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;
978 if (hostCount == 0) {
982 list = (struct host **)malloc(hostCount * sizeof(struct host *));
984 ViceLog(0, ("Failed malloc in h_Enumerate (list)\n"));
987 flags = (int *)malloc(hostCount * sizeof(int));
989 ViceLog(0, ("Failed malloc in h_Enumerate (flags)\n"));
992 for (totalCount = count = 0, host = hostList;
993 host && totalCount < hostCount;
994 host = host->next, totalCount++) {
996 if (!(host->hostFlags & HOSTDELETED)) {
1002 if (totalCount != hostCount) {
1003 ViceLog(0, ("h_Enumerate found %d of %d hosts\n", totalCount, hostCount));
1004 } else if (host != NULL) {
1005 ViceLog(0, ("h_Enumerate found more than %d hosts\n", hostCount));
1006 ShutDownAndCore(PANIC);
1009 for (i = 0; i < count; i++) {
1010 flags[i] = (*proc) (list[i], flags[i], param);
1011 h_Release_r(list[i]);
1012 /* bail out of the enumeration early */
1013 if (H_ENUMERATE_ISSET_BAIL(flags[i]))
1017 free((void *)flags);
1021 /* h_Enumerate_r (revised):
1022 * Calls (*proc)(host, flags, param) for each host in hostList, starting
1023 * at enumstart. Called only under H_LOCK. Hosts may be deleted (have
1024 * delete flag set); ditto for clients. refCount is always incremented
1025 * before (*proc) is called. The param flags is passed to (*proc) as the
1026 * param flags, permitting (*proc) to stop the enumeration (BAIL).
1028 * Needed? Why not always h_Hold_r and h_Release_r in (*proc), or even -never-
1029 * h_Hold_r or h_Release_r in (*proc)?
1031 * @note Assumes that hostList is only prepended to, that a host is never
1032 * inserted into the middle. Otherwise this would not be guaranteed to
1035 * **The proc should return 0 if the host should be released, 1 if it should
1036 * be held after enumeration.
1039 h_Enumerate_r(int (*proc) (struct host *, int, void *),
1040 struct host *enumstart, void *param)
1042 register struct host *host, *next;
1048 if (hostCount == 0) {
1055 /* find the first non-deleted host, so we know where to actually start
1057 for (count = 0; host && count < hostCount; count++) {
1058 if (!(host->hostFlags & HOSTDELETED)) {
1065 /* we didn't find a non-deleted host... */
1067 if (host && count >= hostCount) {
1068 /* ...because we found a loop */
1069 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", hostCount));
1070 ShutDownAndCore(PANIC);
1073 /* ...because the hostList is full of deleted hosts */
1077 h_Hold_r(enumstart);
1079 /* remember hostCount, lest it change over the potential H_LOCK drop in
1081 origHostCount = hostCount;
1083 for (count = 0, host = enumstart; host && count < origHostCount; host = next, flags = nflags, count++) {
1086 /* find the next non-deleted host */
1087 while (next && (next->hostFlags & HOSTDELETED)) {
1089 /* inc count for the skipped-over host */
1090 if (++count > origHostCount) {
1091 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", origHostCount));
1092 ShutDownAndCore(PANIC);
1095 if (next && !H_ENUMERATE_ISSET_BAIL(flags))
1098 if (!(host->hostFlags & HOSTDELETED)) {
1099 flags = (*proc) (host, flags, param);
1100 if (H_ENUMERATE_ISSET_BAIL(flags)) {
1101 h_Release_r(host); /* this might free up the host */
1105 h_Release_r(host); /* this might free up the host */
1107 if (host != NULL && count >= origHostCount) {
1108 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", origHostCount));
1109 ShutDownAndCore(PANIC);
1111 } /*h_Enumerate_r */
1114 /* inserts a new HashChain structure corresponding to this UUID */
1116 h_AddHostToUuidHashTable_r(struct afsUUID *uuid, struct host *host)
1119 struct h_UuidHashChain *chain;
1120 char uuid1[128], uuid2[128];
1123 /* hash into proper bucket */
1124 index = h_UuidHashIndex(uuid);
1126 /* don't add the same entry multiple times */
1127 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
1128 if (!chain->hostPtr)
1131 if (chain->hostPtr->interface &&
1132 afs_uuid_equal(&chain->hostPtr->interface->uuid, uuid)) {
1133 if (LogLevel >= 125) {
1134 afsUUID_to_string(&chain->hostPtr->interface->uuid, uuid1,
1136 afsUUID_to_string(uuid, uuid2, 127);
1137 ViceLog(125, ("h_AddHostToUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s) exists as %s:%d (uuid %s)\n",
1139 afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1140 ntohs(chain->hostPtr->port), uuid2));
1146 /* insert into beginning of list for this bucket */
1147 chain = (struct h_UuidHashChain *)malloc(sizeof(struct h_UuidHashChain));
1149 ViceLog(0, ("Failed malloc in h_AddHostToUuidHashTable_r\n"));
1152 chain->hostPtr = host;
1153 chain->next = hostUuidHashTable[index];
1154 hostUuidHashTable[index] = chain;
1157 afsUUID_to_string(uuid, uuid2, 127);
1159 ("h_AddHostToUuidHashTable_r: host %p (%s:%d) added as uuid %s\n",
1160 host, afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1161 ntohs(chain->hostPtr->port), uuid2));
1164 /* deletes a HashChain structure corresponding to this host */
1166 h_DeleteHostFromUuidHashTable_r(struct host *host)
1169 register struct h_UuidHashChain **uhp, *uth;
1173 if (!host->interface)
1176 /* hash into proper bucket */
1177 index = h_UuidHashIndex(&host->interface->uuid);
1179 if (LogLevel >= 125)
1180 afsUUID_to_string(&host->interface->uuid, uuid1, 127);
1181 for (uhp = &hostUuidHashTable[index]; (uth = *uhp); uhp = &uth->next) {
1182 assert(uth->hostPtr);
1183 if (uth->hostPtr == host) {
1185 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d)\n",
1186 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1187 ntohs(host->port)));
1194 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d) not found\n",
1195 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1196 ntohs(host->port)));
1200 /* inserts a new HashChain structure corresponding to this address */
1202 h_AddHostToAddrHashTable_r(afs_uint32 addr, afs_uint16 port, struct host *host)
1205 struct h_AddrHashChain *chain;
1208 /* hash into proper bucket */
1209 index = h_HashIndex(addr);
1211 /* don't add the same address:port pair entry multiple times */
1212 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1213 if (chain->addr == addr && chain->port == port) {
1214 if (chain->hostPtr == host) {
1216 ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) already hashed\n",
1217 host, afs_inet_ntoa_r(chain->addr, hoststr),
1218 ntohs(chain->port)));
1221 if (!(chain->hostPtr->hostFlags & HOSTDELETED)) {
1223 ("h_AddHostToAddrHashTable_r: refusing to hash host %" AFS_PTR_FMT ", %"
1224 AFS_PTR_FMT " (%s:%d) already hashed\n",
1225 host, chain->hostPtr, afs_inet_ntoa_r(chain->addr, hoststr),
1226 ntohs(chain->port)));
1232 /* insert into beginning of list for this bucket */
1233 chain = (struct h_AddrHashChain *)malloc(sizeof(struct h_AddrHashChain));
1235 ViceLog(0, ("Failed malloc in h_AddHostToAddrHashTable_r\n"));
1238 chain->hostPtr = host;
1239 chain->next = hostAddrHashTable[index];
1242 hostAddrHashTable[index] = chain;
1243 ViceLog(125, ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " added as %s:%d\n",
1244 host, afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1248 * This is called with host locked and held.
1249 * It is called to either validate or add an additional interface
1250 * address/port on the specified host.
1252 * All addresses are in network byte order.
1255 addInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1259 struct Interface *interface;
1260 char hoststr[16], hoststr2[16];
1263 assert(host->interface);
1266 * Make sure this address is on the list of known addresses
1269 number = host->interface->numberOfInterfaces;
1270 for (i = 0; i < number; i++) {
1271 if (host->interface->interface[i].addr == addr &&
1272 host->interface->interface[i].port == port) {
1274 ("addInterfaceAddr : found host %" AFS_PTR_FMT " (%s:%d) adding %s:%d%s\n",
1275 host, afs_inet_ntoa_r(host->host, hoststr),
1276 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1277 ntohs(port), host->interface->interface[i].valid ? "" :
1280 if (host->interface->interface[i].valid == 0) {
1281 host->interface->interface[i].valid = 1;
1282 h_AddHostToAddrHashTable_r(addr, port, host);
1288 ViceLog(125, ("addInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) adding %s:%d\n",
1289 host, afs_inet_ntoa_r(host->host, hoststr),
1290 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1293 interface = (struct Interface *)
1294 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * number));
1296 ViceLog(0, ("Failed malloc in addInterfaceAddr_r\n"));
1299 interface->numberOfInterfaces = number + 1;
1300 interface->uuid = host->interface->uuid;
1301 for (i = 0; i < number; i++)
1302 interface->interface[i] = host->interface->interface[i];
1304 /* Add the new valid interface */
1305 interface->interface[number].addr = addr;
1306 interface->interface[number].port = port;
1307 interface->interface[number].valid = 1;
1308 h_AddHostToAddrHashTable_r(addr, port, host);
1309 free(host->interface);
1310 host->interface = interface;
1317 * This is called with host locked and held.
1319 * All addresses are in network byte order.
