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>
18 #ifdef HAVE_SYS_FILE_H
23 #include <afs/afs_assert.h>
26 #include <afs/afsint.h>
27 #define FSINT_COMMON_XG
28 #include <afs/afscbint.h>
29 #include <afs/rxgen_consts.h>
31 #include <afs/errors.h>
32 #include <afs/ihandle.h>
33 #include <afs/vnode.h>
34 #include <afs/volume.h>
35 #ifdef AFS_ATHENA_STDENV
39 #include <afs/ptclient.h>
40 #include <afs/ptuser.h>
41 #include <afs/prs_fs.h>
43 #include <afs/afsutil.h>
44 #include <afs/com_err.h>
46 #include <afs/cellconfig.h>
47 #include "viced_prototypes.h"
51 #ifdef AFS_DEMAND_ATTACH_FS
52 #include "../util/afsutil_prototypes.h"
53 #include "../tviced/serialize_state.h"
54 #endif /* AFS_DEMAND_ATTACH_FS */
56 #ifdef AFS_PTHREAD_ENV
57 pthread_mutex_t host_glock_mutex;
58 #endif /* AFS_PTHREAD_ENV */
61 extern int CurrentConnections;
63 extern int AnonymousID;
64 extern prlist AnonCPS;
66 extern struct afsconf_dir *confDir; /* config dir object */
67 extern int lwps; /* the max number of server threads */
68 extern afsUUID FS_HostUUID;
71 int CEs = 0; /* active clients */
72 int CEBlocks = 0; /* number of blocks of CEs */
73 struct client *CEFree = 0; /* first free client */
74 struct host *hostList = 0; /* linked list of all hosts */
75 int hostCount = 0; /* number of hosts in hostList */
79 static struct rx_securityClass *sc = NULL;
81 static void h_SetupCallbackConn_r(struct host * host);
82 static int h_threadquota(int);
84 #define CESPERBLOCK 73
85 struct CEBlock { /* block of CESPERBLOCK file entries */
86 struct client entry[CESPERBLOCK];
89 void h_TossStuff_r(struct host *host);
92 * Make sure the subnet macros have been defined.
95 #define IN_SUBNETA(i) ((((afs_int32)(i))&0x80800000)==0x00800000)
98 #ifndef IN_CLASSA_SUBNET
99 #define IN_CLASSA_SUBNET 0xffff0000
103 #define IN_SUBNETB(i) ((((afs_int32)(i))&0xc0008000)==0x80008000)
106 #ifndef IN_CLASSB_SUBNET
107 #define IN_CLASSB_SUBNET 0xffffff00
111 /* get a new block of CEs and chain it on CEFree */
115 struct CEBlock *block;
118 block = (struct CEBlock *)malloc(sizeof(struct CEBlock));
120 ViceLog(0, ("Failed malloc in GetCEBlock\n"));
121 ShutDownAndCore(PANIC);
124 for (i = 0; i < (CESPERBLOCK - 1); i++) {
125 Lock_Init(&block->entry[i].lock);
126 block->entry[i].next = &(block->entry[i + 1]);
128 block->entry[CESPERBLOCK - 1].next = 0;
129 Lock_Init(&block->entry[CESPERBLOCK - 1].lock);
130 CEFree = (struct client *)block;
136 /* get the next available CE */
137 static struct client *
140 struct client *entry;
145 ViceLog(0, ("CEFree NULL in GetCE\n"));
146 ShutDownAndCore(PANIC);
150 CEFree = entry->next;
152 memset(entry, 0, CLIENT_TO_ZERO(entry));
158 /* return an entry to the free list */
160 FreeCE(struct client *entry)
162 entry->VenusEpoch = 0;
164 entry->next = CEFree;
171 * The HTs and HTBlocks variables were formerly static, but they are
172 * now referenced elsewhere in the FileServer.
174 int HTs = 0; /* active file entries */
175 int HTBlocks = 0; /* number of blocks of HTs */
176 static struct host *HTFree = 0; /* first free file entry */
179 * Hash tables of host pointers. We need two tables, one
180 * to map IP addresses onto host pointers, and another
181 * to map host UUIDs onto host pointers.
