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[3];
270 struct afsconf_dir *tdir;
271 struct ktc_token ttoken;
273 struct afsconf_cell info;
277 tdir = afsconf_Open(AFSDIR_SERVER_ETC_DIRPATH);
279 ViceLog(0, ("hpr_Initialize: Could not open configuration directory: %s", AFSDIR_SERVER_ETC_DIRPATH));
283 code = afsconf_GetLocalCell(tdir, cellstr, sizeof(cellstr));
285 ViceLog(0, ("hpr_Initialize: Could not get local cell. [%d]", code));
290 code = afsconf_GetCellInfo(tdir, cellstr, "afsprot", &info);
292 ViceLog(0, ("hpr_Initialize: Could not locate cell %s in %s/%s", cellstr, confDir, AFSDIR_CELLSERVDB_FILE));
299 ViceLog(0, ("hpr_Initialize: Could not initialize rx."));
308 /* Most callers use secLevel==1, however, the fileserver uses secLevel==2
309 * to force use of the KeyFile. secLevel == 0 implies -noauth was
311 if ((afsconf_GetLatestKey(tdir, 0, 0) == 0)) {
312 code = afsconf_ClientAuthSecure(tdir, &sc[2], &scIndex);
314 ViceLog(0, ("hpr_Initialize: clientauthsecure returns %d %s (so trying noauth)", code, afs_error_message(code)));
316 scIndex = 0; /* use noauth */
318 /* if there was a problem, an unauthenticated conn is returned */
321 struct ktc_principal sname;
322 strcpy(sname.cell, info.name);
323 sname.instance[0] = 0;
324 strcpy(sname.name, "afs");
325 code = ktc_GetToken(&sname, &ttoken, sizeof(ttoken), NULL);
329 if (ttoken.kvno >= 0 && ttoken.kvno <= 256)
330 /* this is a kerberos ticket, set scIndex accordingly */
333 ViceLog(0, ("hpr_Initialize: funny kvno (%d) in ticket, proceeding", ttoken.kvno));
337 rxkad_NewClientSecurityObject(rxkad_clear, &ttoken.sessionKey,
338 ttoken.kvno, ttoken.ticketLen,
342 if ((scIndex == 0) && (sc[0] == 0))
343 sc[0] = rxnull_NewClientSecurityObject();
345 ViceLog(0, ("hpr_Initialize: Could not get afs tokens, running unauthenticated. [%d]", code));
347 memset(serverconns, 0, sizeof(serverconns)); /* terminate list!!! */
348 for (i = 0; i < info.numServers; i++) {
350 rx_NewConnection(info.hostAddr[i].sin_addr.s_addr,
351 info.hostAddr[i].sin_port, PRSRV, sc[scIndex],
355 code = ubik_ClientInit(serverconns, uclient);
357 ViceLog(0, ("hpr_Initialize: ubik client init failed. [%d]", code));
360 code = rxs_Release(sc[scIndex]);
365 hpr_End(struct ubik_client *uclient)
370 code = ubik_ClientDestroy(uclient);
376 hpr_GetHostCPS(afs_int32 host, prlist *CPS)
378 #ifdef AFS_PTHREAD_ENV
379 register afs_int32 code;
381 struct ubik_client *uclient =
382 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
385 code = hpr_Initialize(&uclient);
387 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
393 code = ubik_PR_GetHostCPS(uclient, 0, host, CPS, &over);
394 if (code != PRSUCCESS)
397 /* do something about this, probably make a new call */
398 /* don't forget there's a hard limit in the interface */
400 "membership list for host id %d exceeds display limit\n",
405 return pr_GetHostCPS(host, CPS);
410 hpr_NameToId(namelist *names, idlist *ids)
412 #ifdef AFS_PTHREAD_ENV
413 register afs_int32 code;
414 register afs_int32 i;
415 struct ubik_client *uclient =
416 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
419 code = hpr_Initialize(&uclient);
421 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
426 for (i = 0; i < names->namelist_len; i++)
427 stolower(names->namelist_val[i]);
428 code = ubik_PR_NameToID(uclient, 0, names, ids);
431 return pr_NameToId(names, ids);
436 hpr_IdToName(idlist *ids, namelist *names)
438 #ifdef AFS_PTHREAD_ENV
439 register afs_int32 code;
440 struct ubik_client *uclient =
441 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
444 code = hpr_Initialize(&uclient);
446 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
451 code = ubik_PR_IDToName(uclient, 0, ids, names);
454 return pr_IdToName(ids, names);
459 hpr_GetCPS(afs_int32 id, prlist *CPS)
461 #ifdef AFS_PTHREAD_ENV
462 register afs_int32 code;
464 struct ubik_client *uclient =
465 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
468 code = hpr_Initialize(&uclient);
470 assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
476 code = ubik_PR_GetCPS(uclient, 0, id, CPS, &over);
477 if (code != PRSUCCESS)
480 /* do something about this, probably make a new call */
481 /* don't forget there's a hard limit in the interface */
482 fprintf(stderr, "membership list for id %d exceeds display limit\n",
487 return pr_GetCPS(id, CPS);
491 static short consolePort = 0;
494 h_Lock_r(register struct host *host)
504 * returns 1 if already locked
505 * else returns locks and returns 0
509 h_NBLock_r(register struct host *host)
511 struct Lock *hostLock = &host->lock;
516 if (!(hostLock->excl_locked) && !(hostLock->readers_reading))
517 hostLock->excl_locked = WRITE_LOCK;
521 LOCK_UNLOCK(hostLock);
530 #if FS_STATS_DETAILED
531 /*------------------------------------------------------------------------
532 * PRIVATE h_AddrInSameNetwork
535 * Given a target IP address and a candidate IP address (both
536 * in host byte order), return a non-zero value (1) if the
537 * candidate address is in a different network from the target
541 * a_targetAddr : Target address.
542 * a_candAddr : Candidate address.
545 * 1 if the candidate address is in the same net as the target,
549 * The target and candidate addresses are both in host byte
550 * order, NOT network byte order, when passed in. We return
551 * our value as a character, since that's the type of field in
552 * the host structure, where this info will be stored.
556 *------------------------------------------------------------------------*/
559 h_AddrInSameNetwork(afs_uint32 a_targetAddr, afs_uint32 a_candAddr)
560 { /*h_AddrInSameNetwork */
562 afs_uint32 targetNet;
566 * Pull out the network and subnetwork numbers from the target
567 * and candidate addresses. We can short-circuit this whole
568 * affair if the target and candidate addresses are not of the
571 if (IN_CLASSA(a_targetAddr)) {
572 if (!(IN_CLASSA(a_candAddr))) {
575 targetNet = a_targetAddr & IN_CLASSA_NET;
576 candNet = a_candAddr & IN_CLASSA_NET;
577 } else if (IN_CLASSB(a_targetAddr)) {
578 if (!(IN_CLASSB(a_candAddr))) {
581 targetNet = a_targetAddr & IN_CLASSB_NET;
582 candNet = a_candAddr & IN_CLASSB_NET;
583 } /*Class B target */
584 else if (IN_CLASSC(a_targetAddr)) {
585 if (!(IN_CLASSC(a_candAddr))) {
588 targetNet = a_targetAddr & IN_CLASSC_NET;
589 candNet = a_candAddr & IN_CLASSC_NET;
590 } /*Class C target */
592 targetNet = a_targetAddr;
593 candNet = a_candAddr;
594 } /*Class D address */
597 * Now, simply compare the extracted net values for the two addresses
598 * (which at this point are known to be of the same class)
600 if (targetNet == candNet)
605 } /*h_AddrInSameNetwork */
606 #endif /* FS_STATS_DETAILED */
609 /* Assumptions: called with held host */
611 h_gethostcps_r(register struct host *host, register afs_int32 now)
616 /* wait if somebody else is already doing the getCPS call */
617 while (host->hostFlags & HCPS_INPROGRESS) {
618 slept = 1; /* I did sleep */
619 host->hostFlags |= HCPS_WAITING; /* I am sleeping now */
620 #ifdef AFS_PTHREAD_ENV
621 pthread_cond_wait(&host->cond, &host_glock_mutex);
622 #else /* AFS_PTHREAD_ENV */
623 if ((code = LWP_WaitProcess(&(host->hostFlags))) != LWP_SUCCESS)
624 ViceLog(0, ("LWP_WaitProcess returned %d\n", code));
625 #endif /* AFS_PTHREAD_ENV */
629 host->hostFlags |= HCPS_INPROGRESS; /* mark as CPSCall in progress */
630 if (host->hcps.prlist_val)
631 free(host->hcps.prlist_val); /* this is for hostaclRefresh */
632 host->hcps.prlist_val = NULL;
633 host->hcps.prlist_len = 0;
634 host->cpsCall = slept ? (FT_ApproxTime()) : (now);
637 code = hpr_GetHostCPS(ntohl(host->host), &host->hcps);
642 * Although ubik_Call (called by pr_GetHostCPS) traverses thru all protection servers
643 * and reevaluates things if no sync server or quorum is found we could still end up
644 * with one of these errors. In such case we would like to reevaluate the rpc call to
645 * find if there's cps for this guy. We treat other errors (except network failures
646 * ones - i.e. code < 0) as an indication that there is no CPS for this host. Ideally
647 * we could like to deal this problem the other way around (i.e. if code == NOCPS
648 * ignore else retry next time) but the problem is that there're other errors (i.e.
649 * EPERM) for which we don't want to retry and we don't know the whole code list!
651 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC) {
653 * We would have preferred to use a while loop and try again since ops in protected
654 * acls for this host will fail now but they'll be reevaluated on any subsequent
655 * call. The attempt to wait for a quorum/sync site or network error won't work
656 * since this problems really should only occurs during a complete fileserver
657 * restart. Since the fileserver will start before the ptservers (and thus before
658 * quorums are complete) clients will be utilizing all the fileserver's lwps!!
660 host->hcpsfailed = 1;
662 ("Warning: GetHostCPS failed (%d) for %x (%s:%d); will retry\n",
663 code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
665 host->hcpsfailed = 0;
667 ("gethost: GetHostCPS failed (%d) for %x (%s:%d); ignored\n",
668 code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
670 if (host->hcps.prlist_val)
671 free(host->hcps.prlist_val);
672 host->hcps.prlist_val = NULL;
673 host->hcps.prlist_len = 0; /* Make sure it's zero */
675 host->hcpsfailed = 0;
677 host->hostFlags &= ~HCPS_INPROGRESS;
678 /* signal all who are waiting */
679 if (host->hostFlags & HCPS_WAITING) { /* somebody is waiting */
680 host->hostFlags &= ~HCPS_WAITING;
681 #ifdef AFS_PTHREAD_ENV
682 assert(pthread_cond_broadcast(&host->cond) == 0);
683 #else /* AFS_PTHREAD_ENV */
684 if ((code = LWP_NoYieldSignal(&(host->hostFlags))) != LWP_SUCCESS)
685 ViceLog(0, ("LWP_NoYieldSignal returns %d\n", code));
686 #endif /* AFS_PTHREAD_ENV */
690 /* args in net byte order */
692 h_flushhostcps(register afs_uint32 hostaddr, register afs_uint16 hport)
697 h_Lookup_r(hostaddr, hport, &host);
699 host->hcpsfailed = 1;
708 * Allocate a host. It will be identified by the peer (ip,port) info in the
709 * rx connection provided. The host is returned held and locked
711 #define DEF_ROPCONS 2115
714 h_Alloc_r(register struct rx_connection *r_con)
716 struct servent *serverentry;
719 #if FS_STATS_DETAILED
720 afs_uint32 newHostAddr_HBO; /*New host IP addr, in host byte order */
721 #endif /* FS_STATS_DETAILED */
725 host->host = rxr_HostOf(r_con);
726 host->port = rxr_PortOf(r_con);
728 h_AddHostToAddrHashTable_r(host->host, host->port, host);
730 if (consolePort == 0) { /* find the portal number for console */
731 #if defined(AFS_OSF_ENV)
732 serverentry = getservbyname("ropcons", "");
734 serverentry = getservbyname("ropcons", 0);
737 consolePort = serverentry->s_port;
739 consolePort = htons(DEF_ROPCONS); /* Use a default */
741 if (host->port == consolePort)
743 /* Make a callback channel even for the console, on the off chance that it
744 * makes a request that causes a break call back. It shouldn't. */
745 h_SetupCallbackConn_r(host);
746 now = host->LastCall = host->cpsCall = host->ActiveCall = FT_ApproxTime();
748 host->hcps.prlist_val = NULL;
749 host->hcps.prlist_len = 0;
750 host->interface = NULL;
752 host->hcpsfailed = 0; /* save cycles */
753 h_gethostcps(host); /* do this under host hold/lock */
755 host->FirstClient = NULL;
758 h_InsertList_r(host); /* update global host List */
759 #if FS_STATS_DETAILED
761 * Compare the new host's IP address (in host byte order) with ours
762 * (the File Server's), remembering if they are in the same network.