1322 removeInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1326 struct Interface *interface;
1327 char hoststr[16], hoststr2[16];
1330 assert(host->interface);
1332 ViceLog(125, ("removeInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1333 host, afs_inet_ntoa_r(host->host, hoststr),
1334 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1338 * Make sure this address is on the list of known addresses
1341 interface = host->interface;
1342 number = host->interface->numberOfInterfaces;
1343 for (i = 0; i < number; i++) {
1344 if (interface->interface[i].addr == addr &&
1345 interface->interface[i].port == port) {
1346 if (interface->interface[i].valid)
1347 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1349 for (; i < number; i++) {
1350 interface->interface[i] = interface->interface[i+1];
1352 interface->numberOfInterfaces = number;
1361 * This is called with host locked and held.
1363 * All addresses are in network byte order.
1366 invalidateInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1370 struct Interface *interface;
1371 char hoststr[16], hoststr2[16];
1374 assert(host->interface);
1376 ViceLog(125, ("invalidateInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1377 host, afs_inet_ntoa_r(host->host, hoststr),
1378 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1382 * Make sure this address is on the list of known addresses
1385 interface = host->interface;
1386 number = host->interface->numberOfInterfaces;
1387 for (i = 0; i < number; i++) {
1388 if (interface->interface[i].addr == addr &&
1389 interface->interface[i].port == port) {
1390 if (interface->interface[i].valid) {
1391 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1392 interface->interface[i].valid = 0;
1403 * This is called with host locked and held. This function differs
1404 * from removeInterfaceAddr_r in that it is called when the address
1405 * is being removed from the host regardless of whether or not there
1406 * is an interface list for the host. This function will delete the
1407 * host if there are no addresses left on it.
1409 * All addresses are in network byte order.
1412 removeAddress_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1415 char hoststr[16], hoststr2[16];
1416 struct rx_connection *rxconn;
1418 if (!host->interface || host->interface->numberOfInterfaces == 1) {
1419 if (host->host == addr && host->port == port) {
1421 ("Removing only address for host %" AFS_PTR_FMT " (%s:%d), deleting host.\n",
1422 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1423 host->hostFlags |= HOSTDELETED;
1425 * Do not remove the primary addr/port from the hash table.
1426 * It will be ignored due to the HOSTDELETED flag and will
1427 * be removed when h_TossStuff_r() cleans up the HOSTDELETED
1428 * host. Removing it here will only result in a search for
1429 * the host/addr/port in the hash chain which will fail.
1433 ("Removing address that does not belong to host %" AFS_PTR_FMT " (%s:%d).\n",
1434 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1437 if (host->host == addr && host->port == port) {
1438 removeInterfaceAddr_r(host, addr, port);
1440 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1441 if (host->interface->interface[i].valid) {
1443 ("Removed address for host %" AFS_PTR_FMT " (%s:%d), new primary interface %s:%d.\n",
1444 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1445 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr2),
1446 ntohs(host->interface->interface[i].port)));
1447 host->host = host->interface->interface[i].addr;
1448 host->port = host->interface->interface[i].port;
1449 h_AddHostToAddrHashTable_r(host->host, host->port, host);
1454 if (i == host->interface->numberOfInterfaces) {
1456 ("Removed only address for host %" AFS_PTR_FMT " (%s:%d), no valid alternate interfaces, deleting host.\n",
1457 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1458 host->hostFlags |= HOSTDELETED;
1459 /* addr/port was removed from the hash table */
1463 rxconn = host->callback_rxcon;
1464 host->callback_rxcon = NULL;
1467 rx_DestroyConnection(rxconn);
1472 sc = rxnull_NewClientSecurityObject();
1473 host->callback_rxcon =
1474 rx_NewConnection(host->host, host->port, 1, sc, 0);
1475 rx_SetConnDeadTime(host->callback_rxcon, 50);
1476 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
1479 /* not the primary addr/port, just invalidate it */
1480 invalidateInterfaceAddr_r(host, addr, port);
1487 h_threadquota(int waiting)
1492 } else if (lwps > 32) {
1495 } else if (lwps > 16) {
1505 /* If found, host is returned with refCount incremented */
1507 h_GetHost_r(struct rx_connection *tcon)
1510 struct host *oldHost;
1512 struct interfaceAddr interf;
1513 int interfValid = 0;
1514 struct Identity *identP = NULL;
1517 char hoststr[16], hoststr2[16];
1519 struct rx_connection *cb_conn = NULL;
1520 struct rx_connection *cb_in = NULL;
1522 caps.Capabilities_val = NULL;
1524 haddr = rxr_HostOf(tcon);
1525 hport = rxr_PortOf(tcon);
1528 rx_DestroyConnection(cb_in);
1531 if (caps.Capabilities_val)
1532 free(caps.Capabilities_val);
1533 caps.Capabilities_val = NULL;
1534 caps.Capabilities_len = 0;
1537 if (h_Lookup_r(haddr, hport, &host))
1539 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
1540 if (host && !identP && !(host->Console & 1)) {
1541 /* This is a new connection, and we already have a host
1542 * structure for this address. Verify that the identity
1543 * of the caller matches the identity in the host structure.
1545 if ((host->hostFlags & HWHO_INPROGRESS) &&
1546 h_threadquota(host->lock.num_waiting)) {
1552 if (!(host->hostFlags & ALTADDR) ||
1553 (host->hostFlags & HOSTDELETED)) {
1554 /* Another thread is doing initialization
1555 * or this host was deleted while we
1556 * waited for the lock. */
1559 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1560 host, afs_inet_ntoa_r(host->host, hoststr),
1561 ntohs(host->port)));
1565 host->hostFlags |= HWHO_INPROGRESS;
1566 host->hostFlags &= ~ALTADDR;
1568 /* We received a new connection from an IP address/port
1569 * that is associated with 'host' but the address/port of
1570 * the callback connection does not have to match it.
1571 * If there is a match, we can use the existing callback
1572 * connection to verify the UUID. If they do not match
1573 * we need to use a new callback connection to verify the
1574 * UUID of the incoming caller and perhaps use the old
1575 * callback connection to verify that the old address/port
1579 cb_conn = host->callback_rxcon;
1580 rx_GetConnection(cb_conn);
1582 if (haddr == host->host && hport == host->port) {
1583 /* The existing callback connection matches the
1584 * incoming connection so just use it.
1587 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1588 if (code == RXGEN_OPCODE)
1589 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1591 /* We do not have a match. Create a new connection
1592 * for the new addr/port and use multi_Rx to probe
1593 * both of them simultaneously.
1596 sc = rxnull_NewClientSecurityObject();
1597 cb_in = rx_NewConnection(haddr, hport, 1, sc, 0);
1598 rx_SetConnDeadTime(cb_in, 50);
1599 rx_SetConnHardDeadTime(cb_in, AFS_HARDDEADTIME);
1602 RXAFSCB_TellMeAboutYourself(cb_in, &interf, &caps);
1603 if (code == RXGEN_OPCODE)
1604 code = RXAFSCB_WhoAreYou(cb_in, &interf);
1606 rx_PutConnection(cb_conn);
1609 if ((code == RXGEN_OPCODE) ||
1610 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1611 identP = (struct Identity *)malloc(sizeof(struct Identity));
1613 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1617 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1618 if (cb_in == NULL) {
1619 /* The host on this connection was unable to respond to
1620 * the WhoAreYou. We will treat this as a new connection
1621 * from the existing host. The worst that can happen is
1622 * that we maintain some extra callback state information */
1623 if (host->interface) {
1625 ("Host %" AFS_PTR_FMT " (%s:%d) used to support WhoAreYou, deleting.\n",
1627 afs_inet_ntoa_r(host->host, hoststr),
1628 ntohs(host->port)));
1629 host->hostFlags |= HOSTDELETED;
1630 host->hostFlags &= ~HWHO_INPROGRESS;
1637 /* The incoming connection does not support WhoAreYou but
1638 * the original one might have. Use removeAddress_r() to
1639 * remove this addr/port from the host that was found.
1640 * If there are no more addresses left for the host it
1641 * will be deleted. Then we retry.
1643 removeAddress_r(host, haddr, hport);
1644 host->hostFlags &= ~HWHO_INPROGRESS;
1645 host->hostFlags |= ALTADDR;
1651 } else if (code == 0) {
1653 identP = (struct Identity *)malloc(sizeof(struct Identity));
1655 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1659 identP->uuid = interf.uuid;
1660 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1661 /* Check whether the UUID on this connection matches
1662 * the UUID in the host structure. If they don't match
1663 * then this is not the same host as before. */
1664 if (!host->interface
1665 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid)) {
1668 ("Uuid doesn't match connection (%s:%d).\n",
1669 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport)));
1670 removeAddress_r(host, haddr, hport);
1673 ("Uuid doesn't match host %" AFS_PTR_FMT " (%s:%d).\n",
1674 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1676 removeAddress_r(host, host->host, host->port);
1678 host->hostFlags &= ~HWHO_INPROGRESS;
1679 host->hostFlags |= ALTADDR;
1685 /* the UUID matched the client at the incoming addr/port
1686 * but this is not the address of the active callback
1687 * connection. Try that connection and see if the client
1688 * is still there and if the reported UUID is the same.
1691 afsUUID uuid = host->interface->uuid;
1692 cb_conn = host->callback_rxcon;
1693 rx_GetConnection(cb_conn);
1694 rx_SetConnDeadTime(cb_conn, 2);
1695 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1697 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1699 rx_SetConnDeadTime(cb_conn, 50);
1700 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1701 rx_PutConnection(cb_conn);
1704 /* The primary address is either not responding or
1705 * is not the client we are looking for. Need to
1706 * remove the primary address and add swap in the new
1707 * callback connection, and destroy the old one.
1709 struct rx_connection *rxconn;
1710 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
1712 afs_inet_ntoa_r(host->host, hoststr),
1713 ntohs(host->port),code2));
1716 * make sure we add and then remove. otherwise, we
1717 * might end up with no valid interfaces after the
1718 * remove and the host will have been marked deleted.
