBLOCK file entries */
94 struct client entry[CESPERBLOCK];
97 void h_TossStuff_r(register struct host *host);
100 * Make sure the subnet macros have been defined.
103 #define IN_SUBNETA(i) ((((afs_int32)(i))&0x80800000)==0x00800000)
106 #ifndef IN_CLASSA_SUBNET
107 #define IN_CLASSA_SUBNET 0xffff0000
111 #define IN_SUBNETB(i) ((((afs_int32)(i))&0xc0008000)==0x80008000)
114 #ifndef IN_CLASSB_SUBNET
115 #define IN_CLASSB_SUBNET 0xffffff00
119 /* get a new block of CEs and chain it on CEFree */
123 register struct CEBlock *block;
126 block = (struct CEBlock *)malloc(sizeof(struct CEBlock));
128 ViceLog(0, ("Failed malloc in GetCEBlock\n"));
129 ShutDownAndCore(PANIC);
132 for (i = 0; i < (CESPERBLOCK - 1); i++) {
133 Lock_Init(&block->entry[i].lock);
134 block->entry[i].next = &(block->entry[i + 1]);
136 block->entry[CESPERBLOCK - 1].next = 0;
137 Lock_Init(&block->entry[CESPERBLOCK - 1].lock);
138 CEFree = (struct client *)block;
144 /* get the next available CE */
145 static struct client *
148 register struct client *entry;
153 ViceLog(0, ("CEFree NULL in GetCE\n"));
154 ShutDownAndCore(PANIC);
158 CEFree = entry->next;
160 memset(entry, 0, CLIENT_TO_ZERO(entry));
166 /* return an entry to the free list */
168 FreeCE(register struct client *entry)
170 entry->VenusEpoch = 0;
172 entry->next = CEFree;
179 * The HTs and HTBlocks variables were formerly static, but they are
180 * now referenced elsewhere in the FileServer.
182 int HTs = 0; /* active file entries */
183 int HTBlocks = 0; /* number of blocks of HTs */
184 static struct host *HTFree = 0; /* first free file entry */
187 * Hash tables of host pointers. We need two tables, one
188 * to map IP addresses onto host pointers, and another
189 * to map host UUIDs onto host pointers.
191 static struct h_AddrHashChain *hostAddrHashTable[h_HASHENTRIES];
192 static struct h_UuidHashChain *hostUuidHashTable[h_HASHENTRIES];
193 #define h_HashIndex(hostip) (ntohl(hostip) & (h_HASHENTRIES-1))
194 #define h_UuidHashIndex(uuidp) (((int)(afs_uuid_hash(uuidp))) & (h_HASHENTRIES-1))
196 struct HTBlock { /* block of HTSPERBLOCK file entries */
197 struct host entry[h_HTSPERBLOCK];
201 /* get a new block of HTs and chain it on HTFree */
205 register struct HTBlock *block;
207 static int index = 0;
209 if (HTBlocks == h_MAXHOSTTABLES) {
210 ViceLog(0, ("h_MAXHOSTTABLES reached\n"));
211 ShutDownAndCore(PANIC);
214 block = (struct HTBlock *)malloc(sizeof(struct HTBlock));
216 ViceLog(0, ("Failed malloc in GetHTBlock\n"));
217 ShutDownAndCore(PANIC);
219 #ifdef AFS_PTHREAD_ENV
220 for (i = 0; i < (h_HTSPERBLOCK); i++)
221 assert(pthread_cond_init(&block->entry[i].cond, NULL) == 0);
222 #endif /* AFS_PTHREAD_ENV */
223 for (i = 0; i < (h_HTSPERBLOCK); i++)
224 Lock_Init(&block->entry[i].lock);
225 for (i = 0; i < (h_HTSPERBLOCK - 1); i++)
226 block->entry[i].next = &(block->entry[i + 1]);
227 for (i = 0; i < (h_HTSPERBLOCK); i++)
228 block->entry[i].index = index++;
229 block->entry[h_HTSPERBLOCK - 1].next = 0;
230 HTFree = (struct host *)block;
231 hosttableptrs[HTBlocks++] = block->entry;
236 /* get the next available HT */
240 register struct host *entry;
244 assert(HTFree != NULL);
246 HTFree = entry->next;
248 memset(entry, 0, HOST_TO_ZERO(entry));
254 /* return an entry to the free list */
256 FreeHT(register struct host *entry)
258 entry->next = HTFree;
265 hpr_Initialize(struct ubik_client **uclient)
268 struct rx_connection *serverconns[MAXSERVERS];
269 struct rx_securityClass *sc;
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 = 0; /* use noauth */
314 afsconf_ClientAuthToken(&info, 0, &sc, &scIndex, NULL);
316 if ((scIndex == 0) && (sc == NULL))
317 sc = rxnull_NewClientSecurityObject();
319 ViceLog(0, ("hpr_Initialize: Could not get afs tokens, running unauthenticated. [%d]", code));
321 memset(serverconns, 0, sizeof(serverconns)); /* terminate list!!! */
322 for (i = 0; i < info.numServers; i++) {
324 rx_NewConnection(info.hostAddr[i].sin_addr.s_addr,
325 info.hostAddr[i].sin_port, PRSRV,
329 code = ubik_ClientInit(serverconns, uclient);
331 ViceLog(0, ("hpr_Initialize: ubik client init failed. [%d]", code));
334 code = rxs_Release(sc);
339 hpr_End(struct ubik_client *uclient)
344 code = ubik_ClientDestroy(uclient);
350 hpr_GetHostCPS(afs_int32 host, prlist *CPS)
352 #ifdef AFS_PTHREAD_ENV
353 register afs_int32 code;
355 struct ubik_client *uclient =
356 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
359 code = hpr_Initialize(&uclient);
361 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
367 code = ubik_PR_GetHostCPS(uclient, 0, host, CPS, &over);
368 if (code != PRSUCCESS)
371 /* do something about this, probably make a new call */
372 /* don't forget there's a hard limit in the interface */
374 "membership list for host id %d exceeds display limit\n",
379 return pr_GetHostCPS(host, CPS);
384 hpr_NameToId(namelist *names, idlist *ids)
386 #ifdef AFS_PTHREAD_ENV
387 register afs_int32 code;
388 register afs_int32 i;
389 struct ubik_client *uclient =
390 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
393 code = hpr_Initialize(&uclient);
395 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
400 for (i = 0; i < names->namelist_len; i++)
401 stolower(names->namelist_val[i]);
402 code = ubik_PR_NameToID(uclient, 0, names, ids);
405 return pr_NameToId(names, ids);
410 hpr_IdToName(idlist *ids, namelist *names)
412 #ifdef AFS_PTHREAD_ENV
413 register afs_int32 code;
414 struct ubik_client *uclient =
415 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
418 code = hpr_Initialize(&uclient);
420 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
425 code = ubik_PR_IDToName(uclient, 0, ids, names);
428 return pr_IdToName(ids, names);
433 hpr_GetCPS(afs_int32 id, prlist *CPS)
435 #ifdef AFS_PTHREAD_ENV
436 register afs_int32 code;
438 struct ubik_client *uclient =
439 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
442 code = hpr_Initialize(&uclient);
444 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
450 code = ubik_PR_GetCPS(uclient, 0, id, CPS, &over);
451 if (code != PRSUCCESS)
454 /* do something about this, probably make a new call */
455 /* don't forget there's a hard limit in the interface */
456 fprintf(stderr, "membership list for id %d exceeds display limit\n",
461 return pr_GetCPS(id, CPS);
465 static short consolePort = 0;
468 h_Lock_r(register struct host *host)
478 * returns 1 if already locked
479 * else returns locks and returns 0
483 h_NBLock_r(register struct host *host)
485 struct Lock *hostLock = &host->lock;
490 if (!(hostLock->excl_locked) && !(hostLock->readers_reading))
491 hostLock->excl_locked = WRITE_LOCK;
495 LOCK_UNLOCK(hostLock);
504 #if FS_STATS_DETAILED
505 /*------------------------------------------------------------------------
506 * PRIVATE h_AddrInSameNetwork
509 * Given a target IP address and a candidate IP address (both
510 * in host byte order), return a non-zero value (1) if the
511 * candidate address is in a different network from the target
515 * a_targetAddr : Target address.
516 * a_candAddr : Candidate address.
519 * 1 if the candidate address is in the same net as the target,
523 * The target and candidate addresses are both in host byte
524 * order, NOT network byte order, when passed in. We return
525 * our value as a character, since that's the type of field in
526 * the host structure, where this info will be stored.
530 *------------------------------------------------------------------------*/
533 h_AddrInSameNetwork(afs_uint32 a_targetAddr, afs_uint32 a_candAddr)
534 { /*h_AddrInSameNetwork */
536 afs_uint32 targetNet;
540 * Pull out the network and subnetwork numbers from the target
541 * and candidate addresses. We can short-circuit this whole
542 * affair if the target and candidate addresses are not of the
545 if (IN_CLASSA(a_targetAddr)) {
546 if (!(IN_CLASSA(a_candAddr))) {
549 targetNet = a_targetAddr & IN_CLASSA_NET;
550 candNet = a_candAddr & IN_CLASSA_NET;
551 } else if (IN_CLASSB(a_targetAddr)) {
552 if (!(IN_CLASSB(a_candAddr))) {
555 targetNet = a_targetAddr & IN_CLASSB_NET;
556 candNet = a_candAddr & IN_CLASSB_NET;
557 } /*Class B target */
558 else if (IN_CLASSC(a_targetAddr)) {
559 if (!(IN_CLASSC(a_candAddr))) {
562 targetNet = a_targetAddr & IN_CLASSC_NET;
563 candNet = a_candAddr & IN_CLASSC_NET;
564 } /*Class C target */
566 targetNet = a_targetAddr;
567 candNet = a_candAddr;
568 } /*Class D address */
571 * Now, simply compare the extracted net values for the two addresses
572 * (which at this point are known to be of the same class)
574 if (targetNet == candNet)
579 } /*h_AddrInSameNetwork */
580 #endif /* FS_STATS_DETAILED */
583 /* Assumptions: called with held host */
585 h_gethostcps_r(register struct host *host, register afs_int32 now)
590 /* wait if somebody else is already doing the getCPS call */
591 while (host->hostFlags & HCPS_INPROGRESS) {
592 slept = 1; /* I did sleep */
593 host->hostFlags |= HCPS_WAITING; /* I am sleeping now */
594 #ifdef AFS_PTHREAD_ENV
595 pthread_cond_wait(&host->cond, &host_glock_mutex);
596 #else /* AFS_PTHREAD_ENV */
597 if ((code = LWP_WaitProcess(&(host->hostFlags))) != LWP_SUCCESS)
598 ViceLog(0, ("LWP_WaitProcess returned %d\n", code));
599 #endif /* AFS_PTHREAD_ENV */
603 host->hostFlags |= HCPS_INPROGRESS; /* mark as CPSCall in progress */
604 if (host->hcps.prlist_val)
605 free(host->hcps.prlist_val); /* this is for hostaclRefresh */
606 host->hcps.prlist_val = NULL;
607 host->hcps.prlist_len = 0;
608 host->cpsCall = slept ? (FT_ApproxTime()) : (now);
611 code = hpr_GetHostCPS(ntohl(host->host), &host->hcps);
616 * Although ubik_Call (called by pr_GetHostCPS) traverses thru all protection servers
617 * and reevaluates things if no sync server or quorum is found we could still end up
618 * with one of these errors. In such case we would like to reevaluate the rpc call to
619 * find if there's cps for this guy. We treat other errors (except network failures
620 * ones - i.e. code < 0) as an indication that there is no CPS for this host. Ideally
621 * we could like to deal this problem the other way around (i.e. if code == NOCPS
622 * ignore else retry next time) but the problem is that there're other errors (i.e.
623 * EPERM) for which we don't want to retry and we don't know the whole code list!
625 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC) {
627 * We would have preferred to use a while loop and try again since ops in protected
628 * acls for this host will fail now but they'll be reevaluated on any subsequent
629 * call. The attempt to wait for a quorum/sync site or network error won't work
630 * since this problems really should only occurs during a complete fileserver
631 * restart. Since the fileserver will start before the ptservers (and thus before
632 * quorums are complete) clients will be utilizing all the fileserver's lwps!!