764 newHostAddr_HBO = (afs_uint32) ntohl(host->host);
765 host->InSameNetwork =
766 h_AddrInSameNetwork(FS_HostAddr_HBO, newHostAddr_HBO);
767 #endif /* FS_STATS_DETAILED */
774 /* Make a callback channel even for the console, on the off chance that it
775 * makes a request that causes a break call back. It shouldn't. */
777 h_SetupCallbackConn_r(struct host * host)
780 sc = rxnull_NewClientSecurityObject();
781 host->callback_rxcon =
782 rx_NewConnection(host->host, host->port, 1, sc, 0);
783 rx_SetConnDeadTime(host->callback_rxcon, 50);
784 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
788 * Lookup a host given an IP address and UDP port number.
789 * hostaddr and hport are in network order
790 * hostaddr and hport are in network order
791 * On return, refCount is incremented.
794 h_Lookup_r(afs_uint32 haddr, afs_uint16 hport, struct host **hostp)
797 struct host *host = NULL;
798 struct h_AddrHashChain *chain;
799 int index = h_HashIndex(haddr);
800 extern int hostaclRefresh;
803 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
804 host = chain->hostPtr;
806 if (!(host->hostFlags & HOSTDELETED) && chain->addr == haddr
807 && chain->port == hport) {
808 if ((host->hostFlags & HWHO_INPROGRESS) &&
809 h_threadquota(host->lock.num_waiting)) {
815 if (host->hostFlags & HOSTDELETED) {
822 now = FT_ApproxTime(); /* always evaluate "now" */
823 if (host->hcpsfailed || (host->cpsCall + hostaclRefresh < now)) {
825 * Every hostaclRefresh period (def 2 hrs) get the new
826 * membership list for the host. Note this could be the
827 * first time that the host is added to a group. Also
828 * here we also retry on previous legitimate hcps failures.
830 * If we get here refCount is elevated.
832 h_gethostcps_r(host, now);
842 /* Lookup a host given its UUID. */
844 h_LookupUuid_r(afsUUID * uuidp)
846 struct host *host = 0;
847 struct h_UuidHashChain *chain;
848 int index = h_UuidHashIndex(uuidp);
850 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
851 host = chain->hostPtr;
853 if (!(host->hostFlags & HOSTDELETED) && host->interface
854 && afs_uuid_equal(&host->interface->uuid, uuidp)) {
862 /* h_TossStuff_r: Toss anything in the host structure (the host or
863 * clients marked for deletion. Called from h_Release_r ONLY.
864 * To be called, there must be no holds, and either host->deleted
865 * or host->clientDeleted must be set.
868 h_TossStuff_r(register struct host *host)
870 register struct client **cp, *client;
872 /* if somebody still has this host held */
873 if (host->refCount > 0)
876 /* if somebody still has this host locked */
877 if (h_NBLock_r(host) != 0) {
880 ("Warning: h_TossStuff_r failed; Host %" AFS_PTR_FMT " (%s:%d) was locked.\n",
881 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
887 /* ASSUMPTION: rxi_FreeConnection() does not yield */
888 for (cp = &host->FirstClient; (client = *cp);) {
889 if ((host->hostFlags & HOSTDELETED) || client->deleted) {
891 ObtainWriteLockNoBlock(&client->lock, code);
895 ("Warning: h_TossStuff_r failed: Host %" AFS_PTR_FMT " (%s:%d) client %x was locked.\n",
896 host, afs_inet_ntoa_r(host->host, hoststr),
897 ntohs(host->port), client));
901 if (client->refCount) {
904 ("Warning: h_TossStuff_r failed: Host %" AFS_PTR_FMT " (%s:%d) client %x refcount %d.\n",
905 host, afs_inet_ntoa_r(host->host, hoststr),
906 ntohs(host->port), client, client->refCount));
907 /* This is the same thing we do if the host is locked */
908 ReleaseWriteLock(&client->lock);
911 client->CPS.prlist_len = 0;
912 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
913 free(client->CPS.prlist_val);
914 client->CPS.prlist_val = NULL;
915 CurrentConnections--;
917 ReleaseWriteLock(&client->lock);
923 /* We've just cleaned out all the deleted clients; clear the flag */
924 host->hostFlags &= ~CLIENTDELETED;
926 if (host->hostFlags & HOSTDELETED) {
927 register struct rx_connection *rxconn;
928 struct AddrPort hostAddrPort;
931 if (host->Console & 1)
933 if ((rxconn = host->callback_rxcon)) {
934 host->callback_rxcon = (struct rx_connection *)0;
935 rx_DestroyConnection(rxconn);
937 if (host->hcps.prlist_val)
938 free(host->hcps.prlist_val);
939 host->hcps.prlist_val = NULL;
940 host->hcps.prlist_len = 0;
941 DeleteAllCallBacks_r(host, 1);
942 host->hostFlags &= ~RESETDONE; /* just to be safe */
944 /* if alternate addresses do not exist */
945 if (!(host->interface)) {
946 h_DeleteHostFromAddrHashTable_r(host->host, host->port, host);
948 h_DeleteHostFromUuidHashTable_r(host);
949 h_DeleteHostFromAddrHashTable_r(host->host, host->port, host);
950 /* delete the hash entry for each valid alternate addresses */
951 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
952 hostAddrPort = host->interface->interface[i];
954 * if the interface addr/port is the primary, we already
955 * removed it. If the addr/port is not valid, its not
958 if (hostAddrPort.valid &&
959 (host->host != hostAddrPort.addr ||
960 host->port != hostAddrPort.port))
961 h_DeleteHostFromAddrHashTable_r(hostAddrPort.addr, hostAddrPort.port, host);
963 free(host->interface);
964 host->interface = NULL;
965 } /* if alternate address exists */
967 h_DeleteList_r(host); /* remove host from global host List */
974 /* h_Enumerate: Calls (*proc)(host, held, param) for at least each host in the
975 * system at the start of the enumeration (perhaps more). Hosts may be deleted
976 * (have delete flag set); ditto for clients. refCount is always incremented
977 * before (*proc) is called. The param flags is passed to (*proc) as the
978 * param flags, permitting (*proc) to stop the enumeration (BAIL).
980 * Needed? Why not always h_Hold_r and h_Release_r in (*proc), or even -never-
981 * h_Hold_r or h_Release_r in (*proc)?
983 * **The proc should return 0 if the host should be released, 1 if it should
984 * be held after enumeration.
987 h_Enumerate(int (*proc) (struct host*, int, void *), void *param)
989 register struct host *host, **list;
991 register int i, count;
994 if (hostCount == 0) {
998 list = (struct host **)malloc(hostCount * sizeof(struct host *));
1000 ViceLog(0, ("Failed malloc in h_Enumerate (list)\n"));
1003 flags = (int *)malloc(hostCount * sizeof(int));
1005 ViceLog(0, ("Failed malloc in h_Enumerate (flags)\n"));
1008 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
1012 if (count != hostCount) {
1013 ViceLog(0, ("h_Enumerate found %d of %d hosts\n", count, hostCount));
1014 } else if (host != NULL) {
1015 ViceLog(0, ("h_Enumerate found more than %d hosts\n", hostCount));
1016 ShutDownAndCore(PANIC);
1019 for (i = 0; i < count; i++) {
1020 flags[i] = (*proc) (list[i], flags[i], param);
1021 h_Release_r(list[i]);
1022 /* bail out of the enumeration early */
1023 if (H_ENUMERATE_ISSET_BAIL(flags[i]))
1027 free((void *)flags);
1031 /* h_Enumerate_r (revised):
1032 * Calls (*proc)(host, flags, param) for each host in hostList, starting
1033 * at enumstart. Called only under H_LOCK. Hosts may be deleted (have
1034 * delete flag set); ditto for clients. refCount is always incremented
1035 * before (*proc) is called. The param flags is passed to (*proc) as the
1036 * param flags, permitting (*proc) to stop the enumeration (BAIL).
1038 * Needed? Why not always h_Hold_r and h_Release_r in (*proc), or even -never-
1039 * h_Hold_r or h_Release_r in (*proc)?
1041 * **The proc should return 0 if the host should be released, 1 if it should
1042 * be held after enumeration.
1045 h_Enumerate_r(int (*proc) (struct host *, int, void *),
1046 struct host *enumstart, void *param)
1048 register struct host *host, *next;
1053 if (hostCount == 0) {
1056 h_Hold_r(enumstart);
1057 for (count = 0, host = enumstart; host && count < hostCount; host = next, flags = nflags, count++) {
1059 if (next && !H_ENUMERATE_ISSET_BAIL(flags))
1061 flags = (*proc) (host, flags, param);
1062 if (H_ENUMERATE_ISSET_BAIL(flags)) {
1063 h_Release_r(host); /* this might free up the host */
1066 h_Release_r(host); /* this might free up the host */
1069 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", hostCount));
1070 ShutDownAndCore(PANIC);
1072 } /*h_Enumerate_r */
1075 /* inserts a new HashChain structure corresponding to this UUID */
1077 h_AddHostToUuidHashTable_r(struct afsUUID *uuid, struct host *host)
1080 struct h_UuidHashChain *chain;
1081 char uuid1[128], uuid2[128];
1084 /* hash into proper bucket */
1085 index = h_UuidHashIndex(uuid);
1087 /* don't add the same entry multiple times */
1088 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
1089 if (!chain->hostPtr)
1092 if (chain->hostPtr->interface &&
1093 afs_uuid_equal(&chain->hostPtr->interface->uuid, uuid)) {
1094 if (LogLevel >= 125) {
1095 afsUUID_to_string(&chain->hostPtr->interface->uuid, uuid1,
1097 afsUUID_to_string(uuid, uuid2, 127);
1098 ViceLog(125, ("h_AddHostToUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s) exists as %s:%d (uuid %s)\n",
1100 afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1101 ntohs(chain->hostPtr->port), uuid2));
1107 /* insert into beginning of list for this bucket */
1108 chain = (struct h_UuidHashChain *)malloc(sizeof(struct h_UuidHashChain));
1110 ViceLog(0, ("Failed malloc in h_AddHostToUuidHashTable_r\n"));
1113 chain->hostPtr = host;
1114 chain->next = hostUuidHashTable[index];
1115 hostUuidHashTable[index] = chain;
1118 afsUUID_to_string(uuid, uuid2, 127);
1120 ("h_AddHostToUuidHashTable_r: host %" AFS_PTR_FMT " (%s:%d) added as uuid %s\n",
1121 host, afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1122 ntohs(chain->hostPtr->port), uuid));
1125 /* deletes a HashChain structure corresponding to this host */
1127 h_DeleteHostFromUuidHashTable_r(struct host *host)
1130 register struct h_UuidHashChain **uhp, *uth;
1134 if (!host->interface)
1137 /* hash into proper bucket */
1138 index = h_UuidHashIndex(&host->interface->uuid);
1140 if (LogLevel >= 125)
1141 afsUUID_to_string(&host->interface->uuid, uuid1, 127);
1142 for (uhp = &hostUuidHashTable[index]; (uth = *uhp); uhp = &uth->next) {
1143 assert(uth->hostPtr);
1144 if (uth->hostPtr == host) {
1146 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d)\n",
1147 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1148 ntohs(host->port)));
1155 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d) not found\n",
1156 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1157 ntohs(host->port)));
1161 /* inserts a new HashChain structure corresponding to this address */
1163 h_AddHostToAddrHashTable_r(afs_uint32 addr, afs_uint16 port, struct host *host)
1166 struct h_AddrHashChain *chain;
1169 /* hash into proper bucket */
1170 index = h_HashIndex(addr);
1172 /* don't add the same address:port pair entry multiple times */
1173 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1174 if (chain->addr == addr && chain->port == port) {
1175 if (chain->hostPtr == host) {
1177 ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) already hashed\n",
1178 host, afs_inet_ntoa_r(chain->addr, hoststr),
1179 ntohs(chain->port)));
1182 if (!(chain->hostPtr->hostFlags & HOSTDELETED)) {
1184 ("h_AddHostToAddrHashTable_r: refusing to hash host %" AFS_PTR_FMT ", %"
1185 AFS_PTR_FMT " (%s:%d) already hashed\n",
1186 host, chain->hostPtr, afs_inet_ntoa_r(chain->addr, hoststr),
1187 ntohs(chain->port)));
1193 /* insert into beginning of list for this bucket */
1194 chain = (struct h_AddrHashChain *)malloc(sizeof(struct h_AddrHashChain));
1196 ViceLog(0, ("Failed malloc in h_AddHostToAddrHashTable_r\n"));
1199 chain->hostPtr = host;
1200 chain->next = hostAddrHashTable[index];
1203 hostAddrHashTable[index] = chain;
1204 ViceLog(125, ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " added as %s:%d\n",
1205 host, afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1209 * This is called with host locked and held.
