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 = RX_SECIDX_NULL;
314 afsconf_ClientAuthToken(&info, 0, &sc, &scIndex, NULL);
316 if ((scIndex == RX_SECIDX_NULL) && (sc == NULL))
317 sc = rxnull_NewClientSecurityObject();
318 if (scIndex == RX_SECIDX_NULL)
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 locked */
847 if (h_NBLock_r(host) != 0) {
850 ("Warning: h_TossStuff_r failed; Host %" AFS_PTR_FMT " (%s:%d) was locked.\n",
851 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
857 /* if somebody still has this host held */
858 /* we must check this _after_ h_NBLock_r, since h_NBLock_r can drop and
859 * reacquire H_LOCK */
860 if (host->refCount > 0) {
863 ("Warning: h_TossStuff_r failed; Host %" AFS_PTR_FMT " (%s:%d) was held.\n",
864 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
868 /* ASSUMPTION: rxi_FreeConnection() does not yield */
869 for (cp = &host->FirstClient; (client = *cp);) {
870 if ((host->hostFlags & HOSTDELETED) || client->deleted) {
872 ObtainWriteLockNoBlock(&client->lock, code);
876 ("Warning: h_TossStuff_r failed: Host %p (%s:%d) "
877 "client %p was locked.\n",
878 host, afs_inet_ntoa_r(host->host, hoststr),
879 ntohs(host->port), client));
883 if (client->refCount) {
886 ("Warning: h_TossStuff_r failed: Host %p (%s:%d) "
887 "client %p refcount %d.\n",
888 host, afs_inet_ntoa_r(host->host, hoststr),
889 ntohs(host->port), client, client->refCount));
890 /* This is the same thing we do if the host is locked */
891 ReleaseWriteLock(&client->lock);
894 client->CPS.prlist_len = 0;
895 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
896 free(client->CPS.prlist_val);
897 client->CPS.prlist_val = NULL;
898 CurrentConnections--;
900 ReleaseWriteLock(&client->lock);
906 /* We've just cleaned out all the deleted clients; clear the flag */
907 host->hostFlags &= ~CLIENTDELETED;
909 if (host->hostFlags & HOSTDELETED) {
910 register struct rx_connection *rxconn;
911 struct AddrPort hostAddrPort;
914 if (host->Console & 1)
916 if ((rxconn = host->callback_rxcon)) {
917 host->callback_rxcon = (struct rx_connection *)0;
918 rx_DestroyConnection(rxconn);
920 if (host->hcps.prlist_val)
921 free(host->hcps.prlist_val);
922 host->hcps.prlist_val = NULL;
923 host->hcps.prlist_len = 0;
924 DeleteAllCallBacks_r(host, 1);
925 host->hostFlags &= ~RESETDONE; /* just to be safe */
927 /* if alternate addresses do not exist */
928 if (!(host->interface)) {
929 h_DeleteHostFromAddrHashTable_r(host->host, host->port, host);
931 h_DeleteHostFromUuidHashTable_r(host);
932 h_DeleteHostFromAddrHashTable_r(host->host, host->port, host);
933 /* delete the hash entry for each valid alternate addresses */
934 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
935 hostAddrPort = host->interface->interface[i];
937 * if the interface addr/port is the primary, we already
938 * removed it. If the addr/port is not valid, its not
941 if (hostAddrPort.valid &&
942 (host->host != hostAddrPort.addr ||
943 host->port != hostAddrPort.port))
944 h_DeleteHostFromAddrHashTable_r(hostAddrPort.addr, hostAddrPort.port, host);
946 free(host->interface);
947 host->interface = NULL;
948 } /* if alternate address exists */
950 h_DeleteList_r(host); /* remove host from global host List */
957 /* h_Enumerate: Calls (*proc)(host, held, param) for at least each host in the
958 * system at the start of the enumeration (perhaps more). Hosts may be deleted
959 * (have delete flag set); ditto for clients. refCount is always incremented
960 * before (*proc) is called. The param flags is passed to (*proc) as the
961 * param flags, permitting (*proc) to stop the enumeration (BAIL).
963 * Needed? Why not always h_Hold_r and h_Release_r in (*proc), or even -never-
964 * h_Hold_r or h_Release_r in (*proc)?
966 * **The proc should return 0 if the host should be released, 1 if it should
967 * be held after enumeration.
970 h_Enumerate(int (*proc) (struct host*, int, void *), void *param)
972 register struct host *host, **list;
974 register int i, count;
977 if (hostCount == 0) {
981 list = (struct host **)malloc(hostCount * sizeof(struct host *));
983 ViceLog(0, ("Failed malloc in h_Enumerate (list)\n"));
986 flags = (int *)malloc(hostCount * sizeof(int));
988 ViceLog(0, ("Failed malloc in h_Enumerate (flags)\n"));
991 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
995 if (count != hostCount) {
996 ViceLog(0, ("h_Enumerate found %d of %d hosts\n", count, hostCount));
997 } else if (host != NULL) {
998 ViceLog(0, ("h_Enumerate found more than %d hosts\n", hostCount));
999 ShutDownAndCore(PANIC);
1002 for (i = 0; i < count; i++) {
1003 flags[i] = (*proc) (list[i], flags[i], param);
1004 h_Release_r(list[i]);
1005 /* bail out of the enumeration early */
1006 if (H_ENUMERATE_ISSET_BAIL(flags[i]))
1010 free((void *)flags);
1014 /* h_Enumerate_r (revised):
1015 * Calls (*proc)(host, flags, param) for each host in hostList, starting
1016 * at enumstart. Called only under H_LOCK. Hosts may be deleted (have
1017 * delete flag set); ditto for clients. refCount is always incremented
1018 * before (*proc) is called. The param flags is passed to (*proc) as the
1019 * param flags, permitting (*proc) to stop the enumeration (BAIL).
1021 * Needed? Why not always h_Hold_r and h_Release_r in (*proc), or even -never-
1022 * h_Hold_r or h_Release_r in (*proc)?
1024 * **The proc should return 0 if the host should be released, 1 if it should
1025 * be held after enumeration.
1028 h_Enumerate_r(int (*proc) (struct host *, int, void *),
1029 struct host *enumstart, void *param)
1031 register struct host *host, *next;
1036 if (hostCount == 0) {
1039 h_Hold_r(enumstart);
1040 for (count = 0, host = enumstart; host && count < hostCount; host = next, flags = nflags, count++) {
1042 if (next && !H_ENUMERATE_ISSET_BAIL(flags))
1044 flags = (*proc) (host, flags, param);
1045 if (H_ENUMERATE_ISSET_BAIL(flags)) {
1046 h_Release_r(host); /* this might free up the host */
1049 h_Release_r(host); /* this might free up the host */
1052 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", hostCount));
1053 ShutDownAndCore(PANIC);
1055 } /*h_Enumerate_r */
1058 /* inserts a new HashChain structure corresponding to this UUID */
1060 h_AddHostToUuidHashTable_r(struct afsUUID *uuid, struct host *host)
1063 struct h_UuidHashChain *chain;
1064 char uuid1[128], uuid2[128];
1067 /* hash into proper bucket */
1068 index = h_UuidHashIndex(uuid);
1070 /* don't add the same entry multiple times */
1071 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
1072 if (!chain->hostPtr)
1075 if (chain->hostPtr->interface &&
1076 afs_uuid_equal(&chain->hostPtr->interface->uuid, uuid)) {
1077 if (LogLevel >= 125) {
1078 afsUUID_to_string(&chain->hostPtr->interface->uuid, uuid1,
1080 afsUUID_to_string(uuid, uuid2, 127);
1081 ViceLog(125, ("h_AddHostToUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s) exists as %s:%d (uuid %s)\n",
1083 afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1084 ntohs(chain->hostPtr->port), uuid2));
1090 /* insert into beginning of list for this bucket */
1091 chain = (struct h_UuidHashChain *)malloc(sizeof(struct h_UuidHashChain));
1093 ViceLog(0, ("Failed malloc in h_AddHostToUuidHashTable_r\n"));
1096 chain->hostPtr = host;
1097 chain->next = hostUuidHashTable[index];
1098 hostUuidHashTable[index] = chain;
1101 afsUUID_to_string(uuid, uuid2, 127);
1103 ("h_AddHostToUuidHashTable_r: host %p (%s:%d) added as uuid %s\n",
1104 host, afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1105 ntohs(chain->hostPtr->port), uuid2));
1108 /* deletes a HashChain structure corresponding to this host */
1110 h_DeleteHostFromUuidHashTable_r(struct host *host)
1113 register struct h_UuidHashChain **uhp, *uth;
1117 if (!host->interface)
1120 /* hash into proper bucket */
1121 index = h_UuidHashIndex(&host->interface->uuid);
1123 if (LogLevel >= 125)
1124 afsUUID_to_string(&host->interface->uuid, uuid1, 127);
1125 for (uhp = &hostUuidHashTable[index]; (uth = *uhp); uhp = &uth->next) {
1126 assert(uth->hostPtr);
1127 if (uth->hostPtr == host) {
1129 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d)\n",
1130 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1131 ntohs(host->port)));
1138 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d) not found\n",
1139 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1140 ntohs(host->port)));
1144 /* inserts a new HashChain structure corresponding to this address */
1146 h_AddHostToAddrHashTable_r(afs_uint32 addr, afs_uint16 port, struct host *host)
1149 struct h_AddrHashChain *chain;
1152 /* hash into proper bucket */
1153 index = h_HashIndex(addr);
1155 /* don't add the same address:port pair entry multiple times */
1156 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1157 if (chain->addr == addr && chain->port == port) {
1158 if (chain->hostPtr == host) {
1160 ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) already hashed\n",
1161 host, afs_inet_ntoa_r(chain->addr, hoststr),
1162 ntohs(chain->port)));
1165 if (!(chain->hostPtr->hostFlags & HOSTDELETED)) {
1167 ("h_AddHostToAddrHashTable_r: refusing to hash host %" AFS_PTR_FMT ", %"
1168 AFS_PTR_FMT " (%s:%d) already hashed\n",
1169 host, chain->hostPtr, afs_inet_ntoa_r(chain->addr, hoststr),
1170 ntohs(chain->port)));
1176 /* insert into beginning of list for this bucket */
1177 chain = (struct h_AddrHashChain *)malloc(sizeof(struct h_AddrHashChain));
1179 ViceLog(0, ("Failed malloc in h_AddHostToAddrHashTable_r\n"));
1182 chain->hostPtr = host;
1183 chain->next = hostAddrHashTable[index];
1186 hostAddrHashTable[index] = chain;
1187 ViceLog(125, ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " added as %s:%d\n",
1188 host, afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1192 * This is called with host locked and held.
