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>
27 #include <netinet/in.h>
32 #include <afs/assert.h>
35 #include <afs/afsint.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);
91 #define CESPERBLOCK 73
92 struct CEBlock { /* block of CESPERBLOCK file entries */
93 struct client entry[CESPERBLOCK];
96 static void h_TossStuff_r(register struct host *host);
99 * Make sure the subnet macros have been defined.
102 #define IN_SUBNETA(i) ((((afs_int32)(i))&0x80800000)==0x00800000)
105 #ifndef IN_CLASSA_SUBNET
106 #define IN_CLASSA_SUBNET 0xffff0000
110 #define IN_SUBNETB(i) ((((afs_int32)(i))&0xc0008000)==0x80008000)
113 #ifndef IN_CLASSB_SUBNET
114 #define IN_CLASSB_SUBNET 0xffffff00
118 /* get a new block of CEs and chain it on CEFree */
122 register struct CEBlock *block;
125 block = (struct CEBlock *)malloc(sizeof(struct CEBlock));
127 ViceLog(0, ("Failed malloc in GetCEBlock\n"));
128 ShutDownAndCore(PANIC);
131 for (i = 0; i < (CESPERBLOCK - 1); i++) {
132 Lock_Init(&block->entry[i].lock);
133 block->entry[i].next = &(block->entry[i + 1]);
135 block->entry[CESPERBLOCK - 1].next = 0;
136 Lock_Init(&block->entry[CESPERBLOCK - 1].lock);
137 CEFree = (struct client *)block;
143 /* get the next available CE */
144 static struct client *
147 register struct client *entry;
152 ViceLog(0, ("CEFree NULL in GetCE\n"));
153 ShutDownAndCore(PANIC);
157 CEFree = entry->next;
159 memset((char *)entry, 0, CLIENT_TO_ZERO(entry));
165 /* return an entry to the free list */
167 FreeCE(register struct client *entry)
169 entry->VenusEpoch = 0;
171 entry->next = CEFree;
178 * The HTs and HTBlocks variables were formerly static, but they are
179 * now referenced elsewhere in the FileServer.
181 int HTs = 0; /* active file entries */
182 int HTBlocks = 0; /* number of blocks of HTs */
183 static struct host *HTFree = 0; /* first free file entry */
186 * Hash tables of host pointers. We need two tables, one
187 * to map IP addresses onto host pointers, and another
188 * to map host UUIDs onto host pointers.
190 static struct h_AddrHashChain *hostAddrHashTable[h_HASHENTRIES];
191 static struct h_UuidHashChain *hostUuidHashTable[h_HASHENTRIES];
192 #define h_HashIndex(hostip) ((hostip) & (h_HASHENTRIES-1))
193 #define h_UuidHashIndex(uuidp) (((int)(afs_uuid_hash(uuidp))) & (h_HASHENTRIES-1))
195 struct HTBlock { /* block of HTSPERBLOCK file entries */
196 struct host entry[h_HTSPERBLOCK];
200 /* get a new block of HTs and chain it on HTFree */
204 register struct HTBlock *block;
206 static int index = 0;
208 if (HTBlocks == h_MAXHOSTTABLES) {
209 ViceLog(0, ("h_MAXHOSTTABLES reached\n"));
210 ShutDownAndCore(PANIC);
213 block = (struct HTBlock *)malloc(sizeof(struct HTBlock));
215 ViceLog(0, ("Failed malloc in GetHTBlock\n"));
216 ShutDownAndCore(PANIC);
218 #ifdef AFS_PTHREAD_ENV
219 for (i = 0; i < (h_HTSPERBLOCK); i++)
220 assert(pthread_cond_init(&block->entry[i].cond, NULL) == 0);
221 #endif /* AFS_PTHREAD_ENV */
222 for (i = 0; i < (h_HTSPERBLOCK); i++)
223 Lock_Init(&block->entry[i].lock);
224 for (i = 0; i < (h_HTSPERBLOCK - 1); i++)
225 block->entry[i].next = &(block->entry[i + 1]);
226 for (i = 0; i < (h_HTSPERBLOCK); i++)
227 block->entry[i].index = index++;
228 block->entry[h_HTSPERBLOCK - 1].next = 0;
229 HTFree = (struct host *)block;
230 hosttableptrs[HTBlocks++] = block->entry;
235 /* get the next available HT */
239 register struct host *entry;
243 assert(HTFree != NULL);
245 HTFree = entry->next;
247 memset((char *)entry, 0, HOST_TO_ZERO(entry));
253 /* return an entry to the free list */
255 FreeHT(register struct host *entry)
257 entry->next = HTFree;
264 hpr_Initialize(struct ubik_client **uclient)
267 struct rx_connection *serverconns[MAXSERVERS];
268 struct rx_securityClass *sc[3];
269 struct afsconf_dir *tdir;
270 char tconfDir[100] = "";
272 struct ktc_token ttoken;
274 struct afsconf_cell info;
278 tdir = afsconf_Open(AFSDIR_SERVER_ETC_DIRPATH);
280 ViceLog(0, ("hpr_Initialize: Could not open configuration directory: %s", AFSDIR_SERVER_ETC_DIRPATH));
284 code = afsconf_GetLocalCell(tdir, cellstr, sizeof(cellstr));
286 ViceLog(0, ("hpr_Initialize: Could not get local cell. [%d]", code));
291 code = afsconf_GetCellInfo(tdir, cellstr, "afsprot", &info);
293 ViceLog(0, ("hpr_Initialize: Could not locate cell %s in %s/%s", cellstr, confDir, AFSDIR_CELLSERVDB_FILE));
300 ViceLog(0, ("hpr_Initialize: Could not initialize rx."));
309 /* Most callers use secLevel==1, however, the fileserver uses secLevel==2
310 * to force use of the KeyFile. secLevel == 0 implies -noauth was
312 if ((afsconf_GetLatestKey(tdir, 0, 0) == 0)) {
313 code = afsconf_ClientAuthSecure(tdir, &sc[2], &scIndex);
315 ViceLog(0, ("hpr_Initialize: clientauthsecure returns %d %s (so trying noauth)", code, afs_error_message(code)));
317 scIndex = 0; /* use noauth */
319 /* if there was a problem, an unauthenticated conn is returned */
322 struct ktc_principal sname;
323 strcpy(sname.cell, info.name);
324 sname.instance[0] = 0;
325 strcpy(sname.name, "afs");
326 code = ktc_GetToken(&sname, &ttoken, sizeof(ttoken), NULL);
330 if (ttoken.kvno >= 0 && ttoken.kvno <= 256)
331 /* this is a kerberos ticket, set scIndex accordingly */
334 ViceLog(0, ("hpr_Initialize: funny kvno (%d) in ticket, proceeding", ttoken.kvno));
338 rxkad_NewClientSecurityObject(rxkad_clear, &ttoken.sessionKey,
339 ttoken.kvno, ttoken.ticketLen,
343 if ((scIndex == 0) && (sc[0] == 0))
344 sc[0] = rxnull_NewClientSecurityObject();
346 ViceLog(0, ("hpr_Initialize: Could not get afs tokens, running unauthenticated. [%d]", code));
348 memset(serverconns, 0, sizeof(serverconns)); /* terminate list!!! */
349 for (i = 0; i < info.numServers; i++) {
351 rx_NewConnection(info.hostAddr[i].sin_addr.s_addr,
352 info.hostAddr[i].sin_port, PRSRV, sc[scIndex],
356 code = ubik_ClientInit(serverconns, uclient);
358 ViceLog(0, ("hpr_Initialize: ubik client init failed. [%d]", code));
361 code = rxs_Release(sc[scIndex]);
366 hpr_End(struct ubik_client *uclient)
371 code = ubik_ClientDestroy(uclient);
377 hpr_GetHostCPS(afs_int32 host, prlist *CPS)
379 #ifdef AFS_PTHREAD_ENV
380 register afs_int32 code;
382 struct ubik_client *uclient =
383 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
386 code = hpr_Initialize(&uclient);
387 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
391 code = ubik_PR_GetHostCPS(uclient, 0, host, CPS, &over);
392 if (code != PRSUCCESS)
395 /* do something about this, probably make a new call */
396 /* don't forget there's a hard limit in the interface */
398 "membership list for host id %d exceeds display limit\n",
403 return pr_GetHostCPS(host, CPS);
408 hpr_NameToId(namelist *names, idlist *ids)
410 #ifdef AFS_PTHREAD_ENV
411 register afs_int32 code;
412 register afs_int32 i;
413 struct ubik_client *uclient =
414 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
417 code = hpr_Initialize(&uclient);
418 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
421 for (i = 0; i < names->namelist_len; i++)
422 stolower(names->namelist_val[i]);
423 code = ubik_PR_NameToID(uclient, 0, names, ids);
426 return pr_NameToId(names, ids);
431 hpr_IdToName(idlist *ids, namelist *names)
433 #ifdef AFS_PTHREAD_ENV
434 register afs_int32 code;
435 struct ubik_client *uclient =
436 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
439 code = hpr_Initialize(&uclient);
440 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
443 code = ubik_PR_IDToName(uclient, 0, ids, names);
446 return pr_IdToName(ids, names);
451 hpr_GetCPS(afs_int32 id, prlist *CPS)
453 #ifdef AFS_PTHREAD_ENV
454 register afs_int32 code;
456 struct ubik_client *uclient =
457 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
460 code = hpr_Initialize(&uclient);
461 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
465 code = ubik_PR_GetCPS(uclient, 0, id, CPS, &over);
466 if (code != PRSUCCESS)
469 /* do something about this, probably make a new call */
470 /* don't forget there's a hard limit in the interface */
471 fprintf(stderr, "membership list for id %d exceeds display limit\n",
476 return pr_GetCPS(id, CPS);
480 static short consolePort = 0;
483 h_Release(register struct host *host)
492 * If this thread does not have a hold on this host AND
493 * if other threads also dont have any holds on this host AND
494 * If either the HOSTDELETED or CLIENTDELETED flags are set
498 h_Release_r(register struct host *host)
501 if (!((host)->holds[h_holdSlot()] & ~h_holdbit())) {
502 if (!h_OtherHolds_r(host)) {
503 /* must avoid masking this until after h_OtherHolds_r runs
504 * but it should be run before h_TossStuff_r */
505 (host)->holds[h_holdSlot()] &= ~h_holdbit();
506 if ((host->hostFlags & HOSTDELETED)
507 || (host->hostFlags & CLIENTDELETED)) {
511 (host)->holds[h_holdSlot()] &= ~h_holdbit();
513 (host)->holds[h_holdSlot()] &= ~h_holdbit();
519 h_OtherHolds_r(register struct host *host)
521 register int i, bit, slot;
524 for (i = 0; i < h_maxSlots; i++) {
525 if (host->holds[i] != ((i == slot) ? bit : 0)) {
533 h_Lock_r(register struct host *host)
543 * returns 1 if already locked
544 * else returns locks and returns 0
548 h_NBLock_r(register struct host *host)
550 struct Lock *hostLock = &host->lock;
555 if (!(hostLock->excl_locked) && !(hostLock->readers_reading))
556 hostLock->excl_locked = WRITE_LOCK;
560 LOCK_UNLOCK(hostLock);
569 #if FS_STATS_DETAILED
570 /*------------------------------------------------------------------------
571 * PRIVATE h_AddrInSameNetwork
574 * Given a target IP address and a candidate IP address (both
575 * in host byte order), return a non-zero value (1) if the
576 * candidate address is in a different network from the target
580 * a_targetAddr : Target address.