1210 * It is called to either validate or add an additional interface
1211 * address/port on the specified host.
1213 * All addresses are in network byte order.
1216 addInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1220 struct Interface *interface;
1221 char hoststr[16], hoststr2[16];
1224 assert(host->interface);
1227 * Make sure this address is on the list of known addresses
1230 number = host->interface->numberOfInterfaces;
1231 for (i = 0; i < number; i++) {
1232 if (host->interface->interface[i].addr == addr &&
1233 host->interface->interface[i].port == port) {
1235 ("addInterfaceAddr : found host %" AFS_PTR_FMT " (%s:%d) adding %s:%d%s\n",
1236 host, afs_inet_ntoa_r(host->host, hoststr),
1237 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1238 ntohs(port), host->interface->interface[i].valid ? "" :
1241 if (host->interface->interface[i].valid == 0) {
1242 host->interface->interface[i].valid = 1;
1243 h_AddHostToAddrHashTable_r(addr, port, host);
1249 ViceLog(125, ("addInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) adding %s:%d\n",
1250 host, afs_inet_ntoa_r(host->host, hoststr),
1251 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1254 interface = (struct Interface *)
1255 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * number));
1257 ViceLog(0, ("Failed malloc in addInterfaceAddr_r\n"));
1260 interface->numberOfInterfaces = number + 1;
1261 interface->uuid = host->interface->uuid;
1262 for (i = 0; i < number; i++)
1263 interface->interface[i] = host->interface->interface[i];
1265 /* Add the new valid interface */
1266 interface->interface[number].addr = addr;
1267 interface->interface[number].port = port;
1268 interface->interface[number].valid = 1;
1269 h_AddHostToAddrHashTable_r(addr, port, host);
1270 free(host->interface);
1271 host->interface = interface;
1278 * This is called with host locked and held.
1280 * All addresses are in network byte order.
1283 removeInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1287 struct Interface *interface;
1288 char hoststr[16], hoststr2[16];
1291 assert(host->interface);
1293 ViceLog(125, ("removeInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1294 host, afs_inet_ntoa_r(host->host, hoststr),
1295 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1299 * Make sure this address is on the list of known addresses
1302 interface = host->interface;
1303 number = host->interface->numberOfInterfaces;
1304 for (i = 0; i < number; i++) {
1305 if (interface->interface[i].addr == addr &&
1306 interface->interface[i].port == port) {
1307 if (interface->interface[i].valid)
1308 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1310 for (; i < number; i++) {
1311 interface->interface[i] = interface->interface[i+1];
1313 interface->numberOfInterfaces = number;
1322 * This is called with host locked and held.
1324 * All addresses are in network byte order.
1327 invalidateInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1331 struct Interface *interface;
1332 char hoststr[16], hoststr2[16];
1335 assert(host->interface);
1337 ViceLog(125, ("invalidateInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1338 host, afs_inet_ntoa_r(host->host, hoststr),
1339 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1343 * Make sure this address is on the list of known addresses
1346 interface = host->interface;
1347 number = host->interface->numberOfInterfaces;
1348 for (i = 0; i < number; i++) {
1349 if (interface->interface[i].addr == addr &&
1350 interface->interface[i].port == port) {
1351 if (interface->interface[i].valid) {
1352 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1353 interface->interface[i].valid = 0;
1364 * This is called with host locked and held. This function differs
1365 * from removeInterfaceAddr_r in that it is called when the address
1366 * is being removed from the host regardless of whether or not there
1367 * is an interface list for the host. This function will delete the
1368 * host if there are no addresses left on it.
1370 * All addresses are in network byte order.
1373 removeAddress_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1376 char hoststr[16], hoststr2[16];
1377 struct rx_connection *rxconn;
1379 if (!host->interface || host->interface->numberOfInterfaces == 1) {
1380 if (host->host == addr && host->port == port) {
1382 ("Removing only address for host %" AFS_PTR_FMT " (%s:%d), deleting host.\n",
1383 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1384 host->hostFlags |= HOSTDELETED;
1386 * Do not remove the primary addr/port from the hash table.
1387 * It will be ignored due to the HOSTDELETED flag and will
1388 * be removed when h_TossStuff_r() cleans up the HOSTDELETED
1389 * host. Removing it here will only result in a search for
1390 * the host/addr/port in the hash chain which will fail.
1394 ("Removing address that does not belong to host %" AFS_PTR_FMT " (%s:%d).\n",
1395 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1398 if (host->host == addr && host->port == port) {
1399 removeInterfaceAddr_r(host, addr, port);
1401 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1402 if (host->interface->interface[i].valid) {
1404 ("Removed address for host %" AFS_PTR_FMT " (%s:%d), new primary interface %s:%d.\n",
1405 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1406 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr2),
1407 ntohs(host->interface->interface[i].port)));
1408 host->host = host->interface->interface[i].addr;
1409 host->port = host->interface->interface[i].port;
1410 h_AddHostToAddrHashTable_r(host->host, host->port, host);
1415 if (i == host->interface->numberOfInterfaces) {
1417 ("Removed only address for host %" AFS_PTR_FMT " (%s:%d), no valid alternate interfaces, deleting host.\n",
1418 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1419 host->hostFlags |= HOSTDELETED;
1420 /* addr/port was removed from the hash table */
1424 rxconn = host->callback_rxcon;
1425 host->callback_rxcon = NULL;
1428 rx_DestroyConnection(rxconn);
1433 sc = rxnull_NewClientSecurityObject();
1434 host->callback_rxcon =
1435 rx_NewConnection(host->host, host->port, 1, sc, 0);
1436 rx_SetConnDeadTime(host->callback_rxcon, 50);
1437 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
1440 /* not the primary addr/port, just invalidate it */
1441 invalidateInterfaceAddr_r(host, addr, port);
1448 h_threadquota(int waiting)
1453 } else if (lwps > 32) {
1456 } else if (lwps > 16) {
1466 /* If found, host is returned with refCount incremented */
1468 h_GetHost_r(struct rx_connection *tcon)
1471 struct host *oldHost;
1473 struct interfaceAddr interf;
1474 int interfValid = 0;
1475 struct Identity *identP = NULL;
1478 char hoststr[16], hoststr2[16];
1480 struct rx_connection *cb_conn = NULL;
1481 struct rx_connection *cb_in = NULL;
1483 caps.Capabilities_val = NULL;
1485 haddr = rxr_HostOf(tcon);
1486 hport = rxr_PortOf(tcon);
1489 rx_DestroyConnection(cb_in);
1492 if (caps.Capabilities_val)
1493 free(caps.Capabilities_val);
1494 caps.Capabilities_val = NULL;
1495 caps.Capabilities_len = 0;
1498 if (h_Lookup_r(haddr, hport, &host))
1500 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
1501 if (host && !identP && !(host->Console & 1)) {
1502 /* This is a new connection, and we already have a host
1503 * structure for this address. Verify that the identity
1504 * of the caller matches the identity in the host structure.
1506 if ((host->hostFlags & HWHO_INPROGRESS) &&
1507 h_threadquota(host->lock.num_waiting)) {
1513 if (!(host->hostFlags & ALTADDR) ||
1514 (host->hostFlags & HOSTDELETED)) {
1515 /* Another thread is doing initialization
1516 * or this host was deleted while we
1517 * waited for the lock. */
1520 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1521 host, afs_inet_ntoa_r(host->host, hoststr),
1522 ntohs(host->port)));
1526 host->hostFlags |= HWHO_INPROGRESS;
1527 host->hostFlags &= ~ALTADDR;
1529 /* We received a new connection from an IP address/port
1530 * that is associated with 'host' but the address/port of
1531 * the callback connection does not have to match it.
1532 * If there is a match, we can use the existing callback
1533 * connection to verify the UUID. If they do not match
1534 * we need to use a new callback connection to verify the
1535 * UUID of the incoming caller and perhaps use the old
1536 * callback connection to verify that the old address/port
1540 cb_conn = host->callback_rxcon;
1541 rx_GetConnection(cb_conn);
1543 if (haddr == host->host && hport == host->port) {
1544 /* The existing callback connection matches the
1545 * incoming connection so just use it.
1548 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1549 if (code == RXGEN_OPCODE)
1550 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1552 /* We do not have a match. Create a new connection
1553 * for the new addr/port and use multi_Rx to probe
1554 * both of them simultaneously.
1557 sc = rxnull_NewClientSecurityObject();
1558 cb_in = rx_NewConnection(haddr, hport, 1, sc, 0);
1559 rx_SetConnDeadTime(cb_in, 50);
1560 rx_SetConnHardDeadTime(cb_in, AFS_HARDDEADTIME);
1563 RXAFSCB_TellMeAboutYourself(cb_in, &interf, &caps);
1564 if (code == RXGEN_OPCODE)
1565 code = RXAFSCB_WhoAreYou(cb_in, &interf);
1567 rx_PutConnection(cb_conn);
1570 if ((code == RXGEN_OPCODE) ||
1571 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1572 identP = (struct Identity *)malloc(sizeof(struct Identity));
1574 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1578 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1579 if (cb_in == NULL) {
1580 /* The host on this connection was unable to respond to
1581 * the WhoAreYou. We will treat this as a new connection
1582 * from the existing host. The worst that can happen is
1583 * that we maintain some extra callback state information */
1584 if (host->interface) {
1586 ("Host %" AFS_PTR_FMT " (%s:%d) used to support WhoAreYou, deleting.\n",
1588 afs_inet_ntoa_r(host->host, hoststr),
1589 ntohs(host->port)));
1590 host->hostFlags |= HOSTDELETED;
1591 host->hostFlags &= ~HWHO_INPROGRESS;
1598 /* The incoming connection does not support WhoAreYou but
1599 * the original one might have. Use removeAddress_r() to
1600 * remove this addr/port from the host that was found.
1601 * If there are no more addresses left for the host it
1602 * will be deleted. Then we retry.