1193 * It is called to either validate or add an additional interface
1194 * address/port on the specified host.
1196 * All addresses are in network byte order.
1199 addInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1203 struct Interface *interface;
1204 char hoststr[16], hoststr2[16];
1207 assert(host->interface);
1210 * Make sure this address is on the list of known addresses
1213 number = host->interface->numberOfInterfaces;
1214 for (i = 0; i < number; i++) {
1215 if (host->interface->interface[i].addr == addr &&
1216 host->interface->interface[i].port == port) {
1218 ("addInterfaceAddr : found host %" AFS_PTR_FMT " (%s:%d) adding %s:%d%s\n",
1219 host, afs_inet_ntoa_r(host->host, hoststr),
1220 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1221 ntohs(port), host->interface->interface[i].valid ? "" :
1224 if (host->interface->interface[i].valid == 0) {
1225 host->interface->interface[i].valid = 1;
1226 h_AddHostToAddrHashTable_r(addr, port, host);
1232 ViceLog(125, ("addInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) adding %s:%d\n",
1233 host, afs_inet_ntoa_r(host->host, hoststr),
1234 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1237 interface = (struct Interface *)
1238 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * number));
1240 ViceLog(0, ("Failed malloc in addInterfaceAddr_r\n"));
1243 interface->numberOfInterfaces = number + 1;
1244 interface->uuid = host->interface->uuid;
1245 for (i = 0; i < number; i++)
1246 interface->interface[i] = host->interface->interface[i];
1248 /* Add the new valid interface */
1249 interface->interface[number].addr = addr;
1250 interface->interface[number].port = port;
1251 interface->interface[number].valid = 1;
1252 h_AddHostToAddrHashTable_r(addr, port, host);
1253 free(host->interface);
1254 host->interface = interface;
1261 * This is called with host locked and held.
1263 * All addresses are in network byte order.
1266 removeInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1270 struct Interface *interface;
1271 char hoststr[16], hoststr2[16];
1274 assert(host->interface);
1276 ViceLog(125, ("removeInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1277 host, afs_inet_ntoa_r(host->host, hoststr),
1278 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1282 * Make sure this address is on the list of known addresses
1285 interface = host->interface;
1286 number = host->interface->numberOfInterfaces;
1287 for (i = 0; i < number; i++) {
1288 if (interface->interface[i].addr == addr &&
1289 interface->interface[i].port == port) {
1290 if (interface->interface[i].valid)
1291 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1293 for (; i < number; i++) {
1294 interface->interface[i] = interface->interface[i+1];
1296 interface->numberOfInterfaces = number;
1305 * This is called with host locked and held.
1307 * All addresses are in network byte order.
1310 invalidateInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1314 struct Interface *interface;
1315 char hoststr[16], hoststr2[16];
1318 assert(host->interface);
1320 ViceLog(125, ("invalidateInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1321 host, afs_inet_ntoa_r(host->host, hoststr),
1322 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1326 * Make sure this address is on the list of known addresses
1329 interface = host->interface;
1330 number = host->interface->numberOfInterfaces;
1331 for (i = 0; i < number; i++) {
1332 if (interface->interface[i].addr == addr &&
1333 interface->interface[i].port == port) {
1334 if (interface->interface[i].valid) {
1335 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1336 interface->interface[i].valid = 0;
1347 * This is called with host locked and held. This function differs
1348 * from removeInterfaceAddr_r in that it is called when the address
1349 * is being removed from the host regardless of whether or not there
1350 * is an interface list for the host. This function will delete the
1351 * host if there are no addresses left on it.
1353 * All addresses are in network byte order.
1356 removeAddress_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1359 char hoststr[16], hoststr2[16];
1360 struct rx_connection *rxconn;
1362 if (!host->interface || host->interface->numberOfInterfaces == 1) {
1363 if (host->host == addr && host->port == port) {
1365 ("Removing only address for host %" AFS_PTR_FMT " (%s:%d), deleting host.\n",
1366 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1367 host->hostFlags |= HOSTDELETED;
1369 * Do not remove the primary addr/port from the hash table.
1370 * It will be ignored due to the HOSTDELETED flag and will
1371 * be removed when h_TossStuff_r() cleans up the HOSTDELETED
1372 * host. Removing it here will only result in a search for
1373 * the host/addr/port in the hash chain which will fail.
1377 ("Removing address that does not belong to host %" AFS_PTR_FMT " (%s:%d).\n",
1378 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1381 if (host->host == addr && host->port == port) {
1382 removeInterfaceAddr_r(host, addr, port);
1384 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1385 if (host->interface->interface[i].valid) {
1387 ("Removed address for host %" AFS_PTR_FMT " (%s:%d), new primary interface %s:%d.\n",
1388 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1389 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr2),
1390 ntohs(host->interface->interface[i].port)));
1391 host->host = host->interface->interface[i].addr;
1392 host->port = host->interface->interface[i].port;
1393 h_AddHostToAddrHashTable_r(host->host, host->port, host);
1398 if (i == host->interface->numberOfInterfaces) {
1400 ("Removed only address for host %" AFS_PTR_FMT " (%s:%d), no valid alternate interfaces, deleting host.\n",
1401 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1402 host->hostFlags |= HOSTDELETED;
1403 /* addr/port was removed from the hash table */
1407 rxconn = host->callback_rxcon;
1408 host->callback_rxcon = NULL;
1411 rx_DestroyConnection(rxconn);
1416 sc = rxnull_NewClientSecurityObject();
1417 host->callback_rxcon =
1418 rx_NewConnection(host->host, host->port, 1, sc, 0);
1419 rx_SetConnDeadTime(host->callback_rxcon, 50);
1420 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
1423 /* not the primary addr/port, just invalidate it */
1424 invalidateInterfaceAddr_r(host, addr, port);
1431 h_threadquota(int waiting)
1436 } else if (lwps > 32) {
1439 } else if (lwps > 16) {
1449 /* If found, host is returned with refCount incremented */
1451 h_GetHost_r(struct rx_connection *tcon)
1454 struct host *oldHost;
1456 struct interfaceAddr interf;
1457 int interfValid = 0;
1458 struct Identity *identP = NULL;
1461 char hoststr[16], hoststr2[16];
1463 struct rx_connection *cb_conn = NULL;
1464 struct rx_connection *cb_in = NULL;
1466 caps.Capabilities_val = NULL;
1468 haddr = rxr_HostOf(tcon);
1469 hport = rxr_PortOf(tcon);
1472 rx_DestroyConnection(cb_in);
1475 if (caps.Capabilities_val)
1476 free(caps.Capabilities_val);
1477 caps.Capabilities_val = NULL;
1478 caps.Capabilities_len = 0;
1481 if (h_Lookup_r(haddr, hport, &host))
1483 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
1484 if (host && !identP && !(host->Console & 1)) {
1485 /* This is a new connection, and we already have a host
1486 * structure for this address. Verify that the identity
1487 * of the caller matches the identity in the host structure.
1489 if ((host->hostFlags & HWHO_INPROGRESS) &&
1490 h_threadquota(host->lock.num_waiting)) {
1496 if (!(host->hostFlags & ALTADDR) ||
1497 (host->hostFlags & HOSTDELETED)) {
1498 /* Another thread is doing initialization
1499 * or this host was deleted while we
1500 * waited for the lock. */
1503 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1504 host, afs_inet_ntoa_r(host->host, hoststr),
1505 ntohs(host->port)));
1509 host->hostFlags |= HWHO_INPROGRESS;
1510 host->hostFlags &= ~ALTADDR;
1512 /* We received a new connection from an IP address/port
1513 * that is associated with 'host' but the address/port of
1514 * the callback connection does not have to match it.
1515 * If there is a match, we can use the existing callback
1516 * connection to verify the UUID. If they do not match
1517 * we need to use a new callback connection to verify the
1518 * UUID of the incoming caller and perhaps use the old
1519 * callback connection to verify that the old address/port
1523 cb_conn = host->callback_rxcon;
1524 rx_GetConnection(cb_conn);
1526 if (haddr == host->host && hport == host->port) {
1527 /* The existing callback connection matches the
1528 * incoming connection so just use it.
1531 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1532 if (code == RXGEN_OPCODE)
1533 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1535 /* We do not have a match. Create a new connection
1536 * for the new addr/port and use multi_Rx to probe
1537 * both of them simultaneously.
1540 sc = rxnull_NewClientSecurityObject();
1541 cb_in = rx_NewConnection(haddr, hport, 1, sc, 0);
1542 rx_SetConnDeadTime(cb_in, 50);
1543 rx_SetConnHardDeadTime(cb_in, AFS_HARDDEADTIME);
1546 RXAFSCB_TellMeAboutYourself(cb_in, &interf, &caps);
1547 if (code == RXGEN_OPCODE)
1548 code = RXAFSCB_WhoAreYou(cb_in, &interf);
1550 rx_PutConnection(cb_conn);
1553 if ((code == RXGEN_OPCODE) ||
1554 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1555 identP = (struct Identity *)malloc(sizeof(struct Identity));
1557 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1561 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1562 if (cb_in == NULL) {
1563 /* The host on this connection was unable to respond to
1564 * the WhoAreYou. We will treat this as a new connection
1565 * from the existing host. The worst that can happen is
1566 * that we maintain some extra callback state information */
1567 if (host->interface) {
1569 ("Host %" AFS_PTR_FMT " (%s:%d) used to support WhoAreYou, deleting.\n",
1571 afs_inet_ntoa_r(host->host, hoststr),
1572 ntohs(host->port)));
1573 host->hostFlags |= HOSTDELETED;
1574 host->hostFlags &= ~HWHO_INPROGRESS;
1581 /* The incoming connection does not support WhoAreYou but
1582 * the original one might have. Use removeAddress_r() to
1583 * remove this addr/port from the host that was found.