1720 addInterfaceAddr_r(host, haddr, hport);
1721 removeInterfaceAddr_r(host, host->host, host->port);
1724 rxconn = host->callback_rxcon;
1725 host->callback_rxcon = cb_in;
1730 * If rx_DestroyConnection calls h_FreeConnection we
1731 * will deadlock on the host_glock_mutex. Work around
1732 * the problem by unhooking the client from the
1733 * connection before destroying the connection.
1735 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
1736 rx_DestroyConnection(rxconn);
1742 /* A callback to the incoming connection address is failing.
1743 * Assume that the addr/port is no longer associated with the host
1744 * returned by h_Lookup_r.
1747 ("CB: WhoAreYou failed for connection (%s:%d) , error %d\n",
1748 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport), code));
1749 removeAddress_r(host, haddr, hport);
1750 host->hostFlags &= ~HWHO_INPROGRESS;
1751 host->hostFlags |= ALTADDR;
1755 rx_DestroyConnection(cb_in);
1760 ("CB: WhoAreYou failed for host %" AFS_PTR_FMT " (%s:%d), error %d\n",
1761 host, afs_inet_ntoa_r(host->host, hoststr),
1762 ntohs(host->port), code));
1763 host->hostFlags |= VENUSDOWN;
1766 if (caps.Capabilities_val
1767 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1768 host->hostFlags |= HERRORTRANS;
1770 host->hostFlags &= ~(HERRORTRANS);
1771 host->hostFlags |= ALTADDR;
1772 host->hostFlags &= ~HWHO_INPROGRESS;
1775 if (!(host->hostFlags & ALTADDR)) {
1776 /* another thread is doing the initialisation */
1778 ("Host %" AFS_PTR_FMT " (%s:%d) waiting for host-init to complete\n",
1779 host, afs_inet_ntoa_r(host->host, hoststr),
1780 ntohs(host->port)));
1784 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1785 host, afs_inet_ntoa_r(host->host, hoststr),
1786 ntohs(host->port)));
1790 /* We need to check whether the identity in the host structure
1791 * matches the identity on the connection. If they don't match
1792 * then treat this a new host. */
1793 if (!(host->Console & 1)
1794 && ((!identP->valid && host->interface)
1795 || (identP->valid && !host->interface)
1797 && !afs_uuid_equal(&identP->uuid,
1798 &host->interface->uuid)))) {
1799 char uuid1[128], uuid2[128];
1801 afsUUID_to_string(&identP->uuid, uuid1, 127);
1802 if (host->interface)
1803 afsUUID_to_string(&host->interface->uuid, uuid2, 127);
1805 ("CB: new identity for host %p (%s:%d), "
1806 "deleting(%x %p %s %s)\n",
1807 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1808 identP->valid, host->interface,
1809 identP->valid ? uuid1 : "no_uuid",
1810 host->interface ? uuid2 : "no_uuid"));
1812 /* The host in the cache is not the host for this connection */
1814 host->hostFlags |= HOSTDELETED;
1820 host = h_Alloc_r(tcon); /* returned held and locked */
1821 h_gethostcps_r(host, FT_ApproxTime());
1822 if (!(host->Console & 1)) {
1824 cb_conn = host->callback_rxcon;
1825 rx_GetConnection(cb_conn);
1826 host->hostFlags |= HWHO_INPROGRESS;
1829 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1830 if (code == RXGEN_OPCODE)
1831 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1832 rx_PutConnection(cb_conn);
1835 if ((code == RXGEN_OPCODE) ||
1836 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1839 (struct Identity *)malloc(sizeof(struct Identity));
1844 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1849 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1851 ("Host %" AFS_PTR_FMT " (%s:%d) does not support WhoAreYou.\n",
1852 host, afs_inet_ntoa_r(host->host, hoststr),
1853 ntohs(host->port)));
1855 } else if (code == 0) {
1858 (struct Identity *)malloc(sizeof(struct Identity));
1863 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1868 identP->uuid = interf.uuid;
1870 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1872 ("WhoAreYou success on host %" AFS_PTR_FMT " (%s:%d)\n",
1873 host, afs_inet_ntoa_r(host->host, hoststr),
1874 ntohs(host->port)));
1876 if (code == 0 && !identP->valid) {
1877 cb_conn = host->callback_rxcon;
1878 rx_GetConnection(cb_conn);
1880 code = RXAFSCB_InitCallBackState(cb_conn);
1881 rx_PutConnection(cb_conn);
1884 } else if (code == 0) {
1885 oldHost = h_LookupUuid_r(&identP->uuid);
1890 if (oldHost->hostFlags & HOSTDELETED) {
1891 h_Unlock_r(oldHost);
1892 h_Release_r(oldHost);
1900 oldHost->hostFlags |= HWHO_INPROGRESS;
1902 if (oldHost->interface) {
1904 afsUUID uuid = oldHost->interface->uuid;
1905 cb_conn = oldHost->callback_rxcon;
1906 rx_GetConnection(cb_conn);
1907 rx_SetConnDeadTime(cb_conn, 2);
1908 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1910 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1912 rx_SetConnDeadTime(cb_conn, 50);
1913 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1914 rx_PutConnection(cb_conn);
1917 /* The primary address is either not responding or
1918 * is not the client we are looking for.
1919 * MultiProbeAlternateAddress_r() will remove the
1920 * alternate interfaces that do not have the same
1922 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
1924 afs_inet_ntoa_r(oldHost->host, hoststr),
1925 ntohs(oldHost->port),code2));
1926 MultiProbeAlternateAddress_r(oldHost);
1933 /* This is a new address for an existing host. Update
1934 * the list of interfaces for the existing host and
1935 * delete the host structure we just allocated. */
1937 /* prevent warnings while manipulating interface lists */
1938 host->hostFlags |= HOSTDELETED;
1940 if (oldHost->host != haddr || oldHost->port != hport) {
1941 struct rx_connection *rxconn;
1944 ("CB: Host %" AFS_PTR_FMT " (%s:%d) has new addr %s:%d\n",
1946 afs_inet_ntoa_r(oldHost->host, hoststr2),
1947 ntohs(oldHost->port),
1948 afs_inet_ntoa_r(haddr, hoststr),
1951 * add then remove. otherwise the host may get marked
1952 * deleted if we removed the only valid address.
1954 addInterfaceAddr_r(oldHost, haddr, hport);
1955 if (probefail || oldHost->host == haddr) {
1957 * The probe failed which means that the old
1958 * address is either unreachable or is not the
1959 * same host we were just contacted by. We will
1960 * also remove addresses if only the port has
1961 * changed because that indicates the client
1964 removeInterfaceAddr_r(oldHost, oldHost->host, oldHost->port);
1967 struct Interface *interface = oldHost->interface;
1968 int number = oldHost->interface->numberOfInterfaces;
1969 for (i = 0; i < number; i++) {
1970 if (interface->interface[i].addr == haddr &&
1971 interface->interface[i].port != hport) {
1973 * We have just been contacted by a client
1974 * that has been seen from behind a NAT
1975 * and at least one other address.