581 * a_candAddr : Candidate address.
584 * 1 if the candidate address is in the same net as the target,
588 * The target and candidate addresses are both in host byte
589 * order, NOT network byte order, when passed in. We return
590 * our value as a character, since that's the type of field in
591 * the host structure, where this info will be stored.
595 *------------------------------------------------------------------------*/
598 h_AddrInSameNetwork(afs_uint32 a_targetAddr, afs_uint32 a_candAddr)
599 { /*h_AddrInSameNetwork */
601 afs_uint32 targetNet;
605 * Pull out the network and subnetwork numbers from the target
606 * and candidate addresses. We can short-circuit this whole
607 * affair if the target and candidate addresses are not of the
610 if (IN_CLASSA(a_targetAddr)) {
611 if (!(IN_CLASSA(a_candAddr))) {
614 targetNet = a_targetAddr & IN_CLASSA_NET;
615 candNet = a_candAddr & IN_CLASSA_NET;
616 } else if (IN_CLASSB(a_targetAddr)) {
617 if (!(IN_CLASSB(a_candAddr))) {
620 targetNet = a_targetAddr & IN_CLASSB_NET;
621 candNet = a_candAddr & IN_CLASSB_NET;
622 } /*Class B target */
623 else if (IN_CLASSC(a_targetAddr)) {
624 if (!(IN_CLASSC(a_candAddr))) {
627 targetNet = a_targetAddr & IN_CLASSC_NET;
628 candNet = a_candAddr & IN_CLASSC_NET;
629 } /*Class C target */
631 targetNet = a_targetAddr;
632 candNet = a_candAddr;
633 } /*Class D address */
636 * Now, simply compare the extracted net values for the two addresses
637 * (which at this point are known to be of the same class)
639 if (targetNet == candNet)
644 } /*h_AddrInSameNetwork */
645 #endif /* FS_STATS_DETAILED */
648 /* Assumptions: called with held host */
650 h_gethostcps_r(register struct host *host, register afs_int32 now)
655 /* wait if somebody else is already doing the getCPS call */
656 while (host->hostFlags & HCPS_INPROGRESS) {
657 slept = 1; /* I did sleep */
658 host->hostFlags |= HCPS_WAITING; /* I am sleeping now */
659 #ifdef AFS_PTHREAD_ENV
660 pthread_cond_wait(&host->cond, &host_glock_mutex);
661 #else /* AFS_PTHREAD_ENV */
662 if ((code = LWP_WaitProcess(&(host->hostFlags))) != LWP_SUCCESS)
663 ViceLog(0, ("LWP_WaitProcess returned %d\n", code));
664 #endif /* AFS_PTHREAD_ENV */
668 host->hostFlags |= HCPS_INPROGRESS; /* mark as CPSCall in progress */
669 if (host->hcps.prlist_val)
670 free(host->hcps.prlist_val); /* this is for hostaclRefresh */
671 host->hcps.prlist_val = NULL;
672 host->hcps.prlist_len = 0;
673 host->cpsCall = slept ? (FT_ApproxTime()) : (now);
676 code = hpr_GetHostCPS(ntohl(host->host), &host->hcps);
681 * Although ubik_Call (called by pr_GetHostCPS) traverses thru all protection servers
682 * and reevaluates things if no sync server or quorum is found we could still end up
683 * with one of these errors. In such case we would like to reevaluate the rpc call to
684 * find if there's cps for this guy. We treat other errors (except network failures
685 * ones - i.e. code < 0) as an indication that there is no CPS for this host. Ideally
686 * we could like to deal this problem the other way around (i.e. if code == NOCPS
687 * ignore else retry next time) but the problem is that there're other errors (i.e.
688 * EPERM) for which we don't want to retry and we don't know the whole code list!
690 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC) {
692 * We would have preferred to use a while loop and try again since ops in protected
693 * acls for this host will fail now but they'll be reevaluated on any subsequent
694 * call. The attempt to wait for a quorum/sync site or network error won't work
695 * since this problems really should only occurs during a complete fileserver
696 * restart. Since the fileserver will start before the ptservers (and thus before
697 * quorums are complete) clients will be utilizing all the fileserver's lwps!!
699 host->hcpsfailed = 1;
701 ("Warning: GetHostCPS failed (%d) for %x (%s:%d); will retry\n",
702 code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
704 host->hcpsfailed = 0;
706 ("gethost: GetHostCPS failed (%d) for %x (%s:%d); ignored\n",
707 code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
709 if (host->hcps.prlist_val)
710 free(host->hcps.prlist_val);
711 host->hcps.prlist_val = NULL;
712 host->hcps.prlist_len = 0; /* Make sure it's zero */
714 host->hcpsfailed = 0;
716 host->hostFlags &= ~HCPS_INPROGRESS;
717 /* signal all who are waiting */
718 if (host->hostFlags & HCPS_WAITING) { /* somebody is waiting */
719 host->hostFlags &= ~HCPS_WAITING;
720 #ifdef AFS_PTHREAD_ENV
721 assert(pthread_cond_broadcast(&host->cond) == 0);
722 #else /* AFS_PTHREAD_ENV */
723 if ((code = LWP_NoYieldSignal(&(host->hostFlags))) != LWP_SUCCESS)
724 ViceLog(0, ("LWP_NoYieldSignal returns %d\n", code));
725 #endif /* AFS_PTHREAD_ENV */
729 /* args in net byte order */
731 h_flushhostcps(register afs_uint32 hostaddr, register afs_uint16 hport)
733 register struct host *host;
737 host = h_Lookup_r(hostaddr, hport, &held);
739 host->hcpsfailed = 1;
749 * Allocate a host. It will be identified by the peer (ip,port) info in the
750 * rx connection provided. The host is returned held and locked
752 #define DEF_ROPCONS 2115
755 h_Alloc_r(register struct rx_connection *r_con)
757 struct servent *serverentry;
760 #if FS_STATS_DETAILED
761 afs_uint32 newHostAddr_HBO; /*New host IP addr, in host byte order */
762 #endif /* FS_STATS_DETAILED */
766 host->host = rxr_HostOf(r_con);
767 host->port = rxr_PortOf(r_con);
769 h_AddHostToAddrHashTable_r(host->host, host->port, host);
771 if (consolePort == 0) { /* find the portal number for console */
772 #if defined(AFS_OSF_ENV)
773 serverentry = getservbyname("ropcons", "");
775 serverentry = getservbyname("ropcons", 0);
778 consolePort = serverentry->s_port;
780 consolePort = htons(DEF_ROPCONS); /* Use a default */
782 if (host->port == consolePort)
784 /* Make a callback channel even for the console, on the off chance that it
785 * makes a request that causes a break call back. It shouldn't. */
786 h_SetupCallbackConn_r(host);
787 now = host->LastCall = host->cpsCall = host->ActiveCall = FT_ApproxTime();
789 host->hcps.prlist_val = NULL;
790 host->hcps.prlist_len = 0;
791 host->interface = NULL;
793 host->hcpsfailed = 0; /* save cycles */
794 h_gethostcps(host); /* do this under host hold/lock */
796 host->FirstClient = NULL;
799 h_InsertList_r(host); /* update global host List */
800 #if FS_STATS_DETAILED
802 * Compare the new host's IP address (in host byte order) with ours
803 * (the File Server's), remembering if they are in the same network.
805 newHostAddr_HBO = (afs_uint32) ntohl(host->host);
806 host->InSameNetwork =
807 h_AddrInSameNetwork(FS_HostAddr_HBO, newHostAddr_HBO);
808 #endif /* FS_STATS_DETAILED */
815 /* Make a callback channel even for the console, on the off chance that it
816 * makes a request that causes a break call back. It shouldn't. */
818 h_SetupCallbackConn_r(struct host * host)
821 sc = rxnull_NewClientSecurityObject();
822 host->callback_rxcon =
823 rx_NewConnection(host->host, host->port, 1, sc, 0);
824 rx_SetConnDeadTime(host->callback_rxcon, 50);
825 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
828 /* Lookup a host given an IP address and UDP port number. */
829 /* hostaddr and hport are in network order */
830 /* Note: host should be released by caller if 0 == *heldp and non-null */
831 /* hostaddr and hport are in network order */
833 h_Lookup_r(afs_uint32 haddr, afs_uint16 hport, int *heldp)
836 struct host *host = NULL;
837 struct h_AddrHashChain *chain;
838 int index = h_HashIndex(haddr);
839 extern int hostaclRefresh;
842 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
843 host = chain->hostPtr;
845 if (!(host->hostFlags & HOSTDELETED) && chain->addr == haddr
846 && chain->port == hport) {
847 *heldp = h_Held_r(host);
851 if (host->hostFlags & HOSTDELETED) {
858 now = FT_ApproxTime(); /* always evaluate "now" */
859 if (host->hcpsfailed || (host->cpsCall + hostaclRefresh < now)) {
861 * Every hostaclRefresh period (def 2 hrs) get the new
862 * membership list for the host. Note this could be the
863 * first time that the host is added to a group. Also
864 * here we also retry on previous legitimate hcps failures.
866 * If we get here we still have a host hold.
868 h_gethostcps_r(host, now);
878 /* Lookup a host given its UUID. */
880 h_LookupUuid_r(afsUUID * uuidp)
882 struct host *host = 0;
883 struct h_UuidHashChain *chain;
884 int index = h_UuidHashIndex(uuidp);
886 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
887 host = chain->hostPtr;
889 if (!(host->hostFlags & HOSTDELETED) && host->interface
890 && afs_uuid_equal(&host->interface->uuid, uuidp)) {
901 * h_Hold_r: Establish a hold by the current LWP on this host--the host
902 * or its clients will not be physically deleted until all holds have
904 * NOTE: h_Hold_r is a macro defined in host.h.
907 /* h_TossStuff_r: Toss anything in the host structure (the host or
908 * clients marked for deletion. Called from h_Release_r ONLY.
909 * To be called, there must be no holds, and either host->deleted
910 * or host->clientDeleted must be set.