1584 * If there are no more addresses left for the host it
1585 * will be deleted. Then we retry.
1587 removeAddress_r(host, haddr, hport);
1588 host->hostFlags &= ~HWHO_INPROGRESS;
1589 host->hostFlags |= ALTADDR;
1595 } else if (code == 0) {
1597 identP = (struct Identity *)malloc(sizeof(struct Identity));
1599 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1603 identP->uuid = interf.uuid;
1604 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1605 /* Check whether the UUID on this connection matches
1606 * the UUID in the host structure. If they don't match
1607 * then this is not the same host as before. */
1608 if (!host->interface
1609 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid)) {
1612 ("Uuid doesn't match connection (%s:%d).\n",
1613 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport)));
1614 removeAddress_r(host, haddr, hport);
1617 ("Uuid doesn't match host %" AFS_PTR_FMT " (%s:%d).\n",
1618 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1620 removeAddress_r(host, host->host, host->port);
1622 host->hostFlags &= ~HWHO_INPROGRESS;
1623 host->hostFlags |= ALTADDR;
1629 /* the UUID matched the client at the incoming addr/port
1630 * but this is not the address of the active callback
1631 * connection. Try that connection and see if the client
1632 * is still there and if the reported UUID is the same.
1635 afsUUID uuid = host->interface->uuid;
1636 cb_conn = host->callback_rxcon;
1637 rx_GetConnection(cb_conn);
1638 rx_SetConnDeadTime(cb_conn, 2);
1639 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1641 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1643 rx_SetConnDeadTime(cb_conn, 50);
1644 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1645 rx_PutConnection(cb_conn);
1648 /* The primary address is either not responding or
1649 * is not the client we are looking for. Need to
1650 * remove the primary address and add swap in the new
1651 * callback connection, and destroy the old one.
1653 struct rx_connection *rxconn;
1654 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
1656 afs_inet_ntoa_r(host->host, hoststr),
1657 ntohs(host->port),code2));
1660 * make sure we add and then remove. otherwise, we
1661 * might end up with no valid interfaces after the
1662 * remove and the host will have been marked deleted.
1664 addInterfaceAddr_r(host, haddr, hport);
1665 removeInterfaceAddr_r(host, host->host, host->port);
1668 rxconn = host->callback_rxcon;
1669 host->callback_rxcon = cb_in;
1674 * If rx_DestroyConnection calls h_FreeConnection we
1675 * will deadlock on the host_glock_mutex. Work around
1676 * the problem by unhooking the client from the
1677 * connection before destroying the connection.
1679 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
1680 rx_DestroyConnection(rxconn);
1686 /* A callback to the incoming connection address is failing.
1687 * Assume that the addr/port is no longer associated with the host
1688 * returned by h_Lookup_r.
1691 ("CB: WhoAreYou failed for connection (%s:%d) , error %d\n",
1692 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport), code));
1693 removeAddress_r(host, haddr, hport);
1694 host->hostFlags &= ~HWHO_INPROGRESS;
1695 host->hostFlags |= ALTADDR;
1699 rx_DestroyConnection(cb_in);
1704 ("CB: WhoAreYou failed for host %" AFS_PTR_FMT " (%s:%d), error %d\n",
1705 host, afs_inet_ntoa_r(host->host, hoststr),
1706 ntohs(host->port), code));
1707 host->hostFlags |= VENUSDOWN;
1710 if (caps.Capabilities_val
1711 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1712 host->hostFlags |= HERRORTRANS;
1714 host->hostFlags &= ~(HERRORTRANS);
1715 host->hostFlags |= ALTADDR;
1716 host->hostFlags &= ~HWHO_INPROGRESS;
1719 if (!(host->hostFlags & ALTADDR)) {
1720 /* another thread is doing the initialisation */
1722 ("Host %" AFS_PTR_FMT " (%s:%d) waiting for host-init to complete\n",
1723 host, afs_inet_ntoa_r(host->host, hoststr),
1724 ntohs(host->port)));
1728 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1729 host, afs_inet_ntoa_r(host->host, hoststr),
1730 ntohs(host->port)));
1734 /* We need to check whether the identity in the host structure
1735 * matches the identity on the connection. If they don't match
1736 * then treat this a new host. */
1737 if (!(host->Console & 1)
1738 && ((!identP->valid && host->interface)
1739 || (identP->valid && !host->interface)
1741 && !afs_uuid_equal(&identP->uuid,
1742 &host->interface->uuid)))) {
1743 char uuid1[128], uuid2[128];
1745 afsUUID_to_string(&identP->uuid, uuid1, 127);
1746 if (host->interface)
1747 afsUUID_to_string(&host->interface->uuid, uuid2, 127);
1749 ("CB: new identity for host %p (%s:%d), "
1750 "deleting(%x %p %s %s)\n",
1751 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1752 identP->valid, host->interface,
1753 identP->valid ? uuid1 : "no_uuid",
1754 host->interface ? uuid2 : "no_uuid"));
1756 /* The host in the cache is not the host for this connection */
1758 host->hostFlags |= HOSTDELETED;
1764 host = h_Alloc_r(tcon); /* returned held and locked */
1765 h_gethostcps_r(host, FT_ApproxTime());
1766 if (!(host->Console & 1)) {
1768 cb_conn = host->callback_rxcon;
1769 rx_GetConnection(cb_conn);
1770 host->hostFlags |= HWHO_INPROGRESS;
1773 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1774 if (code == RXGEN_OPCODE)
1775 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1776 rx_PutConnection(cb_conn);
1779 if ((code == RXGEN_OPCODE) ||
1780 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1783 (struct Identity *)malloc(sizeof(struct Identity));
1788 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1793 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1795 ("Host %" AFS_PTR_FMT " (%s:%d) does not support WhoAreYou.\n",
1796 host, afs_inet_ntoa_r(host->host, hoststr),
1797 ntohs(host->port)));
1799 } else if (code == 0) {
1802 (struct Identity *)malloc(sizeof(struct Identity));
1807 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1812 identP->uuid = interf.uuid;
1814 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1816 ("WhoAreYou success on host %" AFS_PTR_FMT " (%s:%d)\n",
1817 host, afs_inet_ntoa_r(host->host, hoststr),
1818 ntohs(host->port)));
1820 if (code == 0 && !identP->valid) {
1821 cb_conn = host->callback_rxcon;
1822 rx_GetConnection(cb_conn);
1824 code = RXAFSCB_InitCallBackState(cb_conn);
1825 rx_PutConnection(cb_conn);
1828 } else if (code == 0) {
1829 oldHost = h_LookupUuid_r(&identP->uuid);
1834 if (oldHost->hostFlags & HOSTDELETED) {
1835 h_Unlock_r(oldHost);
1836 h_Release_r(oldHost);
1844 oldHost->hostFlags |= HWHO_INPROGRESS;
1846 if (oldHost->interface) {
1848 afsUUID uuid = oldHost->interface->uuid;
1849 cb_conn = oldHost->callback_rxcon;
1850 rx_GetConnection(cb_conn);
1851 rx_SetConnDeadTime(cb_conn, 2);
1852 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1854 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1856 rx_SetConnDeadTime(cb_conn, 50);
1857 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1858 rx_PutConnection(cb_conn);
1861 /* The primary address is either not responding or
1862 * is not the client we are looking for.
1863 * MultiProbeAlternateAddress_r() will remove the
1864 * alternate interfaces that do not have the same
1866 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
1868 afs_inet_ntoa_r(oldHost->host, hoststr),
1869 ntohs(oldHost->port),code2));
1870 MultiProbeAlternateAddress_r(oldHost);
1877 /* This is a new address for an existing host. Update
1878 * the list of interfaces for the existing host and
1879 * delete the host structure we just allocated. */
1881 /* prevent warnings while manipulating interface lists */
1882 host->hostFlags |= HOSTDELETED;
1884 if (oldHost->host != haddr || oldHost->port != hport) {
1885 struct rx_connection *rxconn;
1888 ("CB: Host %" AFS_PTR_FMT " (%s:%d) has new addr %s:%d\n",
1890 afs_inet_ntoa_r(oldHost->host, hoststr2),
1891 ntohs(oldHost->port),
1892 afs_inet_ntoa_r(haddr, hoststr),
1895 * add then remove. otherwise the host may get marked
1896 * deleted if we removed the only valid address.
1898 addInterfaceAddr_r(oldHost, haddr, hport);
1899 if (probefail || oldHost->host == haddr) {
1901 * The probe failed which means that the old
1902 * address is either unreachable or is not the
1903 * same host we were just contacted by. We will
1904 * also remove addresses if only the port has
1905 * changed because that indicates the client
1908 removeInterfaceAddr_r(oldHost, oldHost->host, oldHost->port);
1911 struct Interface *interface = oldHost->interface;
1912 int number = oldHost->interface->numberOfInterfaces;
1913 for (i = 0; i < number; i++) {
1914 if (interface->interface[i].addr == haddr &&
1915 interface->interface[i].port != hport) {
1917 * We have just been contacted by a client
1918 * that has been seen from behind a NAT
1919 * and at least one other address.