1977 removeInterfaceAddr_r(oldHost, haddr,
1978 interface->interface[i].port);
1983 h_AddHostToAddrHashTable_r(haddr, hport, oldHost);
1984 oldHost->host = haddr;
1985 oldHost->port = hport;
1986 rxconn = oldHost->callback_rxcon;
1987 oldHost->callback_rxcon = host->callback_rxcon;
1988 host->callback_rxcon = rxconn;
1990 /* don't destroy rxconn here; let h_TossStuff_r
1991 * take care of that via h_Release_r below */
1993 host->hostFlags &= ~HWHO_INPROGRESS;
1995 /* release host because it was allocated by h_Alloc_r */
1998 /* the new host is held and locked */
2000 /* This really is a new host */
2001 h_AddHostToUuidHashTable_r(&identP->uuid, host);
2002 cb_conn = host->callback_rxcon;
2003 rx_GetConnection(cb_conn);
2006 RXAFSCB_InitCallBackState3(cb_conn,
2008 rx_PutConnection(cb_conn);
2013 ("InitCallBackState3 success on host %" AFS_PTR_FMT " (%s:%d)\n",
2014 host, afs_inet_ntoa_r(host->host, hoststr),
2015 ntohs(host->port)));
2016 assert(interfValid == 1);
2017 initInterfaceAddr_r(host, &interf);
2023 ("CB: RCallBackConnectBack failed for %" AFS_PTR_FMT " (%s:%d)\n",
2024 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
2025 host->hostFlags |= VENUSDOWN;
2028 ("CB: RCallBackConnectBack succeeded for %" AFS_PTR_FMT " (%s:%d)\n",
2029 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
2030 host->hostFlags |= RESETDONE;
2033 if (caps.Capabilities_val
2034 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
2035 host->hostFlags |= HERRORTRANS;
2037 host->hostFlags &= ~(HERRORTRANS);
2038 host->hostFlags |= ALTADDR; /* host structure initialization complete */
2039 host->hostFlags &= ~HWHO_INPROGRESS;
2044 if (caps.Capabilities_val)
2045 free(caps.Capabilities_val);
2046 caps.Capabilities_val = NULL;
2047 caps.Capabilities_len = 0;
2049 rx_DestroyConnection(cb_in);
2057 static char localcellname[PR_MAXNAMELEN + 1];
2058 char local_realms[AFS_NUM_LREALMS][AFS_REALM_SZ];
2059 int num_lrealms = -1;
2063 h_InitHostPackage(void)
2065 memset(&nulluuid, 0, sizeof(afsUUID));
2066 afsconf_GetLocalCell(confDir, localcellname, PR_MAXNAMELEN);
2067 if (num_lrealms == -1) {
2069 for (i=0; i<AFS_NUM_LREALMS; i++) {
2070 if (afs_krb_get_lrealm(local_realms[i], i) != 0 /*KSUCCESS*/)
2076 ("afs_krb_get_lrealm failed, using %s.\n",
2078 strncpy(local_realms[0], localcellname, AFS_REALM_SZ);
2084 /* initialize the rest of the local realms to nullstring for debugging */
2085 for (; i<AFS_NUM_LREALMS; i++)
2086 local_realms[i][0] = '\0';
2088 rxcon_ident_key = rx_KeyCreate((rx_destructor_t) free);
2089 rxcon_client_key = rx_KeyCreate((rx_destructor_t) 0);
2090 #ifdef AFS_PTHREAD_ENV
2091 assert(pthread_mutex_init(&host_glock_mutex, NULL) == 0);
2092 #endif /* AFS_PTHREAD_ENV */
2096 MapName_r(char *aname, char *acell, afs_int32 * aval)
2101 afs_int32 anamelen, cnamelen;
2105 anamelen = strlen(aname);
2106 if (anamelen >= PR_MAXNAMELEN)
2107 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
2109 lnames.namelist_len = 1;
2110 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
2111 lids.idlist_len = 0;
2112 lids.idlist_val = NULL;
2114 cnamelen = strlen(acell);
2116 if (afs_is_foreign_ticket_name(aname, NULL, acell, localcellname)) {
2118 ("MapName: cell is foreign. cell=%s, localcell=%s, localrealms={%s,%s,%s,%s}\n",
2119 acell, localcellname, local_realms[0],local_realms[1],local_realms[2],local_realms[3]));
2120 if ((anamelen + cnamelen + 1) >= PR_MAXNAMELEN) {
2122 ("MapName: Name too long, using AnonymousID for %s@%s\n",
2124 *aval = AnonymousID;
2127 foreign = 1; /* attempt cross-cell authentication */
2128 tname = (char *)malloc(PR_MAXNAMELEN);
2130 ViceLog(0, ("Failed malloc in MapName_r\n"));
2133 strcpy(tname, aname);
2134 tname[anamelen] = '@';
2135 strcpy(tname + anamelen + 1, acell);
2136 lnames.namelist_val = (prname *) tname;
2141 code = hpr_NameToId(&lnames, &lids);
2144 if (lids.idlist_val) {
2145 *aval = lids.idlist_val[0];
2146 if (*aval == AnonymousID) {
2148 ("MapName: NameToId on %s returns anonymousID\n",
2149 lnames.namelist_val[0]));
2151 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
2154 ("MapName: NameToId on '%s' is unknown\n",
2155 lnames.namelist_val[0]));
2161 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
2169 /* NOTE: this returns the client with a Write lock and a refCount */
2171 h_ID2Client(afs_int32 vid)
2173 register struct client *client;
2174 register struct host *host;
2178 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
2179 if (host->hostFlags & HOSTDELETED)
2181 for (client = host->FirstClient; client; client = client->next) {
2182 if (!client->deleted && client->ViceId == vid) {
2185 ObtainWriteLock(&client->lock);
2190 if (count != hostCount) {
2191 ViceLog(0, ("h_ID2Client found %d of %d hosts\n", count, hostCount));
2192 } else if (host != NULL) {
2193 ViceLog(0, ("h_ID2Client found more than %d hosts\n", hostCount));
2194 ShutDownAndCore(PANIC);
2202 * Called by the server main loop. Returns a h_Held client, which must be
2203 * released later the main loop. Allocates a client if the matching one
2204 * isn't around. The client is returned with its reference count incremented
2205 * by one. The caller must call h_ReleaseClient_r when finished with
2208 * The refCount on client->host is returned incremented. h_ReleaseClient_r
2209 * does not decrement the refCount on client->host.
2212 h_FindClient_r(struct rx_connection *tcon)
2214 register struct client *client;
2215 struct host *host = NULL;
2216 struct client *oldClient;
2217 afs_int32 viceid = 0;
2221 #if (64-MAXKTCNAMELEN)
2222 ticket name length != 64
2226 char uname[PR_MAXNAMELEN];
2227 char tcell[MAXKTCREALMLEN];
2231 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2232 if (client && client->sid == rxr_CidOf(tcon)
2233 && client->VenusEpoch == rxr_GetEpoch(tcon)
2234 && !(client->host->hostFlags & HOSTDELETED)) {
2237 h_Hold_r(client->host);
2238 if (!client->deleted && client->prfail != 2) {
2239 /* Could add shared lock on client here */
2240 /* note that we don't have to lock entry in this path to
2241 * ensure CPS is initialized, since we don't call rx_SetSpecific
2242 * until initialization is done, and we only get here if
2243 * rx_GetSpecific located the client structure.
2248 ObtainWriteLock(&client->lock); /* released at end */
2254 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
2256 ("FindClient: authenticating connection: authClass=%d\n",
2258 if (authClass == 1) {
2259 /* A bcrypt tickets, no longer supported */
2260 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
2261 viceid = AnonymousID;
2262 expTime = 0x7fffffff;
2263 } else if (authClass == 2) {
2266 /* kerberos ticket */
2267 code = rxkad_GetServerInfo(tcon, /*level */ 0, (afs_uint32 *)&expTime,
2268 tname, tinst, tcell, &kvno);
2270 ViceLog(1, ("Failed to get rxkad ticket info\n"));
2271 viceid = AnonymousID;
2272 expTime = 0x7fffffff;
2274 int ilen = strlen(tinst);
2276 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
2277 tname, tinst, tcell, expTime, kvno));
2278 strncpy(uname, tname, sizeof(uname));
2280 if (strlen(uname) + 1 + ilen >= sizeof(uname))
2283 strcat(uname, tinst);
2285 /* translate the name to a vice id */
2286 code = MapName_r(uname, tcell, &viceid);
2290 ("failed to map name=%s, cell=%s -> code=%d\n", uname,
2293 viceid = AnonymousID;
2294 expTime = 0x7fffffff;
2298 viceid = AnonymousID; /* unknown security class */
2299 expTime = 0x7fffffff;
2302 if (!client) { /* loop */
2303 host = h_GetHost_r(tcon); /* Returns with incremented refCount */
2309 /* First try to find the client structure */
2310 for (client = host->FirstClient; client; client = client->next) {
2311 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2312 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2315 ObtainWriteLock(&client->lock);
2321 /* Still no client structure - get one */
2324 if (host->hostFlags & HOSTDELETED) {
2329 /* Retry to find the client structure */
2330 for (client = host->FirstClient; client; client = client->next) {
2331 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2332 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2334 goto retryfirstclient;
2339 ObtainWriteLock(&client->lock);
2340 client->refCount = 1;
2341 client->host = host;
2342 #if FS_STATS_DETAILED
2343 client->InSameNetwork = host->InSameNetwork;
2344 #endif /* FS_STATS_DETAILED */
2345 client->ViceId = viceid;
2346 client->expTime = expTime; /* rx only */
2347 client->authClass = authClass; /* rx only */
2348 client->sid = rxr_CidOf(tcon);
2349 client->VenusEpoch = rxr_GetEpoch(tcon);
2350 client->CPS.prlist_val = NULL;
2351 client->CPS.prlist_len = 0;
2355 client->prfail = fail;
2357 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
2358 client->CPS.prlist_len = 0;
2359 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID))
2360 free(client->CPS.prlist_val);
2361 client->CPS.prlist_val = NULL;
2362 client->ViceId = viceid;
2363 client->expTime = expTime;
2365 if (viceid == ANONYMOUSID) {
2366 client->CPS.prlist_len = AnonCPS.prlist_len;
2367 client->CPS.prlist_val = AnonCPS.prlist_val;
2370 code = hpr_GetCPS(viceid, &client->CPS);
2375 ("pr_GetCPS failed(%d) for user %d, host %" AFS_PTR_FMT " (%s:%d)\n",
2376 code, viceid, client->host,
2377 afs_inet_ntoa_r(client->host->host,hoststr),
2378 ntohs(client->host->port)));
2380 /* Although ubik_Call (called by pr_GetCPS) traverses thru
2381 * all protection servers and reevaluates things if no
2382 * sync server or quorum is found we could still end up
2383 * with one of these errors. In such case we would like to
2384 * reevaluate the rpc call to find if there's cps for this
2385 * guy. We treat other errors (except network failures
2386 * ones - i.e. code < 0) as an indication that there is no
2387 * CPS for this host. Ideally we could like to deal this
2388 * problem the other way around (i.e. if code == NOCPS
2389 * ignore else retry next time) but the problem is that
2390 * there're other errors (i.e. EPERM) for which we don't
2391 * want to retry and we don't know the whole code list!
2393 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
2397 /* the disabling of system:administrators is so iffy and has so many
2398 * possible failure modes that we will disable it again */
2399 /* Turn off System:Administrator for safety
2400 * if (AL_IsAMember(SystemId, client->CPS) == 0)
2401 * assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
2404 /* Now, tcon may already be set to a rock, since we blocked with no host
2405 * or client locks set above in pr_GetCPS (XXXX some locking is probably
2406 * required). So, before setting the RPC's rock, we should disconnect
2407 * the RPC from the other client structure's rock.