634 host->hcpsfailed = 1;
636 ("Warning: GetHostCPS failed (%d) for %p (%s:%d); will retry\n",
637 code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
639 host->hcpsfailed = 0;
641 ("gethost: GetHostCPS failed (%d) for %p (%s:%d); ignored\n",
642 code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
644 if (host->hcps.prlist_val)
645 free(host->hcps.prlist_val);
646 host->hcps.prlist_val = NULL;
647 host->hcps.prlist_len = 0; /* Make sure it's zero */
649 host->hcpsfailed = 0;
651 host->hostFlags &= ~HCPS_INPROGRESS;
652 /* signal all who are waiting */
653 if (host->hostFlags & HCPS_WAITING) { /* somebody is waiting */
654 host->hostFlags &= ~HCPS_WAITING;
655 #ifdef AFS_PTHREAD_ENV
656 assert(pthread_cond_broadcast(&host->cond) == 0);
657 #else /* AFS_PTHREAD_ENV */
658 if ((code = LWP_NoYieldSignal(&(host->hostFlags))) != LWP_SUCCESS)
659 ViceLog(0, ("LWP_NoYieldSignal returns %d\n", code));
660 #endif /* AFS_PTHREAD_ENV */
664 /* args in net byte order */
666 h_flushhostcps(register afs_uint32 hostaddr, register afs_uint16 hport)
671 h_Lookup_r(hostaddr, hport, &host);
673 host->hcpsfailed = 1;
682 * Allocate a host. It will be identified by the peer (ip,port) info in the
683 * rx connection provided. The host is returned held and locked
685 #define DEF_ROPCONS 2115
688 h_Alloc_r(register struct rx_connection *r_con)
690 struct servent *serverentry;
693 #if FS_STATS_DETAILED
694 afs_uint32 newHostAddr_HBO; /*New host IP addr, in host byte order */
695 #endif /* FS_STATS_DETAILED */
699 host->host = rxr_HostOf(r_con);
700 host->port = rxr_PortOf(r_con);
702 h_AddHostToAddrHashTable_r(host->host, host->port, host);
704 if (consolePort == 0) { /* find the portal number for console */
705 #if defined(AFS_OSF_ENV)
706 serverentry = getservbyname("ropcons", "");
708 serverentry = getservbyname("ropcons", 0);
711 consolePort = serverentry->s_port;
713 consolePort = htons(DEF_ROPCONS); /* Use a default */
715 if (host->port == consolePort)
717 /* Make a callback channel even for the console, on the off chance that it
718 * makes a request that causes a break call back. It shouldn't. */
719 h_SetupCallbackConn_r(host);
720 now = host->LastCall = host->cpsCall = host->ActiveCall = FT_ApproxTime();
722 host->hcps.prlist_val = NULL;
723 host->hcps.prlist_len = 0;
724 host->interface = NULL;
726 host->hcpsfailed = 0; /* save cycles */
727 h_gethostcps(host); /* do this under host hold/lock */
729 host->FirstClient = NULL;
732 h_InsertList_r(host); /* update global host List */
733 #if FS_STATS_DETAILED
735 * Compare the new host's IP address (in host byte order) with ours
736 * (the File Server's), remembering if they are in the same network.
738 newHostAddr_HBO = (afs_uint32) ntohl(host->host);
739 host->InSameNetwork =
740 h_AddrInSameNetwork(FS_HostAddr_HBO, newHostAddr_HBO);
741 #endif /* FS_STATS_DETAILED */
748 /* Make a callback channel even for the console, on the off chance that it
749 * makes a request that causes a break call back. It shouldn't. */
751 h_SetupCallbackConn_r(struct host * host)
754 sc = rxnull_NewClientSecurityObject();
755 host->callback_rxcon =
756 rx_NewConnection(host->host, host->port, 1, sc, 0);
757 rx_SetConnDeadTime(host->callback_rxcon, 50);
758 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
762 * Lookup a host given an IP address and UDP port number.
763 * hostaddr and hport are in network order
764 * hostaddr and hport are in network order
765 * On return, refCount is incremented.
768 h_Lookup_r(afs_uint32 haddr, afs_uint16 hport, struct host **hostp)
771 struct host *host = NULL;
772 struct h_AddrHashChain *chain;
773 int index = h_HashIndex(haddr);
774 extern int hostaclRefresh;
777 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
778 host = chain->hostPtr;
780 if (!(host->hostFlags & HOSTDELETED) && chain->addr == haddr
781 && chain->port == hport) {
782 if ((host->hostFlags & HWHO_INPROGRESS) &&
783 h_threadquota(host->lock.num_waiting)) {
789 if (host->hostFlags & HOSTDELETED) {
796 now = FT_ApproxTime(); /* always evaluate "now" */
797 if (host->hcpsfailed || (host->cpsCall + hostaclRefresh < now)) {
799 * Every hostaclRefresh period (def 2 hrs) get the new
800 * membership list for the host. Note this could be the
801 * first time that the host is added to a group. Also
802 * here we also retry on previous legitimate hcps failures.
804 * If we get here refCount is elevated.
806 h_gethostcps_r(host, now);
816 /* Lookup a host given its UUID. */
818 h_LookupUuid_r(afsUUID * uuidp)
820 struct host *host = 0;
821 struct h_UuidHashChain *chain;
822 int index = h_UuidHashIndex(uuidp);
824 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
825 host = chain->hostPtr;
827 if (!(host->hostFlags & HOSTDELETED) && host->interface
828 && afs_uuid_equal(&host->interface->uuid, uuidp)) {
836 /* h_TossStuff_r: Toss anything in the host structure (the host or
837 * clients marked for deletion. Called from h_Release_r ONLY.
838 * To be called, there must be no holds, and either host->deleted
839 * or host->clientDeleted must be set.
842 h_TossStuff_r(register struct host *host)
844 register struct client **cp, *client;
846 /* if somebody still has this host held */
847 if (host->refCount > 0)
850 /* if somebody still has this host locked */
851 if (h_NBLock_r(host) != 0) {
854 ("Warning: h_TossStuff_r failed; Host %" AFS_PTR_FMT " (%s:%d) was locked.\n",
855 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
861 /* ASSUMPTION: rxi_FreeConnection() does not yield */
862 for (cp = &host->FirstClient; (client = *cp);) {
863 if ((host->hostFlags & HOSTDELETED) || client->deleted) {
865 ObtainWriteLockNoBlock(&client->lock, code);
869 ("Warning: h_TossStuff_r failed: Host %p (%s:%d) "
870 "client %p was locked.\n",
871 host, afs_inet_ntoa_r(host->host, hoststr),
872 ntohs(host->port), client));
876 if (client->refCount) {
879 ("Warning: h_TossStuff_r failed: Host %p (%s:%d) "
880 "client %p refcount %d.\n",
881 host, afs_inet_ntoa_r(host->host, hoststr),
882 ntohs(host->port), client, client->refCount));
883 /* This is the same thing we do if the host is locked */
884 ReleaseWriteLock(&client->lock);
887 client->CPS.prlist_len = 0;
888 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
889 free(client->CPS.prlist_val);
890 client->CPS.prlist_val = NULL;
891 CurrentConnections--;
893 ReleaseWriteLock(&client->lock);
899 /* We've just cleaned out all the deleted clients; clear the flag */
900 host->hostFlags &= ~CLIENTDELETED;
902 if (host->hostFlags & HOSTDELETED) {
903 register struct rx_connection *rxconn;
904 struct AddrPort hostAddrPort;
907 if (host->Console & 1)
909 if ((rxconn = host->callback_rxcon)) {
910 host->callback_rxcon = (struct rx_connection *)0;
911 rx_DestroyConnection(rxconn);
913 if (host->hcps.prlist_val)
914 free(host->hcps.prlist_val);
915 host->hcps.prlist_val = NULL;
916 host->hcps.prlist_len = 0;
917 DeleteAllCallBacks_r(host, 1);
918 host->hostFlags &= ~RESETDONE; /* just to be safe */
920 /* if alternate addresses do not exist */
921 if (!(host->interface)) {
922 h_DeleteHostFromAddrHashTable_r(host->host, host->port, host);
924 h_DeleteHostFromUuidHashTable_r(host);
925 h_DeleteHostFromAddrHashTable_r(host->host, host->port, host);
926 /* delete the hash entry for each valid alternate addresses */
927 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
928 hostAddrPort = host->interface->interface[i];
930 * if the interface addr/port is the primary, we already
931 * removed it. If the addr/port is not valid, its not
934 if (hostAddrPort.valid &&
935 (host->host != hostAddrPort.addr ||
936 host->port != hostAddrPort.port))
937 h_DeleteHostFromAddrHashTable_r(hostAddrPort.addr, hostAddrPort.port, host);
939 free(host->interface);
940 host->interface = NULL;
941 } /* if alternate address exists */
943 h_DeleteList_r(host); /* remove host from global host List */
950 /* h_Enumerate: Calls (*proc)(host, held, param) for at least each host in the
951 * system at the start of the enumeration (perhaps more). Hosts may be deleted
952 * (have delete flag set); ditto for clients. refCount is always incremented
953 * before (*proc) is called. The param flags is passed to (*proc) as the
954 * param flags, permitting (*proc) to stop the enumeration (BAIL).
956 * Needed? Why not always h_Hold_r and h_Release_r in (*proc), or even -never-
957 * h_Hold_r or h_Release_r in (*proc)?
959 * **The proc should return 0 if the host should be released, 1 if it should
960 * be held after enumeration.
963 h_Enumerate(int (*proc) (struct host*, int, void *), void *param)
965 register struct host *host, **list;
967 register int i, count;
970 if (hostCount == 0) {
974 list = (struct host **)malloc(hostCount * sizeof(struct host *));
976 ViceLog(0, ("Failed malloc in h_Enumerate (list)\n"));
979 flags = (int *)malloc(hostCount * sizeof(int));
981 ViceLog(0, ("Failed malloc in h_Enumerate (flags)\n"));
984 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
988 if (count != hostCount) {
989 ViceLog(0, ("h_Enumerate found %d of %d hosts\n", count, hostCount));
990 } else if (host != NULL) {
991 ViceLog(0, ("h_Enumerate found more than %d hosts\n", hostCount));
992 ShutDownAndCore(PANIC);
995 for (i = 0; i < count; i++) {
996 flags[i] = (*proc) (list[i], flags[i], param);
997 h_Release_r(list[i]);
998 /* bail out of the enumeration early */
999 if (H_ENUMERATE_ISSET_BAIL(flags[i]))
1003 free((void *)flags);
1007 /* h_Enumerate_r (revised):
1008 * Calls (*proc)(host, flags, param) for each host in hostList, starting
1009 * at enumstart. Called only under H_LOCK. Hosts may be deleted (have
1010 * delete flag set); ditto for clients. refCount is always incremented
1011 * before (*proc) is called. The param flags is passed to (*proc) as the
1012 * param flags, permitting (*proc) to stop the enumeration (BAIL).
1014 * Needed? Why not always h_Hold_r and h_Release_r in (*proc), or even -never-
1015 * h_Hold_r or h_Release_r in (*proc)?
1017 * **The proc should return 0 if the host should be released, 1 if it should
1018 * be held after enumeration.