1604 removeAddress_r(host, haddr, hport);
1605 host->hostFlags &= ~HWHO_INPROGRESS;
1606 host->hostFlags |= ALTADDR;
1612 } else if (code == 0) {
1614 identP = (struct Identity *)malloc(sizeof(struct Identity));
1616 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1620 identP->uuid = interf.uuid;
1621 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1622 /* Check whether the UUID on this connection matches
1623 * the UUID in the host structure. If they don't match
1624 * then this is not the same host as before. */
1625 if (!host->interface
1626 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid)) {
1629 ("Uuid doesn't match connection (%s:%d).\n",
1630 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport)));
1631 removeAddress_r(host, haddr, hport);
1634 ("Uuid doesn't match host %" AFS_PTR_FMT " (%s:%d).\n",
1635 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1637 removeAddress_r(host, host->host, host->port);
1639 host->hostFlags &= ~HWHO_INPROGRESS;
1640 host->hostFlags |= ALTADDR;
1646 /* the UUID matched the client at the incoming addr/port
1647 * but this is not the address of the active callback
1648 * connection. Try that connection and see if the client
1649 * is still there and if the reported UUID is the same.
1652 afsUUID uuid = host->interface->uuid;
1653 cb_conn = host->callback_rxcon;
1654 rx_GetConnection(cb_conn);
1655 rx_SetConnDeadTime(cb_conn, 2);
1656 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1658 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1660 rx_SetConnDeadTime(cb_conn, 50);
1661 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1662 rx_PutConnection(cb_conn);
1665 /* The primary address is either not responding or
1666 * is not the client we are looking for. Need to
1667 * remove the primary address and add swap in the new
1668 * callback connection, and destroy the old one.
1670 struct rx_connection *rxconn;
1671 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
1673 afs_inet_ntoa_r(host->host, hoststr),
1674 ntohs(host->port),code2));
1677 * make sure we add and then remove. otherwise, we
1678 * might end up with no valid interfaces after the
1679 * remove and the host will have been marked deleted.
1681 addInterfaceAddr_r(host, haddr, hport);
1682 removeInterfaceAddr_r(host, host->host, host->port);
1685 rxconn = host->callback_rxcon;
1686 host->callback_rxcon = cb_in;
1691 * If rx_DestroyConnection calls h_FreeConnection we
1692 * will deadlock on the host_glock_mutex. Work around
1693 * the problem by unhooking the client from the
1694 * connection before destroying the connection.
1696 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
1697 rx_DestroyConnection(rxconn);
1703 /* A callback to the incoming connection address is failing.
1704 * Assume that the addr/port is no longer associated with the host
1705 * returned by h_Lookup_r.
1708 ("CB: WhoAreYou failed for connection (%s:%d) , error %d\n",
1709 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport), code));
1710 removeAddress_r(host, haddr, hport);
1711 host->hostFlags &= ~HWHO_INPROGRESS;
1712 host->hostFlags |= ALTADDR;
1716 rx_DestroyConnection(cb_in);
1721 ("CB: WhoAreYou failed for host %" AFS_PTR_FMT " (%s:%d), error %d\n",
1722 host, afs_inet_ntoa_r(host->host, hoststr),
1723 ntohs(host->port), code));
1724 host->hostFlags |= VENUSDOWN;
1727 if (caps.Capabilities_val
1728 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1729 host->hostFlags |= HERRORTRANS;
1731 host->hostFlags &= ~(HERRORTRANS);
1732 host->hostFlags |= ALTADDR;
1733 host->hostFlags &= ~HWHO_INPROGRESS;
1736 if (!(host->hostFlags & ALTADDR)) {
1737 /* another thread is doing the initialisation */
1739 ("Host %" AFS_PTR_FMT " (%s:%d) waiting for host-init to complete\n",
1740 host, afs_inet_ntoa_r(host->host, hoststr),
1741 ntohs(host->port)));
1745 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1746 host, afs_inet_ntoa_r(host->host, hoststr),
1747 ntohs(host->port)));
1751 /* We need to check whether the identity in the host structure
1752 * matches the identity on the connection. If they don't match
1753 * then treat this a new host. */
1754 if (!(host->Console & 1)
1755 && ((!identP->valid && host->interface)
1756 || (identP->valid && !host->interface)
1758 && !afs_uuid_equal(&identP->uuid,
1759 &host->interface->uuid)))) {
1760 char uuid1[128], uuid2[128];
1762 afsUUID_to_string(&identP->uuid, uuid1, 127);
1763 if (host->interface)
1764 afsUUID_to_string(&host->interface->uuid, uuid2, 127);
1766 ("CB: new identity for host %" AFS_PTR_FMT " (%s:%d), deleting(%x %x %s %s)\n",
1767 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1768 identP->valid, host->interface,
1769 identP->valid ? uuid1 : "no_uuid",
1770 host->interface ? uuid2 : "no_uuid"));
1772 /* The host in the cache is not the host for this connection */
1774 host->hostFlags |= HOSTDELETED;
1780 host = h_Alloc_r(tcon); /* returned held and locked */
1781 h_gethostcps_r(host, FT_ApproxTime());
1782 if (!(host->Console & 1)) {
1784 cb_conn = host->callback_rxcon;
1785 rx_GetConnection(cb_conn);
1786 host->hostFlags |= HWHO_INPROGRESS;
1789 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1790 if (code == RXGEN_OPCODE)
1791 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1792 rx_PutConnection(cb_conn);
1795 if ((code == RXGEN_OPCODE) ||
1796 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1799 (struct Identity *)malloc(sizeof(struct Identity));
1804 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1809 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1811 ("Host %" AFS_PTR_FMT " (%s:%d) does not support WhoAreYou.\n",
1812 host, afs_inet_ntoa_r(host->host, hoststr),
1813 ntohs(host->port)));
1815 } else if (code == 0) {
1818 (struct Identity *)malloc(sizeof(struct Identity));
1823 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1828 identP->uuid = interf.uuid;
1830 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1832 ("WhoAreYou success on host %" AFS_PTR_FMT " (%s:%d)\n",
1833 host, afs_inet_ntoa_r(host->host, hoststr),
1834 ntohs(host->port)));
1836 if (code == 0 && !identP->valid) {
1837 cb_conn = host->callback_rxcon;
1838 rx_GetConnection(cb_conn);
1840 code = RXAFSCB_InitCallBackState(cb_conn);
1841 rx_PutConnection(cb_conn);
1844 } else if (code == 0) {
1845 oldHost = h_LookupUuid_r(&identP->uuid);
1850 if (oldHost->hostFlags & HOSTDELETED) {
1851 h_Unlock_r(oldHost);
1852 h_Release_r(oldHost);
1860 oldHost->hostFlags |= HWHO_INPROGRESS;
1862 if (oldHost->interface) {
1864 afsUUID uuid = oldHost->interface->uuid;
1865 cb_conn = oldHost->callback_rxcon;
1866 rx_GetConnection(cb_conn);
1867 rx_SetConnDeadTime(cb_conn, 2);
1868 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1870 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1872 rx_SetConnDeadTime(cb_conn, 50);
1873 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1874 rx_PutConnection(cb_conn);
1877 /* The primary address is either not responding or
1878 * is not the client we are looking for.
1879 * MultiProbeAlternateAddress_r() will remove the
1880 * alternate interfaces that do not have the same
1882 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
1884 afs_inet_ntoa_r(oldHost->host, hoststr),
1885 ntohs(oldHost->port),code2));
1886 MultiProbeAlternateAddress_r(oldHost);
1893 /* This is a new address for an existing host. Update
1894 * the list of interfaces for the existing host and
1895 * delete the host structure we just allocated. */
1897 /* prevent warnings while manipulating interface lists */
1898 host->hostFlags |= HOSTDELETED;
1900 if (oldHost->host != haddr || oldHost->port != hport) {
1901 struct rx_connection *rxconn;
1904 ("CB: Host %" AFS_PTR_FMT " (%s:%d) has new addr %s:%d\n",
1906 afs_inet_ntoa_r(oldHost->host, hoststr2),
1907 ntohs(oldHost->port),
1908 afs_inet_ntoa_r(haddr, hoststr),
1911 * add then remove. otherwise the host may get marked
1912 * deleted if we removed the only valid address.
1914 addInterfaceAddr_r(oldHost, haddr, hport);
1915 if (probefail || oldHost->host == haddr) {
1917 * The probe failed which means that the old
1918 * address is either unreachable or is not the
1919 * same host we were just contacted by. We will
1920 * also remove addresses if only the port has
1921 * changed because that indicates the client
1924 removeInterfaceAddr_r(oldHost, oldHost->host, oldHost->port);
1927 struct Interface *interface = oldHost->interface;
1928 int number = oldHost->interface->numberOfInterfaces;
1929 for (i = 0; i < number; i++) {
1930 if (interface->interface[i].addr == haddr &&
1931 interface->interface[i].port != hport) {
1933 * We have just been contacted by a client
1934 * that has been seen from behind a NAT
1935 * and at least one other address.
1937 removeInterfaceAddr_r(oldHost, haddr,
1938 interface->interface[i].port);
1943 h_AddHostToAddrHashTable_r(haddr, hport, oldHost);
1944 oldHost->host = haddr;
1945 oldHost->port = hport;
1946 rxconn = oldHost->callback_rxcon;
1947 oldHost->callback_rxcon = host->callback_rxcon;
1948 host->callback_rxcon = rxconn;
1950 /* don't destroy rxconn here; let h_TossStuff_r
1951 * take care of that via h_Release_r below */
1953 host->hostFlags &= ~HWHO_INPROGRESS;
1955 /* release host because it was allocated by h_Alloc_r */
1958 /* the new host is held and locked */
1960 /* This really is a new host */
1961 h_AddHostToUuidHashTable_r(&identP->uuid, host);
1962 cb_conn = host->callback_rxcon;
1963 rx_GetConnection(cb_conn);
1966 RXAFSCB_InitCallBackState3(cb_conn,
1968 rx_PutConnection(cb_conn);
1973 ("InitCallBackState3 success on host %" AFS_PTR_FMT " (%s:%d)\n",
1974 host, afs_inet_ntoa_r(host->host, hoststr),
1975 ntohs(host->port)));
1976 assert(interfValid == 1);
1977 initInterfaceAddr_r(host, &interf);
1983 ("CB: RCallBackConnectBack failed for %" AFS_PTR_FMT " (%s:%d)\n",
1984 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1985 host->hostFlags |= VENUSDOWN;
1988 ("CB: RCallBackConnectBack succeeded for %" AFS_PTR_FMT " (%s:%d)\n",
1989 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1990 host->hostFlags |= RESETDONE;
1993 if (caps.Capabilities_val
1994 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1995 host->hostFlags |= HERRORTRANS;
1997 host->hostFlags &= ~(HERRORTRANS);
1998 host->hostFlags |= ALTADDR; /* host structure initialization complete */
1999 host->hostFlags &= ~HWHO_INPROGRESS;
2004 if (caps.Capabilities_val)
2005 free(caps.Capabilities_val);
2006 caps.Capabilities_val = NULL;
2007 caps.Capabilities_len = 0;
2009 rx_DestroyConnection(cb_in);
2017 static char localcellname[PR_MAXNAMELEN + 1];
2018 char local_realms[AFS_NUM_LREALMS][AFS_REALM_SZ];
2019 int num_lrealms = -1;
2023 h_InitHostPackage(void)
2025 memset(&nulluuid, 0, sizeof(afsUUID));
2026 afsconf_GetLocalCell(confDir, localcellname, PR_MAXNAMELEN);
2027 if (num_lrealms == -1) {
2029 for (i=0; i<AFS_NUM_LREALMS; i++) {
2030 if (afs_krb_get_lrealm(local_realms[i], i) != 0 /*KSUCCESS*/)
2036 ("afs_krb_get_lrealm failed, using %s.\n",
2038 strncpy(local_realms[0], localcellname, AFS_REALM_SZ);
2044 /* initialize the rest of the local realms to nullstring for debugging */
2045 for (; i<AFS_NUM_LREALMS; i++)
2046 local_realms[i][0] = '\0';
2048 rxcon_ident_key = rx_KeyCreate((rx_destructor_t) free);
2049 rxcon_client_key = rx_KeyCreate((rx_destructor_t) 0);
2050 #ifdef AFS_PTHREAD_ENV
2051 assert(pthread_mutex_init(&host_glock_mutex, NULL) == 0);
2052 #endif /* AFS_PTHREAD_ENV */
2056 MapName_r(char *aname, char *acell, afs_int32 * aval)
2061 afs_int32 anamelen, cnamelen;
2065 anamelen = strlen(aname);
2066 if (anamelen >= PR_MAXNAMELEN)
2067 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
2069 lnames.namelist_len = 1;
2070 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
2071 lids.idlist_len = 0;
2072 lids.idlist_val = NULL;
2074 cnamelen = strlen(acell);
2076 if (afs_is_foreign_ticket_name(aname, NULL, acell, localcellname)) {
2078 ("MapName: cell is foreign. cell=%s, localcell=%s, localrealms={%s,%s,%s,%s}\n",
2079 acell, localcellname, local_realms[0],local_realms[1],local_realms[2],local_realms[3]));
2080 if ((anamelen + cnamelen + 1) >= PR_MAXNAMELEN) {
2082 ("MapName: Name too long, using AnonymousID for %s@%s\n",
2084 *aval = AnonymousID;
2087 foreign = 1; /* attempt cross-cell authentication */
2088 tname = (char *)malloc(PR_MAXNAMELEN);
2090 ViceLog(0, ("Failed malloc in MapName_r\n"));
2093 strcpy(tname, aname);
2094 tname[anamelen] = '@';
2095 strcpy(tname + anamelen + 1, acell);
2096 lnames.namelist_val = (prname *) tname;
2101 code = hpr_NameToId(&lnames, &lids);
2104 if (lids.idlist_val) {
2105 *aval = lids.idlist_val[0];
2106 if (*aval == AnonymousID) {
2108 ("MapName: NameToId on %s returns anonymousID\n",
2109 lnames.namelist_val));
2111 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
2114 ("MapName: NameToId on '%s' is unknown\n",
2115 lnames.namelist_val));
2121 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
2129 /* NOTE: this returns the client with a Write lock and a refCount */
2131 h_ID2Client(afs_int32 vid)
2133 register struct client *client;
2134 register struct host *host;
2138 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
2139 if (host->hostFlags & HOSTDELETED)
2141 for (client = host->FirstClient; client; client = client->next) {
2142 if (!client->deleted && client->ViceId == vid) {
2145 ObtainWriteLock(&client->lock);
2150 if (count != hostCount) {
2151 ViceLog(0, ("h_ID2Client found %d of %d hosts\n", count, hostCount));
2152 } else if (host != NULL) {
2153 ViceLog(0, ("h_ID2Client found more than %d hosts\n", hostCount));
2154 ShutDownAndCore(PANIC);
2162 * Called by the server main loop. Returns a h_Held client, which must be
2163 * released later the main loop. Allocates a client if the matching one
2164 * isn't around. The client is returned with its reference count incremented
2165 * by one. The caller must call h_ReleaseClient_r when finished with
2168 * The refCount on client->host is returned incremented. h_ReleaseClient_r
2169 * does not decrement the refCount on client->host.