2409 oldClient = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2410 if (oldClient && oldClient != client && oldClient->sid == rxr_CidOf(tcon)
2411 && oldClient->VenusEpoch == rxr_GetEpoch(tcon)) {
2413 if (!oldClient->deleted) {
2414 /* if we didn't create it, it's not ours to put back */
2416 ViceLog(0, ("FindClient: stillborn client %p(%x); "
2417 "conn %p (host %s:%d) had client %p(%x)\n",
2418 client, client->sid, tcon,
2419 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2420 ntohs(rxr_PortOf(tcon)),
2421 oldClient, oldClient->sid));
2422 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2423 free(client->CPS.prlist_val);
2424 client->CPS.prlist_val = NULL;
2425 client->CPS.prlist_len = 0;
2427 /* We should perhaps check for 0 here */
2429 ReleaseWriteLock(&client->lock);
2434 oldClient->refCount++;
2436 ObtainWriteLock(&oldClient->lock);
2440 ViceLog(0, ("FindClient: deleted client %p(%x) already had "
2441 "conn %p (host %s:%d), stolen by client %p(%x)\n",
2442 oldClient, oldClient->sid, tcon,
2443 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2444 ntohs(rxr_PortOf(tcon)),
2445 client, client->sid));
2446 /* rx_SetSpecific will be done immediately below */
2449 /* Avoid chaining in more than once. */
2453 if (host->hostFlags & HOSTDELETED) {
2458 client->host = NULL;
2460 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2461 free(client->CPS.prlist_val);
2462 client->CPS.prlist_val = NULL;
2463 client->CPS.prlist_len = 0;
2466 ReleaseWriteLock(&client->lock);
2471 client->next = host->FirstClient;
2472 host->FirstClient = client;
2474 CurrentConnections++; /* increment number of connections */
2476 rx_SetSpecific(tcon, rxcon_client_key, client);
2477 ReleaseWriteLock(&client->lock);
2481 } /*h_FindClient_r */
2484 h_ReleaseClient_r(struct client *client)
2486 assert(client->refCount > 0);
2493 * Sigh: this one is used to get the client AGAIN within the individual
2494 * server routines. This does not bother h_Holding the host, since
2495 * this is assumed already have been done by the server main loop.
2496 * It does check tokens, since only the server routines can return the
2497 * VICETOKENDEAD error code
2500 GetClient(struct rx_connection *tcon, struct client **cp)
2502 register struct client *client;
2507 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2508 if (client == NULL) {
2510 ("GetClient: no client in conn %p (host %s:%d), VBUSYING\n",
2511 tcon, afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2512 ntohs(rxr_PortOf(tcon))));
2516 if (rxr_CidOf(tcon) != client->sid || rxr_GetEpoch(tcon) != client->VenusEpoch) {
2518 ("GetClient: tcon %p tcon sid %d client sid %d\n",
2519 tcon, rxr_CidOf(tcon), client->sid));
2523 if (client && client->LastCall > client->expTime && client->expTime) {
2525 ("Token for %s at %s:%d expired %d\n", h_UserName(client),
2526 afs_inet_ntoa_r(client->host->host, hoststr),
2527 ntohs(client->host->port), client->expTime));
2529 return VICETOKENDEAD;
2539 PutClient(struct client **cp)
2545 h_ReleaseClient_r(*cp);
2552 /* Client user name for short term use. Note that this is NOT inexpensive */
2554 h_UserName(struct client *client)
2556 static char User[PR_MAXNAMELEN + 1];
2560 lids.idlist_len = 1;
2561 lids.idlist_val = (afs_int32 *) malloc(1 * sizeof(afs_int32));
2562 if (!lids.idlist_val) {
2563 ViceLog(0, ("Failed malloc in h_UserName\n"));
2566 lnames.namelist_len = 0;
2567 lnames.namelist_val = (prname *) 0;
2568 lids.idlist_val[0] = client->ViceId;
2569 if (hpr_IdToName(&lids, &lnames)) {
2570 /* We need to free id we alloced above! */
2571 free(lids.idlist_val);
2572 return "*UNKNOWN USER NAME*";
2574 strncpy(User, lnames.namelist_val[0], PR_MAXNAMELEN);
2575 free(lids.idlist_val);
2576 free(lnames.namelist_val);
2585 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
2586 CEs, CEBlocks, HTs, HTBlocks));
2592 h_PrintClient(register struct host *host, int flags, void *rock)
2594 StreamHandle_t *file = (StreamHandle_t *)rock;
2595 register struct client *client;
2600 time_t LastCall, expTime;
2603 LastCall = host->LastCall;
2604 if (host->hostFlags & HOSTDELETED) {
2608 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2609 "Host %s:%d down = %d, LastCall %s",
2610 afs_inet_ntoa_r(host->host, hoststr),
2611 ntohs(host->port), (host->hostFlags & VENUSDOWN),
2612 afs_ctime(&LastCall, tbuffer,
2614 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2615 for (client = host->FirstClient; client; client = client->next) {
2616 if (!client->deleted) {
2617 expTime = client->expTime;
2618 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2619 " user id=%d, name=%s, sl=%s till %s",
2620 client->ViceId, h_UserName(client),
2622 authClass ? "Authenticated" :
2623 "Not authenticated",
2625 authClass ? afs_ctime(&expTime, tbuffer,
2628 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2629 (void)afs_snprintf(tmpStr, sizeof tmpStr, " CPS-%d is [",
2630 client->CPS.prlist_len);
2631 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2632 if (client->CPS.prlist_val) {
2633 for (i = 0; i > client->CPS.prlist_len; i++) {
2634 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
2635 client->CPS.prlist_val[i]);
2636 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2639 sprintf(tmpStr, "]\n");
2640 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2646 } /*h_PrintClient */
2651 * Print a list of clients, with last security level and token value seen,
2655 h_PrintClients(void)
2661 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
2665 ("Couldn't create client dump file %s\n",
2666 AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2669 now = FT_ApproxTime();
2670 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active users at %s\n",
2671 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
2672 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2673 h_Enumerate(h_PrintClient, (char *)file);
2674 STREAM_REALLYCLOSE(file);
2675 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2682 h_DumpHost(register struct host *host, int flags, void *rock)
2684 StreamHandle_t *file = (StreamHandle_t *)rock;
2691 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2692 "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 [",
2693 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port), host->index,
2694 host->cblist, CheckLock(&host->lock), host->LastCall,
2695 host->ActiveCall, (host->hostFlags & VENUSDOWN),
2696 host->hostFlags & HOSTDELETED, host->Console,
2697 host->hostFlags & CLIENTDELETED, host->hcpsfailed,
2699 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2700 if (host->hcps.prlist_val)
2701 for (i = 0; i < host->hcps.prlist_len; i++) {
2702 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
2703 host->hcps.prlist_val[i]);
2704 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2706 sprintf(tmpStr, "] [");
2707 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2708 if (host->interface)
2709 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
2711 sprintf(tmpStr, " %s:%d",
2712 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
2713 ntohs(host->interface->interface[i].port));
2714 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2716 sprintf(tmpStr, "] refCount:%d hostFlags:%hu\n", host->refCount, host->hostFlags);
2717 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2729 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
2735 ("Couldn't create host dump file %s\n",
2736 AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2739 now = FT_ApproxTime();
2740 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active hosts at %s\n",
2741 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
2742 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2743 h_Enumerate(h_DumpHost, (char *)file);
2744 STREAM_REALLYCLOSE(file);
2745 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2749 #ifdef AFS_DEMAND_ATTACH_FS
2752 * host state serialization
2754 static int h_stateFillHeader(struct host_state_header * hdr);
2755 static int h_stateCheckHeader(struct host_state_header * hdr);
2756 static int h_stateAllocMap(struct fs_dump_state * state);
2757 static int h_stateSaveHost(struct host * host, int flags, void *rock);
2758 static int h_stateRestoreHost(struct fs_dump_state * state);
2759 static int h_stateRestoreIndex(struct host * h, int flags, void *rock);
2760 static int h_stateVerifyHost(struct host * h, int flags, void *rock);
2761 static int h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h, afs_uint32 addr, afs_uint16 port);
2762 static int h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h);
2763 static void h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out);
2764 static void h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out);
2767 /* this procedure saves all host state to disk for fast startup */
2769 h_stateSave(struct fs_dump_state * state)
2771 AssignInt64(state->eof_offset, &state->hdr->h_offset);
2774 ViceLog(0, ("h_stateSave: hostCount=%d\n", hostCount));
2776 /* invalidate host state header */
2777 memset(state->h_hdr, 0, sizeof(struct host_state_header));
2779 if (fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2780 sizeof(struct host_state_header))) {
2785 fs_stateIncEOF(state, sizeof(struct host_state_header));
2787 h_Enumerate_r(h_stateSaveHost, hostList, (char *)state);
2792 h_stateFillHeader(state->h_hdr);
2794 /* write the real header to disk */
2795 state->bail = fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2796 sizeof(struct host_state_header));
2803 * host state serialization
2805 * this procedure restores all host state from a disk for fast startup
2808 h_stateRestore(struct fs_dump_state * state)
2812 /* seek to the right position and read in the host state header */
2813 if (fs_stateReadHeader(state, &state->hdr->h_offset, state->h_hdr,
2814 sizeof(struct host_state_header))) {
2819 /* check the validity of the header */
2820 if (h_stateCheckHeader(state->h_hdr)) {
2825 records = state->h_hdr->records;
2827 if (h_stateAllocMap(state)) {
2832 /* iterate over records restoring host state */
2833 for (i=0; i < records; i++) {
2834 if (h_stateRestoreHost(state) != 0) {
2845 h_stateRestoreIndices(struct fs_dump_state * state)
2847 h_Enumerate_r(h_stateRestoreIndex, hostList, (char *)state);
2852 h_stateRestoreIndex(struct host * h, int flags, void *rock)
2854 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2855 if (cb_OldToNew(state, h->cblist, &h->cblist)) {
2856 return H_ENUMERATE_BAIL(flags);