1021 h_Enumerate_r(int (*proc) (struct host *, int, void *),
1022 struct host *enumstart, void *param)
1024 register struct host *host, *next;
1029 if (hostCount == 0) {
1032 h_Hold_r(enumstart);
1033 for (count = 0, host = enumstart; host && count < hostCount; host = next, flags = nflags, count++) {
1035 if (next && !H_ENUMERATE_ISSET_BAIL(flags))
1037 flags = (*proc) (host, flags, param);
1038 if (H_ENUMERATE_ISSET_BAIL(flags)) {
1039 h_Release_r(host); /* this might free up the host */
1042 h_Release_r(host); /* this might free up the host */
1045 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", hostCount));
1046 ShutDownAndCore(PANIC);
1048 } /*h_Enumerate_r */
1051 /* inserts a new HashChain structure corresponding to this UUID */
1053 h_AddHostToUuidHashTable_r(struct afsUUID *uuid, struct host *host)
1056 struct h_UuidHashChain *chain;
1057 char uuid1[128], uuid2[128];
1060 /* hash into proper bucket */
1061 index = h_UuidHashIndex(uuid);
1063 /* don't add the same entry multiple times */
1064 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
1065 if (!chain->hostPtr)
1068 if (chain->hostPtr->interface &&
1069 afs_uuid_equal(&chain->hostPtr->interface->uuid, uuid)) {
1070 if (LogLevel >= 125) {
1071 afsUUID_to_string(&chain->hostPtr->interface->uuid, uuid1,
1073 afsUUID_to_string(uuid, uuid2, 127);
1074 ViceLog(125, ("h_AddHostToUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s) exists as %s:%d (uuid %s)\n",
1076 afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1077 ntohs(chain->hostPtr->port), uuid2));
1083 /* insert into beginning of list for this bucket */
1084 chain = (struct h_UuidHashChain *)malloc(sizeof(struct h_UuidHashChain));
1086 ViceLog(0, ("Failed malloc in h_AddHostToUuidHashTable_r\n"));
1089 chain->hostPtr = host;
1090 chain->next = hostUuidHashTable[index];
1091 hostUuidHashTable[index] = chain;
1094 afsUUID_to_string(uuid, uuid2, 127);
1096 ("h_AddHostToUuidHashTable_r: host %p (%s:%d) added as uuid %s\n",
1097 host, afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1098 ntohs(chain->hostPtr->port), uuid2));
1101 /* deletes a HashChain structure corresponding to this host */
1103 h_DeleteHostFromUuidHashTable_r(struct host *host)
1106 register struct h_UuidHashChain **uhp, *uth;
1110 if (!host->interface)
1113 /* hash into proper bucket */
1114 index = h_UuidHashIndex(&host->interface->uuid);
1116 if (LogLevel >= 125)
1117 afsUUID_to_string(&host->interface->uuid, uuid1, 127);
1118 for (uhp = &hostUuidHashTable[index]; (uth = *uhp); uhp = &uth->next) {
1119 assert(uth->hostPtr);
1120 if (uth->hostPtr == host) {
1122 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d)\n",
1123 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1124 ntohs(host->port)));
1131 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d) not found\n",
1132 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1133 ntohs(host->port)));
1137 /* inserts a new HashChain structure corresponding to this address */
1139 h_AddHostToAddrHashTable_r(afs_uint32 addr, afs_uint16 port, struct host *host)
1142 struct h_AddrHashChain *chain;
1145 /* hash into proper bucket */
1146 index = h_HashIndex(addr);
1148 /* don't add the same address:port pair entry multiple times */
1149 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1150 if (chain->addr == addr && chain->port == port) {
1151 if (chain->hostPtr == host) {
1153 ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) already hashed\n",
1154 host, afs_inet_ntoa_r(chain->addr, hoststr),
1155 ntohs(chain->port)));
1158 if (!(chain->hostPtr->hostFlags & HOSTDELETED)) {
1160 ("h_AddHostToAddrHashTable_r: refusing to hash host %" AFS_PTR_FMT ", %"
1161 AFS_PTR_FMT " (%s:%d) already hashed\n",
1162 host, chain->hostPtr, afs_inet_ntoa_r(chain->addr, hoststr),
1163 ntohs(chain->port)));
1169 /* insert into beginning of list for this bucket */
1170 chain = (struct h_AddrHashChain *)malloc(sizeof(struct h_AddrHashChain));
1172 ViceLog(0, ("Failed malloc in h_AddHostToAddrHashTable_r\n"));
1175 chain->hostPtr = host;
1176 chain->next = hostAddrHashTable[index];
1179 hostAddrHashTable[index] = chain;
1180 ViceLog(125, ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " added as %s:%d\n",
1181 host, afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1185 * This is called with host locked and held.
1186 * It is called to either validate or add an additional interface
1187 * address/port on the specified host.
1189 * All addresses are in network byte order.
1192 addInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1196 struct Interface *interface;
1197 char hoststr[16], hoststr2[16];
1200 assert(host->interface);
1203 * Make sure this address is on the list of known addresses
1206 number = host->interface->numberOfInterfaces;
1207 for (i = 0; i < number; i++) {
1208 if (host->interface->interface[i].addr == addr &&
1209 host->interface->interface[i].port == port) {
1211 ("addInterfaceAddr : found host %" AFS_PTR_FMT " (%s:%d) adding %s:%d%s\n",
1212 host, afs_inet_ntoa_r(host->host, hoststr),
1213 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1214 ntohs(port), host->interface->interface[i].valid ? "" :
1217 if (host->interface->interface[i].valid == 0) {
1218 host->interface->interface[i].valid = 1;
1219 h_AddHostToAddrHashTable_r(addr, port, host);
1225 ViceLog(125, ("addInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) adding %s:%d\n",
1226 host, afs_inet_ntoa_r(host->host, hoststr),
1227 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1230 interface = (struct Interface *)
1231 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * number));
1233 ViceLog(0, ("Failed malloc in addInterfaceAddr_r\n"));
1236 interface->numberOfInterfaces = number + 1;
1237 interface->uuid = host->interface->uuid;
1238 for (i = 0; i < number; i++)
1239 interface->interface[i] = host->interface->interface[i];
1241 /* Add the new valid interface */
1242 interface->interface[number].addr = addr;
1243 interface->interface[number].port = port;
1244 interface->interface[number].valid = 1;
1245 h_AddHostToAddrHashTable_r(addr, port, host);
1246 free(host->interface);
1247 host->interface = interface;
1254 * This is called with host locked and held.
1256 * All addresses are in network byte order.
1259 removeInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1263 struct Interface *interface;
1264 char hoststr[16], hoststr2[16];
1267 assert(host->interface);
1269 ViceLog(125, ("removeInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1270 host, afs_inet_ntoa_r(host->host, hoststr),
1271 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1275 * Make sure this address is on the list of known addresses
1278 interface = host->interface;
1279 number = host->interface->numberOfInterfaces;
1280 for (i = 0; i < number; i++) {
1281 if (interface->interface[i].addr == addr &&
1282 interface->interface[i].port == port) {
1283 if (interface->interface[i].valid)
1284 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1286 for (; i < number; i++) {
1287 interface->interface[i] = interface->interface[i+1];
1289 interface->numberOfInterfaces = number;
1298 * This is called with host locked and held.
1300 * All addresses are in network byte order.
1303 invalidateInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1307 struct Interface *interface;
1308 char hoststr[16], hoststr2[16];
1311 assert(host->interface);
1313 ViceLog(125, ("invalidateInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1314 host, afs_inet_ntoa_r(host->host, hoststr),
1315 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1319 * Make sure this address is on the list of known addresses
1322 interface = host->interface;
1323 number = host->interface->numberOfInterfaces;
1324 for (i = 0; i < number; i++) {
1325 if (interface->interface[i].addr == addr &&
1326 interface->interface[i].port == port) {
1327 if (interface->interface[i].valid) {
1328 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1329 interface->interface[i].valid = 0;
1340 * This is called with host locked and held. This function differs
1341 * from removeInterfaceAddr_r in that it is called when the address
1342 * is being removed from the host regardless of whether or not there
1343 * is an interface list for the host. This function will delete the
1344 * host if there are no addresses left on it.
1346 * All addresses are in network byte order.
1349 removeAddress_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1352 char hoststr[16], hoststr2[16];
1353 struct rx_connection *rxconn;
1355 if (!host->interface || host->interface->numberOfInterfaces == 1) {
1356 if (host->host == addr && host->port == port) {
1358 ("Removing only address for host %" AFS_PTR_FMT " (%s:%d), deleting host.\n",
1359 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1360 host->hostFlags |= HOSTDELETED;
1362 * Do not remove the primary addr/port from the hash table.
1363 * It will be ignored due to the HOSTDELETED flag and will
1364 * be removed when h_TossStuff_r() cleans up the HOSTDELETED
1365 * host. Removing it here will only result in a search for
1366 * the host/addr/port in the hash chain which will fail.
1370 ("Removing address that does not belong to host %" AFS_PTR_FMT " (%s:%d).\n",
1371 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1374 if (host->host == addr && host->port == port) {
1375 removeInterfaceAddr_r(host, addr, port);
1377 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1378 if (host->interface->interface[i].valid) {
1380 ("Removed address for host %" AFS_PTR_FMT " (%s:%d), new primary interface %s:%d.\n",
1381 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1382 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr2),
1383 ntohs(host->interface->interface[i].port)));
1384 host->host = host->interface->interface[i].addr;
1385 host->port = host->interface->interface[i].port;
1386 h_AddHostToAddrHashTable_r(host->host, host->port, host);
1391 if (i == host->interface->numberOfInterfaces) {
1393 ("Removed only address for host %" AFS_PTR_FMT " (%s:%d), no valid alternate interfaces, deleting host.\n",
1394 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1395 host->hostFlags |= HOSTDELETED;
1396 /* addr/port was removed from the hash table */
1400 rxconn = host->callback_rxcon;
1401 host->callback_rxcon = NULL;
1404 rx_DestroyConnection(rxconn);
1409 sc = rxnull_NewClientSecurityObject();
1410 host->callback_rxcon =
1411 rx_NewConnection(host->host, host->port, 1, sc, 0);
1412 rx_SetConnDeadTime(host->callback_rxcon, 50);
1413 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
1416 /* not the primary addr/port, just invalidate it */
1417 invalidateInterfaceAddr_r(host, addr, port);
1424 h_threadquota(int waiting)
1429 } else if (lwps > 32) {
1432 } else if (lwps > 16) {
1442 /* If found, host is returned with refCount incremented */
1444 h_GetHost_r(struct rx_connection *tcon)
1447 struct host *oldHost;
1449 struct interfaceAddr interf;
1450 int interfValid = 0;
1451 struct Identity *identP = NULL;
1454 char hoststr[16], hoststr2[16];
1456 struct rx_connection *cb_conn = NULL;
1457 struct rx_connection *cb_in = NULL;
1459 caps.Capabilities_val = NULL;
1461 haddr = rxr_HostOf(tcon);
1462 hport = rxr_PortOf(tcon);
1465 rx_DestroyConnection(cb_in);
1468 if (caps.Capabilities_val)
1469 free(caps.Capabilities_val);
1470 caps.Capabilities_val = NULL;
1471 caps.Capabilities_len = 0;
1474 if (h_Lookup_r(haddr, hport, &host))
1476 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
1477 if (host && !identP && !(host->Console & 1)) {
1478 /* This is a new connection, and we already have a host
1479 * structure for this address. Verify that the identity
1480 * of the caller matches the identity in the host structure.
1482 if ((host->hostFlags & HWHO_INPROGRESS) &&
1483 h_threadquota(host->lock.num_waiting)) {
1489 if (!(host->hostFlags & ALTADDR) ||
1490 (host->hostFlags & HOSTDELETED)) {
1491 /* Another thread is doing initialization
1492 * or this host was deleted while we
1493 * waited for the lock. */
1496 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1497 host, afs_inet_ntoa_r(host->host, hoststr),
1498 ntohs(host->port)));
1502 host->hostFlags |= HWHO_INPROGRESS;
1503 host->hostFlags &= ~ALTADDR;
1505 /* We received a new connection from an IP address/port
1506 * that is associated with 'host' but the address/port of
1507 * the callback connection does not have to match it.
1508 * If there is a match, we can use the existing callback
1509 * connection to verify the UUID. If they do not match
1510 * we need to use a new callback connection to verify the
1511 * UUID of the incoming caller and perhaps use the old
1512 * callback connection to verify that the old address/port
1516 cb_conn = host->callback_rxcon;
1517 rx_GetConnection(cb_conn);
1519 if (haddr == host->host && hport == host->port) {
1520 /* The existing callback connection matches the
1521 * incoming connection so just use it.
1524 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1525 if (code == RXGEN_OPCODE)
1526 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1528 /* We do not have a match. Create a new connection
1529 * for the new addr/port and use multi_Rx to probe
1530 * both of them simultaneously.