913 h_TossStuff_r(register struct host *host)
915 register struct client **cp, *client;
918 /* if somebody still has this host held */
919 for (i = 0; (i < h_maxSlots) && (!(host)->holds[i]); i++);
923 /* if somebody still has this host locked */
924 if (h_NBLock_r(host) != 0) {
927 ("Warning: h_TossStuff_r failed; Host %x (%s:%d) was locked.\n",
928 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
934 /* ASSUMPTION: rxi_FreeConnection() does not yield */
935 for (cp = &host->FirstClient; (client = *cp);) {
936 if ((host->hostFlags & HOSTDELETED) || client->deleted) {
938 ObtainWriteLockNoBlock(&client->lock, code);
942 ("Warning: h_TossStuff_r failed: Host %x (%s:%d) client %x was locked.\n",
943 host, afs_inet_ntoa_r(host->host, hoststr),
944 ntohs(host->port), client));
948 if (client->refCount) {
951 ("Warning: h_TossStuff_r failed: Host %x (%s:%d) client %x refcount %d.\n",
952 host, afs_inet_ntoa_r(host->host, hoststr),
953 ntohs(host->port), client, client->refCount));
954 /* This is the same thing we do if the host is locked */
955 ReleaseWriteLock(&client->lock);
958 client->CPS.prlist_len = 0;
959 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
960 free(client->CPS.prlist_val);
961 client->CPS.prlist_val = NULL;
962 CurrentConnections--;
964 ReleaseWriteLock(&client->lock);
970 /* We've just cleaned out all the deleted clients; clear the flag */
971 host->hostFlags &= ~CLIENTDELETED;
973 if (host->hostFlags & HOSTDELETED) {
974 register struct h_AddrHashChain **ahp, *ath;
975 register struct rx_connection *rxconn;
977 struct AddrPort hostAddrPort;
980 if (host->Console & 1)
982 if ((rxconn = host->callback_rxcon)) {
983 host->callback_rxcon = (struct rx_connection *)0;
984 rx_DestroyConnection(rxconn);
986 if (host->hcps.prlist_val)
987 free(host->hcps.prlist_val);
988 host->hcps.prlist_val = NULL;
989 host->hcps.prlist_len = 0;
990 DeleteAllCallBacks_r(host, 1);
991 host->hostFlags &= ~RESETDONE; /* just to be safe */
993 /* if alternate addresses do not exist */
994 if (!(host->interface)) {
995 for (ahp = &hostAddrHashTable[h_HashIndex(host->host)]; (ath = *ahp);
997 assert(ath->hostPtr);
998 if (ath->hostPtr == host) {
1005 register struct h_UuidHashChain **uhp, *uth;
1006 /* delete the hash entry for the UUID */
1007 uuidp = &host->interface->uuid;
1008 for (uhp = &hostUuidHashTable[h_UuidHashIndex(uuidp)]; (uth = *uhp);
1010 assert(uth->hostPtr);
1011 if (uth->hostPtr == host) {
1017 /* delete the hash entry for each alternate addresses */
1018 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
1019 hostAddrPort = host->interface->interface[i];
1021 if (!hostAddrPort.valid)
1024 for (ahp = &hostAddrHashTable[h_HashIndex(hostAddrPort.addr)]; (ath = *ahp);
1026 assert(ath->hostPtr);
1027 if (ath->hostPtr == host) {
1034 free(host->interface);
1035 host->interface = NULL;
1036 } /* if alternate address exists */
1038 h_DeleteList_r(host); /* remove host from global host List */
1041 } /*h_TossStuff_r */
1044 /* h_Enumerate: Calls (*proc)(host, held, param) for at least each host in the
1045 * system at the start of the enumeration (perhaps more). Hosts may be deleted
1046 * (have delete flag set); ditto for clients. (*proc) is always called with
1047 * host h_held(). The hold state of the host with respect to this lwp is passed
1048 * to (*proc) as the param held. The proc should return 0 if the host should be
1049 * released, 1 if it should be held after enumeration.
1052 h_Enumerate(int (*proc) (), char *param)
1054 register struct host *host, **list;
1056 register int i, count;
1059 if (hostCount == 0) {
1063 list = (struct host **)malloc(hostCount * sizeof(struct host *));
1065 ViceLog(0, ("Failed malloc in h_Enumerate\n"));
1068 held = (int *)malloc(hostCount * sizeof(int));
1070 ViceLog(0, ("Failed malloc in h_Enumerate\n"));
1073 for (count = 0, host = hostList; host; host = host->next, count++) {
1075 if (!(held[count] = h_Held_r(host)))
1078 assert(count == hostCount);
1080 for (i = 0; i < count; i++) {
1081 held[i] = (*proc) (list[i], held[i], param);
1082 if (!H_ENUMERATE_ISSET_HELD(held[i]))
1083 h_Release(list[i]); /* this might free up the host */
1084 /* bail out of the enumeration early */
1085 if (H_ENUMERATE_ISSET_BAIL(held[i]))
1092 /* h_Enumerate_r (revised):
1093 * Calls (*proc)(host, held, param) for each host in hostList, starting
1095 * Hosts may be deleted (have delete flag set); ditto for clients.
1096 * (*proc) is always called with
1097 * host h_held() and the global host lock (H_LOCK) locked.The hold state of the
1098 * host with respect to this lwp is passed to (*proc) as the param held.
1099 * The proc should return 0 if the host should be released, 1 if it should
1100 * be held after enumeration.
1103 h_Enumerate_r(int (*proc) (), struct host *enumstart, char *param)
1105 register struct host *host, *next;
1106 register int held, nheld;
1108 if (hostCount == 0) {
1111 if (enumstart && !(held = h_Held_r(enumstart)))
1112 h_Hold_r(enumstart);
1113 for (host = enumstart; host; host = next, held = nheld) {
1115 if (next && !(nheld = h_Held_r(next)) && !H_ENUMERATE_ISSET_BAIL(held))
1117 held = (*proc) (host, held, param);
1118 if (!H_ENUMERATE_ISSET_HELD(held))
1119 h_Release_r(host); /* this might free up the host */
1120 if (H_ENUMERATE_ISSET_BAIL(held)) {
1121 if (!H_ENUMERATE_ISSET_HELD(nheld))
1122 h_Release_r(next); /* this might free up the host */
1126 } /*h_Enumerate_r */
1128 /* inserts a new HashChain structure corresponding to this UUID */
1130 h_AddHostToUuidHashTable_r(struct afsUUID *uuid, struct host *host)
1133 struct h_UuidHashChain *chain;
1135 /* hash into proper bucket */
1136 index = h_UuidHashIndex(uuid);
1138 /* don't add the same entry multiple times */
1139 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
1140 if (host->interface && afs_uuid_equal(&host->interface->uuid, uuid))
1144 /* insert into beginning of list for this bucket */
1145 chain = (struct h_UuidHashChain *)malloc(sizeof(struct h_UuidHashChain));
1147 ViceLog(0, ("Failed malloc in h_AddHostToUuidHashTable_r\n"));
1151 chain->hostPtr = host;
1152 chain->next = hostUuidHashTable[index];
1153 hostUuidHashTable[index] = chain;
1157 /* inserts a new HashChain structure corresponding to this address */
1159 h_AddHostToAddrHashTable_r(afs_uint32 addr, afs_uint16 port, struct host *host)
1162 struct h_AddrHashChain *chain;
1166 /* hash into proper bucket */
1167 index = h_HashIndex(addr);
1169 /* don't add the same entry multiple times */
1170 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1171 if (chain->addr == addr && chain->port == port) {
1172 if (chain->hostPtr == host)
1174 else if (!(host->hostFlags & HOSTDELETED))
1175 ViceLog(125, ("Addr %s:%d assigned to %x and %x.\n",
1176 afs_inet_ntoa_r(addr, hoststr), ntohs(port),
1184 /* insert into beginning of list for this bucket */
1185 chain = (struct h_AddrHashChain *)malloc(sizeof(struct h_AddrHashChain));
1187 ViceLog(0, ("Failed malloc in h_AddHostToAddrHashTable_r\n"));
1190 chain->hostPtr = host;
1191 chain->next = hostAddrHashTable[index];
1194 hostAddrHashTable[index] = chain;
1198 * This is called with host locked and held. At this point, the
1199 * hostAddrHashTable should not have entries for the alternate
1200 * interfaces. This function has to insert these entries in the
1201 * hostAddrHashTable.
1203 * All addresses are in network byte order.
1206 addInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1211 struct Interface *interface;
1212 char hoststr[16], hoststr2[16];
1215 assert(host->interface);
1218 * Make sure this address is on the list of known addresses
1221 number = host->interface->numberOfInterfaces;
1222 for (i = 0, found = 0; i < number && !found; i++) {
1223 if (host->interface->interface[i].addr == addr &&
1224 host->interface->interface[i].port == port) {
1226 host->interface->interface[i].valid = 1;
1230 ViceLog(125, ("addInterfaceAddr : host %s:%d addr %s:%d : found:%d\n",
1231 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1232 afs_inet_ntoa_r(addr, hoststr2), ntohs(port), found));
1235 interface = (struct Interface *)
1236 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * number));
1238 ViceLog(0, ("Failed malloc in addInterfaceAddr_r\n"));
1241 interface->numberOfInterfaces = number + 1;
1242 interface->uuid = host->interface->uuid;
1243 for (i = 0; i < number; i++)
1244 interface->interface[i] = host->interface->interface[i];
1245 interface->interface[number].addr = addr;
1246 interface->interface[number].port = port;
1247 interface->interface[number].valid = 1;
1248 free(host->interface);
1249 host->interface = interface;
1257 * This is called with host locked and held. At this point, the
1258 * hostAddrHashTable should not be having entries for the alternate
1259 * interfaces. This function has to insert these entries in the
1260 * hostAddrHashTable.
1262 * All addresses are in network byte order.
1265 removeInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1270 struct Interface *interface;
1271 char hoststr[16], hoststr2[16];
1274 assert(host->interface);
1276 ViceLog(125, ("removeInterfaceAddr : host %s:%d addr %s:%d\n",
1277 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1278 afs_inet_ntoa_r(addr, hoststr2), ntohs(port)));
1281 * Make sure this address is on the list of known addresses
1284 interface = host->interface;
1285 number = host->interface->numberOfInterfaces;
1286 for (i = 0, found = 0; i < number && !found; i++) {
1287 if (interface->interface[i].addr == addr &&
1288 interface->interface[i].port == port) {
1290 interface->interface[i].valid = 0;
1295 for (; i < number; i++) {
1296 interface->interface[i] = interface->interface[i+1];
1298 interface->numberOfInterfaces = number;
1302 * Remove the hash table entry for this address
1304 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1310 * This is called with host locked and held. This function differs
1311 * from removeInterfaceAddr_r in that it is called when the address
1312 * is being removed from the host regardless of whether or not there
1313 * is an interface list for the host. This function will delete the
1314 * host if there are no addresses left on it.
1316 * All addresses are in network byte order.
1319 removeAddress_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1322 char hoststr[16], hoststr2[16];
1324 if (!host->interface) {
1325 if (host->host == addr && host->port == port) {
1327 ("Removing only address for host %x (%s:%d), deleting host.\n",
1328 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1329 host->hostFlags |= HOSTDELETED;
1332 removeInterfaceAddr_r(host, host->host, host->port);
1333 if (host->interface->numberOfInterfaces == 0) {
1335 ("Removed only address for host %x (%s:%d), no alternate interfaces, deleting host.\n",
1336 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1337 host->hostFlags |= HOSTDELETED;
1339 struct rx_connection *rxconn;
1341 rxconn = host->callback_rxcon;
1342 host->callback_rxcon = NULL;
1345 struct client *client;
1347 * If rx_DestroyConnection calls h_FreeConnection we will
1348 * deadlock on the host_glock_mutex. Work around the problem
1349 * by unhooking the client from the connection before
1350 * destroying the connection.
1352 client = rx_GetSpecific(rxconn, rxcon_client_key);
1353 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
1354 rx_DestroyConnection(rxconn);
1357 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1358 if (host->interface->interface[i].valid) {
1360 ("Removed address for host %x (%s:%d), new primary interface %s:%d.\n",
1361 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1362 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr2),
1363 ntohs(host->interface->interface[i].port)));
1364 host->host = host->interface->interface[i].addr;
1365 host->port = host->interface->interface[i].port;
1366 h_AddHostToAddrHashTable_r(host->host, host->port, host);
1371 if (i == host->interface->numberOfInterfaces) {
1373 ("Removed only address for host %x (%s:%d), no valid alternate interfaces, deleting host.\n",
1374 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1375 host->hostFlags |= HOSTDELETED;
1378 sc = rxnull_NewClientSecurityObject();
1379 host->callback_rxcon =
1380 rx_NewConnection(host->host, host->port, 1, sc, 0);
1381 rx_SetConnDeadTime(host->callback_rxcon, 50);
1382 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
1390 h_threadquota(int waiting)
1395 } else if (lwps > 32) {
1398 } else if (lwps > 16) {
1408 /* Host is returned held */
1410 h_GetHost_r(struct rx_connection *tcon)
1413 struct host *oldHost;
1416 struct interfaceAddr interf;
1417 int interfValid = 0;
1418 struct Identity *identP = NULL;
1421 char hoststr[16], hoststr2[16];
1423 struct rx_connection *cb_conn = NULL;
1425 caps.Capabilities_val = NULL;
1427 haddr = rxr_HostOf(tcon);
1428 hport = rxr_PortOf(tcon);
1430 if (caps.Capabilities_val)
1431 free(caps.Capabilities_val);
1432 caps.Capabilities_val = NULL;
1433 caps.Capabilities_len = 0;
1436 host = h_Lookup_r(haddr, hport, &held);
1437 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
1438 if (host && !identP && !(host->Console & 1)) {
1439 /* This is a new connection, and we already have a host
1440 * structure for this address. Verify that the identity
1441 * of the caller matches the identity in the host structure.