2862 h_stateVerify(struct fs_dump_state * state)
2864 h_Enumerate_r(h_stateVerifyHost, hostList, (char *)state);
2869 h_stateVerifyHost(struct host * h, int flags, void* rock)
2871 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2875 ViceLog(0, ("h_stateVerifyHost: error: NULL host pointer in linked list\n"));
2876 return H_ENUMERATE_BAIL(flags);
2880 for (i = h->interface->numberOfInterfaces-1; i >= 0; i--) {
2881 if (h_stateVerifyAddrHash(state, h, h->interface->interface[i].addr,
2882 h->interface->interface[i].port)) {
2886 if (h_stateVerifyUuidHash(state, h)) {
2889 } else if (h_stateVerifyAddrHash(state, h, h->host, h->port)) {
2893 if (cb_stateVerifyHCBList(state, h)) {
2901 h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h, afs_uint32 addr, afs_uint16 port)
2903 int ret = 0, found = 0;
2904 struct host *host = NULL;
2905 struct h_AddrHashChain *chain;
2906 int index = h_HashIndex(addr);
2910 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
2911 host = chain->hostPtr;
2913 afs_inet_ntoa_r(addr, tmp);
2914 ViceLog(0, ("h_stateVerifyAddrHash: error: addr hash chain has NULL host ptr (lookup addr %s)\n", tmp));
2918 if ((chain->addr == addr) && (chain->port == port)) {
2920 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr hash entry points to different host struct (%d, %d)\n",
2921 h->index, host->index));
2922 state->flags.warnings_generated = 1;
2927 if (chain_len > FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN) {
2928 ViceLog(0, ("h_stateVerifyAddrHash: error: hash chain length exceeds %d; assuming there's a loop\n",
2929 FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN));
2937 afs_inet_ntoa_r(addr, tmp);
2938 if (state->mode == FS_STATE_LOAD_MODE) {
2939 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s not found in hash\n", tmp));
2943 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr %s not found in hash\n", tmp));
2944 state->flags.warnings_generated = 1;
2953 h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h)
2955 int ret = 0, found = 0;
2956 struct host *host = NULL;
2957 struct h_UuidHashChain *chain;
2958 afsUUID * uuidp = &h->interface->uuid;
2959 int index = h_UuidHashIndex(uuidp);
2963 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
2964 host = chain->hostPtr;
2966 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
2967 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid hash chain has NULL host ptr (lookup uuid %s)\n", tmp));
2971 if (host->interface &&
2972 afs_uuid_equal(&host->interface->uuid, uuidp)) {
2974 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid hash entry points to different host struct (%d, %d)\n",
2975 h->index, host->index));
2976 state->flags.warnings_generated = 1;
2981 if (chain_len > FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN) {
2982 ViceLog(0, ("h_stateVerifyUuidHash: error: hash chain length exceeds %d; assuming there's a loop\n",
2983 FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN));
2991 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
2992 if (state->mode == FS_STATE_LOAD_MODE) {
2993 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid %s not found in hash\n", tmp));
2997 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid %s not found in hash\n", tmp));
2998 state->flags.warnings_generated = 1;
3006 /* create the host state header structure */
3008 h_stateFillHeader(struct host_state_header * hdr)
3010 hdr->stamp.magic = HOST_STATE_MAGIC;
3011 hdr->stamp.version = HOST_STATE_VERSION;
3015 /* check the contents of the host state header structure */
3017 h_stateCheckHeader(struct host_state_header * hdr)
3021 if (hdr->stamp.magic != HOST_STATE_MAGIC) {
3022 ViceLog(0, ("check_host_state_header: invalid state header\n"));
3025 else if (hdr->stamp.version != HOST_STATE_VERSION) {
3026 ViceLog(0, ("check_host_state_header: unknown version number\n"));
3032 /* allocate the host id mapping table */
3034 h_stateAllocMap(struct fs_dump_state * state)
3036 state->h_map.len = state->h_hdr->index_max + 1;
3037 state->h_map.entries = (struct idx_map_entry_t *)
3038 calloc(state->h_map.len, sizeof(struct idx_map_entry_t));
3039 return (state->h_map.entries != NULL) ? 0 : 1;
3042 /* function called by h_Enumerate to save a host to disk */
3044 h_stateSaveHost(struct host * host, int flags, void* rock)
3046 struct fs_dump_state *state = (struct fs_dump_state *) rock;
3047 int if_len=0, hcps_len=0;
3048 struct hostDiskEntry hdsk;
3049 struct host_state_entry_header hdr;
3050 struct Interface * ifp = NULL;
3051 afs_int32 * hcps = NULL;
3052 struct iovec iov[4];
3055 memset(&hdr, 0, sizeof(hdr));
3057 if (state->h_hdr->index_max < host->index) {
3058 state->h_hdr->index_max = host->index;
3061 h_hostToDiskEntry_r(host, &hdsk);
3062 if (host->interface) {
3063 if_len = sizeof(struct Interface) +
3064 ((host->interface->numberOfInterfaces-1) * sizeof(struct AddrPort));
3065 ifp = (struct Interface *) malloc(if_len);
3066 assert(ifp != NULL);
3067 memcpy(ifp, host->interface, if_len);
3068 hdr.interfaces = host->interface->numberOfInterfaces;
3069 iov[iovcnt].iov_base = (char *) ifp;
3070 iov[iovcnt].iov_len = if_len;
3073 if (host->hcps.prlist_val) {
3074 hdr.hcps = host->hcps.prlist_len;
3075 hcps_len = hdr.hcps * sizeof(afs_int32);
3076 hcps = (afs_int32 *) malloc(hcps_len);
3077 assert(hcps != NULL);
3078 memcpy(hcps, host->hcps.prlist_val, hcps_len);
3079 iov[iovcnt].iov_base = (char *) hcps;
3080 iov[iovcnt].iov_len = hcps_len;
3084 if (hdsk.index > state->h_hdr->index_max)
3085 state->h_hdr->index_max = hdsk.index;
3087 hdr.len = sizeof(struct host_state_entry_header) +
3088 sizeof(struct hostDiskEntry) + if_len + hcps_len;
3089 hdr.magic = HOST_STATE_ENTRY_MAGIC;
3091 iov[0].iov_base = (char *) &hdr;
3092 iov[0].iov_len = sizeof(hdr);
3093 iov[1].iov_base = (char *) &hdsk;
3094 iov[1].iov_len = sizeof(struct hostDiskEntry);
3096 if (fs_stateWriteV(state, iov, iovcnt)) {
3097 ViceLog(0, ("h_stateSaveHost: failed to save host %d", host->index));
3101 fs_stateIncEOF(state, hdr.len);
3103 state->h_hdr->records++;
3110 return H_ENUMERATE_BAIL(flags);
3115 /* restores a host from disk */
3117 h_stateRestoreHost(struct fs_dump_state * state)
3119 int ifp_len=0, hcps_len=0, bail=0;
3120 struct host_state_entry_header hdr;
3121 struct hostDiskEntry hdsk;
3122 struct host *host = NULL;
3123 struct Interface *ifp = NULL;
3124 afs_int32 * hcps = NULL;
3125 struct iovec iov[3];
3128 if (fs_stateRead(state, &hdr, sizeof(hdr))) {
3129 ViceLog(0, ("h_stateRestoreHost: failed to read host entry header from dump file '%s'\n",
3135 if (hdr.magic != HOST_STATE_ENTRY_MAGIC) {
3136 ViceLog(0, ("h_stateRestoreHost: fileserver state dump file '%s' is corrupt.\n",
3142 iov[0].iov_base = (char *) &hdsk;
3143 iov[0].iov_len = sizeof(struct hostDiskEntry);
3145 if (hdr.interfaces) {
3146 ifp_len = sizeof(struct Interface) +
3147 ((hdr.interfaces-1) * sizeof(struct AddrPort));
3148 ifp = (struct Interface *) malloc(ifp_len);
3149 assert(ifp != NULL);
3150 iov[iovcnt].iov_base = (char *) ifp;
3151 iov[iovcnt].iov_len = ifp_len;
3155 hcps_len = hdr.hcps * sizeof(afs_int32);
3156 hcps = (afs_int32 *) malloc(hcps_len);
3157 assert(hcps != NULL);
3158 iov[iovcnt].iov_base = (char *) hcps;
3159 iov[iovcnt].iov_len = hcps_len;
3163 if ((ifp_len + hcps_len + sizeof(hdsk) + sizeof(hdr)) != hdr.len) {
3164 ViceLog(0, ("h_stateRestoreHost: host entry header length fields are inconsistent\n"));
3169 if (fs_stateReadV(state, iov, iovcnt)) {
3170 ViceLog(0, ("h_stateRestoreHost: failed to read host entry\n"));
3175 if (!hdr.hcps && hdsk.hcps_valid) {
3176 /* valid, zero-length host cps ; does this ever happen? */
3177 hcps = (afs_int32 *) malloc(sizeof(afs_int32));
3178 assert(hcps != NULL);
3182 assert(host != NULL);
3185 host->interface = ifp;
3188 host->hcps.prlist_val = hcps;
3189 host->hcps.prlist_len = hdr.hcps;
3192 h_diskEntryToHost_r(&hdsk, host);
3193 h_SetupCallbackConn_r(host);
3195 h_AddHostToAddrHashTable_r(host->host, host->port, host);
3198 for (i = ifp->numberOfInterfaces-1; i >= 0; i--) {
3199 if (ifp->interface[i].valid &&
3200 !(ifp->interface[i].addr == host->host &&
3201 ifp->interface[i].port == host->port)) {
3202 h_AddHostToAddrHashTable_r(ifp->interface[i].addr,
3203 ifp->interface[i].port,
3207 h_AddHostToUuidHashTable_r(&ifp->uuid, host);
3209 h_InsertList_r(host);
3211 /* setup host id map entry */
3212 state->h_map.entries[hdsk.index].old_idx = hdsk.index;
3213 state->h_map.entries[hdsk.index].new_idx = host->index;
3225 /* serialize a host structure to disk */
3227 h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out)
3229 out->host = in->host;
3230 out->port = in->port;
3231 out->hostFlags = in->hostFlags;
3232 out->Console = in->Console;
3233 out->hcpsfailed = in->hcpsfailed;
3234 out->LastCall = in->LastCall;
3235 out->ActiveCall = in->ActiveCall;
3236 out->cpsCall = in->cpsCall;
3237 out->cblist = in->cblist;
3238 #ifdef FS_STATS_DETAILED
3239 out->InSameNetwork = in->InSameNetwork;
3242 /* special fields we save, but are not memcpy'd back on restore */
3243 out->index = in->index;
3244 out->hcps_len = in->hcps.prlist_len;
3245 out->hcps_valid = (in->hcps.prlist_val == NULL) ? 0 : 1;
3248 /* restore a host structure from disk */
3250 h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out)
3252 out->host = in->host;
3253 out->port = in->port;
3254 out->hostFlags = in->hostFlags;
3255 out->Console = in->Console;
3256 out->hcpsfailed = in->hcpsfailed;
3257 out->LastCall = in->LastCall;
3258 out->ActiveCall = in->ActiveCall;
3259 out->cpsCall = in->cpsCall;
3260 out->cblist = in->cblist;
3261 #ifdef FS_STATS_DETAILED
3262 out->InSameNetwork = in->InSameNetwork;
3266 /* index translation routines */
3268 h_OldToNew(struct fs_dump_state * state, afs_uint32 old, afs_uint32 * new)
3272 /* hosts use a zero-based index, so old==0 is valid */
3274 if (old >= state->h_map.len) {
3275 ViceLog(0, ("h_OldToNew: index %d is out of range\n", old));
3277 } else if (state->h_map.entries[old].old_idx != old) { /* sanity check */
3278 ViceLog(0, ("h_OldToNew: index %d points to an invalid host record\n", old));
3281 *new = state->h_map.entries[old].new_idx;
3286 #endif /* AFS_DEMAND_ATTACH_FS */
3290 * This counts the number of workstations, the number of active workstations,
3291 * and the number of workstations declared "down" (i.e. not heard from
3292 * recently). An active workstation has received a call since the cutoff
3293 * time argument passed.