1921 removeInterfaceAddr_r(oldHost, haddr,
1922 interface->interface[i].port);
1927 h_AddHostToAddrHashTable_r(haddr, hport, oldHost);
1928 oldHost->host = haddr;
1929 oldHost->port = hport;
1930 rxconn = oldHost->callback_rxcon;
1931 oldHost->callback_rxcon = host->callback_rxcon;
1932 host->callback_rxcon = rxconn;
1934 /* don't destroy rxconn here; let h_TossStuff_r
1935 * take care of that via h_Release_r below */
1937 host->hostFlags &= ~HWHO_INPROGRESS;
1939 /* release host because it was allocated by h_Alloc_r */
1942 /* the new host is held and locked */
1944 /* This really is a new host */
1945 h_AddHostToUuidHashTable_r(&identP->uuid, host);
1946 cb_conn = host->callback_rxcon;
1947 rx_GetConnection(cb_conn);
1950 RXAFSCB_InitCallBackState3(cb_conn,
1952 rx_PutConnection(cb_conn);
1957 ("InitCallBackState3 success on host %" AFS_PTR_FMT " (%s:%d)\n",
1958 host, afs_inet_ntoa_r(host->host, hoststr),
1959 ntohs(host->port)));
1960 assert(interfValid == 1);
1961 initInterfaceAddr_r(host, &interf);
1967 ("CB: RCallBackConnectBack failed for %" AFS_PTR_FMT " (%s:%d)\n",
1968 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1969 host->hostFlags |= VENUSDOWN;
1972 ("CB: RCallBackConnectBack succeeded for %" AFS_PTR_FMT " (%s:%d)\n",
1973 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1974 host->hostFlags |= RESETDONE;
1977 if (caps.Capabilities_val
1978 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1979 host->hostFlags |= HERRORTRANS;
1981 host->hostFlags &= ~(HERRORTRANS);
1982 host->hostFlags |= ALTADDR; /* host structure initialization complete */
1983 host->hostFlags &= ~HWHO_INPROGRESS;
1988 if (caps.Capabilities_val)
1989 free(caps.Capabilities_val);
1990 caps.Capabilities_val = NULL;
1991 caps.Capabilities_len = 0;
1993 rx_DestroyConnection(cb_in);
2001 static char localcellname[PR_MAXNAMELEN + 1];
2002 char local_realms[AFS_NUM_LREALMS][AFS_REALM_SZ];
2003 int num_lrealms = -1;
2007 h_InitHostPackage(void)
2009 memset(&nulluuid, 0, sizeof(afsUUID));
2010 afsconf_GetLocalCell(confDir, localcellname, PR_MAXNAMELEN);
2011 if (num_lrealms == -1) {
2013 for (i=0; i<AFS_NUM_LREALMS; i++) {
2014 if (afs_krb_get_lrealm(local_realms[i], i) != 0 /*KSUCCESS*/)
2020 ("afs_krb_get_lrealm failed, using %s.\n",
2022 strncpy(local_realms[0], localcellname, AFS_REALM_SZ);
2028 /* initialize the rest of the local realms to nullstring for debugging */
2029 for (; i<AFS_NUM_LREALMS; i++)
2030 local_realms[i][0] = '\0';
2032 rxcon_ident_key = rx_KeyCreate((rx_destructor_t) free);
2033 rxcon_client_key = rx_KeyCreate((rx_destructor_t) 0);
2034 #ifdef AFS_PTHREAD_ENV
2035 assert(pthread_mutex_init(&host_glock_mutex, NULL) == 0);
2036 #endif /* AFS_PTHREAD_ENV */
2040 MapName_r(char *aname, char *acell, afs_int32 * aval)
2045 afs_int32 anamelen, cnamelen;
2049 anamelen = strlen(aname);
2050 if (anamelen >= PR_MAXNAMELEN)
2051 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
2053 lnames.namelist_len = 1;
2054 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
2055 lids.idlist_len = 0;
2056 lids.idlist_val = NULL;
2058 cnamelen = strlen(acell);
2060 if (afs_is_foreign_ticket_name(aname, NULL, acell, localcellname)) {
2062 ("MapName: cell is foreign. cell=%s, localcell=%s, localrealms={%s,%s,%s,%s}\n",
2063 acell, localcellname, local_realms[0],local_realms[1],local_realms[2],local_realms[3]));
2064 if ((anamelen + cnamelen + 1) >= PR_MAXNAMELEN) {
2066 ("MapName: Name too long, using AnonymousID for %s@%s\n",
2068 *aval = AnonymousID;
2071 foreign = 1; /* attempt cross-cell authentication */
2072 tname = (char *)malloc(PR_MAXNAMELEN);
2074 ViceLog(0, ("Failed malloc in MapName_r\n"));
2077 strcpy(tname, aname);
2078 tname[anamelen] = '@';
2079 strcpy(tname + anamelen + 1, acell);
2080 lnames.namelist_val = (prname *) tname;
2085 code = hpr_NameToId(&lnames, &lids);
2088 if (lids.idlist_val) {
2089 *aval = lids.idlist_val[0];
2090 if (*aval == AnonymousID) {
2092 ("MapName: NameToId on %s returns anonymousID\n",
2093 lnames.namelist_val[0]));
2095 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
2098 ("MapName: NameToId on '%s' is unknown\n",
2099 lnames.namelist_val[0]));
2105 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
2113 /* NOTE: this returns the client with a Write lock and a refCount */
2115 h_ID2Client(afs_int32 vid)
2117 register struct client *client;
2118 register struct host *host;
2122 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
2123 if (host->hostFlags & HOSTDELETED)
2125 for (client = host->FirstClient; client; client = client->next) {
2126 if (!client->deleted && client->ViceId == vid) {
2129 ObtainWriteLock(&client->lock);
2134 if (count != hostCount) {
2135 ViceLog(0, ("h_ID2Client found %d of %d hosts\n", count, hostCount));
2136 } else if (host != NULL) {
2137 ViceLog(0, ("h_ID2Client found more than %d hosts\n", hostCount));
2138 ShutDownAndCore(PANIC);
2146 * Called by the server main loop. Returns a h_Held client, which must be
2147 * released later the main loop. Allocates a client if the matching one
2148 * isn't around. The client is returned with its reference count incremented
2149 * by one. The caller must call h_ReleaseClient_r when finished with
2152 * The refCount on client->host is returned incremented. h_ReleaseClient_r
2153 * does not decrement the refCount on client->host.
2156 h_FindClient_r(struct rx_connection *tcon)
2158 register struct client *client;
2159 struct host *host = NULL;
2160 struct client *oldClient;
2161 afs_int32 viceid = 0;
2165 #if (64-MAXKTCNAMELEN)
2166 ticket name length != 64
2170 char uname[PR_MAXNAMELEN];
2171 char tcell[MAXKTCREALMLEN];
2175 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2176 if (client && client->sid == rxr_CidOf(tcon)
2177 && client->VenusEpoch == rxr_GetEpoch(tcon)) {
2179 h_Hold_r(client->host);
2180 if (!client->deleted && client->prfail != 2) {
2181 /* Could add shared lock on client here */
2182 /* note that we don't have to lock entry in this path to
2183 * ensure CPS is initialized, since we don't call rx_SetSpecific
2184 * until initialization is done, and we only get here if
2185 * rx_GetSpecific located the client structure.
2190 ObtainWriteLock(&client->lock); /* released at end */
2196 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
2198 ("FindClient: authenticating connection: authClass=%d\n",
2200 if (authClass == 1) {
2201 /* A bcrypt tickets, no longer supported */
2202 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
2203 viceid = AnonymousID;
2204 expTime = 0x7fffffff;
2205 } else if (authClass == 2) {
2208 /* kerberos ticket */
2209 code = rxkad_GetServerInfo(tcon, /*level */ 0, (afs_uint32 *)&expTime,
2210 tname, tinst, tcell, &kvno);
2212 ViceLog(1, ("Failed to get rxkad ticket info\n"));
2213 viceid = AnonymousID;
2214 expTime = 0x7fffffff;
2216 int ilen = strlen(tinst);
2218 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
2219 tname, tinst, tcell, expTime, kvno));
2220 strncpy(uname, tname, sizeof(uname));
2222 if (strlen(uname) + 1 + ilen >= sizeof(uname))
2225 strcat(uname, tinst);
2227 /* translate the name to a vice id */
2228 code = MapName_r(uname, tcell, &viceid);
2232 ("failed to map name=%s, cell=%s -> code=%d\n", uname,
2235 viceid = AnonymousID;
2236 expTime = 0x7fffffff;
2240 viceid = AnonymousID; /* unknown security class */
2241 expTime = 0x7fffffff;
2244 if (!client) { /* loop */
2245 host = h_GetHost_r(tcon); /* Returns with incremented refCount */
2251 /* First try to find the client structure */
2252 for (client = host->FirstClient; client; client = client->next) {
2253 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2254 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2257 ObtainWriteLock(&client->lock);
2263 /* Still no client structure - get one */
2266 if (host->hostFlags & HOSTDELETED) {
2271 /* Retry to find the client structure */
2272 for (client = host->FirstClient; client; client = client->next) {
2273 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2274 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2276 goto retryfirstclient;
2281 ObtainWriteLock(&client->lock);
2282 client->refCount = 1;
2283 client->host = host;
2284 #if FS_STATS_DETAILED
2285 client->InSameNetwork = host->InSameNetwork;
2286 #endif /* FS_STATS_DETAILED */
2287 client->ViceId = viceid;
2288 client->expTime = expTime; /* rx only */
2289 client->authClass = authClass; /* rx only */
2290 client->sid = rxr_CidOf(tcon);
2291 client->VenusEpoch = rxr_GetEpoch(tcon);
2292 client->CPS.prlist_val = NULL;
2293 client->CPS.prlist_len = 0;
2297 client->prfail = fail;
2299 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
2300 client->CPS.prlist_len = 0;
2301 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID))
2302 free(client->CPS.prlist_val);
2303 client->CPS.prlist_val = NULL;
2304 client->ViceId = viceid;
2305 client->expTime = expTime;
2307 if (viceid == ANONYMOUSID) {
2308 client->CPS.prlist_len = AnonCPS.prlist_len;
2309 client->CPS.prlist_val = AnonCPS.prlist_val;
2312 code = hpr_GetCPS(viceid, &client->CPS);
2317 ("pr_GetCPS failed(%d) for user %d, host %" AFS_PTR_FMT " (%s:%d)\n",
2318 code, viceid, client->host,
2319 afs_inet_ntoa_r(client->host->host,hoststr),
2320 ntohs(client->host->port)));
2322 /* Although ubik_Call (called by pr_GetCPS) traverses thru
2323 * all protection servers and reevaluates things if no
2324 * sync server or quorum is found we could still end up
2325 * with one of these errors. In such case we would like to
2326 * reevaluate the rpc call to find if there's cps for this
2327 * guy. We treat other errors (except network failures
2328 * ones - i.e. code < 0) as an indication that there is no
2329 * CPS for this host. Ideally we could like to deal this
2330 * problem the other way around (i.e. if code == NOCPS
2331 * ignore else retry next time) but the problem is that
2332 * there're other errors (i.e. EPERM) for which we don't
2333 * want to retry and we don't know the whole code list!