2172 h_FindClient_r(struct rx_connection *tcon)
2174 register struct client *client;
2175 struct host *host = NULL;
2176 struct client *oldClient;
2177 afs_int32 viceid = 0;
2181 #if (64-MAXKTCNAMELEN)
2182 ticket name length != 64
2186 char uname[PR_MAXNAMELEN];
2187 char tcell[MAXKTCREALMLEN];
2191 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2192 if (client && client->sid == rxr_CidOf(tcon)
2193 && client->VenusEpoch == rxr_GetEpoch(tcon)) {
2195 h_Hold_r(client->host);
2196 if (!client->deleted && client->prfail != 2) {
2197 /* Could add shared lock on client here */
2198 /* note that we don't have to lock entry in this path to
2199 * ensure CPS is initialized, since we don't call rx_SetSpecific
2200 * until initialization is done, and we only get here if
2201 * rx_GetSpecific located the client structure.
2206 ObtainWriteLock(&client->lock); /* released at end */
2212 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
2214 ("FindClient: authenticating connection: authClass=%d\n",
2216 if (authClass == 1) {
2217 /* A bcrypt tickets, no longer supported */
2218 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
2219 viceid = AnonymousID;
2220 expTime = 0x7fffffff;
2221 } else if (authClass == 2) {
2224 /* kerberos ticket */
2225 code = rxkad_GetServerInfo(tcon, /*level */ 0, (afs_uint32 *)&expTime,
2226 tname, tinst, tcell, &kvno);
2228 ViceLog(1, ("Failed to get rxkad ticket info\n"));
2229 viceid = AnonymousID;
2230 expTime = 0x7fffffff;
2232 int ilen = strlen(tinst);
2234 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
2235 tname, tinst, tcell, expTime, kvno));
2236 strncpy(uname, tname, sizeof(uname));
2238 if (strlen(uname) + 1 + ilen >= sizeof(uname))
2241 strcat(uname, tinst);
2243 /* translate the name to a vice id */
2244 code = MapName_r(uname, tcell, &viceid);
2248 ("failed to map name=%s, cell=%s -> code=%d\n", uname,
2251 viceid = AnonymousID;
2252 expTime = 0x7fffffff;
2256 viceid = AnonymousID; /* unknown security class */
2257 expTime = 0x7fffffff;
2260 if (!client) { /* loop */
2261 host = h_GetHost_r(tcon); /* Returns with incremented refCount */
2267 /* First try to find the client structure */
2268 for (client = host->FirstClient; client; client = client->next) {
2269 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2270 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2273 ObtainWriteLock(&client->lock);
2279 /* Still no client structure - get one */
2282 if (host->hostFlags & HOSTDELETED) {
2287 /* Retry to find the client structure */
2288 for (client = host->FirstClient; client; client = client->next) {
2289 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2290 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2292 goto retryfirstclient;
2297 ObtainWriteLock(&client->lock);
2298 client->refCount = 1;
2299 client->host = host;
2300 #if FS_STATS_DETAILED
2301 client->InSameNetwork = host->InSameNetwork;
2302 #endif /* FS_STATS_DETAILED */
2303 client->ViceId = viceid;
2304 client->expTime = expTime; /* rx only */
2305 client->authClass = authClass; /* rx only */
2306 client->sid = rxr_CidOf(tcon);
2307 client->VenusEpoch = rxr_GetEpoch(tcon);
2308 client->CPS.prlist_val = NULL;
2309 client->CPS.prlist_len = 0;
2313 client->prfail = fail;
2315 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
2316 client->CPS.prlist_len = 0;
2317 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID))
2318 free(client->CPS.prlist_val);
2319 client->CPS.prlist_val = NULL;
2320 client->ViceId = viceid;
2321 client->expTime = expTime;
2323 if (viceid == ANONYMOUSID) {
2324 client->CPS.prlist_len = AnonCPS.prlist_len;
2325 client->CPS.prlist_val = AnonCPS.prlist_val;
2328 code = hpr_GetCPS(viceid, &client->CPS);
2333 ("pr_GetCPS failed(%d) for user %d, host %" AFS_PTR_FMT " (%s:%d)\n",
2334 code, viceid, client->host,
2335 afs_inet_ntoa_r(client->host->host,hoststr),
2336 ntohs(client->host->port)));
2338 /* Although ubik_Call (called by pr_GetCPS) traverses thru
2339 * all protection servers and reevaluates things if no
2340 * sync server or quorum is found we could still end up
2341 * with one of these errors. In such case we would like to
2342 * reevaluate the rpc call to find if there's cps for this
2343 * guy. We treat other errors (except network failures
2344 * ones - i.e. code < 0) as an indication that there is no
2345 * CPS for this host. Ideally we could like to deal this
2346 * problem the other way around (i.e. if code == NOCPS
2347 * ignore else retry next time) but the problem is that
2348 * there're other errors (i.e. EPERM) for which we don't
2349 * want to retry and we don't know the whole code list!
2351 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
2355 /* the disabling of system:administrators is so iffy and has so many
2356 * possible failure modes that we will disable it again */
2357 /* Turn off System:Administrator for safety
2358 * if (AL_IsAMember(SystemId, client->CPS) == 0)
2359 * assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
2362 /* Now, tcon may already be set to a rock, since we blocked with no host
2363 * or client locks set above in pr_GetCPS (XXXX some locking is probably
2364 * required). So, before setting the RPC's rock, we should disconnect
2365 * the RPC from the other client structure's rock.
2367 oldClient = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2368 if (oldClient && oldClient != client && oldClient->sid == rxr_CidOf(tcon)
2369 && oldClient->VenusEpoch == rxr_GetEpoch(tcon)) {
2371 if (!oldClient->deleted) {
2372 /* if we didn't create it, it's not ours to put back */
2374 ViceLog(0, ("FindClient: stillborn client %x(%x); conn %x (host %s:%d) had client %x(%x)\n",
2375 client, client->sid, tcon,
2376 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2377 ntohs(rxr_PortOf(tcon)),
2378 oldClient, oldClient->sid));
2379 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2380 free(client->CPS.prlist_val);
2381 client->CPS.prlist_val = NULL;
2382 client->CPS.prlist_len = 0;
2384 /* We should perhaps check for 0 here */
2386 ReleaseWriteLock(&client->lock);
2391 oldClient->refCount++;
2393 ObtainWriteLock(&oldClient->lock);
2397 ViceLog(0, ("FindClient: deleted client %x(%x) already had conn %x (host %s:%d), stolen by client %x(%x)\n",
2398 oldClient, oldClient->sid, tcon,
2399 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2400 ntohs(rxr_PortOf(tcon)),
2401 client, client->sid));
2402 /* rx_SetSpecific will be done immediately below */
2405 /* Avoid chaining in more than once. */
2409 if (host->hostFlags & HOSTDELETED) {
2414 client->host = NULL;
2416 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2417 free(client->CPS.prlist_val);
2418 client->CPS.prlist_val = NULL;
2419 client->CPS.prlist_len = 0;
2422 ReleaseWriteLock(&client->lock);
2427 client->next = host->FirstClient;
2428 host->FirstClient = client;
2430 CurrentConnections++; /* increment number of connections */
2432 rx_SetSpecific(tcon, rxcon_client_key, client);
2433 ReleaseWriteLock(&client->lock);
2437 } /*h_FindClient_r */
2440 h_ReleaseClient_r(struct client *client)
2442 assert(client->refCount > 0);
2449 * Sigh: this one is used to get the client AGAIN within the individual
2450 * server routines. This does not bother h_Holding the host, since
2451 * this is assumed already have been done by the server main loop.