3296 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
3298 register struct host *host;
3299 register int num = 0, active = 0, del = 0;
3303 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
3304 if (!(host->hostFlags & HOSTDELETED)) {
3306 if (host->ActiveCall > cutofftime)
3308 if (host->hostFlags & VENUSDOWN)
3312 if (count != hostCount) {
3313 ViceLog(0, ("h_GetWorkStats found %d of %d hosts\n", count, hostCount));
3314 } else if (host != NULL) {
3315 ViceLog(0, ("h_GetWorkStats found more than %d hosts\n", hostCount));
3316 ShutDownAndCore(PANIC);
3326 } /*h_GetWorkStats */
3329 /*------------------------------------------------------------------------
3330 * PRIVATE h_ClassifyAddress
3333 * Given a target IP address and a candidate IP address (both
3334 * in host byte order), classify the candidate into one of three
3335 * buckets in relation to the target by bumping the counters passed
3339 * a_targetAddr : Target address.
3340 * a_candAddr : Candidate address.
3341 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
3342 * addresses are either in the same network
3343 * or the same subnet.
3344 * a_diffSubnetP : ...when the candidate is in a different
3346 * a_diffNetworkP : ...when the candidate is in a different
3353 * The target and candidate addresses are both in host byte
3354 * order, NOT network byte order, when passed in.
3358 *------------------------------------------------------------------------*/
3361 h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
3362 afs_int32 * a_sameNetOrSubnetP, afs_int32 * a_diffSubnetP,
3363 afs_int32 * a_diffNetworkP)
3364 { /*h_ClassifyAddress */
3366 afs_uint32 targetNet;
3367 afs_uint32 targetSubnet;
3369 afs_uint32 candSubnet;
3372 * Put bad values into the subnet info to start with.
3374 targetSubnet = (afs_uint32) 0;
3375 candSubnet = (afs_uint32) 0;
3378 * Pull out the network and subnetwork numbers from the target
3379 * and candidate addresses. We can short-circuit this whole
3380 * affair if the target and candidate addresses are not of the
3383 if (IN_CLASSA(a_targetAddr)) {
3384 if (!(IN_CLASSA(a_candAddr))) {
3385 (*a_diffNetworkP)++;
3388 targetNet = a_targetAddr & IN_CLASSA_NET;
3389 candNet = a_candAddr & IN_CLASSA_NET;
3390 if (IN_SUBNETA(a_targetAddr))
3391 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
3392 if (IN_SUBNETA(a_candAddr))
3393 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
3394 } else if (IN_CLASSB(a_targetAddr)) {
3395 if (!(IN_CLASSB(a_candAddr))) {
3396 (*a_diffNetworkP)++;
3399 targetNet = a_targetAddr & IN_CLASSB_NET;
3400 candNet = a_candAddr & IN_CLASSB_NET;
3401 if (IN_SUBNETB(a_targetAddr))
3402 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
3403 if (IN_SUBNETB(a_candAddr))
3404 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
3405 } /*Class B target */
3406 else if (IN_CLASSC(a_targetAddr)) {
3407 if (!(IN_CLASSC(a_candAddr))) {
3408 (*a_diffNetworkP)++;
3411 targetNet = a_targetAddr & IN_CLASSC_NET;
3412 candNet = a_candAddr & IN_CLASSC_NET;
3415 * Note that class C addresses can't have subnets,
3416 * so we leave the defaults untouched.
3418 } /*Class C target */
3420 targetNet = a_targetAddr;
3421 candNet = a_candAddr;
3422 } /*Class D address */
3425 * Now, simply compare the extracted net and subnet values for
3426 * the two addresses (which at this point are known to be of the
3429 if (targetNet == candNet) {
3430 if (targetSubnet == candSubnet)
3431 (*a_sameNetOrSubnetP)++;
3435 (*a_diffNetworkP)++;
3437 } /*h_ClassifyAddress */
3440 /*------------------------------------------------------------------------
3441 * EXPORTED h_GetHostNetStats
3444 * Iterate through the host table, and classify each (non-deleted)
3445 * host entry into ``proximity'' categories (same net or subnet,
3446 * different subnet, different network).
3449 * a_numHostsP : Set to total number of (non-deleted) hosts.
3450 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
3451 * a_diffSubnetP : Set to # hosts on diff subnet as server.
3452 * a_diffNetworkP : Set to # hosts on diff network as server.
3458 * We only count non-deleted hosts. The storage pointed to by our
3459 * parameters is zeroed upon entry.
3463 *------------------------------------------------------------------------*/
3466 h_GetHostNetStats(afs_int32 * a_numHostsP, afs_int32 * a_sameNetOrSubnetP,
3467 afs_int32 * a_diffSubnetP, afs_int32 * a_diffNetworkP)
3468 { /*h_GetHostNetStats */
3470 register struct host *hostP; /*Ptr to current host entry */
3471 register afs_uint32 currAddr_HBO; /*Curr host addr, host byte order */
3475 * Clear out the storage pointed to by our parameters.
3477 *a_numHostsP = (afs_int32) 0;
3478 *a_sameNetOrSubnetP = (afs_int32) 0;
3479 *a_diffSubnetP = (afs_int32) 0;
3480 *a_diffNetworkP = (afs_int32) 0;
3483 for (count = 0, hostP = hostList; hostP && count < hostCount; hostP = hostP->next, count++) {
3484 if (!(hostP->hostFlags & HOSTDELETED)) {
3486 * Bump the number of undeleted host entries found.
3487 * In classifying the current entry's address, make
3488 * sure to first convert to host byte order.
3491 currAddr_HBO = (afs_uint32) ntohl(hostP->host);
3492 h_ClassifyAddress(FS_HostAddr_HBO, currAddr_HBO,
3493 a_sameNetOrSubnetP, a_diffSubnetP,
3495 } /*Only look at non-deleted hosts */
3496 } /*For each host record hashed to this index */
3497 if (count != hostCount) {
3498 ViceLog(0, ("h_GetHostNetStats found %d of %d hosts\n", count, hostCount));
3499 } else if (hostP != NULL) {
3500 ViceLog(0, ("h_GetHostNetStats found more than %d hosts\n", hostCount));
3501 ShutDownAndCore(PANIC);
3504 } /*h_GetHostNetStats */
3506 static afs_uint32 checktime;
3507 static afs_uint32 clientdeletetime;
3508 static struct AFSFid zerofid;
3512 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
3513 * Since it can serialize them, and pile up, it should be a separate LWP
3514 * from other events.