2335 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
2339 /* the disabling of system:administrators is so iffy and has so many
2340 * possible failure modes that we will disable it again */
2341 /* Turn off System:Administrator for safety
2342 * if (AL_IsAMember(SystemId, client->CPS) == 0)
2343 * assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
2346 /* Now, tcon may already be set to a rock, since we blocked with no host
2347 * or client locks set above in pr_GetCPS (XXXX some locking is probably
2348 * required). So, before setting the RPC's rock, we should disconnect
2349 * the RPC from the other client structure's rock.
2351 oldClient = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2352 if (oldClient && oldClient != client && oldClient->sid == rxr_CidOf(tcon)
2353 && oldClient->VenusEpoch == rxr_GetEpoch(tcon)) {
2355 if (!oldClient->deleted) {
2356 /* if we didn't create it, it's not ours to put back */
2358 ViceLog(0, ("FindClient: stillborn client %p(%x); "
2359 "conn %p (host %s:%d) had client %p(%x)\n",
2360 client, client->sid, tcon,
2361 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2362 ntohs(rxr_PortOf(tcon)),
2363 oldClient, oldClient->sid));
2364 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2365 free(client->CPS.prlist_val);
2366 client->CPS.prlist_val = NULL;
2367 client->CPS.prlist_len = 0;
2369 /* We should perhaps check for 0 here */
2371 ReleaseWriteLock(&client->lock);
2376 oldClient->refCount++;
2378 ObtainWriteLock(&oldClient->lock);
2382 ViceLog(0, ("FindClient: deleted client %p(%x) already had "
2383 "conn %p (host %s:%d), stolen by client %p(%x)\n",
2384 oldClient, oldClient->sid, tcon,
2385 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2386 ntohs(rxr_PortOf(tcon)),
2387 client, client->sid));
2388 /* rx_SetSpecific will be done immediately below */
2391 /* Avoid chaining in more than once. */
2395 if (host->hostFlags & HOSTDELETED) {
2400 client->host = NULL;
2402 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2403 free(client->CPS.prlist_val);
2404 client->CPS.prlist_val = NULL;
2405 client->CPS.prlist_len = 0;
2408 ReleaseWriteLock(&client->lock);
2413 client->next = host->FirstClient;
2414 host->FirstClient = client;
2416 CurrentConnections++; /* increment number of connections */
2418 rx_SetSpecific(tcon, rxcon_client_key, client);
2419 ReleaseWriteLock(&client->lock);
2423 } /*h_FindClient_r */
2426 h_ReleaseClient_r(struct client *client)
2428 assert(client->refCount > 0);
2435 * Sigh: this one is used to get the client AGAIN within the individual
2436 * server routines. This does not bother h_Holding the host, since
2437 * this is assumed already have been done by the server main loop.
2438 * It does check tokens, since only the server routines can return the
2439 * VICETOKENDEAD error code
2442 GetClient(struct rx_connection *tcon, struct client **cp)
2444 register struct client *client;
2449 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2450 if (client == NULL) {
2452 ("GetClient: no client in conn %p (host %s:%d), VBUSYING\n",
2453 tcon, afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2454 ntohs(rxr_PortOf(tcon))));
2458 if (rxr_CidOf(tcon) != client->sid || rxr_GetEpoch(tcon) != client->VenusEpoch) {
2460 ("GetClient: tcon %p tcon sid %d client sid %d\n",
2461 tcon, rxr_CidOf(tcon), client->sid));
2465 if (client && client->LastCall > client->expTime && client->expTime) {
2467 ("Token for %s at %s:%d expired %d\n", h_UserName(client),
2468 afs_inet_ntoa_r(client->host->host, hoststr),
2469 ntohs(client->host->port), client->expTime));
2471 return VICETOKENDEAD;
2481 PutClient(struct client **cp)
2487 h_ReleaseClient_r(*cp);
2494 /* Client user name for short term use. Note that this is NOT inexpensive */
2496 h_UserName(struct client *client)
2498 static char User[PR_MAXNAMELEN + 1];
2502 lids.idlist_len = 1;
2503 lids.idlist_val = (afs_int32 *) malloc(1 * sizeof(afs_int32));
2504 if (!lids.idlist_val) {
2505 ViceLog(0, ("Failed malloc in h_UserName\n"));
2508 lnames.namelist_len = 0;
2509 lnames.namelist_val = (prname *) 0;
2510 lids.idlist_val[0] = client->ViceId;
2511 if (hpr_IdToName(&lids, &lnames)) {
2512 /* We need to free id we alloced above! */
2513 free(lids.idlist_val);
2514 return "*UNKNOWN USER NAME*";
2516 strncpy(User, lnames.namelist_val[0], PR_MAXNAMELEN);
2517 free(lids.idlist_val);
2518 free(lnames.namelist_val);
2527 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
2528 CEs, CEBlocks, HTs, HTBlocks));
2534 h_PrintClient(register struct host *host, int flags, void *rock)
2536 StreamHandle_t *file = (StreamHandle_t *)rock;
2537 register struct client *client;
2542 time_t LastCall, expTime;
2545 LastCall = host->LastCall;
2546 if (host->hostFlags & HOSTDELETED) {
2550 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2551 "Host %s:%d down = %d, LastCall %s",
2552 afs_inet_ntoa_r(host->host, hoststr),
2553 ntohs(host->port), (host->hostFlags & VENUSDOWN),
2554 afs_ctime(&LastCall, tbuffer,
2556 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2557 for (client = host->FirstClient; client; client = client->next) {
2558 if (!client->deleted) {
2559 expTime = client->expTime;
2560 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2561 " user id=%d, name=%s, sl=%s till %s",
2562 client->ViceId, h_UserName(client),
2564 authClass ? "Authenticated" :
2565 "Not authenticated",
2567 authClass ? afs_ctime(&expTime, tbuffer,
2570 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2571 (void)afs_snprintf(tmpStr, sizeof tmpStr, " CPS-%d is [",
2572 client->CPS.prlist_len);
2573 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2574 if (client->CPS.prlist_val) {
2575 for (i = 0; i > client->CPS.prlist_len; i++) {
2576 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
2577 client->CPS.prlist_val[i]);
2578 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2581 sprintf(tmpStr, "]\n");
2582 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2588 } /*h_PrintClient */
2593 * Print a list of clients, with last security level and token value seen,
2597 h_PrintClients(void)
2603 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
2607 ("Couldn't create client dump file %s\n",
2608 AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2611 now = FT_ApproxTime();
2612 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active users at %s\n",
2613 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
2614 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2615 h_Enumerate(h_PrintClient, (char *)file);
2616 STREAM_REALLYCLOSE(file);
2617 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2624 h_DumpHost(register struct host *host, int flags, void *rock)
2626 StreamHandle_t *file = (StreamHandle_t *)rock;
2633 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2634 "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 [",
2635 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port), host->index,
2636 host->cblist, CheckLock(&host->lock), host->LastCall,
2637 host->ActiveCall, (host->hostFlags & VENUSDOWN),
2638 host->hostFlags & HOSTDELETED, host->Console,
2639 host->hostFlags & CLIENTDELETED, host->hcpsfailed,
2641 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2642 if (host->hcps.prlist_val)
2643 for (i = 0; i < host->hcps.prlist_len; i++) {
2644 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
2645 host->hcps.prlist_val[i]);
2646 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2648 sprintf(tmpStr, "] [");
2649 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2650 if (host->interface)
2651 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
2653 sprintf(tmpStr, " %s:%d",
2654 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
2655 ntohs(host->interface->interface[i].port));
2656 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2658 sprintf(tmpStr, "] refCount:%d hostFlags:%hu\n", host->refCount, host->hostFlags);
2659 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2671 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
2677 ("Couldn't create host dump file %s\n",
2678 AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2681 now = FT_ApproxTime();
2682 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active hosts at %s\n",
2683 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
2684 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2685 h_Enumerate(h_DumpHost, (char *)file);
2686 STREAM_REALLYCLOSE(file);
2687 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2691 #ifdef AFS_DEMAND_ATTACH_FS
2694 * host state serialization
2696 static int h_stateFillHeader(struct host_state_header * hdr);
2697 static int h_stateCheckHeader(struct host_state_header * hdr);
2698 static int h_stateAllocMap(struct fs_dump_state * state);
2699 static int h_stateSaveHost(struct host * host, int flags, void *rock);
2700 static int h_stateRestoreHost(struct fs_dump_state * state);
2701 static int h_stateRestoreIndex(struct host * h, int flags, void *rock);
2702 static int h_stateVerifyHost(struct host * h, int flags, void *rock);
2703 static int h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h, afs_uint32 addr, afs_uint16 port);
2704 static int h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h);
2705 static void h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out);
2706 static void h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out);
2709 /* this procedure saves all host state to disk for fast startup */
2711 h_stateSave(struct fs_dump_state * state)
2713 AssignInt64(state->eof_offset, &state->hdr->h_offset);
2716 ViceLog(0, ("h_stateSave: hostCount=%d\n", hostCount));
2718 /* invalidate host state header */
2719 memset(state->h_hdr, 0, sizeof(struct host_state_header));
2721 if (fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2722 sizeof(struct host_state_header))) {
2727 fs_stateIncEOF(state, sizeof(struct host_state_header));
2729 h_Enumerate_r(h_stateSaveHost, hostList, (char *)state);
2734 h_stateFillHeader(state->h_hdr);
2736 /* write the real header to disk */
2737 state->bail = fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2738 sizeof(struct host_state_header));
2745 * host state serialization
2747 * this procedure restores all host state from a disk for fast startup
2750 h_stateRestore(struct fs_dump_state * state)
2754 /* seek to the right position and read in the host state header */
2755 if (fs_stateReadHeader(state, &state->hdr->h_offset, state->h_hdr,
2756 sizeof(struct host_state_header))) {
2761 /* check the validity of the header */
2762 if (h_stateCheckHeader(state->h_hdr)) {
2767 records = state->h_hdr->records;
2769 if (h_stateAllocMap(state)) {
2774 /* iterate over records restoring host state */
2775 for (i=0; i < records; i++) {
2776 if (h_stateRestoreHost(state) != 0) {