1443 if ((host->hostFlags & HWHO_INPROGRESS) &&
1444 h_threadquota(host->lock.num_waiting))
1447 if (!(host->hostFlags & ALTADDR)) {
1448 host->hostFlags &= ~HWHO_INPROGRESS;
1449 /* Another thread is doing initialization */
1454 ("Host %x (%s:%d) starting h_Lookup again\n",
1455 host, afs_inet_ntoa_r(host->host, hoststr),
1456 ntohs(host->port)));
1459 host->hostFlags &= ~ALTADDR;
1460 cb_conn = host->callback_rxcon;
1461 rx_GetConnection(cb_conn);
1464 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1465 if (code == RXGEN_OPCODE)
1466 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1467 rx_PutConnection(cb_conn);
1470 if ((code == RXGEN_OPCODE) ||
1471 (afs_uuid_equal(&interf.uuid, &nulluuid))) {
1472 identP = (struct Identity *)malloc(sizeof(struct Identity));
1474 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1478 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1479 /* The host on this connection was unable to respond to
1480 * the WhoAreYou. We will treat this as a new connection
1481 * from the existing host. The worst that can happen is
1482 * that we maintain some extra callback state information */
1483 if (host->interface) {
1485 ("Host %x (%s:%d) used to support WhoAreYou, deleting.\n",
1487 afs_inet_ntoa_r(host->host, hoststr),
1488 ntohs(host->port)));
1489 host->hostFlags |= HOSTDELETED;
1490 host->hostFlags &= ~HWHO_INPROGRESS;
1497 } else if (code == 0) {
1499 identP = (struct Identity *)malloc(sizeof(struct Identity));
1501 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1505 identP->uuid = interf.uuid;
1506 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1507 /* Check whether the UUID on this connection matches
1508 * the UUID in the host structure. If they don't match
1509 * then this is not the same host as before. */
1510 if (!host->interface
1511 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid)) {
1513 ("Uuid doesn't match host %x (%s:%d).\n",
1514 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1516 removeAddress_r(host, host->host, host->port);
1517 host->hostFlags &= ~HWHO_INPROGRESS;
1526 ("CB: WhoAreYou failed for host %x (%s:%d), error %d\n",
1527 host, afs_inet_ntoa_r(host->host, hoststr),
1528 ntohs(host->port), code));
1529 host->hostFlags |= VENUSDOWN;
1531 if (caps.Capabilities_val
1532 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1533 host->hostFlags |= HERRORTRANS;
1535 host->hostFlags &= ~(HERRORTRANS);
1536 host->hostFlags |= ALTADDR;
1537 host->hostFlags &= ~HWHO_INPROGRESS;
1540 if (!(host->hostFlags & ALTADDR)) {
1541 /* another thread is doing the initialisation */
1543 ("Host %x (%s:%d) waiting for host-init to complete\n",
1544 host, afs_inet_ntoa_r(host->host, hoststr),
1545 ntohs(host->port)));
1547 host->hostFlags &= ~HWHO_INPROGRESS;
1552 ("Host %x (%s:%d) starting h_Lookup again\n",
1553 host, afs_inet_ntoa_r(host->host, hoststr),
1554 ntohs(host->port)));
1557 /* We need to check whether the identity in the host structure
1558 * matches the identity on the connection. If they don't match
1559 * then treat this a new host. */
1560 if (!(host->Console & 1)
1561 && ((!identP->valid && host->interface)
1562 || (identP->valid && !host->interface)
1564 && !afs_uuid_equal(&identP->uuid,
1565 &host->interface->uuid)))) {
1566 char uuid1[128], uuid2[128];
1568 afsUUID_to_string(&identP->uuid, uuid1, 127);
1569 if (host->interface)
1570 afsUUID_to_string(&host->interface->uuid, uuid2, 127);
1572 ("CB: new identity for host %x (%s:%d), deleting(%x %x %s %s)\n",
1573 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1574 identP->valid, host->interface,
1575 identP->valid ? uuid1 : "no_uuid",
1576 host->interface ? uuid2 : "no_uuid"));
1578 /* The host in the cache is not the host for this connection */
1579 host->hostFlags |= HOSTDELETED;
1580 host->hostFlags &= ~HWHO_INPROGRESS;
1587 host = h_Alloc_r(tcon); /* returned held and locked */
1588 h_gethostcps_r(host, FT_ApproxTime());
1589 if (!(host->Console & 1)) {
1591 cb_conn = host->callback_rxcon;
1592 rx_GetConnection(cb_conn);
1595 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1596 if (code == RXGEN_OPCODE)
1597 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1598 rx_PutConnection(cb_conn);
1601 if ((code == RXGEN_OPCODE) ||
1602 afs_uuid_equal(&interf.uuid, &nulluuid)) {
1605 (struct Identity *)malloc(sizeof(struct Identity));
1610 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1615 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1617 ("Host %x (%s:%d) does not support WhoAreYou.\n",
1618 host, afs_inet_ntoa_r(host->host, hoststr),
1619 ntohs(host->port)));
1621 } else if (code == 0) {
1624 (struct Identity *)malloc(sizeof(struct Identity));
1629 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1634 identP->uuid = interf.uuid;
1636 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1638 ("WhoAreYou success on host %x (%s:%d)\n",
1639 host, afs_inet_ntoa_r(host->host, hoststr),
1640 ntohs(host->port)));
1642 if (code == 0 && !identP->valid) {
1643 cb_conn = host->callback_rxcon;
1644 rx_GetConnection(cb_conn);
1646 code = RXAFSCB_InitCallBackState(cb_conn);
1647 rx_PutConnection(cb_conn);
1650 } else if (code == 0) {
1651 oldHost = h_LookupUuid_r(&identP->uuid);
1655 if (!h_Held_r(oldHost))
1658 oldHost->hostFlags |= HWHO_INPROGRESS;
1660 if (oldHost->interface) {
1662 afsUUID uuid = oldHost->interface->uuid;
1663 cb_conn = oldHost->callback_rxcon;
1664 rx_GetConnection(cb_conn);
1665 rx_SetConnDeadTime(cb_conn, 2);
1666 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1668 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1670 rx_SetConnDeadTime(cb_conn, 50);
1671 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1672 rx_PutConnection(cb_conn);
1675 /* The primary address is either not responding or
1676 * is not the client we are looking for.
1677 * MultiProbeAlternateAddress_r() will remove the
1678 * alternate interfaces that do not have the same
1680 ViceLog(0,("CB: ProbeUuid for host %x (%s:%d) failed %d\n",
1682 afs_inet_ntoa_r(oldHost->host, hoststr),
1683 ntohs(oldHost->port),code2));
1684 MultiProbeAlternateAddress_r(oldHost);
1691 /* This is a new address for an existing host. Update
1692 * the list of interfaces for the existing host and
1693 * delete the host structure we just allocated. */
1695 /* prevent warnings while manipulating interface lists */
1696 host->hostFlags |= HOSTDELETED;
1698 if (oldHost->host != haddr || oldHost->port != hport) {
1699 struct rx_connection *rxconn;
1702 ("CB: Host %x (%s:%d) has new addr %s:%d\n",
1704 afs_inet_ntoa_r(oldHost->host, hoststr2),
1705 ntohs(oldHost->port),
1706 afs_inet_ntoa_r(haddr, hoststr),
1708 if (probefail || oldHost->host == haddr) {
1709 /* The probe failed which means that the old address is
1710 * either unreachable or is not the same host we were just
1711 * contacted by. We will also remove addresses if only
1712 * the port has changed because that indicates the client
1715 removeInterfaceAddr_r(oldHost, oldHost->host, oldHost->port);
1718 struct Interface *interface = oldHost->interface;
1719 int number = oldHost->interface->numberOfInterfaces;
1720 for (i = 0, found = 0; i < number; i++) {
1721 if (interface->interface[i].addr == haddr &&
1722 interface->interface[i].port != hport) {
1728 /* We have just been contacted by a client that has been
1729 * seen from behind a NAT and at least one other address.
1731 removeInterfaceAddr_r(oldHost, haddr, interface->interface[i].port);
1734 addInterfaceAddr_r(oldHost, haddr, hport);
1735 oldHost->host = haddr;
1736 oldHost->port = hport;
1737 rxconn = oldHost->callback_rxcon;
1738 oldHost->callback_rxcon = host->callback_rxcon;
1739 host->callback_rxcon = NULL;
1742 struct client *client;
1744 * If rx_DestroyConnection calls h_FreeConnection we will
1745 * deadlock on the host_glock_mutex. Work around the problem
1746 * by unhooking the client from the connection before
1747 * destroying the connection.