2452 * It does check tokens, since only the server routines can return the
2453 * VICETOKENDEAD error code
2456 GetClient(struct rx_connection *tcon, struct client **cp)
2458 register struct client *client;
2463 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2464 if (client == NULL) {
2466 ("GetClient: no client in conn %x (host %s:%d), VBUSYING\n",
2467 tcon, afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2468 ntohs(rxr_PortOf(tcon))));
2472 if (rxr_CidOf(tcon) != client->sid || rxr_GetEpoch(tcon) != client->VenusEpoch) {
2474 ("GetClient: tcon %x tcon sid %d client sid %d\n",
2475 tcon, rxr_CidOf(tcon), client->sid));
2479 if (client && client->LastCall > client->expTime && client->expTime) {
2481 ("Token for %s at %s:%d expired %d\n", h_UserName(client),
2482 afs_inet_ntoa_r(client->host->host, hoststr),
2483 ntohs(client->host->port), client->expTime));
2485 return VICETOKENDEAD;
2495 PutClient(struct client **cp)
2501 h_ReleaseClient_r(*cp);
2508 /* Client user name for short term use. Note that this is NOT inexpensive */
2510 h_UserName(struct client *client)
2512 static char User[PR_MAXNAMELEN + 1];
2516 lids.idlist_len = 1;
2517 lids.idlist_val = (afs_int32 *) malloc(1 * sizeof(afs_int32));
2518 if (!lids.idlist_val) {
2519 ViceLog(0, ("Failed malloc in h_UserName\n"));
2522 lnames.namelist_len = 0;
2523 lnames.namelist_val = (prname *) 0;
2524 lids.idlist_val[0] = client->ViceId;
2525 if (hpr_IdToName(&lids, &lnames)) {
2526 /* We need to free id we alloced above! */
2527 free(lids.idlist_val);
2528 return "*UNKNOWN USER NAME*";
2530 strncpy(User, lnames.namelist_val[0], PR_MAXNAMELEN);
2531 free(lids.idlist_val);
2532 free(lnames.namelist_val);
2541 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
2542 CEs, CEBlocks, HTs, HTBlocks));
2548 h_PrintClient(register struct host *host, int flags, void *rock)
2550 StreamHandle_t *file = (StreamHandle_t *)rock;
2551 register struct client *client;
2556 time_t LastCall, expTime;
2559 LastCall = host->LastCall;
2560 if (host->hostFlags & HOSTDELETED) {
2564 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2565 "Host %s:%d down = %d, LastCall %s",
2566 afs_inet_ntoa_r(host->host, hoststr),
2567 ntohs(host->port), (host->hostFlags & VENUSDOWN),
2568 afs_ctime(&LastCall, tbuffer,
2570 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2571 for (client = host->FirstClient; client; client = client->next) {
2572 if (!client->deleted) {
2573 expTime = client->expTime;
2574 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2575 " user id=%d, name=%s, sl=%s till %s",
2576 client->ViceId, h_UserName(client),
2578 authClass ? "Authenticated" :
2579 "Not authenticated",
2581 authClass ? afs_ctime(&expTime, tbuffer,
2584 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2585 (void)afs_snprintf(tmpStr, sizeof tmpStr, " CPS-%d is [",
2586 client->CPS.prlist_len);
2587 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2588 if (client->CPS.prlist_val) {
2589 for (i = 0; i > client->CPS.prlist_len; i++) {
2590 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
2591 client->CPS.prlist_val[i]);
2592 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2595 sprintf(tmpStr, "]\n");
2596 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2602 } /*h_PrintClient */
2607 * Print a list of clients, with last security level and token value seen,
2611 h_PrintClients(void)
2617 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
2621 ("Couldn't create client dump file %s\n",
2622 AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2625 now = FT_ApproxTime();
2626 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active users at %s\n",
2627 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
2628 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2629 h_Enumerate(h_PrintClient, (char *)file);
2630 STREAM_REALLYCLOSE(file);
2631 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2638 h_DumpHost(register struct host *host, int flags, void *rock)
2640 StreamHandle_t *file = (StreamHandle_t *)rock;
2647 (void)afs_snprintf(tmpStr, sizeof tmpStr,
2648 "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 [",
2649 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port), host->index,
2650 host->cblist, CheckLock(&host->lock), host->LastCall,
2651 host->ActiveCall, (host->hostFlags & VENUSDOWN),
2652 host->hostFlags & HOSTDELETED, host->Console,
2653 host->hostFlags & CLIENTDELETED, host->hcpsfailed,
2655 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2656 if (host->hcps.prlist_val)
2657 for (i = 0; i < host->hcps.prlist_len; i++) {
2658 (void)afs_snprintf(tmpStr, sizeof tmpStr, " %d",
2659 host->hcps.prlist_val[i]);
2660 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2662 sprintf(tmpStr, "] [");
2663 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2664 if (host->interface)
2665 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
2667 sprintf(tmpStr, " %s:%d",
2668 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
2669 ntohs(host->interface->interface[i].port));
2670 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2672 sprintf(tmpStr, "] refCount:%d hostFlags:%hu\n", host->refCount, host->hostFlags);
2673 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2685 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
2691 ("Couldn't create host dump file %s\n",
2692 AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2695 now = FT_ApproxTime();
2696 (void)afs_snprintf(tmpStr, sizeof tmpStr, "List of active hosts at %s\n",
2697 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
2698 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2699 h_Enumerate(h_DumpHost, (char *)file);
2700 STREAM_REALLYCLOSE(file);
2701 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2705 #ifdef AFS_DEMAND_ATTACH_FS
2708 * host state serialization
2710 static int h_stateFillHeader(struct host_state_header * hdr);
2711 static int h_stateCheckHeader(struct host_state_header * hdr);
2712 static int h_stateAllocMap(struct fs_dump_state * state);
2713 static int h_stateSaveHost(struct host * host, int flags, void *rock);
2714 static int h_stateRestoreHost(struct fs_dump_state * state);
2715 static int h_stateRestoreIndex(struct host * h, int flags, void *rock);
2716 static int h_stateVerifyHost(struct host * h, int flags, void *rock);
2717 static int h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h, afs_uint32 addr, afs_uint16 port);
2718 static int h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h);
2719 static void h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out);
2720 static void h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out);
2723 /* this procedure saves all host state to disk for fast startup */
2725 h_stateSave(struct fs_dump_state * state)
2727 AssignInt64(state->eof_offset, &state->hdr->h_offset);
2730 ViceLog(0, ("h_stateSave: hostCount=%d\n", hostCount));
2732 /* invalidate host state header */
2733 memset(state->h_hdr, 0, sizeof(struct host_state_header));
2735 if (fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2736 sizeof(struct host_state_header))) {
2741 fs_stateIncEOF(state, sizeof(struct host_state_header));
2743 h_Enumerate_r(h_stateSaveHost, hostList, (char *)state);
2748 h_stateFillHeader(state->h_hdr);
2750 /* write the real header to disk */
2751 state->bail = fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2752 sizeof(struct host_state_header));
2759 * host state serialization
2761 * this procedure restores all host state from a disk for fast startup
2764 h_stateRestore(struct fs_dump_state * state)
2768 /* seek to the right position and read in the host state header */
2769 if (fs_stateReadHeader(state, &state->hdr->h_offset, state->h_hdr,
2770 sizeof(struct host_state_header))) {
2775 /* check the validity of the header */
2776 if (h_stateCheckHeader(state->h_hdr)) {
2781 records = state->h_hdr->records;
2783 if (h_stateAllocMap(state)) {
2788 /* iterate over records restoring host state */
2789 for (i=0; i < records; i++) {
2790 if (h_stateRestoreHost(state) != 0) {
2801 h_stateRestoreIndices(struct fs_dump_state * state)
2803 h_Enumerate_r(h_stateRestoreIndex, hostList, (char *)state);
2808 h_stateRestoreIndex(struct host * h, int flags, void *rock)
2810 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2811 if (cb_OldToNew(state, h->cblist, &h->cblist)) {
2812 return H_ENUMERATE_BAIL(flags);
2818 h_stateVerify(struct fs_dump_state * state)
2820 h_Enumerate_r(h_stateVerifyHost, hostList, (char *)state);
2825 h_stateVerifyHost(struct host * h, int flags, void* rock)
2827 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2831 ViceLog(0, ("h_stateVerifyHost: error: NULL host pointer in linked list\n"));
2832 return H_ENUMERATE_BAIL(flags);
2836 for (i = h->interface->numberOfInterfaces-1; i >= 0; i--) {
2837 if (h_stateVerifyAddrHash(state, h, h->interface->interface[i].addr,
2838 h->interface->interface[i].port)) {
2842 if (h_stateVerifyUuidHash(state, h)) {
2845 } else if (h_stateVerifyAddrHash(state, h, h->host, h->port)) {
2849 if (cb_stateVerifyHCBList(state, h)) {
2857 h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h, afs_uint32 addr, afs_uint16 port)
2859 int ret = 0, found = 0;
2860 struct host *host = NULL;
2861 struct h_AddrHashChain *chain;
2862 int index = h_HashIndex(addr);
2866 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
2867 host = chain->hostPtr;
2869 afs_inet_ntoa_r(addr, tmp);
2870 ViceLog(0, ("h_stateVerifyAddrHash: error: addr hash chain has NULL host ptr (lookup addr %s)\n", tmp));
2874 if ((chain->addr == addr) && (chain->port == port)) {
2876 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr hash entry points to different host struct (%d, %d)\n",
2877 h->index, host->index));
2878 state->flags.warnings_generated = 1;
2883 if (chain_len > FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN) {
2884 ViceLog(0, ("h_stateVerifyAddrHash: error: hash chain length exceeds %d; assuming there's a loop\n",
2885 FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN));
2893 afs_inet_ntoa_r(addr, tmp);
2894 if (state->mode == FS_STATE_LOAD_MODE) {
2895 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s not found in hash\n", tmp));
2899 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr %s not found in hash\n", tmp));
2900 state->flags.warnings_generated = 1;
2909 h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h)
2911 int ret = 0, found = 0;
2912 struct host *host = NULL;
2913 struct h_UuidHashChain *chain;
2914 afsUUID * uuidp = &h->interface->uuid;
2915 int index = h_UuidHashIndex(uuidp);
2919 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
2920 host = chain->hostPtr;
2922 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
2923 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid hash chain has NULL host ptr (lookup uuid %s)\n", tmp));
2927 if (host->interface &&
2928 afs_uuid_equal(&host->interface->uuid, uuidp)) {
2930 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid hash entry points to different host struct (%d, %d)\n",
2931 h->index, host->index));
2932 state->flags.warnings_generated = 1;
2937 if (chain_len > FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN) {
2938 ViceLog(0, ("h_stateVerifyUuidHash: error: hash chain length exceeds %d; assuming there's a loop\n",
2939 FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN));
2947 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
2948 if (state->mode == FS_STATE_LOAD_MODE) {
2949 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid %s not found in hash\n", tmp));
2953 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid %s not found in hash\n", tmp));
2954 state->flags.warnings_generated = 1;
2962 /* create the host state header structure */
2964 h_stateFillHeader(struct host_state_header * hdr)
2966 hdr->stamp.magic = HOST_STATE_MAGIC;
2967 hdr->stamp.version = HOST_STATE_VERSION;
2971 /* check the contents of the host state header structure */