2787 h_stateRestoreIndices(struct fs_dump_state * state)
2789 h_Enumerate_r(h_stateRestoreIndex, hostList, (char *)state);
2794 h_stateRestoreIndex(struct host * h, int flags, void *rock)
2796 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2797 if (cb_OldToNew(state, h->cblist, &h->cblist)) {
2798 return H_ENUMERATE_BAIL(flags);
2804 h_stateVerify(struct fs_dump_state * state)
2806 h_Enumerate_r(h_stateVerifyHost, hostList, (char *)state);
2811 h_stateVerifyHost(struct host * h, int flags, void* rock)
2813 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2817 ViceLog(0, ("h_stateVerifyHost: error: NULL host pointer in linked list\n"));
2818 return H_ENUMERATE_BAIL(flags);
2822 for (i = h->interface->numberOfInterfaces-1; i >= 0; i--) {
2823 if (h_stateVerifyAddrHash(state, h, h->interface->interface[i].addr,
2824 h->interface->interface[i].port)) {
2828 if (h_stateVerifyUuidHash(state, h)) {
2831 } else if (h_stateVerifyAddrHash(state, h, h->host, h->port)) {
2835 if (cb_stateVerifyHCBList(state, h)) {
2843 h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h, afs_uint32 addr, afs_uint16 port)
2845 int ret = 0, found = 0;
2846 struct host *host = NULL;
2847 struct h_AddrHashChain *chain;
2848 int index = h_HashIndex(addr);
2852 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
2853 host = chain->hostPtr;
2855 afs_inet_ntoa_r(addr, tmp);
2856 ViceLog(0, ("h_stateVerifyAddrHash: error: addr hash chain has NULL host ptr (lookup addr %s)\n", tmp));
2860 if ((chain->addr == addr) && (chain->port == port)) {
2862 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr hash entry points to different host struct (%d, %d)\n",
2863 h->index, host->index));
2864 state->flags.warnings_generated = 1;
2869 if (chain_len > FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN) {
2870 ViceLog(0, ("h_stateVerifyAddrHash: error: hash chain length exceeds %d; assuming there's a loop\n",
2871 FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN));
2879 afs_inet_ntoa_r(addr, tmp);
2880 if (state->mode == FS_STATE_LOAD_MODE) {
2881 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s not found in hash\n", tmp));
2885 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr %s not found in hash\n", tmp));
2886 state->flags.warnings_generated = 1;
2895 h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h)
2897 int ret = 0, found = 0;
2898 struct host *host = NULL;
2899 struct h_UuidHashChain *chain;
2900 afsUUID * uuidp = &h->interface->uuid;
2901 int index = h_UuidHashIndex(uuidp);
2905 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
2906 host = chain->hostPtr;
2908 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
2909 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid hash chain has NULL host ptr (lookup uuid %s)\n", tmp));
2913 if (host->interface &&
2914 afs_uuid_equal(&host->interface->uuid, uuidp)) {
2916 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid hash entry points to different host struct (%d, %d)\n",
2917 h->index, host->index));
2918 state->flags.warnings_generated = 1;
2923 if (chain_len > FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN) {
2924 ViceLog(0, ("h_stateVerifyUuidHash: error: hash chain length exceeds %d; assuming there's a loop\n",
2925 FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN));
2933 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
2934 if (state->mode == FS_STATE_LOAD_MODE) {
2935 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid %s not found in hash\n", tmp));
2939 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid %s not found in hash\n", tmp));
2940 state->flags.warnings_generated = 1;
2948 /* create the host state header structure */
2950 h_stateFillHeader(struct host_state_header * hdr)
2952 hdr->stamp.magic = HOST_STATE_MAGIC;
2953 hdr->stamp.version = HOST_STATE_VERSION;
2957 /* check the contents of the host state header structure */
2959 h_stateCheckHeader(struct host_state_header * hdr)
2963 if (hdr->stamp.magic != HOST_STATE_MAGIC) {
2964 ViceLog(0, ("check_host_state_header: invalid state header\n"));
2967 else if (hdr->stamp.version != HOST_STATE_VERSION) {
2968 ViceLog(0, ("check_host_state_header: unknown version number\n"));
2974 /* allocate the host id mapping table */
2976 h_stateAllocMap(struct fs_dump_state * state)
2978 state->h_map.len = state->h_hdr->index_max + 1;
2979 state->h_map.entries = (struct idx_map_entry_t *)
2980 calloc(state->h_map.len, sizeof(struct idx_map_entry_t));
2981 return (state->h_map.entries != NULL) ? 0 : 1;
2984 /* function called by h_Enumerate to save a host to disk */
2986 h_stateSaveHost(struct host * host, int flags, void* rock)
2988 struct fs_dump_state *state = (struct fs_dump_state *) rock;
2989 int if_len=0, hcps_len=0;
2990 struct hostDiskEntry hdsk;
2991 struct host_state_entry_header hdr;
2992 struct Interface * ifp = NULL;
2993 afs_int32 * hcps = NULL;
2994 struct iovec iov[4];
2997 memset(&hdr, 0, sizeof(hdr));
2999 if (state->h_hdr->index_max < host->index) {
3000 state->h_hdr->index_max = host->index;
3003 h_hostToDiskEntry_r(host, &hdsk);
3004 if (host->interface) {
3005 if_len = sizeof(struct Interface) +
3006 ((host->interface->numberOfInterfaces-1) * sizeof(struct AddrPort));
3007 ifp = (struct Interface *) malloc(if_len);
3008 assert(ifp != NULL);
3009 memcpy(ifp, host->interface, if_len);
3010 hdr.interfaces = host->interface->numberOfInterfaces;
3011 iov[iovcnt].iov_base = (char *) ifp;
3012 iov[iovcnt].iov_len = if_len;
3015 if (host->hcps.prlist_val) {
3016 hdr.hcps = host->hcps.prlist_len;
3017 hcps_len = hdr.hcps * sizeof(afs_int32);
3018 hcps = (afs_int32 *) malloc(hcps_len);
3019 assert(hcps != NULL);
3020 memcpy(hcps, host->hcps.prlist_val, hcps_len);
3021 iov[iovcnt].iov_base = (char *) hcps;
3022 iov[iovcnt].iov_len = hcps_len;
3026 if (hdsk.index > state->h_hdr->index_max)
3027 state->h_hdr->index_max = hdsk.index;
3029 hdr.len = sizeof(struct host_state_entry_header) +
3030 sizeof(struct hostDiskEntry) + if_len + hcps_len;
3031 hdr.magic = HOST_STATE_ENTRY_MAGIC;
3033 iov[0].iov_base = (char *) &hdr;
3034 iov[0].iov_len = sizeof(hdr);
3035 iov[1].iov_base = (char *) &hdsk;
3036 iov[1].iov_len = sizeof(struct hostDiskEntry);
3038 if (fs_stateWriteV(state, iov, iovcnt)) {
3039 ViceLog(0, ("h_stateSaveHost: failed to save host %d", host->index));
3043 fs_stateIncEOF(state, hdr.len);
3045 state->h_hdr->records++;
3052 return H_ENUMERATE_BAIL(flags);
3057 /* restores a host from disk */
3059 h_stateRestoreHost(struct fs_dump_state * state)
3061 int ifp_len=0, hcps_len=0, bail=0;
3062 struct host_state_entry_header hdr;
3063 struct hostDiskEntry hdsk;
3064 struct host *host = NULL;
3065 struct Interface *ifp = NULL;
3066 afs_int32 * hcps = NULL;
3067 struct iovec iov[3];
3070 if (fs_stateRead(state, &hdr, sizeof(hdr))) {
3071 ViceLog(0, ("h_stateRestoreHost: failed to read host entry header from dump file '%s'\n",
3077 if (hdr.magic != HOST_STATE_ENTRY_MAGIC) {
3078 ViceLog(0, ("h_stateRestoreHost: fileserver state dump file '%s' is corrupt.\n",
3084 iov[0].iov_base = (char *) &hdsk;
3085 iov[0].iov_len = sizeof(struct hostDiskEntry);
3087 if (hdr.interfaces) {
3088 ifp_len = sizeof(struct Interface) +
3089 ((hdr.interfaces-1) * sizeof(struct AddrPort));
3090 ifp = (struct Interface *) malloc(ifp_len);
3091 assert(ifp != NULL);
3092 iov[iovcnt].iov_base = (char *) ifp;
3093 iov[iovcnt].iov_len = ifp_len;
3097 hcps_len = hdr.hcps * sizeof(afs_int32);
3098 hcps = (afs_int32 *) malloc(hcps_len);
3099 assert(hcps != NULL);
3100 iov[iovcnt].iov_base = (char *) hcps;
3101 iov[iovcnt].iov_len = hcps_len;
3105 if ((ifp_len + hcps_len + sizeof(hdsk) + sizeof(hdr)) != hdr.len) {
3106 ViceLog(0, ("h_stateRestoreHost: host entry header length fields are inconsistent\n"));
3111 if (fs_stateReadV(state, iov, iovcnt)) {
3112 ViceLog(0, ("h_stateRestoreHost: failed to read host entry\n"));
3117 if (!hdr.hcps && hdsk.hcps_valid) {
3118 /* valid, zero-length host cps ; does this ever happen? */
3119 hcps = (afs_int32 *) malloc(sizeof(afs_int32));
3120 assert(hcps != NULL);
3124 assert(host != NULL);
3127 host->interface = ifp;
3130 host->hcps.prlist_val = hcps;
3131 host->hcps.prlist_len = hdr.hcps;
3134 h_diskEntryToHost_r(&hdsk, host);
3135 h_SetupCallbackConn_r(host);
3137 h_AddHostToAddrHashTable_r(host->host, host->port, host);
3140 for (i = ifp->numberOfInterfaces-1; i >= 0; i--) {
3141 if (ifp->interface[i].valid &&
3142 !(ifp->interface[i].addr == host->host &&
3143 ifp->interface[i].port == host->port)) {
3144 h_AddHostToAddrHashTable_r(ifp->interface[i].addr,
3145 ifp->interface[i].port,
3149 h_AddHostToUuidHashTable_r(&ifp->uuid, host);
3151 h_InsertList_r(host);
3153 /* setup host id map entry */
3154 state->h_map.entries[hdsk.index].old_idx = hdsk.index;
3155 state->h_map.entries[hdsk.index].new_idx = host->index;
3167 /* serialize a host structure to disk */
3169 h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out)
3171 out->host = in->host;
3172 out->port = in->port;
3173 out->hostFlags = in->hostFlags;
3174 out->Console = in->Console;
3175 out->hcpsfailed = in->hcpsfailed;
3176 out->LastCall = in->LastCall;
3177 out->ActiveCall = in->ActiveCall;
3178 out->cpsCall = in->cpsCall;
3179 out->cblist = in->cblist;
3180 #ifdef FS_STATS_DETAILED
3181 out->InSameNetwork = in->InSameNetwork;
3184 /* special fields we save, but are not memcpy'd back on restore */
3185 out->index = in->index;
3186 out->hcps_len = in->hcps.prlist_len;
3187 out->hcps_valid = (in->hcps.prlist_val == NULL) ? 0 : 1;
3190 /* restore a host structure from disk */
3192 h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out)
3194 out->host = in->host;
3195 out->port = in->port;
3196 out->hostFlags = in->hostFlags;
3197 out->Console = in->Console;
3198 out->hcpsfailed = in->hcpsfailed;
3199 out->LastCall = in->LastCall;
3200 out->ActiveCall = in->ActiveCall;
3201 out->cpsCall = in->cpsCall;
3202 out->cblist = in->cblist;
3203 #ifdef FS_STATS_DETAILED
3204 out->InSameNetwork = in->InSameNetwork;
3208 /* index translation routines */
3210 h_OldToNew(struct fs_dump_state * state, afs_uint32 old, afs_uint32 * new)
3214 /* hosts use a zero-based index, so old==0 is valid */
3216 if (old >= state->h_map.len) {
3217 ViceLog(0, ("h_OldToNew: index %d is out of range\n", old));
3219 } else if (state->h_map.entries[old].old_idx != old) { /* sanity check */
3220 ViceLog(0, ("h_OldToNew: index %d points to an invalid host record\n", old));
3223 *new = state->h_map.entries[old].new_idx;
3228 #endif /* AFS_DEMAND_ATTACH_FS */
3232 * This counts the number of workstations, the number of active workstations,
3233 * and the number of workstations declared "down" (i.e. not heard from
3234 * recently). An active workstation has received a call since the cutoff
3235 * time argument passed.