1749 client = rx_GetSpecific(rxconn, rxcon_client_key);
1750 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
1751 rx_DestroyConnection(rxconn);
1754 host->hostFlags &= ~HWHO_INPROGRESS;
1756 /* release host because it was allocated by h_Alloc_r */
1759 /* the new host is held and locked */
1761 /* This really is a new host */
1762 h_AddHostToUuidHashTable_r(&identP->uuid, host);
1763 cb_conn = host->callback_rxcon;
1764 rx_GetConnection(cb_conn);
1767 RXAFSCB_InitCallBackState3(cb_conn,
1769 rx_PutConnection(cb_conn);
1774 ("InitCallBackState3 success on host %x (%s:%d)\n",
1775 host, afs_inet_ntoa_r(host->host, hoststr),
1776 ntohs(host->port)));
1777 assert(interfValid == 1);
1778 initInterfaceAddr_r(host, &interf);
1784 ("CB: RCallBackConnectBack failed for %x (%s:%d)\n",
1785 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1786 host->hostFlags |= VENUSDOWN;
1789 ("CB: RCallBackConnectBack succeeded for %x (%s:%d)\n",
1790 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1791 host->hostFlags |= RESETDONE;
1794 if (caps.Capabilities_val
1795 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1796 host->hostFlags |= HERRORTRANS;
1798 host->hostFlags &= ~(HERRORTRANS);
1799 host->hostFlags |= ALTADDR; /* host structure initialization complete */
1800 host->hostFlags &= ~HWHO_INPROGRESS;
1803 if (caps.Capabilities_val)
1804 free(caps.Capabilities_val);
1805 caps.Capabilities_val = NULL;
1806 caps.Capabilities_len = 0;
1812 static char localcellname[PR_MAXNAMELEN + 1];
1813 char local_realms[AFS_NUM_LREALMS][AFS_REALM_SZ];
1814 int num_lrealms = -1;
1820 memset(&nulluuid, 0, sizeof(afsUUID));
1821 afsconf_GetLocalCell(confDir, localcellname, PR_MAXNAMELEN);
1822 if (num_lrealms == -1) {
1824 for (i=0; i<AFS_NUM_LREALMS; i++) {
1825 if (afs_krb_get_lrealm(local_realms[i], i) != 0 /*KSUCCESS*/)
1831 ("afs_krb_get_lrealm failed, using %s.\n",
1833 strncpy(local_realms[0], localcellname, AFS_REALM_SZ);
1839 /* initialize the rest of the local realms to nullstring for debugging */
1840 for (; i<AFS_NUM_LREALMS; i++)
1841 local_realms[i][0] = '\0';
1843 rxcon_ident_key = rx_KeyCreate((rx_destructor_t) free);
1844 rxcon_client_key = rx_KeyCreate((rx_destructor_t) 0);
1845 #ifdef AFS_PTHREAD_ENV
1846 assert(pthread_mutex_init(&host_glock_mutex, NULL) == 0);
1847 #endif /* AFS_PTHREAD_ENV */
1851 MapName_r(char *aname, char *acell, afs_int32 * aval)
1856 afs_int32 anamelen, cnamelen;
1860 anamelen = strlen(aname);
1861 if (anamelen >= PR_MAXNAMELEN)
1862 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
1864 lnames.namelist_len = 1;
1865 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
1866 lids.idlist_len = 0;
1867 lids.idlist_val = NULL;
1869 cnamelen = strlen(acell);
1871 if (afs_is_foreign_ticket_name(aname, NULL, acell, localcellname)) {
1873 ("MapName: cell is foreign. cell=%s, localcell=%s, localrealms={%s,%s,%s,%s}\n",
1874 acell, localcellname, local_realms[0],local_realms[1],local_realms[2],local_realms[3]));
1875 if ((anamelen + cnamelen + 1) >= PR_MAXNAMELEN) {
1877 ("MapName: Name too long, using AnonymousID for %s@%s\n",
1879 *aval = AnonymousID;
1882 foreign = 1; /* attempt cross-cell authentication */
1883 tname = (char *)malloc(PR_MAXNAMELEN);
1885 ViceLog(0, ("Failed malloc in MapName_r\n"));
1888 strcpy(tname, aname);
1889 tname[anamelen] = '@';
1890 strcpy(tname + anamelen + 1, acell);
1891 lnames.namelist_val = (prname *) tname;
1896 code = hpr_NameToId(&lnames, &lids);
1899 if (lids.idlist_val) {
1900 *aval = lids.idlist_val[0];
1901 if (*aval == AnonymousID) {
1903 ("MapName: NameToId on %s returns anonymousID\n",
1904 lnames.namelist_val));
1906 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
1909 ("MapName: NameToId on '%s' is unknown\n",
1910 lnames.namelist_val));
1916 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
1924 /* NOTE: this returns the client with a Write lock and a refCount */
1926 h_ID2Client(afs_int32 vid)
1928 register struct client *client;
1929 register struct host *host;
1932 for (host = hostList; host; host = host->next) {
1933 if (host->hostFlags & HOSTDELETED)
1935 for (client = host->FirstClient; client; client = client->next) {
1936 if (!client->deleted && client->ViceId == vid) {
1939 ObtainWriteLock(&client->lock);
1950 * Called by the server main loop. Returns a h_Held client, which must be
1951 * released later the main loop. Allocates a client if the matching one
1952 * isn't around. The client is returned with its reference count incremented
1953 * by one. The caller must call h_ReleaseClient_r when finished with
1956 * the client->host is returned held. h_ReleaseClient_r does not release
1957 * the hold on client->host.
1960 h_FindClient_r(struct rx_connection *tcon)
1962 register struct client *client;
1963 register struct host *host;
1964 struct client *oldClient;
1969 #if (64-MAXKTCNAMELEN)
1970 ticket name length != 64
1974 char uname[PR_MAXNAMELEN];
1975 char tcell[MAXKTCREALMLEN];
1979 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
1980 if (client && client->sid == rxr_CidOf(tcon)
1981 && client->VenusEpoch == rxr_GetEpoch(tcon)) {
1983 h_Hold_r(client->host);
1984 if (!client->deleted && client->prfail != 2) {
1985 /* Could add shared lock on client here */
1986 /* note that we don't have to lock entry in this path to
1987 * ensure CPS is initialized, since we don't call rx_SetSpecific
1988 * until initialization is done, and we only get here if
1989 * rx_GetSpecific located the client structure.
1994 ObtainWriteLock(&client->lock); /* released at end */
2000 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
2002 ("FindClient: authenticating connection: authClass=%d\n",
2004 if (authClass == 1) {
2005 /* A bcrypt tickets, no longer supported */
2006 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
2007 viceid = AnonymousID;
2008 expTime = 0x7fffffff;
2009 } else if (authClass == 2) {
2012 /* kerberos ticket */
2013 code = rxkad_GetServerInfo(tcon, /*level */ 0, &expTime,
2014 tname, tinst, tcell, &kvno);
2016 ViceLog(1, ("Failed to get rxkad ticket info\n"));
2017 viceid = AnonymousID;
2018 expTime = 0x7fffffff;
2020 int ilen = strlen(tinst);
2022 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
2023 tname, tinst, tcell, expTime, kvno));
2024 strncpy(uname, tname, sizeof(uname));
2026 if (strlen(uname) + 1 + ilen >= sizeof(uname))
2029 strcat(uname, tinst);
2031 /* translate the name to a vice id */
2032 code = MapName_r(uname, tcell, &viceid);
2036 ("failed to map name=%s, cell=%s -> code=%d\n", uname,
2039 viceid = AnonymousID;
2040 expTime = 0x7fffffff;
2044 viceid = AnonymousID; /* unknown security class */
2045 expTime = 0x7fffffff;
2048 if (!client) { /* loop */
2049 host = h_GetHost_r(tcon); /* Returns it h_Held */
2055 /* First try to find the client structure */
2056 for (client = host->FirstClient; client; client = client->next) {
2057 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2058 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2061 ObtainWriteLock(&client->lock);
2067 /* Still no client structure - get one */
2070 /* Retry to find the client structure */
2071 for (client = host->FirstClient; client; client = client->next) {
2072 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2073 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2075 goto retryfirstclient;
2080 ObtainWriteLock(&client->lock);
2081 client->refCount = 1;
2082 client->host = host;
2083 #if FS_STATS_DETAILED
2084 client->InSameNetwork = host->InSameNetwork;
2085 #endif /* FS_STATS_DETAILED */
2086 client->ViceId = viceid;
2087 client->expTime = expTime; /* rx only */
2088 client->authClass = authClass; /* rx only */
2089 client->sid = rxr_CidOf(tcon);
2090 client->VenusEpoch = rxr_GetEpoch(tcon);
2091 client->CPS.prlist_val = NULL;
2092 client->CPS.prlist_len = 0;
2096 client->prfail = fail;
2098 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
2099 client->CPS.prlist_len = 0;
2100 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID))
2101 free(client->CPS.prlist_val);
2102 client->CPS.prlist_val = NULL;
2103 client->ViceId = viceid;
2104 client->expTime = expTime;
2106 if (viceid == ANONYMOUSID) {
2107 client->CPS.prlist_len = AnonCPS.prlist_len;
2108 client->CPS.prlist_val = AnonCPS.prlist_val;
2111 code = hpr_GetCPS(viceid, &client->CPS);
2116 ("pr_GetCPS failed(%d) for user %d, host %x (%s:%d)\n",
2117 code, viceid, client->host,
2118 afs_inet_ntoa_r(client->host->host,hoststr),
2119 ntohs(client->host->port)));
2121 /* Although ubik_Call (called by pr_GetCPS) traverses thru
2122 * all protection servers and reevaluates things if no
2123 * sync server or quorum is found we could still end up
2124 * with one of these errors. In such case we would like to
2125 * reevaluate the rpc call to find if there's cps for this
2126 * guy. We treat other errors (except network failures
2127 * ones - i.e. code < 0) as an indication that there is no
2128 * CPS for this host. Ideally we could like to deal this
2129 * problem the other way around (i.e. if code == NOCPS
2130 * ignore else retry next time) but the problem is that
2131 * there're other errors (i.e. EPERM) for which we don't
2132 * want to retry and we don't know the whole code list!
2134 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
2138 /* the disabling of system:administrators is so iffy and has so many
2139 * possible failure modes that we will disable it again */
2140 /* Turn off System:Administrator for safety
2141 * if (AL_IsAMember(SystemId, client->CPS) == 0)
2142 * assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
2145 /* Now, tcon may already be set to a rock, since we blocked with no host
2146 * or client locks set above in pr_GetCPS (XXXX some locking is probably
2147 * required). So, before setting the RPC's rock, we should disconnect
2148 * the RPC from the other client structure's rock.
2150 oldClient = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2151 if (oldClient && oldClient != client && oldClient->sid == rxr_CidOf(tcon)
2152 && oldClient->VenusEpoch == rxr_GetEpoch(tcon)) {
2154 if (!oldClient->deleted) {
2155 /* if we didn't create it, it's not ours to put back */
2157 ViceLog(0, ("FindClient: stillborn client %x(%x); conn %x (host %s:%d) had client %x(%x)\n",
2158 client, client->sid, tcon,
2159 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2160 ntohs(rxr_PortOf(tcon)),
2161 oldClient, oldClient->sid));
2162 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2163 free(client->CPS.prlist_val);
2164 client->CPS.prlist_val = NULL;
2165 client->CPS.prlist_len = 0;
2167 /* We should perhaps check for 0 here */
2169 ReleaseWriteLock(&client->lock);
2174 oldClient->refCount++;
2176 ObtainWriteLock(&oldClient->lock);
2180 ViceLog(0, ("FindClient: deleted client %x(%x) already had conn %x (host %s:%d), stolen by client %x(%x)\n",
2181 oldClient, oldClient->sid, tcon,
2182 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2183 ntohs(rxr_PortOf(tcon)),
2184 client, client->sid));
2185 /* rx_SetSpecific will be done immediately below */
2188 /* Avoid chaining in more than once. */
2191 client->next = host->FirstClient;
2192 host->FirstClient = client;
2194 CurrentConnections++; /* increment number of connections */
2196 rx_SetSpecific(tcon, rxcon_client_key, client);
2197 ReleaseWriteLock(&client->lock);
2201 } /*h_FindClient_r */
2204 h_ReleaseClient_r(struct client *client)
2206 assert(client->refCount > 0);
2213 * Sigh: this one is used to get the client AGAIN within the individual
2214 * server routines. This does not bother h_Holding the host, since
2215 * this is assumed already have been done by the server main loop.