2973 h_stateCheckHeader(struct host_state_header * hdr)
2977 if (hdr->stamp.magic != HOST_STATE_MAGIC) {
2978 ViceLog(0, ("check_host_state_header: invalid state header\n"));
2981 else if (hdr->stamp.version != HOST_STATE_VERSION) {
2982 ViceLog(0, ("check_host_state_header: unknown version number\n"));
2988 /* allocate the host id mapping table */
2990 h_stateAllocMap(struct fs_dump_state * state)
2992 state->h_map.len = state->h_hdr->index_max + 1;
2993 state->h_map.entries = (struct idx_map_entry_t *)
2994 calloc(state->h_map.len, sizeof(struct idx_map_entry_t));
2995 return (state->h_map.entries != NULL) ? 0 : 1;
2998 /* function called by h_Enumerate to save a host to disk */
3000 h_stateSaveHost(struct host * host, int flags, void* rock)
3002 struct fs_dump_state *state = (struct fs_dump_state *) rock;
3003 int if_len=0, hcps_len=0;
3004 struct hostDiskEntry hdsk;
3005 struct host_state_entry_header hdr;
3006 struct Interface * ifp = NULL;
3007 afs_int32 * hcps = NULL;
3008 struct iovec iov[4];
3011 memset(&hdr, 0, sizeof(hdr));
3013 if (state->h_hdr->index_max < host->index) {
3014 state->h_hdr->index_max = host->index;
3017 h_hostToDiskEntry_r(host, &hdsk);
3018 if (host->interface) {
3019 if_len = sizeof(struct Interface) +
3020 ((host->interface->numberOfInterfaces-1) * sizeof(struct AddrPort));
3021 ifp = (struct Interface *) malloc(if_len);
3022 assert(ifp != NULL);
3023 memcpy(ifp, host->interface, if_len);
3024 hdr.interfaces = host->interface->numberOfInterfaces;
3025 iov[iovcnt].iov_base = (char *) ifp;
3026 iov[iovcnt].iov_len = if_len;
3029 if (host->hcps.prlist_val) {
3030 hdr.hcps = host->hcps.prlist_len;
3031 hcps_len = hdr.hcps * sizeof(afs_int32);
3032 hcps = (afs_int32 *) malloc(hcps_len);
3033 assert(hcps != NULL);
3034 memcpy(hcps, host->hcps.prlist_val, hcps_len);
3035 iov[iovcnt].iov_base = (char *) hcps;
3036 iov[iovcnt].iov_len = hcps_len;
3040 if (hdsk.index > state->h_hdr->index_max)
3041 state->h_hdr->index_max = hdsk.index;
3043 hdr.len = sizeof(struct host_state_entry_header) +
3044 sizeof(struct hostDiskEntry) + if_len + hcps_len;
3045 hdr.magic = HOST_STATE_ENTRY_MAGIC;
3047 iov[0].iov_base = (char *) &hdr;
3048 iov[0].iov_len = sizeof(hdr);
3049 iov[1].iov_base = (char *) &hdsk;
3050 iov[1].iov_len = sizeof(struct hostDiskEntry);
3052 if (fs_stateWriteV(state, iov, iovcnt)) {
3053 ViceLog(0, ("h_stateSaveHost: failed to save host %d", host->index));
3057 fs_stateIncEOF(state, hdr.len);
3059 state->h_hdr->records++;
3066 return H_ENUMERATE_BAIL(flags);
3071 /* restores a host from disk */
3073 h_stateRestoreHost(struct fs_dump_state * state)
3075 int ifp_len=0, hcps_len=0, bail=0;
3076 struct host_state_entry_header hdr;
3077 struct hostDiskEntry hdsk;
3078 struct host *host = NULL;
3079 struct Interface *ifp = NULL;
3080 afs_int32 * hcps = NULL;
3081 struct iovec iov[3];
3084 if (fs_stateRead(state, &hdr, sizeof(hdr))) {
3085 ViceLog(0, ("h_stateRestoreHost: failed to read host entry header from dump file '%s'\n",
3091 if (hdr.magic != HOST_STATE_ENTRY_MAGIC) {
3092 ViceLog(0, ("h_stateRestoreHost: fileserver state dump file '%s' is corrupt.\n",
3098 iov[0].iov_base = (char *) &hdsk;
3099 iov[0].iov_len = sizeof(struct hostDiskEntry);
3101 if (hdr.interfaces) {
3102 ifp_len = sizeof(struct Interface) +
3103 ((hdr.interfaces-1) * sizeof(struct AddrPort));
3104 ifp = (struct Interface *) malloc(ifp_len);
3105 assert(ifp != NULL);
3106 iov[iovcnt].iov_base = (char *) ifp;
3107 iov[iovcnt].iov_len = ifp_len;
3111 hcps_len = hdr.hcps * sizeof(afs_int32);
3112 hcps = (afs_int32 *) malloc(hcps_len);
3113 assert(hcps != NULL);
3114 iov[iovcnt].iov_base = (char *) hcps;
3115 iov[iovcnt].iov_len = hcps_len;
3119 if ((ifp_len + hcps_len + sizeof(hdsk) + sizeof(hdr)) != hdr.len) {
3120 ViceLog(0, ("h_stateRestoreHost: host entry header length fields are inconsistent\n"));
3125 if (fs_stateReadV(state, iov, iovcnt)) {
3126 ViceLog(0, ("h_stateRestoreHost: failed to read host entry\n"));
3131 if (!hdr.hcps && hdsk.hcps_valid) {
3132 /* valid, zero-length host cps ; does this ever happen? */
3133 hcps = (afs_int32 *) malloc(sizeof(afs_int32));
3134 assert(hcps != NULL);
3138 assert(host != NULL);
3141 host->interface = ifp;
3144 host->hcps.prlist_val = hcps;
3145 host->hcps.prlist_len = hdr.hcps;
3148 h_diskEntryToHost_r(&hdsk, host);
3149 h_SetupCallbackConn_r(host);
3151 h_AddHostToAddrHashTable_r(host->host, host->port, host);
3154 for (i = ifp->numberOfInterfaces-1; i >= 0; i--) {
3155 if (ifp->interface[i].valid &&
3156 !(ifp->interface[i].addr == host->host &&
3157 ifp->interface[i].port == host->port)) {
3158 h_AddHostToAddrHashTable_r(ifp->interface[i].addr,
3159 ifp->interface[i].port,
3163 h_AddHostToUuidHashTable_r(&ifp->uuid, host);
3165 h_InsertList_r(host);
3167 /* setup host id map entry */
3168 state->h_map.entries[hdsk.index].old_idx = hdsk.index;
3169 state->h_map.entries[hdsk.index].new_idx = host->index;
3181 /* serialize a host structure to disk */
3183 h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out)
3185 out->host = in->host;
3186 out->port = in->port;
3187 out->hostFlags = in->hostFlags;
3188 out->Console = in->Console;
3189 out->hcpsfailed = in->hcpsfailed;
3190 out->LastCall = in->LastCall;
3191 out->ActiveCall = in->ActiveCall;
3192 out->cpsCall = in->cpsCall;
3193 out->cblist = in->cblist;
3194 #ifdef FS_STATS_DETAILED
3195 out->InSameNetwork = in->InSameNetwork;
3198 /* special fields we save, but are not memcpy'd back on restore */
3199 out->index = in->index;
3200 out->hcps_len = in->hcps.prlist_len;
3201 out->hcps_valid = (in->hcps.prlist_val == NULL) ? 0 : 1;
3204 /* restore a host structure from disk */
3206 h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out)
3208 out->host = in->host;
3209 out->port = in->port;
3210 out->hostFlags = in->hostFlags;
3211 out->Console = in->Console;
3212 out->hcpsfailed = in->hcpsfailed;
3213 out->LastCall = in->LastCall;
3214 out->ActiveCall = in->ActiveCall;
3215 out->cpsCall = in->cpsCall;
3216 out->cblist = in->cblist;
3217 #ifdef FS_STATS_DETAILED
3218 out->InSameNetwork = in->InSameNetwork;
3222 /* index translation routines */
3224 h_OldToNew(struct fs_dump_state * state, afs_uint32 old, afs_uint32 * new)
3228 /* hosts use a zero-based index, so old==0 is valid */
3230 if (old >= state->h_map.len) {
3231 ViceLog(0, ("h_OldToNew: index %d is out of range\n", old));
3233 } else if (state->h_map.entries[old].old_idx != old) { /* sanity check */
3234 ViceLog(0, ("h_OldToNew: index %d points to an invalid host record\n", old));
3237 *new = state->h_map.entries[old].new_idx;
3242 #endif /* AFS_DEMAND_ATTACH_FS */
3246 * This counts the number of workstations, the number of active workstations,
3247 * and the number of workstations declared "down" (i.e. not heard from
3248 * recently). An active workstation has received a call since the cutoff
3249 * time argument passed.
3252 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
3254 register struct host *host;
3255 register int num = 0, active = 0, del = 0;
3259 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
3260 if (!(host->hostFlags & HOSTDELETED)) {
3262 if (host->ActiveCall > cutofftime)
3264 if (host->hostFlags & VENUSDOWN)
3268 if (count != hostCount) {
3269 ViceLog(0, ("h_GetWorkStats found %d of %d hosts\n", count, hostCount));
3270 } else if (host != NULL) {
3271 ViceLog(0, ("h_GetWorkStats found more than %d hosts\n", hostCount));
3272 ShutDownAndCore(PANIC);
3282 } /*h_GetWorkStats */
3285 /*------------------------------------------------------------------------
3286 * PRIVATE h_ClassifyAddress
3289 * Given a target IP address and a candidate IP address (both
3290 * in host byte order), classify the candidate into one of three
3291 * buckets in relation to the target by bumping the counters passed
3295 * a_targetAddr : Target address.
3296 * a_candAddr : Candidate address.
3297 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
3298 * addresses are either in the same network
3299 * or the same subnet.
3300 * a_diffSubnetP : ...when the candidate is in a different
3302 * a_diffNetworkP : ...when the candidate is in a different
3309 * The target and candidate addresses are both in host byte
3310 * order, NOT network byte order, when passed in.
3314 *------------------------------------------------------------------------*/
3317 h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
3318 afs_int32 * a_sameNetOrSubnetP, afs_int32 * a_diffSubnetP,
3319 afs_int32 * a_diffNetworkP)
3320 { /*h_ClassifyAddress */
3322 afs_uint32 targetNet;
3323 afs_uint32 targetSubnet;
3325 afs_uint32 candSubnet;
3328 * Put bad values into the subnet info to start with.
3330 targetSubnet = (afs_uint32) 0;
3331 candSubnet = (afs_uint32) 0;
3334 * Pull out the network and subnetwork numbers from the target
3335 * and candidate addresses. We can short-circuit this whole
3336 * affair if the target and candidate addresses are not of the
3339 if (IN_CLASSA(a_targetAddr)) {
3340 if (!(IN_CLASSA(a_candAddr))) {
3341 (*a_diffNetworkP)++;
3344 targetNet = a_targetAddr & IN_CLASSA_NET;
3345 candNet = a_candAddr & IN_CLASSA_NET;
3346 if (IN_SUBNETA(a_targetAddr))
3347 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
3348 if (IN_SUBNETA(a_candAddr))
3349 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
3350 } else if (IN_CLASSB(a_targetAddr)) {
3351 if (!(IN_CLASSB(a_candAddr))) {
3352 (*a_diffNetworkP)++;
3355 targetNet = a_targetAddr & IN_CLASSB_NET;
3356 candNet = a_candAddr & IN_CLASSB_NET;
3357 if (IN_SUBNETB(a_targetAddr))
3358 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
3359 if (IN_SUBNETB(a_candAddr))
3360 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
3361 } /*Class B target */
3362 else if (IN_CLASSC(a_targetAddr)) {
3363 if (!(IN_CLASSC(a_candAddr))) {
3364 (*a_diffNetworkP)++;
3367 targetNet = a_targetAddr & IN_CLASSC_NET;
3368 candNet = a_candAddr & IN_CLASSC_NET;
3371 * Note that class C addresses can't have subnets,
3372 * so we leave the defaults untouched.
3374 } /*Class C target */
3376 targetNet = a_targetAddr;
3377 candNet = a_candAddr;
3378 } /*Class D address */
3381 * Now, simply compare the extracted net and subnet values for
3382 * the two addresses (which at this point are known to be of the
3385 if (targetNet == candNet) {
3386 if (targetSubnet == candSubnet)
3387 (*a_sameNetOrSubnetP)++;
3391 (*a_diffNetworkP)++;
3393 } /*h_ClassifyAddress */
3396 /*------------------------------------------------------------------------
3397 * EXPORTED h_GetHostNetStats
3400 * Iterate through the host table, and classify each (non-deleted)
3401 * host entry into ``proximity'' categories (same net or subnet,
3402 * different subnet, different network).
3405 * a_numHostsP : Set to total number of (non-deleted) hosts.
3406 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
3407 * a_diffSubnetP : Set to # hosts on diff subnet as server.
3408 * a_diffNetworkP : Set to # hosts on diff network as server.
3414 * We only count non-deleted hosts. The storage pointed to by our
3415 * parameters is zeroed upon entry.
3419 *------------------------------------------------------------------------*/
3422 h_GetHostNetStats(afs_int32 * a_numHostsP, afs_int32 * a_sameNetOrSubnetP,
3423 afs_int32 * a_diffSubnetP, afs_int32 * a_diffNetworkP)
3424 { /*h_GetHostNetStats */
3426 register struct host *hostP; /*Ptr to current host entry */
3427 register afs_uint32 currAddr_HBO; /*Curr host addr, host byte order */
3431 * Clear out the storage pointed to by our parameters.
3433 *a_numHostsP = (afs_int32) 0;
3434 *a_sameNetOrSubnetP = (afs_int32) 0;
3435 *a_diffSubnetP = (afs_int32) 0;
3436 *a_diffNetworkP = (afs_int32) 0;
3439 for (count = 0, hostP = hostList; hostP && count < hostCount; hostP = hostP->next, count++) {
3440 if (!(hostP->hostFlags & HOSTDELETED)) {
3442 * Bump the number of undeleted host entries found.