3238 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
3240 register struct host *host;
3241 register int num = 0, active = 0, del = 0;
3245 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
3246 if (!(host->hostFlags & HOSTDELETED)) {
3248 if (host->ActiveCall > cutofftime)
3250 if (host->hostFlags & VENUSDOWN)
3254 if (count != hostCount) {
3255 ViceLog(0, ("h_GetWorkStats found %d of %d hosts\n", count, hostCount));
3256 } else if (host != NULL) {
3257 ViceLog(0, ("h_GetWorkStats found more than %d hosts\n", hostCount));
3258 ShutDownAndCore(PANIC);
3268 } /*h_GetWorkStats */
3271 /*------------------------------------------------------------------------
3272 * PRIVATE h_ClassifyAddress
3275 * Given a target IP address and a candidate IP address (both
3276 * in host byte order), classify the candidate into one of three
3277 * buckets in relation to the target by bumping the counters passed
3281 * a_targetAddr : Target address.
3282 * a_candAddr : Candidate address.
3283 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
3284 * addresses are either in the same network
3285 * or the same subnet.
3286 * a_diffSubnetP : ...when the candidate is in a different
3288 * a_diffNetworkP : ...when the candidate is in a different
3295 * The target and candidate addresses are both in host byte
3296 * order, NOT network byte order, when passed in.
3300 *------------------------------------------------------------------------*/
3303 h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
3304 afs_int32 * a_sameNetOrSubnetP, afs_int32 * a_diffSubnetP,
3305 afs_int32 * a_diffNetworkP)
3306 { /*h_ClassifyAddress */
3308 afs_uint32 targetNet;
3309 afs_uint32 targetSubnet;
3311 afs_uint32 candSubnet;
3314 * Put bad values into the subnet info to start with.
3316 targetSubnet = (afs_uint32) 0;
3317 candSubnet = (afs_uint32) 0;
3320 * Pull out the network and subnetwork numbers from the target
3321 * and candidate addresses. We can short-circuit this whole
3322 * affair if the target and candidate addresses are not of the
3325 if (IN_CLASSA(a_targetAddr)) {
3326 if (!(IN_CLASSA(a_candAddr))) {
3327 (*a_diffNetworkP)++;
3330 targetNet = a_targetAddr & IN_CLASSA_NET;
3331 candNet = a_candAddr & IN_CLASSA_NET;
3332 if (IN_SUBNETA(a_targetAddr))
3333 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
3334 if (IN_SUBNETA(a_candAddr))
3335 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
3336 } else if (IN_CLASSB(a_targetAddr)) {
3337 if (!(IN_CLASSB(a_candAddr))) {
3338 (*a_diffNetworkP)++;
3341 targetNet = a_targetAddr & IN_CLASSB_NET;
3342 candNet = a_candAddr & IN_CLASSB_NET;
3343 if (IN_SUBNETB(a_targetAddr))
3344 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
3345 if (IN_SUBNETB(a_candAddr))
3346 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
3347 } /*Class B target */
3348 else if (IN_CLASSC(a_targetAddr)) {
3349 if (!(IN_CLASSC(a_candAddr))) {
3350 (*a_diffNetworkP)++;
3353 targetNet = a_targetAddr & IN_CLASSC_NET;
3354 candNet = a_candAddr & IN_CLASSC_NET;
3357 * Note that class C addresses can't have subnets,
3358 * so we leave the defaults untouched.
3360 } /*Class C target */
3362 targetNet = a_targetAddr;
3363 candNet = a_candAddr;
3364 } /*Class D address */
3367 * Now, simply compare the extracted net and subnet values for
3368 * the two addresses (which at this point are known to be of the
3371 if (targetNet == candNet) {
3372 if (targetSubnet == candSubnet)
3373 (*a_sameNetOrSubnetP)++;
3377 (*a_diffNetworkP)++;
3379 } /*h_ClassifyAddress */
3382 /*------------------------------------------------------------------------
3383 * EXPORTED h_GetHostNetStats
3386 * Iterate through the host table, and classify each (non-deleted)
3387 * host entry into ``proximity'' categories (same net or subnet,
3388 * different subnet, different network).
3391 * a_numHostsP : Set to total number of (non-deleted) hosts.
3392 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
3393 * a_diffSubnetP : Set to # hosts on diff subnet as server.
3394 * a_diffNetworkP : Set to # hosts on diff network as server.
3400 * We only count non-deleted hosts. The storage pointed to by our
3401 * parameters is zeroed upon entry.
3405 *------------------------------------------------------------------------*/
3408 h_GetHostNetStats(afs_int32 * a_numHostsP, afs_int32 * a_sameNetOrSubnetP,
3409 afs_int32 * a_diffSubnetP, afs_int32 * a_diffNetworkP)
3410 { /*h_GetHostNetStats */
3412 register struct host *hostP; /*Ptr to current host entry */
3413 register afs_uint32 currAddr_HBO; /*Curr host addr, host byte order */
3417 * Clear out the storage pointed to by our parameters.
3419 *a_numHostsP = (afs_int32) 0;
3420 *a_sameNetOrSubnetP = (afs_int32) 0;
3421 *a_diffSubnetP = (afs_int32) 0;
3422 *a_diffNetworkP = (afs_int32) 0;
3425 for (count = 0, hostP = hostList; hostP && count < hostCount; hostP = hostP->next, count++) {
3426 if (!(hostP->hostFlags & HOSTDELETED)) {
3428 * Bump the number of undeleted host entries found.
3429 * In classifying the current entry's address, make
3430 * sure to first convert to host byte order.
3433 currAddr_HBO = (afs_uint32) ntohl(hostP->host);
3434 h_ClassifyAddress(FS_HostAddr_HBO, currAddr_HBO,
3435 a_sameNetOrSubnetP, a_diffSubnetP,
3437 } /*Only look at non-deleted hosts */
3438 } /*For each host record hashed to this index */
3439 if (count != hostCount) {
3440 ViceLog(0, ("h_GetHostNetStats found %d of %d hosts\n", count, hostCount));
3441 } else if (hostP != NULL) {
3442 ViceLog(0, ("h_GetHostNetStats found more than %d hosts\n", hostCount));
3443 ShutDownAndCore(PANIC);
3446 } /*h_GetHostNetStats */
3448 static afs_uint32 checktime;
3449 static afs_uint32 clientdeletetime;
3450 static struct AFSFid zerofid;
3454 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
3455 * Since it can serialize them, and pile up, it should be a separate LWP
3456 * from other events.