2216 * It does check tokens, since only the server routines can return the
2217 * VICETOKENDEAD error code
2220 GetClient(struct rx_connection *tcon, struct client **cp)
2222 register struct client *client;
2227 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2228 if (client == NULL) {
2230 ("GetClient: no client in conn %x (host %s:%d), VBUSYING\n",
2231 tcon, afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2232 ntohs(rxr_PortOf(tcon))));
2236 if (rxr_CidOf(tcon) != client->sid || rxr_GetEpoch(tcon) != client->VenusEpoch) {
2238 ("GetClient: tcon %x tcon sid %d client sid %d\n",
2239 tcon, rxr_CidOf(tcon), client->sid));
2243 if (client && client->LastCall > client->expTime && client->expTime) {
2245 ("Token for %s at %s:%d expired %d\n", h_UserName(client),
2246 afs_inet_ntoa_r(client->host->host, hoststr),
2247 ntohs(client->host->port), client->expTime));
2249 return VICETOKENDEAD;
2259 PutClient(struct client **cp)
2265 h_ReleaseClient_r(*cp);
2272 /* Client user name for short term use. Note that this is NOT inexpensive */
2274 h_UserName(struct client *client)
2276 static char User[PR_MAXNAMELEN + 1];
2280 lids.idlist_len = 1;
2281 lids.idlist_val = (afs_int32 *) malloc(1 * sizeof(afs_int32));
2282 if (!lids.idlist_val) {
2283 ViceLog(0, ("Failed malloc in h_UserName\n"));
2286 lnames.namelist_len = 0;
2287 lnames.namelist_val = (prname *) 0;
2288 lids.idlist_val[0] = client->ViceId;
2289 if (hpr_IdToName(&lids, &lnames)) {
2290 /* We need to free id we alloced above! */
2291 free(lids.idlist_val);
2292 return "*UNKNOWN USER NAME*";
2294 strncpy(User, lnames.namelist_val[0], PR_MAXNAMELEN);
2295 free(lids.idlist_val);
2296 free(lnames.namelist_val);
2305 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
2306 CEs, CEBlocks, HTs, HTBlocks));
2312 h_PrintClient(register struct host *host, int held, StreamHandle_t * file)
2314 register struct client *client;
2319 time_t LastCall, expTime;
2322 LastCall = host->LastCall;
2323 if (host->hostFlags & HOSTDELETED) {
2327 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2328 "Host %s:%d down = %d, LastCall %s",
2329 afs_inet_ntoa_r(host->host, hoststr),
2330 ntohs(host->port), (host->hostFlags & VENUSDOWN),
2331 afs_ctime(&LastCall, tbuffer,
2333 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2334 for (client = host->FirstClient; client; client = client->next) {
2335 if (!client->deleted) {
2336 expTime = client->expTime;
2337 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2338 " user id=%d, name=%s, sl=%s till %s",
2339 client->ViceId, h_UserName(client),
2341 authClass ? "Authenticated" :
2342 "Not authenticated",
2344 authClass ? afs_ctime(&expTime, tbuffer,
2347 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2348 (void)afs_snprintf(tmpStr, sizeof tmpStr, " CPS-%d is [",
2349 client->CPS.prlist_len);
2350 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2351 if (client->CPS.prlist_val) {
2352 for (i = 0; i > client->CPS.prlist_len; i++) {
2353 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
2354 client->CPS.prlist_val[i]);
2355 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2358 sprintf(tmpStr, "]\n");
2359 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2365 } /*h_PrintClient */
2370 * Print a list of clients, with last security level and token value seen,
2380 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
2384 ("Couldn't create client dump file %s\n",
2385 AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2388 now = FT_ApproxTime();
2389 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active users at %s\n",
2390 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
2391 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2392 h_Enumerate(h_PrintClient, (char *)file);
2393 STREAM_REALLYCLOSE(file);
2394 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2401 h_DumpHost(register struct host *host, int held, StreamHandle_t * file)
2408 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2409 "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 [",
2410 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port), host->index,
2411 host->cblist, CheckLock(&host->lock), host->LastCall,
2412 host->ActiveCall, (host->hostFlags & VENUSDOWN),
2413 host->hostFlags & HOSTDELETED, host->Console,
2414 host->hostFlags & CLIENTDELETED, host->hcpsfailed,
2416 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2417 if (host->hcps.prlist_val)
2418 for (i = 0; i < host->hcps.prlist_len; i++) {
2419 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
2420 host->hcps.prlist_val[i]);
2421 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2423 sprintf(tmpStr, "] [");
2424 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2425 if (host->interface)
2426 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
2428 sprintf(tmpStr, " %s:%d",
2429 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
2430 ntohs(host->interface->interface[i].port));
2431 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2433 sprintf(tmpStr, "] holds: ");
2434 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2436 for (i = 0; i < h_maxSlots; i++) {
2437 sprintf(tmpStr, "%04x", host->holds[i]);
2438 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2440 sprintf(tmpStr, " slot/bit: %d/%d\n", h_holdSlot(), h_holdbit());
2441 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2453 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
2459 ("Couldn't create host dump file %s\n",
2460 AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2463 now = FT_ApproxTime();
2464 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active hosts at %s\n",
2465 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
2466 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2467 h_Enumerate(h_DumpHost, (char *)file);
2468 STREAM_REALLYCLOSE(file);
2469 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2473 #ifdef AFS_DEMAND_ATTACH_FS
2476 * host state serialization
2478 static int h_stateFillHeader(struct host_state_header * hdr);
2479 static int h_stateCheckHeader(struct host_state_header * hdr);
2480 static int h_stateAllocMap(struct fs_dump_state * state);
2481 static int h_stateSaveHost(register struct host * host, int held, struct fs_dump_state * state);
2482 static int h_stateRestoreHost(struct fs_dump_state * state);
2483 static int h_stateRestoreIndex(struct host * h, int held, struct fs_dump_state * state);
2484 static int h_stateVerifyHost(struct host * h, int held, struct fs_dump_state * state);
2485 static int h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h, afs_uint32 addr, afs_uint16 port);
2486 static int h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h);
2487 static void h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out);
2488 static void h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out);
2491 /* this procedure saves all host state to disk for fast startup */
2493 h_stateSave(struct fs_dump_state * state)
2495 AssignInt64(state->eof_offset, &state->hdr->h_offset);
2498 ViceLog(0, ("h_stateSave: hostCount=%d\n", hostCount));
2500 /* invalidate host state header */
2501 memset(state->h_hdr, 0, sizeof(struct host_state_header));
2503 if (fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2504 sizeof(struct host_state_header))) {
2509 fs_stateIncEOF(state, sizeof(struct host_state_header));
2511 h_Enumerate_r(h_stateSaveHost, hostList, (char *)state);
2516 h_stateFillHeader(state->h_hdr);
2518 /* write the real header to disk */
2519 state->bail = fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2520 sizeof(struct host_state_header));
2527 * host state serialization
2529 * this procedure restores all host state from a disk for fast startup
2532 h_stateRestore(struct fs_dump_state * state)
2536 /* seek to the right position and read in the host state header */
2537 if (fs_stateReadHeader(state, &state->hdr->h_offset, state->h_hdr,
2538 sizeof(struct host_state_header))) {
2543 /* check the validity of the header */
2544 if (h_stateCheckHeader(state->h_hdr)) {
2549 records = state->h_hdr->records;
2551 if (h_stateAllocMap(state)) {
2556 /* iterate over records restoring host state */
2557 for (i=0; i < records; i++) {
2558 if (h_stateRestoreHost(state) != 0) {
2569 h_stateRestoreIndices(struct fs_dump_state * state)
2571 h_Enumerate_r(h_stateRestoreIndex, hostList, (char *)state);
2576 h_stateRestoreIndex(struct host * h, int held, struct fs_dump_state * state)
2578 if (cb_OldToNew(state, h->cblist, &h->cblist)) {
2579 return H_ENUMERATE_BAIL(held);
2585 h_stateVerify(struct fs_dump_state * state)
2587 h_Enumerate_r(h_stateVerifyHost, hostList, (char *)state);
2592 h_stateVerifyHost(struct host * h, int held, struct fs_dump_state * state)
2597 ViceLog(0, ("h_stateVerifyHost: error: NULL host pointer in linked list\n"));
2598 return H_ENUMERATE_BAIL(held);
2602 for (i = h->interface->numberOfInterfaces-1; i >= 0; i--) {
2603 if (h_stateVerifyAddrHash(state, h, h->interface->interface[i].addr,
2604 h->interface->interface[i].port)) {
2608 if (h_stateVerifyUuidHash(state, h)) {
2611 } else if (h_stateVerifyAddrHash(state, h, h->host, h->port)) {
2615 if (cb_stateVerifyHCBList(state, h)) {
2624 h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h, afs_uint32 addr, afs_uint16 port)
2626 int ret = 0, found = 0;
2627 struct host *host = NULL;
2628 struct h_AddrHashChain *chain;
2629 int index = h_HashIndex(addr);
2633 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
2634 host = chain->hostPtr;
2636 afs_inet_ntoa_r(addr, tmp);
2637 ViceLog(0, ("h_stateVerifyAddrHash: error: addr hash chain has NULL host ptr (lookup addr %s)\n", tmp));
2641 if ((chain->addr == addr) && (chain->port == port)) {
2643 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr hash entry points to different host struct (%d, %d)\n",
2644 h->index, host->index));
2645 state->flags.warnings_generated = 1;
2650 if (chain_len > FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN) {
2651 ViceLog(0, ("h_stateVerifyAddrHash: error: hash chain length exceeds %d; assuming there's a loop\n",
2652 FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN));
2660 afs_inet_ntoa_r(addr, tmp);
2661 if (state->mode == FS_STATE_LOAD_MODE) {
2662 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s not found in hash\n", tmp));
2666 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr %s not found in hash\n", tmp));
2667 state->flags.warnings_generated = 1;
2676 h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h)
2678 int ret = 0, found = 0;
2679 struct host *host = NULL;
2680 struct h_UuidHashChain *chain;
2681 afsUUID * uuidp = &h->interface->uuid;
2682 int index = h_UuidHashIndex(uuidp);
2686 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
2687 host = chain->hostPtr;
2689 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
2690 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid hash chain has NULL host ptr (lookup uuid %s)\n", tmp));
2694 if (host->interface &&
2695 afs_uuid_equal(&host->interface->uuid, uuidp)) {
2697 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid hash entry points to different host struct (%d, %d)\n",
2698 h->index, host->index));
2699 state->flags.warnings_generated = 1;
2704 if (chain_len > FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN) {
2705 ViceLog(0, ("h_stateVerifyUuidHash: error: hash chain length exceeds %d; assuming there's a loop\n",
2706 FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN));
2714 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