1533 sc = rxnull_NewClientSecurityObject();
1534 cb_in = rx_NewConnection(haddr, hport, 1, sc, 0);
1535 rx_SetConnDeadTime(cb_in, 50);
1536 rx_SetConnHardDeadTime(cb_in, AFS_HARDDEADTIME);
1539 RXAFSCB_TellMeAboutYourself(cb_in, &interf, &caps);
1540 if (code == RXGEN_OPCODE)
1541 code = RXAFSCB_WhoAreYou(cb_in, &interf);
1543 rx_PutConnection(cb_conn);
1546 if ((code == RXGEN_OPCODE) ||
1547 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1548 identP = (struct Identity *)malloc(sizeof(struct Identity));
1550 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1554 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1555 if (cb_in == NULL) {
1556 /* The host on this connection was unable to respond to
1557 * the WhoAreYou. We will treat this as a new connection
1558 * from the existing host. The worst that can happen is
1559 * that we maintain some extra callback state information */
1560 if (host->interface) {
1562 ("Host %" AFS_PTR_FMT " (%s:%d) used to support WhoAreYou, deleting.\n",
1564 afs_inet_ntoa_r(host->host, hoststr),
1565 ntohs(host->port)));
1566 host->hostFlags |= HOSTDELETED;
1567 host->hostFlags &= ~HWHO_INPROGRESS;
1574 /* The incoming connection does not support WhoAreYou but
1575 * the original one might have. Use removeAddress_r() to
1576 * remove this addr/port from the host that was found.
1577 * If there are no more addresses left for the host it
1578 * will be deleted. Then we retry.
1580 removeAddress_r(host, haddr, hport);
1581 host->hostFlags &= ~HWHO_INPROGRESS;
1582 host->hostFlags |= ALTADDR;
1588 } else if (code == 0) {
1590 identP = (struct Identity *)malloc(sizeof(struct Identity));
1592 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1596 identP->uuid = interf.uuid;
1597 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1598 /* Check whether the UUID on this connection matches
1599 * the UUID in the host structure. If they don't match
1600 * then this is not the same host as before. */
1601 if (!host->interface
1602 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid)) {
1605 ("Uuid doesn't match connection (%s:%d).\n",
1606 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport)));
1607 removeAddress_r(host, haddr, hport);
1610 ("Uuid doesn't match host %" AFS_PTR_FMT " (%s:%d).\n",
1611 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1613 removeAddress_r(host, host->host, host->port);
1615 host->hostFlags &= ~HWHO_INPROGRESS;
1616 host->hostFlags |= ALTADDR;
1622 /* the UUID matched the client at the incoming addr/port
1623 * but this is not the address of the active callback
1624 * connection. Try that connection and see if the client
1625 * is still there and if the reported UUID is the same.
1628 afsUUID uuid = host->interface->uuid;
1629 cb_conn = host->callback_rxcon;
1630 rx_GetConnection(cb_conn);
1631 rx_SetConnDeadTime(cb_conn, 2);
1632 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1634 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1636 rx_SetConnDeadTime(cb_conn, 50);
1637 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1638 rx_PutConnection(cb_conn);
1641 /* The primary address is either not responding or
1642 * is not the client we are looking for. Need to
1643 * remove the primary address and add swap in the new
1644 * callback connection, and destroy the old one.
1646 struct rx_connection *rxconn;
1647 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
1649 afs_inet_ntoa_r(host->host, hoststr),
1650 ntohs(host->port),code2));
1653 * make sure we add and then remove. otherwise, we
1654 * might end up with no valid interfaces after the
1655 * remove and the host will have been marked deleted.
1657 addInterfaceAddr_r(host, haddr, hport);
1658 removeInterfaceAddr_r(host, host->host, host->port);
1661 rxconn = host->callback_rxcon;
1662 host->callback_rxcon = cb_in;
1667 * If rx_DestroyConnection calls h_FreeConnection we
1668 * will deadlock on the host_glock_mutex. Work around
1669 * the problem by unhooking the client from the
1670 * connection before destroying the connection.
1672 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
1673 rx_DestroyConnection(rxconn);
1679 /* A callback to the incoming connection address is failing.
1680 * Assume that the addr/port is no longer associated with the host
1681 * returned by h_Lookup_r.
1684 ("CB: WhoAreYou failed for connection (%s:%d) , error %d\n",
1685 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport), code));
1686 removeAddress_r(host, haddr, hport);
1687 host->hostFlags &= ~HWHO_INPROGRESS;
1688 host->hostFlags |= ALTADDR;
1692 rx_DestroyConnection(cb_in);
1697 ("CB: WhoAreYou failed for host %" AFS_PTR_FMT " (%s:%d), error %d\n",
1698 host, afs_inet_ntoa_r(host->host, hoststr),
1699 ntohs(host->port), code));
1700 host->hostFlags |= VENUSDOWN;
1703 if (caps.Capabilities_val
1704 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1705 host->hostFlags |= HERRORTRANS;
1707 host->hostFlags &= ~(HERRORTRANS);
1708 host->hostFlags |= ALTADDR;
1709 host->hostFlags &= ~HWHO_INPROGRESS;
1712 if (!(host->hostFlags & ALTADDR)) {
1713 /* another thread is doing the initialisation */
1715 ("Host %" AFS_PTR_FMT " (%s:%d) waiting for host-init to complete\n",
1716 host, afs_inet_ntoa_r(host->host, hoststr),
1717 ntohs(host->port)));
1721 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1722 host, afs_inet_ntoa_r(host->host, hoststr),
1723 ntohs(host->port)));
1727 /* We need to check whether the identity in the host structure
1728 * matches the identity on the connection. If they don't match
1729 * then treat this a new host. */
1730 if (!(host->Console & 1)
1731 && ((!identP->valid && host->interface)
1732 || (identP->valid && !host->interface)
1734 && !afs_uuid_equal(&identP->uuid,
1735 &host->interface->uuid)))) {
1736 char uuid1[128], uuid2[128];
1738 afsUUID_to_string(&identP->uuid, uuid1, 127);
1739 if (host->interface)
1740 afsUUID_to_string(&host->interface->uuid, uuid2, 127);
1742 ("CB: new identity for host %p (%s:%d), "
1743 "deleting(%x %p %s %s)\n",
1744 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1745 identP->valid, host->interface,
1746 identP->valid ? uuid1 : "no_uuid",
1747 host->interface ? uuid2 : "no_uuid"));
1749 /* The host in the cache is not the host for this connection */
1751 host->hostFlags |= HOSTDELETED;
1757 host = h_Alloc_r(tcon); /* returned held and locked */
1758 h_gethostcps_r(host, FT_ApproxTime());
1759 if (!(host->Console & 1)) {
1761 cb_conn = host->callback_rxcon;
1762 rx_GetConnection(cb_conn);
1763 host->hostFlags |= HWHO_INPROGRESS;
1766 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1767 if (code == RXGEN_OPCODE)
1768 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1769 rx_PutConnection(cb_conn);
1772 if ((code == RXGEN_OPCODE) ||
1773 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1776 (struct Identity *)malloc(sizeof(struct Identity));
1781 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1786 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1788 ("Host %" AFS_PTR_FMT " (%s:%d) does not support WhoAreYou.\n",
1789 host, afs_inet_ntoa_r(host->host, hoststr),
1790 ntohs(host->port)));
1792 } else if (code == 0) {
1795 (struct Identity *)malloc(sizeof(struct Identity));
1800 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1805 identP->uuid = interf.uuid;
1807 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1809 ("WhoAreYou success on host %" AFS_PTR_FMT " (%s:%d)\n",
1810 host, afs_inet_ntoa_r(host->host, hoststr),
1811 ntohs(host->port)));
1813 if (code == 0 && !identP->valid) {
1814 cb_conn = host->callback_rxcon;
1815 rx_GetConnection(cb_conn);
1817 code = RXAFSCB_InitCallBackState(cb_conn);
1818 rx_PutConnection(cb_conn);
1821 } else if (code == 0) {
1822 oldHost = h_LookupUuid_r(&identP->uuid);
1827 if (oldHost->hostFlags & HOSTDELETED) {
1828 h_Unlock_r(oldHost);
1829 h_Release_r(oldHost);
1837 oldHost->hostFlags |= HWHO_INPROGRESS;
1839 if (oldHost->interface) {
1841 afsUUID uuid = oldHost->interface->uuid;
1842 cb_conn = oldHost->callback_rxcon;
1843 rx_GetConnection(cb_conn);
1844 rx_SetConnDeadTime(cb_conn, 2);
1845 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1847 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1849 rx_SetConnDeadTime(cb_conn, 50);
1850 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1851 rx_PutConnection(cb_conn);
1854 /* The primary address is either not responding or
1855 * is not the client we are looking for.
1856 * MultiProbeAlternateAddress_r() will remove the
1857 * alternate interfaces that do not have the same
1859 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
1861 afs_inet_ntoa_r(oldHost->host, hoststr),
1862 ntohs(oldHost->port),code2));
1863 MultiProbeAlternateAddress_r(oldHost);
1870 /* This is a new address for an existing host. Update
1871 * the list of interfaces for the existing host and
1872 * delete the host structure we just allocated. */
1874 /* prevent warnings while manipulating interface lists */
1875 host->hostFlags |= HOSTDELETED;
1877 if (oldHost->host != haddr || oldHost->port != hport) {
1878 struct rx_connection *rxconn;
1881 ("CB: Host %" AFS_PTR_FMT " (%s:%d) has new addr %s:%d\n",
1883 afs_inet_ntoa_r(oldHost->host, hoststr2),
1884 ntohs(oldHost->port),
1885 afs_inet_ntoa_r(haddr, hoststr),
1888 * add then remove. otherwise the host may get marked
1889 * deleted if we removed the only valid address.
1891 addInterfaceAddr_r(oldHost, haddr, hport);
1892 if (probefail || oldHost->host == haddr) {
1894 * The probe failed which means that the old
1895 * address is either unreachable or is not the
1896 * same host we were just contacted by. We will
1897 * also remove addresses if only the port has
1898 * changed because that indicates the client
1901 removeInterfaceAddr_r(oldHost, oldHost->host, oldHost->port);
1904 struct Interface *interface = oldHost->interface;
1905 int number = oldHost->interface->numberOfInterfaces;
1906 for (i = 0; i < number; i++) {
1907 if (interface->interface[i].addr == haddr &&
1908 interface->interface[i].port != hport) {
1910 * We have just been contacted by a client
1911 * that has been seen from behind a NAT
1912 * and at least one other address.