3518 CheckHost(register struct host *host, int flags, void *rock)
3520 register struct client *client;
3521 struct rx_connection *cb_conn = NULL;
3524 #ifdef AFS_DEMAND_ATTACH_FS
3525 /* kill the checkhost lwp ASAP during shutdown */
3527 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3529 return H_ENUMERATE_BAIL(flags);
3534 /* Host is held by h_Enumerate */
3536 for (client = host->FirstClient; client; client = client->next) {
3537 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3538 client->deleted = 1;
3539 host->hostFlags |= CLIENTDELETED;
3542 if (host->LastCall < checktime) {
3544 if (!(host->hostFlags & HOSTDELETED)) {
3545 host->hostFlags |= HWHO_INPROGRESS;
3546 cb_conn = host->callback_rxcon;
3547 rx_GetConnection(cb_conn);
3548 if (host->LastCall < clientdeletetime) {
3549 host->hostFlags |= HOSTDELETED;
3550 if (!(host->hostFlags & VENUSDOWN)) {
3551 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3552 if (host->interface) {
3555 RXAFSCB_InitCallBackState3(cb_conn,
3561 RXAFSCB_InitCallBackState(cb_conn);
3564 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3567 (void)afs_inet_ntoa_r(host->host, hoststr);
3569 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3570 hoststr, ntohs(host->port)));
3571 host->hostFlags |= VENUSDOWN;
3573 /* Note: it's safe to delete hosts even if they have call
3574 * back state, because break delayed callbacks (called when a
3575 * message is received from the workstation) will always send a
3576 * break all call backs to the workstation if there is no
3581 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3583 (void)afs_inet_ntoa_r(host->host, hoststr);
3584 if (host->interface) {
3585 afsUUID uuid = host->interface->uuid;
3587 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3590 if (MultiProbeAlternateAddress_r(host)) {
3591 ViceLog(0,("CheckHost: Probing all interfaces of host %s:%d failed, code %d\n",
3592 hoststr, ntohs(host->port), code));
3593 host->hostFlags |= VENUSDOWN;
3598 code = RXAFSCB_Probe(cb_conn);
3602 ("CheckHost: Probe failed for host %s:%d, code %d\n",
3603 hoststr, ntohs(host->port), code));
3604 host->hostFlags |= VENUSDOWN;
3610 rx_PutConnection(cb_conn);
3613 host->hostFlags &= ~HWHO_INPROGRESS;
3624 CheckHost_r(register struct host *host, int flags, void *dummy)
3626 register struct client *client;
3627 struct rx_connection *cb_conn = NULL;
3630 #ifdef AFS_DEMAND_ATTACH_FS
3631 /* kill the checkhost lwp ASAP during shutdown */
3633 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3635 return H_ENUMERATE_BAIL(flags);
3640 /* Host is held by h_Enumerate_r */
3641 for (client = host->FirstClient; client; client = client->next) {
3642 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3643 client->deleted = 1;
3644 host->hostFlags |= CLIENTDELETED;
3647 if (host->LastCall < checktime) {
3649 if (!(host->hostFlags & HOSTDELETED)) {
3650 cb_conn = host->callback_rxcon;
3651 rx_GetConnection(cb_conn);
3652 if (host->LastCall < clientdeletetime) {
3653 host->hostFlags |= HOSTDELETED;
3654 if (!(host->hostFlags & VENUSDOWN)) {
3655 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3656 if (host->interface) {
3659 RXAFSCB_InitCallBackState3(cb_conn,
3665 RXAFSCB_InitCallBackState(cb_conn);
3668 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3671 (void)afs_inet_ntoa_r(host->host, hoststr);
3673 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3674 hoststr, ntohs(host->port)));
3675 host->hostFlags |= VENUSDOWN;
3677 /* Note: it's safe to delete hosts even if they have call
3678 * back state, because break delayed callbacks (called when a
3679 * message is received from the workstation) will always send a
3680 * break all call backs to the workstation if there is no
3685 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3687 (void)afs_inet_ntoa_r(host->host, hoststr);
3688 if (host->interface) {
3689 afsUUID uuid = host->interface->uuid;
3691 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3694 if (MultiProbeAlternateAddress_r(host)) {
3695 ViceLog(0,("CheckHost_r: Probing all interfaces of host %s:%d failed, code %d\n",
3696 hoststr, ntohs(host->port), code));
3697 host->hostFlags |= VENUSDOWN;
3702 code = RXAFSCB_Probe(cb_conn);
3706 ("CheckHost_r: Probe failed for host %s:%d, code %d\n",
3707 hoststr, ntohs(host->port), code));
3708 host->hostFlags |= VENUSDOWN;
3714 rx_PutConnection(cb_conn);
3726 * Set VenusDown for any hosts that have not had a call in 15 minutes and
3727 * don't respond to a probe. Note that VenusDown can only be cleared if
3728 * a message is received from the host (see ServerLWP in file.c).
3729 * Delete hosts that have not had any calls in 1 hour, clients that
3730 * have not had any calls in 15 minutes.
3732 * This routine is called roughly every 5 minutes.
3737 afs_uint32 now = FT_ApproxTime();
3739 memset(&zerofid, 0, sizeof(zerofid));
3741 * Send a probe to the workstation if it hasn't been heard from in
3744 checktime = now - 15 * 60;
3745 clientdeletetime = now - 120 * 60; /* 2 hours ago */
3748 h_Enumerate_r(CheckHost_r, hostList, NULL);
3753 * This is called with host locked and held. At this point, the
3754 * hostAddrHashTable has an entry for the primary addr/port inserted
3755 * by h_Alloc_r(). No other interfaces should be considered valid.
3757 * The addresses in the interfaceAddr list are in host byte order.
3760 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
3767 struct Interface *interface;
3770 afs_uint16 port7001 = htons(7001);
3775 number = interf->numberOfInterfaces;
3776 myAddr = host->host; /* current interface address */
3777 myPort = host->port; /* current port */
3780 ("initInterfaceAddr : host %s:%d numAddr %d\n",
3781 afs_inet_ntoa_r(myAddr, hoststr), ntohs(myPort), number));
3783 /* validation checks */
3784 if (number < 0 || number > AFS_MAX_INTERFACE_ADDR) {
3786 ("Invalid number of alternate addresses is %d\n", number));
3791 * The client's notion of its own IP addresses is not reliable.
3793 * 1. The client list might contain private address ranges which
3794 * are likely to be re-used by many clients allocated addresses
3797 * 2. The client list will not include any public addresses that
3798 * are hidden by a NAT.
3800 * 3. Private address ranges that are exposed to the server will
3801 * be obtained from the rx connections that use them.
3803 * 4. Lists provided by the client are not necessarily truthful.
3804 * Many existing clients (UNIX) do not refresh the IP address
3805 * list as the actual assigned addresses change. The end result
3806 * is that they report the initial address list for the lifetime
3807 * of the process. In other words, a client can report addresses
3808 * that they are in fact not using. Adding these addresses to
3809 * the host interface list without verification is not only
3810 * pointless, it is downright dangerous.
3812 * We therefore do not add alternate addresses to the addr hash table.
3813 * We only use them for multi-rx callback breaks.
3817 * Convert IP addresses to network byte order, and remove
3818 * duplicate IP addresses from the interface list, and
3819 * determine whether or not the incoming addr/port is
3820 * listed. Note that if the address matches it is not
3821 * truly a match because the port number for the entries
3822 * in the interface list are port 7001 and the port number
3823 * for this connection might not be 7001.
3825 for (i = 0, count = 0, found = 0; i < number; i++) {
3826 interf->addr_in[i] = htonl(interf->addr_in[i]);
3827 for (j = 0; j < count; j++) {
3828 if (interf->addr_in[j] == interf->addr_in[i])
3832 interf->addr_in[count] = interf->addr_in[i];
3833 if (interf->addr_in[count] == myAddr &&
3841 * Allocate and initialize an interface structure for this host.
3844 interface = (struct Interface *)
3845 malloc(sizeof(struct Interface) +
3846 (sizeof(struct AddrPort) * (count - 1)));
3848 ViceLog(0, ("Failed malloc in initInterfaceAddr_r 1\n"));
3851 interface->numberOfInterfaces = count;
3853 interface = (struct Interface *)
3854 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * count));
3856 ViceLog(0, ("Failed malloc in initInterfaceAddr_r 2\n"));
3859 interface->numberOfInterfaces = count + 1;
3860 interface->interface[count].addr = myAddr;
3861 interface->interface[count].port = myPort;
3862 interface->interface[count].valid = 1;
3865 for (i = 0; i < count; i++) {
3867 interface->interface[i].addr = interf->addr_in[i];
3868 /* We store the port as 7001 because the addresses reported by
3869 * TellMeAboutYourself and WhoAreYou RPCs are only valid if they
3870 * are coming from fully connected hosts (no NAT/PATs)
3872 interface->interface[i].port = port7001;
3873 interface->interface[i].valid =
3874 (interf->addr_in[i] == myAddr && port7001 == myPort) ? 1 : 0;
3877 interface->uuid = interf->uuid;
3879 assert(!host->interface);
3880 host->interface = interface;
3882 if (LogLevel >= 125) {
3883 afsUUID_to_string(&interface->uuid, uuidstr, 127);
3885 ViceLog(125, ("--- uuid %s\n", uuidstr));
3886 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
3887 ViceLog(125, ("--- alt address %s:%d\n",
3888 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
3889 ntohs(host->interface->interface[i].port)));
3896 /* deleted a HashChain structure for this address and host */
3897 /* returns 1 on success */
3899 h_DeleteHostFromAddrHashTable_r(afs_uint32 addr, afs_uint16 port,
3903 register struct h_AddrHashChain **hp, *th;
3905 if (addr == 0 && port == 0)
3908 for (hp = &hostAddrHashTable[h_HashIndex(addr)]; (th = *hp);
3910 assert(th->hostPtr);
3911 if (th->hostPtr == host && th->addr == addr && th->port == port) {
3912 ViceLog(125, ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d)\n",
3913 host, afs_inet_ntoa_r(host->host, hoststr),
3914 ntohs(host->port)));
3921 ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) not found\n",
3922 host, afs_inet_ntoa_r(host->host, hoststr),
3923 ntohs(host->port)));
3929 ** prints out all alternate interface address for the host. The 'level'
3930 ** parameter indicates what level of debugging sets this output
3933 printInterfaceAddr(struct host *host, int level)
3938 if (host->interface) {
3939 /* check alternate addresses */
3940 number = host->interface->numberOfInterfaces;
3942 ViceLog(level, ("no-addresses "));
3944 for (i = 0; i < number; i++)
3945 ViceLog(level, ("%s:%d ", afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
3946 ntohs(host->interface->interface[i].port)));
3949 ViceLog(level, ("\n"));