2715 if (state->mode == FS_STATE_LOAD_MODE) {
2716 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid %s not found in hash\n", tmp));
2720 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid %s not found in hash\n", tmp));
2721 state->flags.warnings_generated = 1;
2729 /* create the host state header structure */
2731 h_stateFillHeader(struct host_state_header * hdr)
2733 hdr->stamp.magic = HOST_STATE_MAGIC;
2734 hdr->stamp.version = HOST_STATE_VERSION;
2737 /* check the contents of the host state header structure */
2739 h_stateCheckHeader(struct host_state_header * hdr)
2743 if (hdr->stamp.magic != HOST_STATE_MAGIC) {
2744 ViceLog(0, ("check_host_state_header: invalid state header\n"));
2747 else if (hdr->stamp.version != HOST_STATE_VERSION) {
2748 ViceLog(0, ("check_host_state_header: unknown version number\n"));
2754 /* allocate the host id mapping table */
2756 h_stateAllocMap(struct fs_dump_state * state)
2758 state->h_map.len = state->h_hdr->index_max + 1;
2759 state->h_map.entries = (struct idx_map_entry_t *)
2760 calloc(state->h_map.len, sizeof(struct idx_map_entry_t));
2761 return (state->h_map.entries != NULL) ? 0 : 1;
2764 /* function called by h_Enumerate to save a host to disk */
2766 h_stateSaveHost(register struct host * host, int held, struct fs_dump_state * state)
2768 int i, if_len=0, hcps_len=0;
2769 struct hostDiskEntry hdsk;
2770 struct host_state_entry_header hdr;
2771 struct Interface * ifp = NULL;
2772 afs_int32 * hcps = NULL;
2773 struct iovec iov[4];
2776 memset(&hdr, 0, sizeof(hdr));
2778 if (state->h_hdr->index_max < host->index) {
2779 state->h_hdr->index_max = host->index;
2782 h_hostToDiskEntry_r(host, &hdsk);
2783 if (host->interface) {
2784 if_len = sizeof(struct Interface) +
2785 ((host->interface->numberOfInterfaces-1) * sizeof(struct AddrPort));
2786 ifp = (struct Interface *) malloc(if_len);
2787 assert(ifp != NULL);
2788 memcpy(ifp, host->interface, if_len);
2789 hdr.interfaces = host->interface->numberOfInterfaces;
2790 iov[iovcnt].iov_base = (char *) ifp;
2791 iov[iovcnt].iov_len = if_len;
2794 if (host->hcps.prlist_val) {
2795 hdr.hcps = host->hcps.prlist_len;
2796 hcps_len = hdr.hcps * sizeof(afs_int32);
2797 hcps = (afs_int32 *) malloc(hcps_len);
2798 assert(hcps != NULL);
2799 memcpy(hcps, host->hcps.prlist_val, hcps_len);
2800 iov[iovcnt].iov_base = (char *) hcps;
2801 iov[iovcnt].iov_len = hcps_len;
2805 if (hdsk.index > state->h_hdr->index_max)
2806 state->h_hdr->index_max = hdsk.index;
2808 hdr.len = sizeof(struct host_state_entry_header) +
2809 sizeof(struct hostDiskEntry) + if_len + hcps_len;
2810 hdr.magic = HOST_STATE_ENTRY_MAGIC;
2812 iov[0].iov_base = (char *) &hdr;
2813 iov[0].iov_len = sizeof(hdr);
2814 iov[1].iov_base = (char *) &hdsk;
2815 iov[1].iov_len = sizeof(struct hostDiskEntry);
2817 if (fs_stateWriteV(state, iov, iovcnt)) {
2818 ViceLog(0, ("h_stateSaveHost: failed to save host %d", host->index));
2822 fs_stateIncEOF(state, hdr.len);
2824 state->h_hdr->records++;
2832 return H_ENUMERATE_BAIL(held);
2837 /* restores a host from disk */
2839 h_stateRestoreHost(struct fs_dump_state * state)
2841 int ifp_len=0, hcps_len=0, bail=0;
2842 struct host_state_entry_header hdr;
2843 struct hostDiskEntry hdsk;
2844 struct host *host = NULL;
2845 struct Interface *ifp = NULL;
2846 afs_int32 * hcps = NULL;
2847 struct iovec iov[3];
2850 if (fs_stateRead(state, &hdr, sizeof(hdr))) {
2851 ViceLog(0, ("h_stateRestoreHost: failed to read host entry header from dump file '%s'\n",
2857 if (hdr.magic != HOST_STATE_ENTRY_MAGIC) {
2858 ViceLog(0, ("h_stateRestoreHost: fileserver state dump file '%s' is corrupt.\n",
2864 iov[0].iov_base = (char *) &hdsk;
2865 iov[0].iov_len = sizeof(struct hostDiskEntry);
2867 if (hdr.interfaces) {
2868 ifp_len = sizeof(struct Interface) +
2869 ((hdr.interfaces-1) * sizeof(struct AddrPort));
2870 ifp = (struct Interface *) malloc(ifp_len);
2871 assert(ifp != NULL);
2872 iov[iovcnt].iov_base = (char *) ifp;
2873 iov[iovcnt].iov_len = ifp_len;
2877 hcps_len = hdr.hcps * sizeof(afs_int32);
2878 hcps = (afs_int32 *) malloc(hcps_len);
2879 assert(hcps != NULL);
2880 iov[iovcnt].iov_base = (char *) hcps;
2881 iov[iovcnt].iov_len = hcps_len;
2885 if ((ifp_len + hcps_len + sizeof(hdsk) + sizeof(hdr)) != hdr.len) {
2886 ViceLog(0, ("h_stateRestoreHost: host entry header length fields are inconsistent\n"));
2891 if (fs_stateReadV(state, iov, iovcnt)) {
2892 ViceLog(0, ("h_stateRestoreHost: failed to read host entry\n"));
2897 if (!hdr.hcps && hdsk.hcps_valid) {
2898 /* valid, zero-length host cps ; does this ever happen? */
2899 hcps = (afs_int32 *) malloc(sizeof(afs_int32));
2900 assert(hcps != NULL);
2904 assert(host != NULL);
2907 host->interface = ifp;
2910 host->hcps.prlist_val = hcps;
2911 host->hcps.prlist_len = hdr.hcps;
2914 h_diskEntryToHost_r(&hdsk, host);
2915 h_SetupCallbackConn_r(host);
2919 for (i = ifp->numberOfInterfaces-1; i >= 0; i--) {
2921 h_AddHostToUuidHashTable_r(&ifp->uuid, host);
2923 h_AddHostToAddrHashTable_r(host->host, host->port, host);
2924 h_InsertList_r(host);
2926 /* setup host id map entry */
2927 state->h_map.entries[hdsk.index].old_idx = hdsk.index;
2928 state->h_map.entries[hdsk.index].new_idx = host->index;
2940 /* serialize a host structure to disk */
2942 h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out)
2944 out->host = in->host;
2945 out->port = in->port;
2946 out->hostFlags = in->hostFlags;
2947 out->Console = in->Console;
2948 out->hcpsfailed = in->hcpsfailed;
2949 out->LastCall = in->LastCall;
2950 out->ActiveCall = in->ActiveCall;
2951 out->cpsCall = in->cpsCall;
2952 out->cblist = in->cblist;
2953 #ifdef FS_STATS_DETAILED
2954 out->InSameNetwork = in->InSameNetwork;
2957 /* special fields we save, but are not memcpy'd back on restore */
2958 out->index = in->index;
2959 out->hcps_len = in->hcps.prlist_len;
2960 out->hcps_valid = (in->hcps.prlist_val == NULL) ? 0 : 1;
2963 /* restore a host structure from disk */
2965 h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out)
2967 out->host = in->host;
2968 out->port = in->port;
2969 out->hostFlags = in->hostFlags;
2970 out->Console = in->Console;
2971 out->hcpsfailed = in->hcpsfailed;
2972 out->LastCall = in->LastCall;
2973 out->ActiveCall = in->ActiveCall;
2974 out->cpsCall = in->cpsCall;
2975 out->cblist = in->cblist;
2976 #ifdef FS_STATS_DETAILED
2977 out->InSameNetwork = in->InSameNetwork;
2981 /* index translation routines */
2983 h_OldToNew(struct fs_dump_state * state, afs_uint32 old, afs_uint32 * new)
2987 /* hosts use a zero-based index, so old==0 is valid */
2989 if (old >= state->h_map.len) {
2990 ViceLog(0, ("h_OldToNew: index %d is out of range\n", old));
2992 } else if (state->h_map.entries[old].old_idx != old) { /* sanity check */
2993 ViceLog(0, ("h_OldToNew: index %d points to an invalid host record\n", old));
2996 *new = state->h_map.entries[old].new_idx;
3002 #endif /* AFS_DEMAND_ATTACH_FS */
3006 * This counts the number of workstations, the number of active workstations,
3007 * and the number of workstations declared "down" (i.e. not heard from
3008 * recently). An active workstation has received a call since the cutoff
3009 * time argument passed.
3012 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
3014 register struct host *host;
3015 register int num = 0, active = 0, del = 0;
3018 for (host = hostList; host; host = host->next) {
3019 if (!(host->hostFlags & HOSTDELETED)) {
3021 if (host->ActiveCall > cutofftime)
3023 if (host->hostFlags & VENUSDOWN)
3035 } /*h_GetWorkStats */
3038 /*------------------------------------------------------------------------
3039 * PRIVATE h_ClassifyAddress
3042 * Given a target IP address and a candidate IP address (both
3043 * in host byte order), classify the candidate into one of three
3044 * buckets in relation to the target by bumping the counters passed
3048 * a_targetAddr : Target address.
3049 * a_candAddr : Candidate address.
3050 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
3051 * addresses are either in the same network
3052 * or the same subnet.
3053 * a_diffSubnetP : ...when the candidate is in a different
3055 * a_diffNetworkP : ...when the candidate is in a different
3062 * The target and candidate addresses are both in host byte
3063 * order, NOT network byte order, when passed in.
3067 *------------------------------------------------------------------------*/
3070 h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
3071 afs_int32 * a_sameNetOrSubnetP, afs_int32 * a_diffSubnetP,
3072 afs_int32 * a_diffNetworkP)
3073 { /*h_ClassifyAddress */
3075 afs_uint32 targetNet;
3076 afs_uint32 targetSubnet;
3078 afs_uint32 candSubnet;
3081 * Put bad values into the subnet info to start with.
3083 targetSubnet = (afs_uint32) 0;
3084 candSubnet = (afs_uint32) 0;
3087 * Pull out the network and subnetwork numbers from the target
3088 * and candidate addresses. We can short-circuit this whole
3089 * affair if the target and candidate addresses are not of the
3092 if (IN_CLASSA(a_targetAddr)) {
3093 if (!(IN_CLASSA(a_candAddr))) {
3094 (*a_diffNetworkP)++;
3097 targetNet = a_targetAddr & IN_CLASSA_NET;
3098 candNet = a_candAddr & IN_CLASSA_NET;
3099 if (IN_SUBNETA(a_targetAddr))
3100 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
3101 if (IN_SUBNETA(a_candAddr))
3102 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
3103 } else if (IN_CLASSB(a_targetAddr)) {
3104 if (!(IN_CLASSB(a_candAddr))) {
3105 (*a_diffNetworkP)++;
3108 targetNet = a_targetAddr & IN_CLASSB_NET;
3109 candNet = a_candAddr & IN_CLASSB_NET;
3110 if (IN_SUBNETB(a_targetAddr))
3111 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
3112 if (IN_SUBNETB(a_candAddr))
3113 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
3114 } /*Class B target */
3115 else if (IN_CLASSC(a_targetAddr)) {
3116 if (!(IN_CLASSC(a_candAddr))) {
3117 (*a_diffNetworkP)++;
3120 targetNet = a_targetAddr & IN_CLASSC_NET;
3121 candNet = a_candAddr & IN_CLASSC_NET;
3124 * Note that class C addresses can't have subnets,
3125 * so we leave the defaults untouched.
3127 } /*Class C target */
3129 targetNet = a_targetAddr;
3130 candNet = a_candAddr;
3131 } /*Class D address */
3134 * Now, simply compare the extracted net and subnet values for
3135 * the two addresses (which at this point are known to be of the
3138 if (targetNet == candNet) {
3139 if (targetSubnet == candSubnet)
3140 (*a_sameNetOrSubnetP)++;
3144 (*a_diffNetworkP)++;
3146 } /*h_ClassifyAddress */
3149 /*------------------------------------------------------------------------
3150 * EXPORTED h_GetHostNetStats
3153 * Iterate through the host table, and classify each (non-deleted)
3154 * host entry into ``proximity'' categories (same net or subnet,
3155 * different subnet, different network).
3158 * a_numHostsP : Set to total number of (non-deleted) hosts.
3159 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
3160 * a_diffSubnetP : Set to # hosts on diff subnet as server.
3161 * a_diffNetworkP : Set to # hosts on diff network as server.
3167 * We only count non-deleted hosts. The storage pointed to by our
3168 * parameters is zeroed upon entry.
3172 *------------------------------------------------------------------------*/
3175 h_GetHostNetStats(afs_int32 * a_numHostsP, afs_int32 * a_sameNetOrSubnetP,
3176 afs_int32 * a_diffSubnetP, afs_int32 * a_diffNetworkP)
3177 { /*h_GetHostNetStats */
3179 register struct host *hostP; /*Ptr to current host entry */
3180 register afs_uint32 currAddr_HBO; /*Curr host addr, host byte order */
3183 * Clear out the storage pointed to by our parameters.