1914 removeInterfaceAddr_r(oldHost, haddr,
1915 interface->interface[i].port);
1920 h_AddHostToAddrHashTable_r(haddr, hport, oldHost);
1921 oldHost->host = haddr;
1922 oldHost->port = hport;
1923 rxconn = oldHost->callback_rxcon;
1924 oldHost->callback_rxcon = host->callback_rxcon;
1925 host->callback_rxcon = rxconn;
1927 /* don't destroy rxconn here; let h_TossStuff_r
1928 * take care of that via h_Release_r below */
1930 host->hostFlags &= ~HWHO_INPROGRESS;
1932 /* release host because it was allocated by h_Alloc_r */
1935 /* the new host is held and locked */
1937 /* This really is a new host */
1938 h_AddHostToUuidHashTable_r(&identP->uuid, host);
1939 cb_conn = host->callback_rxcon;
1940 rx_GetConnection(cb_conn);
1943 RXAFSCB_InitCallBackState3(cb_conn,
1945 rx_PutConnection(cb_conn);
1950 ("InitCallBackState3 success on host %" AFS_PTR_FMT " (%s:%d)\n",
1951 host, afs_inet_ntoa_r(host->host, hoststr),
1952 ntohs(host->port)));
1953 assert(interfValid == 1);
1954 initInterfaceAddr_r(host, &interf);
1960 ("CB: RCallBackConnectBack failed for %" AFS_PTR_FMT " (%s:%d)\n",
1961 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1962 host->hostFlags |= VENUSDOWN;
1965 ("CB: RCallBackConnectBack succeeded for %" AFS_PTR_FMT " (%s:%d)\n",
1966 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1967 host->hostFlags |= RESETDONE;
1970 if (caps.Capabilities_val
1971 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1972 host->hostFlags |= HERRORTRANS;
1974 host->hostFlags &= ~(HERRORTRANS);
1975 host->hostFlags |= ALTADDR; /* host structure initialization complete */
1976 host->hostFlags &= ~HWHO_INPROGRESS;
1981 if (caps.Capabilities_val)
1982 free(caps.Capabilities_val);
1983 caps.Capabilities_val = NULL;
1984 caps.Capabilities_len = 0;
1986 rx_DestroyConnection(cb_in);
1994 static char localcellname[PR_MAXNAMELEN + 1];
1995 char local_realms[AFS_NUM_LREALMS][AFS_REALM_SZ];
1996 int num_lrealms = -1;
2000 h_InitHostPackage(void)
2002 memset(&nulluuid, 0, sizeof(afsUUID));
2003 afsconf_GetLocalCell(confDir, localcellname, PR_MAXNAMELEN);
2004 if (num_lrealms == -1) {
2006 for (i=0; i<AFS_NUM_LREALMS; i++) {
2007 if (afs_krb_get_lrealm(local_realms[i], i) != 0 /*KSUCCESS*/)
2013 ("afs_krb_get_lrealm failed, using %s.\n",
2015 strncpy(local_realms[0], localcellname, AFS_REALM_SZ);
2021 /* initialize the rest of the local realms to nullstring for debugging */
2022 for (; i<AFS_NUM_LREALMS; i++)
2023 local_realms[i][0] = '\0';
2025 rxcon_ident_key = rx_KeyCreate((rx_destructor_t) free);
2026 rxcon_client_key = rx_KeyCreate((rx_destructor_t) 0);
2027 #ifdef AFS_PTHREAD_ENV
2028 assert(pthread_mutex_init(&host_glock_mutex, NULL) == 0);
2029 #endif /* AFS_PTHREAD_ENV */
2033 MapName_r(char *aname, char *acell, afs_int32 * aval)
2038 afs_int32 anamelen, cnamelen;
2042 anamelen = strlen(aname);
2043 if (anamelen >= PR_MAXNAMELEN)
2044 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
2046 lnames.namelist_len = 1;
2047 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
2048 lids.idlist_len = 0;
2049 lids.idlist_val = NULL;
2051 cnamelen = strlen(acell);
2053 if (afs_is_foreign_ticket_name(aname, NULL, acell, localcellname)) {
2055 ("MapName: cell is foreign. cell=%s, localcell=%s, localrealms={%s,%s,%s,%s}\n",
2056 acell, localcellname, local_realms[0],local_realms[1],local_realms[2],local_realms[3]));
2057 if ((anamelen + cnamelen + 1) >= PR_MAXNAMELEN) {
2059 ("MapName: Name too long, using AnonymousID for %s@%s\n",
2061 *aval = AnonymousID;
2064 foreign = 1; /* attempt cross-cell authentication */
2065 tname = (char *)malloc(PR_MAXNAMELEN);
2067 ViceLog(0, ("Failed malloc in MapName_r\n"));
2070 strcpy(tname, aname);
2071 tname[anamelen] = '@';
2072 strcpy(tname + anamelen + 1, acell);
2073 lnames.namelist_val = (prname *) tname;
2078 code = hpr_NameToId(&lnames, &lids);
2081 if (lids.idlist_val) {
2082 *aval = lids.idlist_val[0];
2083 if (*aval == AnonymousID) {
2085 ("MapName: NameToId on %s returns anonymousID\n",
2086 lnames.namelist_val[0]));
2088 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
2091 ("MapName: NameToId on '%s' is unknown\n",
2092 lnames.namelist_val[0]));
2098 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
2106 /* NOTE: this returns the client with a Write lock and a refCount */
2108 h_ID2Client(afs_int32 vid)
2110 register struct client *client;
2111 register struct host *host;
2115 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
2116 if (host->hostFlags & HOSTDELETED)
2118 for (client = host->FirstClient; client; client = client->next) {
2119 if (!client->deleted && client->ViceId == vid) {
2122 ObtainWriteLock(&client->lock);
2127 if (count != hostCount) {
2128 ViceLog(0, ("h_ID2Client found %d of %d hosts\n", count, hostCount));
2129 } else if (host != NULL) {
2130 ViceLog(0, ("h_ID2Client found more than %d hosts\n", hostCount));
2131 ShutDownAndCore(PANIC);
2139 * Called by the server main loop. Returns a h_Held client, which must be
2140 * released later the main loop. Allocates a client if the matching one
2141 * isn't around. The client is returned with its reference count incremented
2142 * by one. The caller must call h_ReleaseClient_r when finished with
2145 * The refCount on client->host is returned incremented. h_ReleaseClient_r
2146 * does not decrement the refCount on client->host.
2149 h_FindClient_r(struct rx_connection *tcon)
2151 register struct client *client;
2152 struct host *host = NULL;
2153 struct client *oldClient;
2154 afs_int32 viceid = 0;
2158 #if (64-MAXKTCNAMELEN)
2159 ticket name length != 64
2163 char uname[PR_MAXNAMELEN];
2164 char tcell[MAXKTCREALMLEN];
2168 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2169 if (client && client->sid == rxr_CidOf(tcon)
2170 && client->VenusEpoch == rxr_GetEpoch(tcon)) {
2172 h_Hold_r(client->host);
2173 if (!client->deleted && client->prfail != 2) {
2174 /* Could add shared lock on client here */
2175 /* note that we don't have to lock entry in this path to
2176 * ensure CPS is initialized, since we don't call rx_SetSpecific
2177 * until initialization is done, and we only get here if
2178 * rx_GetSpecific located the client structure.
2183 ObtainWriteLock(&client->lock); /* released at end */
2189 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
2191 ("FindClient: authenticating connection: authClass=%d\n",
2193 if (authClass == 1) {
2194 /* A bcrypt tickets, no longer supported */
2195 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
2196 viceid = AnonymousID;
2197 expTime = 0x7fffffff;
2198 } else if (authClass == 2) {
2201 /* kerberos ticket */
2202 code = rxkad_GetServerInfo(tcon, /*level */ 0, (afs_uint32 *)&expTime,
2203 tname, tinst, tcell, &kvno);
2205 ViceLog(1, ("Failed to get rxkad ticket info\n"));
2206 viceid = AnonymousID;
2207 expTime = 0x7fffffff;
2209 int ilen = strlen(tinst);
2211 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
2212 tname, tinst, tcell, expTime, kvno));
2213 strncpy(uname, tname, sizeof(uname));
2215 if (strlen(uname) + 1 + ilen >= sizeof(uname))
2218 strcat(uname, tinst);
2220 /* translate the name to a vice id */
2221 code = MapName_r(uname, tcell, &viceid);
2225 ("failed to map name=%s, cell=%s -> code=%d\n", uname,
2228 viceid = AnonymousID;
2229 expTime = 0x7fffffff;
2233 viceid = AnonymousID; /* unknown security class */
2234 expTime = 0x7fffffff;
2237 if (!client) { /* loop */
2238 host = h_GetHost_r(tcon); /* Returns with incremented refCount */
2244 /* First try to find the client structure */
2245 for (client = host->FirstClient; client; client = client->next) {
2246 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2247 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2250 ObtainWriteLock(&client->lock);
2256 /* Still no client structure - get one */
2259 if (host->hostFlags & HOSTDELETED) {
2264 /* Retry to find the client structure */
2265 for (client = host->FirstClient; client; client = client->next) {
2266 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2267 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2269 goto retryfirstclient;
2274 ObtainWriteLock(&client->lock);
2275 client->refCount = 1;
2276 client->host = host;
2277 #if FS_STATS_DETAILED
2278 client->InSameNetwork = host->InSameNetwork;
2279 #endif /* FS_STATS_DETAILED */
2280 client->ViceId = viceid;
2281 client->expTime = expTime; /* rx only */
2282 client->authClass = authClass; /* rx only */
2283 client->sid = rxr_CidOf(tcon);
2284 client->VenusEpoch = rxr_GetEpoch(tcon);
2285 client->CPS.prlist_val = NULL;
2286 client->CPS.prlist_len = 0;
2290 client->prfail = fail;
2292 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
2293 client->CPS.prlist_len = 0;
2294 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID))
2295 free(client->CPS.prlist_val);
2296 client->CPS.prlist_val = NULL;
2297 client->ViceId = viceid;
2298 client->expTime = expTime;
2300 if (viceid == ANONYMOUSID) {
2301 client->CPS.prlist_len = AnonCPS.prlist_len;
2302 client->CPS.prlist_val = AnonCPS.prlist_val;
2305 code = hpr_GetCPS(viceid, &client->CPS);
2310 ("pr_GetCPS failed(%d) for user %d, host %" AFS_PTR_FMT " (%s:%d)\n",
2311 code, viceid, client->host,
2312 afs_inet_ntoa_r(client->host->host,hoststr),
2313 ntohs(client->host->port)));
2315 /* Although ubik_Call (called by pr_GetCPS) traverses thru
2316 * all protection servers and reevaluates things if no
2317 * sync server or quorum is found we could still end up
2318 * with one of these errors. In such case we would like to
2319 * reevaluate the rpc call to find if there's cps for this
2320 * guy. We treat other errors (except network failures
2321 * ones - i.e. code < 0) as an indication that there is no
2322 * CPS for this host. Ideally we could like to deal this
2323 * problem the other way around (i.e. if code == NOCPS
2324 * ignore else retry next time) but the problem is that
2325 * there're other errors (i.e. EPERM) for which we don't
2326 * want to retry and we don't know the whole code list!
2328 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
2332 /* the disabling of system:administrators is so iffy and has so many
2333 * possible failure modes that we will disable it again */
2334 /* Turn off System:Administrator for safety
2335 * if (AL_IsAMember(SystemId, client->CPS) == 0)
2336 * assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
2339 /* Now, tcon may already be set to a rock, since we blocked with no host
2340 * or client locks set above in pr_GetCPS (XXXX some locking is probably
2341 * required). So, before setting the RPC's rock, we should disconnect
2342 * the RPC from the other client structure's rock.
2344 oldClient = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2345 if (oldClient && oldClient != client && oldClient->sid == rxr_CidOf(tcon)
2346 && oldClient->VenusEpoch == rxr_GetEpoch(tcon)) {
2348 if (!oldClient->deleted) {
2349 /* if we didn't create it, it's not ours to put back */
2351 ViceLog(0, ("FindClient: stillborn client %p(%x); "
2352 "conn %p (host %s:%d) had client %p(%x)\n",
2353 client, client->sid, tcon,
2354 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2355 ntohs(rxr_PortOf(tcon)),
2356 oldClient, oldClient->sid));
2357 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2358 free(client->CPS.prlist_val);
2359 client->CPS.prlist_val = NULL;
2360 client->CPS.prlist_len = 0;
2362 /* We should perhaps check for 0 here */
2364 ReleaseWriteLock(&client->lock);
2369 oldClient->refCount++;
2371 ObtainWriteLock(&oldClient->lock);
2375 ViceLog(0, ("FindClient: deleted client %p(%x) already had "
2376 "conn %p (host %s:%d), stolen by client %p(%x)\n",
2377 oldClient, oldClient->sid, tcon,
2378 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2379 ntohs(rxr_PortOf(tcon)),
2380 client, client->sid));
2381 /* rx_SetSpecific will be done immediately below */
2384 /* Avoid chaining in more than once. */
2388 if (host->hostFlags & HOSTDELETED) {
2393 client->host = NULL;
2395 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2396 free(client->CPS.prlist_val);
2397 client->CPS.prlist_val = NULL;
2398 client->CPS.prlist_len = 0;
2401 ReleaseWriteLock(&client->lock);
2406 client->next = host->FirstClient;
2407 host->FirstClient = client;
2409 CurrentConnections++; /* increment number of connections */
2411 rx_SetSpecific(tcon, rxcon_client_key, client);
2412 ReleaseWriteLock(&client->lock);
2416 } /*h_FindClient_r */
2419 h_ReleaseClient_r(struct client *client)
2421 assert(client->refCount > 0);
2428 * Sigh: this one is used to get the client AGAIN within the individual
2429 * server routines. This does not bother h_Holding the host, since
2430 * this is assumed already have been done by the server main loop.