3443 * In classifying the current entry's address, make
3444 * sure to first convert to host byte order.
3447 currAddr_HBO = (afs_uint32) ntohl(hostP->host);
3448 h_ClassifyAddress(FS_HostAddr_HBO, currAddr_HBO,
3449 a_sameNetOrSubnetP, a_diffSubnetP,
3451 } /*Only look at non-deleted hosts */
3452 } /*For each host record hashed to this index */
3453 if (count != hostCount) {
3454 ViceLog(0, ("h_GetHostNetStats found %d of %d hosts\n", count, hostCount));
3455 } else if (hostP != NULL) {
3456 ViceLog(0, ("h_GetHostNetStats found more than %d hosts\n", hostCount));
3457 ShutDownAndCore(PANIC);
3460 } /*h_GetHostNetStats */
3462 static afs_uint32 checktime;
3463 static afs_uint32 clientdeletetime;
3464 static struct AFSFid zerofid;
3468 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
3469 * Since it can serialize them, and pile up, it should be a separate LWP
3470 * from other events.
3474 CheckHost(register struct host *host, int flags, void *rock)
3476 register struct client *client;
3477 struct rx_connection *cb_conn = NULL;
3480 #ifdef AFS_DEMAND_ATTACH_FS
3481 /* kill the checkhost lwp ASAP during shutdown */
3483 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3485 return H_ENUMERATE_BAIL(flags);
3490 /* Host is held by h_Enumerate */
3492 for (client = host->FirstClient; client; client = client->next) {
3493 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3494 client->deleted = 1;
3495 host->hostFlags |= CLIENTDELETED;
3498 if (host->LastCall < checktime) {
3500 if (!(host->hostFlags & HOSTDELETED)) {
3501 host->hostFlags |= HWHO_INPROGRESS;
3502 cb_conn = host->callback_rxcon;
3503 rx_GetConnection(cb_conn);
3504 if (host->LastCall < clientdeletetime) {
3505 host->hostFlags |= HOSTDELETED;
3506 if (!(host->hostFlags & VENUSDOWN)) {
3507 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3508 if (host->interface) {
3511 RXAFSCB_InitCallBackState3(cb_conn,
3517 RXAFSCB_InitCallBackState(cb_conn);
3520 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3523 (void)afs_inet_ntoa_r(host->host, hoststr);
3525 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3526 hoststr, ntohs(host->port)));
3527 host->hostFlags |= VENUSDOWN;
3529 /* Note: it's safe to delete hosts even if they have call
3530 * back state, because break delayed callbacks (called when a
3531 * message is received from the workstation) will always send a
3532 * break all call backs to the workstation if there is no
3537 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3539 (void)afs_inet_ntoa_r(host->host, hoststr);
3540 if (host->interface) {
3541 afsUUID uuid = host->interface->uuid;
3543 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3546 if (MultiProbeAlternateAddress_r(host)) {
3547 ViceLog(0,("CheckHost: Probing all interfaces of host %s:%d failed, code %d\n",
3548 hoststr, ntohs(host->port), code));
3549 host->hostFlags |= VENUSDOWN;
3554 code = RXAFSCB_Probe(cb_conn);
3558 ("CheckHost: Probe failed for host %s:%d, code %d\n",
3559 hoststr, ntohs(host->port), code));
3560 host->hostFlags |= VENUSDOWN;
3566 rx_PutConnection(cb_conn);
3569 host->hostFlags &= ~HWHO_INPROGRESS;
3580 CheckHost_r(register struct host *host, int flags, void *dummy)
3582 register struct client *client;
3583 struct rx_connection *cb_conn = NULL;
3586 #ifdef AFS_DEMAND_ATTACH_FS
3587 /* kill the checkhost lwp ASAP during shutdown */
3589 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3591 return H_ENUMERATE_BAIL(flags);
3596 /* Host is held by h_Enumerate_r */
3597 for (client = host->FirstClient; client; client = client->next) {
3598 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3599 client->deleted = 1;
3600 host->hostFlags |= CLIENTDELETED;
3603 if (host->LastCall < checktime) {
3605 if (!(host->hostFlags & HOSTDELETED)) {
3606 cb_conn = host->callback_rxcon;
3607 rx_GetConnection(cb_conn);
3608 if (host->LastCall < clientdeletetime) {
3609 host->hostFlags |= HOSTDELETED;
3610 if (!(host->hostFlags & VENUSDOWN)) {
3611 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3612 if (host->interface) {
3615 RXAFSCB_InitCallBackState3(cb_conn,
3621 RXAFSCB_InitCallBackState(cb_conn);
3624 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3627 (void)afs_inet_ntoa_r(host->host, hoststr);
3629 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3630 hoststr, ntohs(host->port)));
3631 host->hostFlags |= VENUSDOWN;
3633 /* Note: it's safe to delete hosts even if they have call
3634 * back state, because break delayed callbacks (called when a
3635 * message is received from the workstation) will always send a
3636 * break all call backs to the workstation if there is no
3641 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3643 (void)afs_inet_ntoa_r(host->host, hoststr);
3644 if (host->interface) {
3645 afsUUID uuid = host->interface->uuid;
3647 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3650 if (MultiProbeAlternateAddress_r(host)) {
3651 ViceLog(0,("CheckHost_r: Probing all interfaces of host %s:%d failed, code %d\n",
3652 hoststr, ntohs(host->port), code));
3653 host->hostFlags |= VENUSDOWN;
3658 code = RXAFSCB_Probe(cb_conn);
3662 ("CheckHost_r: Probe failed for host %s:%d, code %d\n",
3663 hoststr, ntohs(host->port), code));
3664 host->hostFlags |= VENUSDOWN;
3670 rx_PutConnection(cb_conn);
3682 * Set VenusDown for any hosts that have not had a call in 15 minutes and
3683 * don't respond to a probe. Note that VenusDown can only be cleared if
3684 * a message is received from the host (see ServerLWP in file.c).
3685 * Delete hosts that have not had any calls in 1 hour, clients that
3686 * have not had any calls in 15 minutes.
3688 * This routine is called roughly every 5 minutes.
3693 afs_uint32 now = FT_ApproxTime();
3695 memset(&zerofid, 0, sizeof(zerofid));
3697 * Send a probe to the workstation if it hasn't been heard from in
3700 checktime = now - 15 * 60;
3701 clientdeletetime = now - 120 * 60; /* 2 hours ago */
3704 h_Enumerate_r(CheckHost_r, hostList, NULL);
3709 * This is called with host locked and held. At this point, the
3710 * hostAddrHashTable has an entry for the primary addr/port inserted
3711 * by h_Alloc_r(). No other interfaces should be considered valid.
3713 * The addresses in the interfaceAddr list are in host byte order.
3716 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
3723 struct Interface *interface;
3726 afs_uint16 port7001 = htons(7001);
3731 number = interf->numberOfInterfaces;
3732 myAddr = host->host; /* current interface address */
3733 myPort = host->port; /* current port */
3736 ("initInterfaceAddr : host %s:%d numAddr %d\n",
3737 afs_inet_ntoa_r(myAddr, hoststr), ntohs(myPort), number));
3739 /* validation checks */
3740 if (number < 0 || number > AFS_MAX_INTERFACE_ADDR) {
3742 ("Invalid number of alternate addresses is %d\n", number));
3747 * The client's notion of its own IP addresses is not reliable.
3749 * 1. The client list might contain private address ranges which
3750 * are likely to be re-used by many clients allocated addresses
3753 * 2. The client list will not include any public addresses that
3754 * are hidden by a NAT.
3756 * 3. Private address ranges that are exposed to the server will
3757 * be obtained from the rx connections that use them.
3759 * 4. Lists provided by the client are not necessarily truthful.
3760 * Many existing clients (UNIX) do not refresh the IP address
3761 * list as the actual assigned addresses change. The end result
3762 * is that they report the initial address list for the lifetime
3763 * of the process. In other words, a client can report addresses
3764 * that they are in fact not using. Adding these addresses to
3765 * the host interface list without verification is not only
3766 * pointless, it is downright dangerous.
3768 * We therefore do not add alternate addresses to the addr hash table.
3769 * We only use them for multi-rx callback breaks.
3773 * Convert IP addresses to network byte order, and remove
3774 * duplicate IP addresses from the interface list, and
3775 * determine whether or not the incoming addr/port is
3776 * listed. Note that if the address matches it is not
3777 * truly a match because the port number for the entries
3778 * in the interface list are port 7001 and the port number
3779 * for this connection might not be 7001.
3781 for (i = 0, count = 0, found = 0; i < number; i++) {
3782 interf->addr_in[i] = htonl(interf->addr_in[i]);
3783 for (j = 0; j < count; j++) {
3784 if (interf->addr_in[j] == interf->addr_in[i])
3788 interf->addr_in[count] = interf->addr_in[i];
3789 if (interf->addr_in[count] == myAddr &&
3797 * Allocate and initialize an interface structure for this host.
3800 interface = (struct Interface *)
3801 malloc(sizeof(struct Interface) +
3802 (sizeof(struct AddrPort) * (count - 1)));
3804 ViceLog(0, ("Failed malloc in initInterfaceAddr_r 1\n"));
3807 interface->numberOfInterfaces = count;
3809 interface = (struct Interface *)
3810 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * count));
3812 ViceLog(0, ("Failed malloc in initInterfaceAddr_r 2\n"));
3815 interface->numberOfInterfaces = count + 1;
3816 interface->interface[count].addr = myAddr;
3817 interface->interface[count].port = myPort;
3818 interface->interface[count].valid = 1;
3821 for (i = 0; i < count; i++) {
3823 interface->interface[i].addr = interf->addr_in[i];
3824 /* We store the port as 7001 because the addresses reported by
3825 * TellMeAboutYourself and WhoAreYou RPCs are only valid if they
3826 * are coming from fully connected hosts (no NAT/PATs)
3828 interface->interface[i].port = port7001;
3829 interface->interface[i].valid =
3830 (interf->addr_in[i] == myAddr && port7001 == myPort) ? 1 : 0;
3833 interface->uuid = interf->uuid;
3835 assert(!host->interface);
3836 host->interface = interface;
3838 if (LogLevel >= 125) {
3839 afsUUID_to_string(&interface->uuid, uuidstr, 127);
3841 ViceLog(125, ("--- uuid %s\n", uuidstr));
3842 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
3843 ViceLog(125, ("--- alt address %s:%d\n",
3844 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
3845 ntohs(host->interface->interface[i].port)));
3852 /* deleted a HashChain structure for this address and host */
3853 /* returns 1 on success */
3855 h_DeleteHostFromAddrHashTable_r(afs_uint32 addr, afs_uint16 port,
3859 register struct h_AddrHashChain **hp, *th;
3861 if (addr == 0 && port == 0)
3864 for (hp = &hostAddrHashTable[h_HashIndex(addr)]; (th = *hp);
3866 assert(th->hostPtr);
3867 if (th->hostPtr == host && th->addr == addr && th->port == port) {
3868 ViceLog(125, ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d)\n",
3869 host, afs_inet_ntoa_r(host->host, hoststr),
3870 ntohs(host->port)));
3877 ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) not found\n",
3878 host, afs_inet_ntoa_r(host->host, hoststr),
3879 ntohs(host->port)));
3885 ** prints out all alternate interface address for the host. The 'level'
3886 ** parameter indicates what level of debugging sets this output
3889 printInterfaceAddr(struct host *host, int level)
3894 if (host->interface) {
3895 /* check alternate addresses */
3896 number = host->interface->numberOfInterfaces;
3898 ViceLog(level, ("no-addresses "));
3900 for (i = 0; i < number; i++)
3901 ViceLog(level, ("%s:%d ", afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
3902 ntohs(host->interface->interface[i].port)));
3905 ViceLog(level, ("\n"));