3185 *a_numHostsP = (afs_int32) 0;
3186 *a_sameNetOrSubnetP = (afs_int32) 0;
3187 *a_diffSubnetP = (afs_int32) 0;
3188 *a_diffNetworkP = (afs_int32) 0;
3191 for (hostP = hostList; hostP; hostP = hostP->next) {
3192 if (!(hostP->hostFlags & HOSTDELETED)) {
3194 * Bump the number of undeleted host entries found.
3195 * In classifying the current entry's address, make
3196 * sure to first convert to host byte order.
3199 currAddr_HBO = (afs_uint32) ntohl(hostP->host);
3200 h_ClassifyAddress(FS_HostAddr_HBO, currAddr_HBO,
3201 a_sameNetOrSubnetP, a_diffSubnetP,
3203 } /*Only look at non-deleted hosts */
3204 } /*For each host record hashed to this index */
3206 } /*h_GetHostNetStats */
3208 static afs_uint32 checktime;
3209 static afs_uint32 clientdeletetime;
3210 static struct AFSFid zerofid;
3214 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
3215 * Since it can serialize them, and pile up, it should be a separate LWP
3216 * from other events.
3219 CheckHost(register struct host *host, int held)
3221 register struct client *client;
3222 struct rx_connection *cb_conn = NULL;
3225 #ifdef AFS_DEMAND_ATTACH_FS
3226 /* kill the checkhost lwp ASAP during shutdown */
3228 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3230 return H_ENUMERATE_BAIL(held);
3235 /* Host is held by h_Enumerate */
3237 for (client = host->FirstClient; client; client = client->next) {
3238 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3239 client->deleted = 1;
3240 host->hostFlags |= CLIENTDELETED;
3243 if (host->LastCall < checktime) {
3245 host->hostFlags |= HWHO_INPROGRESS;
3246 if (!(host->hostFlags & HOSTDELETED)) {
3247 cb_conn = host->callback_rxcon;
3248 rx_GetConnection(cb_conn);
3249 if (host->LastCall < clientdeletetime) {
3250 host->hostFlags |= HOSTDELETED;
3251 if (!(host->hostFlags & VENUSDOWN)) {
3252 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3253 if (host->interface) {
3256 RXAFSCB_InitCallBackState3(cb_conn,
3262 RXAFSCB_InitCallBackState(cb_conn);
3265 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3268 (void)afs_inet_ntoa_r(host->host, hoststr);
3270 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3271 hoststr, ntohs(host->port)));
3272 host->hostFlags |= VENUSDOWN;
3274 /* Note: it's safe to delete hosts even if they have call
3275 * back state, because break delayed callbacks (called when a
3276 * message is received from the workstation) will always send a
3277 * break all call backs to the workstation if there is no
3282 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3284 (void)afs_inet_ntoa_r(host->host, hoststr);
3285 if (host->interface) {
3286 afsUUID uuid = host->interface->uuid;
3288 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3291 if (MultiProbeAlternateAddress_r(host)) {
3292 ViceLog(0,("CheckHost: Probing all interfaces of host %s:%d failed, code %d\n",
3293 hoststr, ntohs(host->port), code));
3294 host->hostFlags |= VENUSDOWN;
3299 code = RXAFSCB_Probe(cb_conn);
3303 ("CheckHost: Probe failed for host %s:%d, code %d\n",
3304 hoststr, ntohs(host->port), code));
3305 host->hostFlags |= VENUSDOWN;
3311 rx_PutConnection(cb_conn);
3315 host->hostFlags &= ~HWHO_INPROGRESS;
3324 CheckHost_r(register struct host *host, int held, char *dummy)
3326 register struct client *client;
3327 struct rx_connection *cb_conn = NULL;
3330 /* Host is held by h_Enumerate_r */
3331 for (client = host->FirstClient; client; client = client->next) {
3332 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3333 client->deleted = 1;
3334 host->hostFlags |= CLIENTDELETED;
3337 if (host->LastCall < checktime) {
3339 if (!(host->hostFlags & HOSTDELETED)) {
3340 cb_conn = host->callback_rxcon;
3341 rx_GetConnection(cb_conn);
3342 if (host->LastCall < clientdeletetime) {
3343 host->hostFlags |= HOSTDELETED;
3344 if (!(host->hostFlags & VENUSDOWN)) {
3345 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3346 if (host->interface) {
3349 RXAFSCB_InitCallBackState3(cb_conn,
3355 RXAFSCB_InitCallBackState(cb_conn);
3358 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3361 (void)afs_inet_ntoa_r(host->host, hoststr);
3363 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3364 hoststr, ntohs(host->port)));
3365 host->hostFlags |= VENUSDOWN;
3367 /* Note: it's safe to delete hosts even if they have call
3368 * back state, because break delayed callbacks (called when a
3369 * message is received from the workstation) will always send a
3370 * break all call backs to the workstation if there is no
3375 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3377 (void)afs_inet_ntoa_r(host->host, hoststr);
3378 if (host->interface) {
3379 afsUUID uuid = host->interface->uuid;
3381 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3384 if (MultiProbeAlternateAddress_r(host)) {
3385 ViceLog(0,("CheckHost_r: Probing all interfaces of host %s:%d failed, code %d\n",
3386 hoststr, ntohs(host->port), code));
3387 host->hostFlags |= VENUSDOWN;
3392 code = RXAFSCB_Probe(cb_conn);
3396 ("CheckHost_r: Probe failed for host %s:%d, code %d\n",
3397 hoststr, ntohs(host->port), code));
3398 host->hostFlags |= VENUSDOWN;
3404 rx_PutConnection(cb_conn);
3416 * Set VenusDown for any hosts that have not had a call in 15 minutes and
3417 * don't respond to a probe. Note that VenusDown can only be cleared if
3418 * a message is received from the host (see ServerLWP in file.c).
3419 * Delete hosts that have not had any calls in 1 hour, clients that
3420 * have not had any calls in 15 minutes.
3422 * This routine is called roughly every 5 minutes.
3427 afs_uint32 now = FT_ApproxTime();
3429 memset((char *)&zerofid, 0, sizeof(zerofid));
3431 * Send a probe to the workstation if it hasn't been heard from in
3434 checktime = now - 15 * 60;
3435 clientdeletetime = now - 120 * 60; /* 2 hours ago */
3438 h_Enumerate_r(CheckHost_r, hostList, NULL);
3443 * This is called with host locked and held. At this point, the
3444 * hostAddrHashTable should not have any entries for the alternate
3445 * interfaces. This function has to insert these entries in the
3446 * hostAddrHashTable.
3448 * The addresses in the interfaceAddr list are in host byte order.
3451 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
3458 struct Interface *interface;
3461 afs_uint16 port7001 = htons(7001);
3466 number = interf->numberOfInterfaces;
3467 myAddr = host->host; /* current interface address */
3468 myPort = host->port; /* current port */
3471 ("initInterfaceAddr : host %s:%d numAddr %d\n",
3472 afs_inet_ntoa_r(myAddr, hoststr), ntohs(myPort), number));
3474 /* validation checks */
3475 if (number < 0 || number > AFS_MAX_INTERFACE_ADDR) {
3477 ("Invalid number of alternate addresses is %d\n", number));
3482 * The client's notion of its own IP addresses is not reliable.
3484 * 1. The client list might contain private address ranges which
3485 * are likely to be re-used by many clients allocated addresses
3488 * 2. The client list will not include any public addresses that
3489 * are hidden by a NAT.
3491 * 3. Private address ranges that are exposed to the server will
3492 * be obtained from the rx connections that use them.
3494 * 4. Lists provided by the client are not necessarily truthful.
3495 * Many existing clients (UNIX) do not refresh the IP address
3496 * list as the actual assigned addresses change. The end result
3497 * is that they report the initial address list for the lifetime
3498 * of the process. In other words, a client can report addresses
3499 * that they are in fact not using. Adding these addresses to
3500 * the host interface list without verification is not only
3501 * pointless, it is downright dangerous.
3503 * We therefore do not add alternate addresses to the addr hash table.
3504 * We only use them for multi-rx callback breaks.
3508 * Convert IP addresses to network byte order, and remove
3509 * duplicate IP addresses from the interface list, and
3510 * determine whether or not the incoming addr/port is
3511 * listed. Note that if the address matches it is not
3512 * truly a match because the port number for the entries
3513 * in the interface list are port 7001 and the port number
3514 * for this connection might not be 7001.
3516 for (i = 0, count = 0, found = 0; i < number; i++) {
3517 interf->addr_in[i] = htonl(interf->addr_in[i]);
3518 for (j = 0; j < count; j++) {
3519 if (interf->addr_in[j] == interf->addr_in[i])
3523 interf->addr_in[count] = interf->addr_in[i];
3524 if (interf->addr_in[count] == myAddr &&
3532 * Allocate and initialize an interface structure for this host.
3535 interface = (struct Interface *)
3536 malloc(sizeof(struct Interface) +
3537 (sizeof(struct AddrPort) * (count - 1)));
3539 ViceLog(0, ("Failed malloc in initInterfaceAddr_r 1\n"));
3542 interface->numberOfInterfaces = count;
3544 interface = (struct Interface *)
3545 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * count));
3547 ViceLog(0, ("Failed malloc in initInterfaceAddr_r 2\n"));
3550 interface->numberOfInterfaces = count + 1;
3551 interface->interface[count].addr = myAddr;
3552 interface->interface[count].port = myPort;
3553 interface->interface[count].valid = 1;
3556 for (i = 0; i < count; i++) {
3558 interface->interface[i].addr = interf->addr_in[i];
3559 /* We store the port as 7001 because the addresses reported by
3560 * TellMeAboutYourself and WhoAreYou RPCs are only valid if they
3561 * are coming from fully connected hosts (no NAT/PATs)
3563 interface->interface[i].port = port7001;
3564 interface->interface[i].valid = 1; /* valid until a conflict is found */
3567 interface->uuid = interf->uuid;
3569 assert(!host->interface);
3570 host->interface = interface;
3572 afsUUID_to_string(&interface->uuid, uuidstr, 127);
3574 ViceLog(125, ("--- uuid %s\n", uuidstr));
3575 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
3576 ViceLog(125, ("--- alt address %s:%d\n",
3577 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
3578 ntohs(host->interface->interface[i].port)));
3584 /* deleted a HashChain structure for this address and host */
3585 /* returns 1 on success */
3587 h_DeleteHostFromAddrHashTable_r(afs_uint32 addr, afs_uint16 port, struct host *host)
3590 register struct h_AddrHashChain **hp, *th;
3592 for (hp = &hostAddrHashTable[h_HashIndex(addr)]; (th = *hp);) {
3593 assert(th->hostPtr);
3594 if (th->hostPtr == host && th->addr == addr && th->port == port) {
3608 ** prints out all alternate interface address for the host. The 'level'
3609 ** parameter indicates what level of debugging sets this output
3612 printInterfaceAddr(struct host *host, int level)
3617 if (host->interface) {
3618 /* check alternate addresses */
3619 number = host->interface->numberOfInterfaces;
3621 ViceLog(level, ("no-addresses "));
3623 for (i = 0; i < number; i++)
3624 ViceLog(level, ("%s:%d ", afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
3625 ntohs(host->interface->interface[i].port)));
3628 ViceLog(level, ("\n"));