2431 * It does check tokens, since only the server routines can return the
2432 * VICETOKENDEAD error code
2435 GetClient(struct rx_connection *tcon, struct client **cp)
2437 register struct client *client;
2442 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2443 if (client == NULL) {
2445 ("GetClient: no client in conn %p (host %s:%d), VBUSYING\n",
2446 tcon, afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2447 ntohs(rxr_PortOf(tcon))));
2451 if (rxr_CidOf(tcon) != client->sid || rxr_GetEpoch(tcon) != client->VenusEpoch) {
2453 ("GetClient: tcon %p tcon sid %d client sid %d\n",
2454 tcon, rxr_CidOf(tcon), client->sid));
2458 if (client && client->LastCall > client->expTime && client->expTime) {
2460 ("Token for %s at %s:%d expired %d\n", h_UserName(client),
2461 afs_inet_ntoa_r(client->host->host, hoststr),
2462 ntohs(client->host->port), client->expTime));
2464 return VICETOKENDEAD;
2474 PutClient(struct client **cp)
2480 h_ReleaseClient_r(*cp);
2487 /* Client user name for short term use. Note that this is NOT inexpensive */
2489 h_UserName(struct client *client)
2491 static char User[PR_MAXNAMELEN + 1];
2495 lids.idlist_len = 1;
2496 lids.idlist_val = (afs_int32 *) malloc(1 * sizeof(afs_int32));
2497 if (!lids.idlist_val) {
2498 ViceLog(0, ("Failed malloc in h_UserName\n"));
2501 lnames.namelist_len = 0;
2502 lnames.namelist_val = (prname *) 0;
2503 lids.idlist_val[0] = client->ViceId;
2504 if (hpr_IdToName(&lids, &lnames)) {
2505 /* We need to free id we alloced above! */
2506 free(lids.idlist_val);
2507 return "*UNKNOWN USER NAME*";
2509 strncpy(User, lnames.namelist_val[0], PR_MAXNAMELEN);
2510 free(lids.idlist_val);
2511 free(lnames.namelist_val);
2520 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
2521 CEs, CEBlocks, HTs, HTBlocks));
2527 h_PrintClient(register struct host *host, int flags, void *rock)
2529 StreamHandle_t *file = (StreamHandle_t *)rock;
2530 register struct client *client;
2535 time_t LastCall, expTime;
2538 LastCall = host->LastCall;
2539 if (host->hostFlags & HOSTDELETED) {
2543 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2544 "Host %s:%d down = %d, LastCall %s",
2545 afs_inet_ntoa_r(host->host, hoststr),
2546 ntohs(host->port), (host->hostFlags & VENUSDOWN),
2547 afs_ctime(&LastCall, tbuffer,
2549 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2550 for (client = host->FirstClient; client; client = client->next) {
2551 if (!client->deleted) {
2552 expTime = client->expTime;
2553 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2554 " user id=%d, name=%s, sl=%s till %s",
2555 client->ViceId, h_UserName(client),
2557 authClass ? "Authenticated" :
2558 "Not authenticated",
2560 authClass ? afs_ctime(&expTime, tbuffer,
2563 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2564 (void)afs_snprintf(tmpStr, sizeof tmpStr, " CPS-%d is [",
2565 client->CPS.prlist_len);
2566 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2567 if (client->CPS.prlist_val) {
2568 for (i = 0; i > client->CPS.prlist_len; i++) {
2569 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
2570 client->CPS.prlist_val[i]);
2571 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2574 sprintf(tmpStr, "]\n");
2575 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2581 } /*h_PrintClient */
2586 * Print a list of clients, with last security level and token value seen,
2590 h_PrintClients(void)
2596 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
2600 ("Couldn't create client dump file %s\n",
2601 AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2604 now = FT_ApproxTime();
2605 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active users at %s\n",
2606 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
2607 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2608 h_Enumerate(h_PrintClient, (char *)file);
2609 STREAM_REALLYCLOSE(file);
2610 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2617 h_DumpHost(register struct host *host, int flags, void *rock)
2619 StreamHandle_t *file = (StreamHandle_t *)rock;
2626 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2627 "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 [",
2628 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port), host->index,
2629 host->cblist, CheckLock(&host->lock), host->LastCall,
2630 host->ActiveCall, (host->hostFlags & VENUSDOWN),
2631 host->hostFlags & HOSTDELETED, host->Console,
2632 host->hostFlags & CLIENTDELETED, host->hcpsfailed,
2634 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2635 if (host->hcps.prlist_val)
2636 for (i = 0; i < host->hcps.prlist_len; i++) {
2637 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
2638 host->hcps.prlist_val[i]);
2639 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2641 sprintf(tmpStr, "] [");
2642 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2643 if (host->interface)
2644 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
2646 sprintf(tmpStr, " %s:%d",
2647 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
2648 ntohs(host->interface->interface[i].port));
2649 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2651 sprintf(tmpStr, "] refCount:%d hostFlags:%hu\n", host->refCount, host->hostFlags);
2652 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2664 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
2670 ("Couldn't create host dump file %s\n",
2671 AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2674 now = FT_ApproxTime();
2675 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active hosts at %s\n",
2676 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
2677 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2678 h_Enumerate(h_DumpHost, (char *)file);
2679 STREAM_REALLYCLOSE(file);
2680 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2684 #ifdef AFS_DEMAND_ATTACH_FS
2687 * host state serialization
2689 static int h_stateFillHeader(struct host_state_header * hdr);
2690 static int h_stateCheckHeader(struct host_state_header * hdr);
2691 static int h_stateAllocMap(struct fs_dump_state * state);
2692 static int h_stateSaveHost(struct host * host, int flags, void *rock);
2693 static int h_stateRestoreHost(struct fs_dump_state * state);
2694 static int h_stateRestoreIndex(struct host * h, int flags, void *rock);
2695 static int h_stateVerifyHost(struct host * h, int flags, void *rock);
2696 static int h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h, afs_uint32 addr, afs_uint16 port);
2697 static int h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h);
2698 static void h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out);
2699 static void h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out);
2702 /* this procedure saves all host state to disk for fast startup */
2704 h_stateSave(struct fs_dump_state * state)
2706 AssignInt64(state->eof_offset, &state->hdr->h_offset);
2709 ViceLog(0, ("h_stateSave: hostCount=%d\n", hostCount));
2711 /* invalidate host state header */
2712 memset(state->h_hdr, 0, sizeof(struct host_state_header));
2714 if (fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2715 sizeof(struct host_state_header))) {
2720 fs_stateIncEOF(state, sizeof(struct host_state_header));
2722 h_Enumerate_r(h_stateSaveHost, hostList, (char *)state);
2727 h_stateFillHeader(state->h_hdr);
2729 /* write the real header to disk */
2730 state->bail = fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2731 sizeof(struct host_state_header));
2738 * host state serialization
2740 * this procedure restores all host state from a disk for fast startup
2743 h_stateRestore(struct fs_dump_state * state)
2747 /* seek to the right position and read in the host state header */
2748 if (fs_stateReadHeader(state, &state->hdr->h_offset, state->h_hdr,
2749 sizeof(struct host_state_header))) {
2754 /* check the validity of the header */
2755 if (h_stateCheckHeader(state->h_hdr)) {
2760 records = state->h_hdr->records;
2762 if (h_stateAllocMap(state)) {
2767 /* iterate over records restoring host state */
2768 for (i=0; i < records; i++) {
2769 if (h_stateRestoreHost(state) != 0) {
2780 h_stateRestoreIndices(struct fs_dump_state * state)
2782 h_Enumerate_r(h_stateRestoreIndex, hostList, (char *)state);
2787 h_stateRestoreIndex(struct host * h, int flags, void *rock)
2789 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2790 if (cb_OldToNew(state, h->cblist, &h->cblist)) {
2791 return H_ENUMERATE_BAIL(flags);
2797 h_stateVerify(struct fs_dump_state * state)
2799 h_Enumerate_r(h_stateVerifyHost, hostList, (char *)state);
2804 h_stateVerifyHost(struct host * h, int flags, void* rock)
2806 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2810 ViceLog(0, ("h_stateVerifyHost: error: NULL host pointer in linked list\n"));
2811 return H_ENUMERATE_BAIL(flags);
2815 for (i = h->interface->numberOfInterfaces-1; i >= 0; i--) {
2816 if (h_stateVerifyAddrHash(state, h, h->interface->interface[i].addr,
2817 h->interface->interface[i].port)) {
2821 if (h_stateVerifyUuidHash(state, h)) {
2824 } else if (h_stateVerifyAddrHash(state, h, h->host, h->port)) {
2828 if (cb_stateVerifyHCBList(state, h)) {
2836 h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h, afs_uint32 addr, afs_uint16 port)
2838 int ret = 0, found = 0;
2839 struct host *host = NULL;
2840 struct h_AddrHashChain *chain;
2841 int index = h_HashIndex(addr);
2845 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
2846 host = chain->hostPtr;
2848 afs_inet_ntoa_r(addr, tmp);
2849 ViceLog(0, ("h_stateVerifyAddrHash: error: addr hash chain has NULL host ptr (lookup addr %s)\n", tmp));
2853 if ((chain->addr == addr) && (chain->port == port)) {
2855 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr hash entry points to different host struct (%d, %d)\n",
2856 h->index, host->index));
2857 state->flags.warnings_generated = 1;
2862 if (chain_len > FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN) {
2863 ViceLog(0, ("h_stateVerifyAddrHash: error: hash chain length exceeds %d; assuming there's a loop\n",
2864 FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN));
2872 afs_inet_ntoa_r(addr, tmp);
2873 if (state->mode == FS_STATE_LOAD_MODE) {
2874 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s not found in hash\n", tmp));
2878 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr %s not found in hash\n", tmp));
2879 state->flags.warnings_generated = 1;
2888 h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h)
2890 int ret = 0, found = 0;
2891 struct host *host = NULL;
2892 struct h_UuidHashChain *chain;
2893 afsUUID * uuidp = &h->interface->uuid;
2894 int index = h_UuidHashIndex(uuidp);
2898 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
2899 host = chain->hostPtr;
2901 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
2902 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid hash chain has NULL host ptr (lookup uuid %s)\n", tmp));
2906 if (host->interface &&
2907 afs_uuid_equal(&host->interface->uuid, uuidp)) {
2909 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid hash entry points to different host struct (%d, %d)\n",
2910 h->index, host->index));
2911 state->flags.warnings_generated = 1;
2916 if (chain_len > FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN) {
2917 ViceLog(0, ("h_stateVerifyUuidHash: error: hash chain length exceeds %d; assuming there's a loop\n",
2918 FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN));
2926 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
2927 if (state->mode == FS_STATE_LOAD_MODE) {
2928 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid %s not found in hash\n", tmp));
2932 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid %s not found in hash\n", tmp));
2933 state->flags.warnings_generated = 1;
2941 /* create the host state header structure */