3460 CheckHost(register struct host *host, int flags, void *rock)
3462 register struct client *client;
3463 struct rx_connection *cb_conn = NULL;
3466 #ifdef AFS_DEMAND_ATTACH_FS
3467 /* kill the checkhost lwp ASAP during shutdown */
3469 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3471 return H_ENUMERATE_BAIL(flags);
3476 /* Host is held by h_Enumerate */
3478 for (client = host->FirstClient; client; client = client->next) {
3479 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3480 client->deleted = 1;
3481 host->hostFlags |= CLIENTDELETED;
3484 if (host->LastCall < checktime) {
3486 if (!(host->hostFlags & HOSTDELETED)) {
3487 host->hostFlags |= HWHO_INPROGRESS;
3488 cb_conn = host->callback_rxcon;
3489 rx_GetConnection(cb_conn);
3490 if (host->LastCall < clientdeletetime) {
3491 host->hostFlags |= HOSTDELETED;
3492 if (!(host->hostFlags & VENUSDOWN)) {
3493 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3494 if (host->interface) {
3497 RXAFSCB_InitCallBackState3(cb_conn,
3503 RXAFSCB_InitCallBackState(cb_conn);
3506 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3509 (void)afs_inet_ntoa_r(host->host, hoststr);
3511 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3512 hoststr, ntohs(host->port)));
3513 host->hostFlags |= VENUSDOWN;
3515 /* Note: it's safe to delete hosts even if they have call
3516 * back state, because break delayed callbacks (called when a
3517 * message is received from the workstation) will always send a
3518 * break all call backs to the workstation if there is no
3523 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3525 (void)afs_inet_ntoa_r(host->host, hoststr);
3526 if (host->interface) {
3527 afsUUID uuid = host->interface->uuid;
3529 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3532 if (MultiProbeAlternateAddress_r(host)) {
3533 ViceLog(0,("CheckHost: Probing all interfaces of host %s:%d failed, code %d\n",
3534 hoststr, ntohs(host->port), code));
3535 host->hostFlags |= VENUSDOWN;
3540 code = RXAFSCB_Probe(cb_conn);
3544 ("CheckHost: Probe failed for host %s:%d, code %d\n",
3545 hoststr, ntohs(host->port), code));
3546 host->hostFlags |= VENUSDOWN;
3552 rx_PutConnection(cb_conn);
3555 host->hostFlags &= ~HWHO_INPROGRESS;
3566 CheckHost_r(register struct host *host, int flags, void *dummy)
3568 register struct client *client;
3569 struct rx_connection *cb_conn = NULL;
3572 #ifdef AFS_DEMAND_ATTACH_FS
3573 /* kill the checkhost lwp ASAP during shutdown */
3575 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3577 return H_ENUMERATE_BAIL(flags);
3582 /* Host is held by h_Enumerate_r */
3583 for (client = host->FirstClient; client; client = client->next) {
3584 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3585 client->deleted = 1;
3586 host->hostFlags |= CLIENTDELETED;
3589 if (host->LastCall < checktime) {
3591 if (!(host->hostFlags & HOSTDELETED)) {
3592 cb_conn = host->callback_rxcon;
3593 rx_GetConnection(cb_conn);
3594 if (host->LastCall < clientdeletetime) {
3595 host->hostFlags |= HOSTDELETED;
3596 if (!(host->hostFlags & VENUSDOWN)) {
3597 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3598 if (host->interface) {
3601 RXAFSCB_InitCallBackState3(cb_conn,
3607 RXAFSCB_InitCallBackState(cb_conn);
3610 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3613 (void)afs_inet_ntoa_r(host->host, hoststr);
3615 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3616 hoststr, ntohs(host->port)));
3617 host->hostFlags |= VENUSDOWN;
3619 /* Note: it's safe to delete hosts even if they have call
3620 * back state, because break delayed callbacks (called when a
3621 * message is received from the workstation) will always send a
3622 * break all call backs to the workstation if there is no
3627 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3629 (void)afs_inet_ntoa_r(host->host, hoststr);
3630 if (host->interface) {
3631 afsUUID uuid = host->interface->uuid;
3633 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3636 if (MultiProbeAlternateAddress_r(host)) {
3637 ViceLog(0,("CheckHost_r: Probing all interfaces of host %s:%d failed, code %d\n",
3638 hoststr, ntohs(host->port), code));
3639 host->hostFlags |= VENUSDOWN;
3644 code = RXAFSCB_Probe(cb_conn);
3648 ("CheckHost_r: Probe failed for host %s:%d, code %d\n",
3649 hoststr, ntohs(host->port), code));
3650 host->hostFlags |= VENUSDOWN;
3656 rx_PutConnection(cb_conn);
3668 * Set VenusDown for any hosts that have not had a call in 15 minutes and
3669 * don't respond to a probe. Note that VenusDown can only be cleared if
3670 * a message is received from the host (see ServerLWP in file.c).
3671 * Delete hosts that have not had any calls in 1 hour, clients that
3672 * have not had any calls in 15 minutes.
3674 * This routine is called roughly every 5 minutes.
3679 afs_uint32 now = FT_ApproxTime();
3681 memset(&zerofid, 0, sizeof(zerofid));
3683 * Send a probe to the workstation if it hasn't been heard from in
3686 checktime = now - 15 * 60;
3687 clientdeletetime = now - 120 * 60; /* 2 hours ago */
3690 h_Enumerate_r(CheckHost_r, hostList, NULL);
3695 * This is called with host locked and held. At this point, the
3696 * hostAddrHashTable has an entry for the primary addr/port inserted
3697 * by h_Alloc_r(). No other interfaces should be considered valid.
3699 * The addresses in the interfaceAddr list are in host byte order.
3702 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
3709 struct Interface *interface;
3712 afs_uint16 port7001 = htons(7001);
3717 number = interf->numberOfInterfaces;
3718 myAddr = host->host; /* current interface address */
3719 myPort = host->port; /* current port */
3722 ("initInterfaceAddr : host %s:%d numAddr %d\n",
3723 afs_inet_ntoa_r(myAddr, hoststr), ntohs(myPort), number));
3725 /* validation checks */
3726 if (number < 0 || number > AFS_MAX_INTERFACE_ADDR) {
3728 ("Invalid number of alternate addresses is %d\n", number));
3733 * The client's notion of its own IP addresses is not reliable.
3735 * 1. The client list might contain private address ranges which
3736 * are likely to be re-used by many clients allocated addresses
3739 * 2. The client list will not include any public addresses that
3740 * are hidden by a NAT.
3742 * 3. Private address ranges that are exposed to the server will
3743 * be obtained from the rx connections that use them.
3745 * 4. Lists provided by the client are not necessarily truthful.
3746 * Many existing clients (UNIX) do not refresh the IP address
3747 * list as the actual assigned addresses change. The end result
3748 * is that they report the initial address list for the lifetime
3749 * of the process. In other words, a client can report addresses
3750 * that they are in fact not using. Adding these addresses to
3751 * the host interface list without verification is not only
3752 * pointless, it is downright dangerous.
3754 * We therefore do not add alternate addresses to the addr hash table.
3755 * We only use them for multi-rx callback breaks.
3759 * Convert IP addresses to network byte order, and remove
3760 * duplicate IP addresses from the interface list, and
3761 * determine whether or not the incoming addr/port is
3762 * listed. Note that if the address matches it is not
3763 * truly a match because the port number for the entries
3764 * in the interface list are port 7001 and the port number
3765 * for this connection might not be 7001.
3767 for (i = 0, count = 0, found = 0; i < number; i++) {
3768 interf->addr_in[i] = htonl(interf->addr_in[i]);
3769 for (j = 0; j < count; j++) {
3770 if (interf->addr_in[j] == interf->addr_in[i])
3774 interf->addr_in[count] = interf->addr_in[i];
3775 if (interf->addr_in[count] == myAddr &&
3783 * Allocate and initialize an interface structure for this host.
3786 interface = (struct Interface *)
3787 malloc(sizeof(struct Interface) +
3788 (sizeof(struct AddrPort) * (count - 1)));
3790 ViceLog(0, ("Failed malloc in initInterfaceAddr_r 1\n"));
3793 interface->numberOfInterfaces = count;
3795 interface = (struct Interface *)
3796 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * count));
3798 ViceLog(0, ("Failed malloc in initInterfaceAddr_r 2\n"));
3801 interface->numberOfInterfaces = count + 1;
3802 interface->interface[count].addr = myAddr;
3803 interface->interface[count].port = myPort;
3804 interface->interface[count].valid = 1;
3807 for (i = 0; i < count; i++) {
3809 interface->interface[i].addr = interf->addr_in[i];
3810 /* We store the port as 7001 because the addresses reported by
3811 * TellMeAboutYourself and WhoAreYou RPCs are only valid if they
3812 * are coming from fully connected hosts (no NAT/PATs)
3814 interface->interface[i].port = port7001;
3815 interface->interface[i].valid =
3816 (interf->addr_in[i] == myAddr && port7001 == myPort) ? 1 : 0;
3819 interface->uuid = interf->uuid;
3821 assert(!host->interface);
3822 host->interface = interface;
3824 if (LogLevel >= 125) {
3825 afsUUID_to_string(&interface->uuid, uuidstr, 127);
3827 ViceLog(125, ("--- uuid %s\n", uuidstr));
3828 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
3829 ViceLog(125, ("--- alt address %s:%d\n",
3830 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
3831 ntohs(host->interface->interface[i].port)));
3838 /* deleted a HashChain structure for this address and host */
3839 /* returns 1 on success */
3841 h_DeleteHostFromAddrHashTable_r(afs_uint32 addr, afs_uint16 port,
3845 register struct h_AddrHashChain **hp, *th;
3847 if (addr == 0 && port == 0)
3850 for (hp = &hostAddrHashTable[h_HashIndex(addr)]; (th = *hp);
3852 assert(th->hostPtr);
3853 if (th->hostPtr == host && th->addr == addr && th->port == port) {
3854 ViceLog(125, ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d)\n",
3855 host, afs_inet_ntoa_r(host->host, hoststr),
3856 ntohs(host->port)));
3863 ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) not found\n",
3864 host, afs_inet_ntoa_r(host->host, hoststr),
3865 ntohs(host->port)));
3871 ** prints out all alternate interface address for the host. The 'level'
3872 ** parameter indicates what level of debugging sets this output
3875 printInterfaceAddr(struct host *host, int level)
3880 if (host->interface) {
3881 /* check alternate addresses */
3882 number = host->interface->numberOfInterfaces;
3884 ViceLog(level, ("no-addresses "));
3886 for (i = 0; i < number; i++)
3887 ViceLog(level, ("%s:%d ", afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
3888 ntohs(host->interface->interface[i].port)));
3891 ViceLog(level, ("\n"));