2943 h_stateFillHeader(struct host_state_header * hdr)
2945 hdr->stamp.magic = HOST_STATE_MAGIC;
2946 hdr->stamp.version = HOST_STATE_VERSION;
2950 /* check the contents of the host state header structure */
2952 h_stateCheckHeader(struct host_state_header * hdr)
2956 if (hdr->stamp.magic != HOST_STATE_MAGIC) {
2957 ViceLog(0, ("check_host_state_header: invalid state header\n"));
2960 else if (hdr->stamp.version != HOST_STATE_VERSION) {
2961 ViceLog(0, ("check_host_state_header: unknown version number\n"));
2967 /* allocate the host id mapping table */
2969 h_stateAllocMap(struct fs_dump_state * state)
2971 state->h_map.len = state->h_hdr->index_max + 1;
2972 state->h_map.entries = (struct idx_map_entry_t *)
2973 calloc(state->h_map.len, sizeof(struct idx_map_entry_t));
2974 return (state->h_map.entries != NULL) ? 0 : 1;
2977 /* function called by h_Enumerate to save a host to disk */
2979 h_stateSaveHost(struct host * host, int flags, void* rock)
2981 struct fs_dump_state *state = (struct fs_dump_state *) rock;
2982 int if_len=0, hcps_len=0;
2983 struct hostDiskEntry hdsk;
2984 struct host_state_entry_header hdr;
2985 struct Interface * ifp = NULL;
2986 afs_int32 * hcps = NULL;
2987 struct iovec iov[4];
2990 memset(&hdr, 0, sizeof(hdr));
2992 if (state->h_hdr->index_max < host->index) {
2993 state->h_hdr->index_max = host->index;
2996 h_hostToDiskEntry_r(host, &hdsk);
2997 if (host->interface) {
2998 if_len = sizeof(struct Interface) +
2999 ((host->interface->numberOfInterfaces-1) * sizeof(struct AddrPort));
3000 ifp = (struct Interface *) malloc(if_len);
3001 assert(ifp != NULL);
3002 memcpy(ifp, host->interface, if_len);
3003 hdr.interfaces = host->interface->numberOfInterfaces;
3004 iov[iovcnt].iov_base = (char *) ifp;
3005 iov[iovcnt].iov_len = if_len;
3008 if (host->hcps.prlist_val) {
3009 hdr.hcps = host->hcps.prlist_len;
3010 hcps_len = hdr.hcps * sizeof(afs_int32);
3011 hcps = (afs_int32 *) malloc(hcps_len);
3012 assert(hcps != NULL);
3013 memcpy(hcps, host->hcps.prlist_val, hcps_len);
3014 iov[iovcnt].iov_base = (char *) hcps;
3015 iov[iovcnt].iov_len = hcps_len;
3019 if (hdsk.index > state->h_hdr->index_max)
3020 state->h_hdr->index_max = hdsk.index;
3022 hdr.len = sizeof(struct host_state_entry_header) +
3023 sizeof(struct hostDiskEntry) + if_len + hcps_len;
3024 hdr.magic = HOST_STATE_ENTRY_MAGIC;
3026 iov[0].iov_base = (char *) &hdr;
3027 iov[0].iov_len = sizeof(hdr);
3028 iov[1].iov_base = (char *) &hdsk;
3029 iov[1].iov_len = sizeof(struct hostDiskEntry);
3031 if (fs_stateWriteV(state, iov, iovcnt)) {
3032 ViceLog(0, ("h_stateSaveHost: failed to save host %d", host->index));
3036 fs_stateIncEOF(state, hdr.len);
3038 state->h_hdr->records++;
3045 return H_ENUMERATE_BAIL(flags);
3050 /* restores a host from disk */
3052 h_stateRestoreHost(struct fs_dump_state * state)
3054 int ifp_len=0, hcps_len=0, bail=0;
3055 struct host_state_entry_header hdr;
3056 struct hostDiskEntry hdsk;
3057 struct host *host = NULL;
3058 struct Interface *ifp = NULL;
3059 afs_int32 * hcps = NULL;
3060 struct iovec iov[3];
3063 if (fs_stateRead(state, &hdr, sizeof(hdr))) {
3064 ViceLog(0, ("h_stateRestoreHost: failed to read host entry header from dump file '%s'\n",
3070 if (hdr.magic != HOST_STATE_ENTRY_MAGIC) {
3071 ViceLog(0, ("h_stateRestoreHost: fileserver state dump file '%s' is corrupt.\n",
3077 iov[0].iov_base = (char *) &hdsk;
3078 iov[0].iov_len = sizeof(struct hostDiskEntry);
3080 if (hdr.interfaces) {
3081 ifp_len = sizeof(struct Interface) +
3082 ((hdr.interfaces-1) * sizeof(struct AddrPort));
3083 ifp = (struct Interface *) malloc(ifp_len);
3084 assert(ifp != NULL);
3085 iov[iovcnt].iov_base = (char *) ifp;
3086 iov[iovcnt].iov_len = ifp_len;
3090 hcps_len = hdr.hcps * sizeof(afs_int32);
3091 hcps = (afs_int32 *) malloc(hcps_len);
3092 assert(hcps != NULL);
3093 iov[iovcnt].iov_base = (char *) hcps;
3094 iov[iovcnt].iov_len = hcps_len;
3098 if ((ifp_len + hcps_len + sizeof(hdsk) + sizeof(hdr)) != hdr.len) {
3099 ViceLog(0, ("h_stateRestoreHost: host entry header length fields are inconsistent\n"));
3104 if (fs_stateReadV(state, iov, iovcnt)) {
3105 ViceLog(0, ("h_stateRestoreHost: failed to read host entry\n"));
3110 if (!hdr.hcps && hdsk.hcps_valid) {
3111 /* valid, zero-length host cps ; does this ever happen? */
3112 hcps = (afs_int32 *) malloc(sizeof(afs_int32));
3113 assert(hcps != NULL);
3117 assert(host != NULL);
3120 host->interface = ifp;
3123 host->hcps.prlist_val = hcps;
3124 host->hcps.prlist_len = hdr.hcps;
3127 h_diskEntryToHost_r(&hdsk, host);
3128 h_SetupCallbackConn_r(host);
3130 h_AddHostToAddrHashTable_r(host->host, host->port, host);
3133 for (i = ifp->numberOfInterfaces-1; i >= 0; i--) {
3134 if (ifp->interface[i].valid &&
3135 !(ifp->interface[i].addr == host->host &&
3136 ifp->interface[i].port == host->port)) {
3137 h_AddHostToAddrHashTable_r(ifp->interface[i].addr,
3138 ifp->interface[i].port,
3142 h_AddHostToUuidHashTable_r(&ifp->uuid, host);
3144 h_InsertList_r(host);
3146 /* setup host id map entry */
3147 state->h_map.entries[hdsk.index].old_idx = hdsk.index;
3148 state->h_map.entries[hdsk.index].new_idx = host->index;
3160 /* serialize a host structure to disk */
3162 h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out)
3164 out->host = in->host;
3165 out->port = in->port;
3166 out->hostFlags = in->hostFlags;
3167 out->Console = in->Console;
3168 out->hcpsfailed = in->hcpsfailed;
3169 out->LastCall = in->LastCall;
3170 out->ActiveCall = in->ActiveCall;
3171 out->cpsCall = in->cpsCall;
3172 out->cblist = in->cblist;
3173 #ifdef FS_STATS_DETAILED
3174 out->InSameNetwork = in->InSameNetwork;
3177 /* special fields we save, but are not memcpy'd back on restore */
3178 out->index = in->index;
3179 out->hcps_len = in->hcps.prlist_len;
3180 out->hcps_valid = (in->hcps.prlist_val == NULL) ? 0 : 1;
3183 /* restore a host structure from disk */
3185 h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out)
3187 out->host = in->host;
3188 out->port = in->port;
3189 out->hostFlags = in->hostFlags;
3190 out->Console = in->Console;
3191 out->hcpsfailed = in->hcpsfailed;
3192 out->LastCall = in->LastCall;
3193 out->ActiveCall = in->ActiveCall;
3194 out->cpsCall = in->cpsCall;
3195 out->cblist = in->cblist;
3196 #ifdef FS_STATS_DETAILED
3197 out->InSameNetwork = in->InSameNetwork;
3201 /* index translation routines */
3203 h_OldToNew(struct fs_dump_state * state, afs_uint32 old, afs_uint32 * new)
3207 /* hosts use a zero-based index, so old==0 is valid */
3209 if (old >= state->h_map.len) {
3210 ViceLog(0, ("h_OldToNew: index %d is out of range\n", old));
3212 } else if (state->h_map.entries[old].old_idx != old) { /* sanity check */
3213 ViceLog(0, ("h_OldToNew: index %d points to an invalid host record\n", old));
3216 *new = state->h_map.entries[old].new_idx;
3221 #endif /* AFS_DEMAND_ATTACH_FS */
3225 * This counts the number of workstations, the number of active workstations,
3226 * and the number of workstations declared "down" (i.e. not heard from
3227 * recently). An active workstation has received a call since the cutoff
3228 * time argument passed.
3231 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
3233 register struct host *host;
3234 register int num = 0, active = 0, del = 0;
3238 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
3239 if (!(host->hostFlags & HOSTDELETED)) {
3241 if (host->ActiveCall > cutofftime)
3243 if (host->hostFlags & VENUSDOWN)
3247 if (count != hostCount) {
3248 ViceLog(0, ("h_GetWorkStats found %d of %d hosts\n", count, hostCount));
3249 } else if (host != NULL) {
3250 ViceLog(0, ("h_GetWorkStats found more than %d hosts\n", hostCount));
3251 ShutDownAndCore(PANIC);
3261 } /*h_GetWorkStats */
3264 /*------------------------------------------------------------------------
3265 * PRIVATE h_ClassifyAddress
3268 * Given a target IP address and a candidate IP address (both
3269 * in host byte order), classify the candidate into one of three
3270 * buckets in relation to the target by bumping the counters passed
3274 * a_targetAddr : Target address.
3275 * a_candAddr : Candidate address.
3276 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
3277 * addresses are either in the same network
3278 * or the same subnet.
3279 * a_diffSubnetP : ...when the candidate is in a different
3281 * a_diffNetworkP : ...when the candidate is in a different
3288 * The target and candidate addresses are both in host byte
3289 * order, NOT network byte order, when passed in.
3293 *------------------------------------------------------------------------*/
3296 h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
3297 afs_int32 * a_sameNetOrSubnetP, afs_int32 * a_diffSubnetP,
3298 afs_int32 * a_diffNetworkP)
3299 { /*h_ClassifyAddress */
3301 afs_uint32 targetNet;
3302 afs_uint32 targetSubnet;
3304 afs_uint32 candSubnet;
3307 * Put bad values into the subnet info to start with.
3309 targetSubnet = (afs_uint32) 0;
3310 candSubnet = (afs_uint32) 0;
3313 * Pull out the network and subnetwork numbers from the target
3314 * and candidate addresses. We can short-circuit this whole
3315 * affair if the target and candidate addresses are not of the
3318 if (IN_CLASSA(a_targetAddr)) {
3319 if (!(IN_CLASSA(a_candAddr))) {
3320 (*a_diffNetworkP)++;
3323 targetNet = a_targetAddr & IN_CLASSA_NET;
3324 candNet = a_candAddr & IN_CLASSA_NET;
3325 if (IN_SUBNETA(a_targetAddr))
3326 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
3327 if (IN_SUBNETA(a_candAddr))
3328 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
3329 } else if (IN_CLASSB(a_targetAddr)) {
3330 if (!(IN_CLASSB(a_candAddr))) {
3331 (*a_diffNetworkP)++;
3334 targetNet = a_targetAddr & IN_CLASSB_NET;
3335 candNet = a_candAddr & IN_CLASSB_NET;
3336 if (IN_SUBNETB(a_targetAddr))
3337 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
3338 if (IN_SUBNETB(a_candAddr))
3339 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
3340 } /*Class B target */
3341 else if (IN_CLASSC(a_targetAddr)) {
3342 if (!(IN_CLASSC(a_candAddr))) {
3343 (*a_diffNetworkP)++;
3346 targetNet = a_targetAddr & IN_CLASSC_NET;
3347 candNet = a_candAddr & IN_CLASSC_NET;
3350 * Note that class C addresses can't have subnets,
3351 * so we leave the defaults untouched.
3353 } /*Class C target */
3355 targetNet = a_targetAddr;
3356 candNet = a_candAddr;
3357 } /*Class D address */
3360 * Now, simply compare the extracted net and subnet values for
3361 * the two addresses (which at this point are known to be of the
3364 if (targetNet == candNet) {
3365 if (targetSubnet == candSubnet)
3366 (*a_sameNetOrSubnetP)++;
3370 (*a_diffNetworkP)++;
3372 } /*h_ClassifyAddress */
3375 /*------------------------------------------------------------------------
3376 * EXPORTED h_GetHostNetStats
3379 * Iterate through the host table, and classify each (non-deleted)
3380 * host entry into ``proximity'' categories (same net or subnet,
3381 * different subnet, different network).
3384 * a_numHostsP : Set to total number of (non-deleted) hosts.
3385 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
3386 * a_diffSubnetP : Set to # hosts on diff subnet as server.
3387 * a_diffNetworkP : Set to # hosts on diff network as server.
3393 * We only count non-deleted hosts. The storage pointed to by our
3394 * parameters is zeroed upon entry.
3398 *------------------------------------------------------------------------*/
3401 h_GetHostNetStats(afs_int32 * a_numHostsP, afs_int32 * a_sameNetOrSubnetP,
3402 afs_int32 * a_diffSubnetP, afs_int32 * a_diffNetworkP)
3403 { /*h_GetHostNetStats */
3405 register struct host *hostP; /*Ptr to current host entry */
3406 register afs_uint32 currAddr_HBO; /*Curr host addr, host byte order */
3410 * Clear out the storage pointed to by our parameters.
3412 *a_numHostsP = (afs_int32) 0;
3413 *a_sameNetOrSubnetP = (afs_int32) 0;
3414 *a_diffSubnetP = (afs_int32) 0;
3415 *a_diffNetworkP = (afs_int32) 0;
3418 for (count = 0, hostP = hostList; hostP && count < hostCount; hostP = hostP->next, count++) {
3419 if (!(hostP->hostFlags & HOSTDELETED)) {
3421 * Bump the number of undeleted host entries found.
3422 * In classifying the current entry's address, make
3423 * sure to first convert to host byte order.
3426 currAddr_HBO = (afs_uint32) ntohl(hostP->host);
3427 h_ClassifyAddress(FS_HostAddr_HBO, currAddr_HBO,
3428 a_sameNetOrSubnetP, a_diffSubnetP,
3430 } /*Only look at non-deleted hosts */
3431 } /*For each host record hashed to this index */
3432 if (count != hostCount) {
3433 ViceLog(0, ("h_GetHostNetStats found %d of %d hosts\n", count, hostCount));
3434 } else if (hostP != NULL) {
3435 ViceLog(0, ("h_GetHostNetStats found more than %d hosts\n", hostCount));
3436 ShutDownAndCore(PANIC);
3439 } /*h_GetHostNetStats */
3441 static afs_uint32 checktime;
3442 static afs_uint32 clientdeletetime;
3443 static struct AFSFid zerofid;
3447 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
3448 * Since it can serialize them, and pile up, it should be a separate LWP
3449 * from other events.
3453 CheckHost(register struct host *host, int flags, void *rock)
3455 register struct client *client;
3456 struct rx_connection *cb_conn = NULL;
3459 #ifdef AFS_DEMAND_ATTACH_FS
3460 /* kill the checkhost lwp ASAP during shutdown */
3462 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3464 return H_ENUMERATE_BAIL(flags);
3469 /* Host is held by h_Enumerate */
3471 for (client = host->FirstClient; client; client = client->next) {
3472 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3473 client->deleted = 1;
3474 host->hostFlags |= CLIENTDELETED;
3477 if (host->LastCall < checktime) {
3479 if (!(host->hostFlags & HOSTDELETED)) {
3480 host->hostFlags |= HWHO_INPROGRESS;
3481 cb_conn = host->callback_rxcon;
3482 rx_GetConnection(cb_conn);
3483 if (host->LastCall < clientdeletetime) {
3484 host->hostFlags |= HOSTDELETED;
3485 if (!(host->hostFlags & VENUSDOWN)) {
3486 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3487 if (host->interface) {
3490 RXAFSCB_InitCallBackState3(cb_conn,
3496 RXAFSCB_InitCallBackState(cb_conn);
3499 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3502 (void)afs_inet_ntoa_r(host->host, hoststr);
3504 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3505 hoststr, ntohs(host->port)));
3506 host->hostFlags |= VENUSDOWN;
3508 /* Note: it's safe to delete hosts even if they have call
3509 * back state, because break delayed callbacks (called when a
3510 * message is received from the workstation) will always send a
3511 * break all call backs to the workstation if there is no
3516 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3518 (void)afs_inet_ntoa_r(host->host, hoststr);
3519 if (host->interface) {
3520 afsUUID uuid = host->interface->uuid;
3522 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3525 if (MultiProbeAlternateAddress_r(host)) {
3526 ViceLog(0,("CheckHost: Probing all interfaces of host %s:%d failed, code %d\n",
3527 hoststr, ntohs(host->port), code));
3528 host->hostFlags |= VENUSDOWN;
3533 code = RXAFSCB_Probe(cb_conn);
3537 ("CheckHost: Probe failed for host %s:%d, code %d\n",
3538 hoststr, ntohs(host->port), code));
3539 host->hostFlags |= VENUSDOWN;
3545 rx_PutConnection(cb_conn);
3548 host->hostFlags &= ~HWHO_INPROGRESS;
3559 CheckHost_r(register struct host *host, int flags, void *dummy)
3561 register struct client *client;
3562 struct rx_connection *cb_conn = NULL;
3565 #ifdef AFS_DEMAND_ATTACH_FS
3566 /* kill the checkhost lwp ASAP during shutdown */
3568 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3570 return H_ENUMERATE_BAIL(flags);
3575 /* Host is held by h_Enumerate_r */
3576 for (client = host->FirstClient; client; client = client->next) {
3577 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3578 client->deleted = 1;
3579 host->hostFlags |= CLIENTDELETED;
3582 if (host->LastCall < checktime) {
3584 if (!(host->hostFlags & HOSTDELETED)) {
3585 cb_conn = host->callback_rxcon;
3586 rx_GetConnection(cb_conn);
3587 if (host->LastCall < clientdeletetime) {
3588 host->hostFlags |= HOSTDELETED;
3589 if (!(host->hostFlags & VENUSDOWN)) {
3590 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3591 if (host->interface) {
3594 RXAFSCB_InitCallBackState3(cb_conn,
3600 RXAFSCB_InitCallBackState(cb_conn);
3603 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3606 (void)afs_inet_ntoa_r(host->host, hoststr);
3608 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3609 hoststr, ntohs(host->port)));
3610 host->hostFlags |= VENUSDOWN;
3612 /* Note: it's safe to delete hosts even if they have call
3613 * back state, because break delayed callbacks (called when a
3614 * message is received from the workstation) will always send a
3615 * break all call backs to the workstation if there is no
3620 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3622 (void)afs_inet_ntoa_r(host->host, hoststr);
3623 if (host->interface) {
3624 afsUUID uuid = host->interface->uuid;
3626 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3629 if (MultiProbeAlternateAddress_r(host)) {
3630 ViceLog(0,("CheckHost_r: Probing all interfaces of host %s:%d failed, code %d\n",
3631 hoststr, ntohs(host->port), code));
3632 host->hostFlags |= VENUSDOWN;
3637 code = RXAFSCB_Probe(cb_conn);
3641 ("CheckHost_r: Probe failed for host %s:%d, code %d\n",
3642 hoststr, ntohs(host->port), code));
3643 host->hostFlags |= VENUSDOWN;
3649 rx_PutConnection(cb_conn);
3661 * Set VenusDown for any hosts that have not had a call in 15 minutes and
3662 * don't respond to a probe. Note that VenusDown can only be cleared if
3663 * a message is received from the host (see ServerLWP in file.c).
3664 * Delete hosts that have not had any calls in 1 hour, clients that
3665 * have not had any calls in 15 minutes.
3667 * This routine is called roughly every 5 minutes.
3672 afs_uint32 now = FT_ApproxTime();
3674 memset(&zerofid, 0, sizeof(zerofid));
3676 * Send a probe to the workstation if it hasn't been heard from in
3679 checktime = now - 15 * 60;
3680 clientdeletetime = now - 120 * 60; /* 2 hours ago */
3683 h_Enumerate_r(CheckHost_r, hostList, NULL);
3688 * This is called with host locked and held. At this point, the
3689 * hostAddrHashTable has an entry for the primary addr/port inserted
3690 * by h_Alloc_r(). No other interfaces should be considered valid.
3692 * The addresses in the interfaceAddr list are in host byte order.
3695 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
3702 struct Interface *interface;
3705 afs_uint16 port7001 = htons(7001);
3710 number = interf->numberOfInterfaces;
3711 myAddr = host->host; /* current interface address */
3712 myPort = host->port; /* current port */
3715 ("initInterfaceAddr : host %s:%d numAddr %d\n",
3716 afs_inet_ntoa_r(myAddr, hoststr), ntohs(myPort), number));
3718 /* validation checks */
3719 if (number < 0 || number > AFS_MAX_INTERFACE_ADDR) {
3721 ("Invalid number of alternate addresses is %d\n", number));
3726 * The client's notion of its own IP addresses is not reliable.
3728 * 1. The client list might contain private address ranges which
3729 * are likely to be re-used by many clients allocated addresses
3732 * 2. The client list will not include any public addresses that
3733 * are hidden by a NAT.
3735 * 3. Private address ranges that are exposed to the server will
3736 * be obtained from the rx connections that use them.
3738 * 4. Lists provided by the client are not necessarily truthful.
3739 * Many existing clients (UNIX) do not refresh the IP address
3740 * list as the actual assigned addresses change. The end result
3741 * is that they report the initial address list for the lifetime
3742 * of the process. In other words, a client can report addresses
3743 * that they are in fact not using. Adding these addresses to
3744 * the host interface list without verification is not only
3745 * pointless, it is downright dangerous.
3747 * We therefore do not add alternate addresses to the addr hash table.
3748 * We only use them for multi-rx callback breaks.
3752 * Convert IP addresses to network byte order, and remove
3753 * duplicate IP addresses from the interface list, and
3754 * determine whether or not the incoming addr/port is
3755 * listed. Note that if the address matches it is not
3756 * truly a match because the port number for the entries
3757 * in the interface list are port 7001 and the port number
3758 * for this connection might not be 7001.
3760 for (i = 0, count = 0, found = 0; i < number; i++) {
3761 interf->addr_in[i] = htonl(interf->addr_in[i]);
3762 for (j = 0; j < count; j++) {
3763 if (interf->addr_in[j] == interf->addr_in[i])
3767 interf->addr_in[count] = interf->addr_in[i];
3768 if (interf->addr_in[count] == myAddr &&
3776 * Allocate and initialize an interface structure for this host.
3779 interface = (struct Interface *)
3780 malloc(sizeof(struct Interface) +
3781 (sizeof(struct AddrPort) * (count - 1)));
3783 ViceLog(0, ("Failed malloc in initInterfaceAddr_r 1\n"));
3786 interface->numberOfInterfaces = count;
3788 interface = (struct Interface *)
3789 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * count));
3791 ViceLog(0, ("Failed malloc in initInterfaceAddr_r 2\n"));
3794 interface->numberOfInterfaces = count + 1;
3795 interface->interface[count].addr = myAddr;
3796 interface->interface[count].port = myPort;
3797 interface->interface[count].valid = 1;
3800 for (i = 0; i < count; i++) {
3802 interface->interface[i].addr = interf->addr_in[i];
3803 /* We store the port as 7001 because the addresses reported by
3804 * TellMeAboutYourself and WhoAreYou RPCs are only valid if they
3805 * are coming from fully connected hosts (no NAT/PATs)
3807 interface->interface[i].port = port7001;
3808 interface->interface[i].valid =
3809 (interf->addr_in[i] == myAddr && port7001 == myPort) ? 1 : 0;
3812 interface->uuid = interf->uuid;
3814 assert(!host->interface);
3815 host->interface = interface;
3817 if (LogLevel >= 125) {
3818 afsUUID_to_string(&interface->uuid, uuidstr, 127);
3820 ViceLog(125, ("--- uuid %s\n", uuidstr));
3821 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
3822 ViceLog(125, ("--- alt address %s:%d\n",
3823 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
3824 ntohs(host->interface->interface[i].port)));
3831 /* deleted a HashChain structure for this address and host */
3832 /* returns 1 on success */
3834 h_DeleteHostFromAddrHashTable_r(afs_uint32 addr, afs_uint16 port,
3838 register struct h_AddrHashChain **hp, *th;
3840 if (addr == 0 && port == 0)
3843 for (hp = &hostAddrHashTable[h_HashIndex(addr)]; (th = *hp);
3845 assert(th->hostPtr);
3846 if (th->hostPtr == host && th->addr == addr && th->port == port) {
3847 ViceLog(125, ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d)\n",
3848 host, afs_inet_ntoa_r(host->host, hoststr),
3849 ntohs(host->port)));
3856 ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) not found\n",
3857 host, afs_inet_ntoa_r(host->host, hoststr),
3858 ntohs(host->port)));
3864 ** prints out all alternate interface address for the host. The 'level'
3865 ** parameter indicates what level of debugging sets this output
3868 printInterfaceAddr(struct host *host, int level)
3873 if (host->interface) {
3874 /* check alternate addresses */
3875 number = host->interface->numberOfInterfaces;
3877 ViceLog(level, ("no-addresses "));
3879 for (i = 0; i < number; i++)
3880 ViceLog(level, ("%s:%d ", afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
3881 ntohs(host->interface->interface[i].port)));
3884 ViceLog(level, ("\n"));