183 static struct h_AddrHashChain *hostAddrHashTable[h_HASHENTRIES];
184 static struct h_UuidHashChain *hostUuidHashTable[h_HASHENTRIES];
185 #define h_HashIndex(hostip) (ntohl(hostip) & (h_HASHENTRIES-1))
186 #define h_UuidHashIndex(uuidp) (((int)(afs_uuid_hash(uuidp))) & (h_HASHENTRIES-1))
188 struct HTBlock { /* block of HTSPERBLOCK file entries */
189 struct host entry[h_HTSPERBLOCK];
193 /* get a new block of HTs and chain it on HTFree */
197 struct HTBlock *block;
199 static int index = 0;
201 if (HTBlocks == h_MAXHOSTTABLES) {
202 ViceLog(0, ("h_MAXHOSTTABLES reached\n"));
203 ShutDownAndCore(PANIC);
206 block = (struct HTBlock *)malloc(sizeof(struct HTBlock));
208 ViceLog(0, ("Failed malloc in GetHTBlock\n"));
209 ShutDownAndCore(PANIC);
211 #ifdef AFS_PTHREAD_ENV
212 for (i = 0; i < (h_HTSPERBLOCK); i++)
213 CV_INIT(&block->entry[i].cond, "block entry", CV_DEFAULT, 0);
214 #endif /* AFS_PTHREAD_ENV */
215 for (i = 0; i < (h_HTSPERBLOCK); i++)
216 Lock_Init(&block->entry[i].lock);
217 for (i = 0; i < (h_HTSPERBLOCK - 1); i++)
218 block->entry[i].next = &(block->entry[i + 1]);
219 for (i = 0; i < (h_HTSPERBLOCK); i++)
220 block->entry[i].index = index++;
221 block->entry[h_HTSPERBLOCK - 1].next = 0;
222 HTFree = (struct host *)block;
223 hosttableptrs[HTBlocks++] = block->entry;
228 /* get the next available HT */
236 osi_Assert(HTFree != NULL);
238 HTFree = entry->next;
240 memset(entry, 0, HOST_TO_ZERO(entry));
246 /* return an entry to the free list */
248 FreeHT(struct host *entry)
250 entry->next = HTFree;
257 hpr_Initialize(struct ubik_client **uclient)
260 struct rx_connection *serverconns[MAXSERVERS];
261 struct rx_securityClass *sc;
262 struct afsconf_dir *tdir;
264 struct afsconf_cell info;
268 tdir = afsconf_Open(AFSDIR_SERVER_ETC_DIRPATH);
270 ViceLog(0, ("hpr_Initialize: Could not open configuration directory: %s", AFSDIR_SERVER_ETC_DIRPATH));
274 code = afsconf_GetLocalCell(tdir, cellstr, sizeof(cellstr));
276 ViceLog(0, ("hpr_Initialize: Could not get local cell. [%d]", code));
281 code = afsconf_GetCellInfo(tdir, cellstr, "afsprot", &info);
283 ViceLog(0, ("hpr_Initialize: Could not locate cell %s in %s/%s",
284 cellstr, confDir->name, AFSDIR_CELLSERVDB_FILE));
291 ViceLog(0, ("hpr_Initialize: Could not initialize rx."));
296 /* Most callers use secLevel==1, however, the fileserver uses secLevel==2
297 * to force use of the KeyFile. secLevel == 0 implies -noauth was
299 code = afsconf_ClientAuthSecure(tdir, &sc, &scIndex);
301 ViceLog(0, ("hpr_Initialize: clientauthsecure returns %d %s "
302 "(so trying noauth)", code, afs_error_message(code)));
303 scIndex = RX_SECIDX_NULL;
304 sc = rxnull_NewClientSecurityObject();
307 if (scIndex == RX_SECIDX_NULL)
308 ViceLog(0, ("hpr_Initialize: Could not get afs tokens, "
309 "running unauthenticated. [%d]", code));
311 memset(serverconns, 0, sizeof(serverconns)); /* terminate list!!! */
312 for (i = 0; i < info.numServers; i++) {
314 rx_NewConnection(info.hostAddr[i].sin_addr.s_addr,
315 info.hostAddr[i].sin_port, PRSRV,
319 code = ubik_ClientInit(serverconns, uclient);
321 ViceLog(0, ("hpr_Initialize: ubik client init failed. [%d]", code));
324 code = rxs_Release(sc);
329 hpr_End(struct ubik_client *uclient)
334 code = ubik_ClientDestroy(uclient);
340 hpr_GetHostCPS(afs_int32 host, prlist *CPS)
342 #ifdef AFS_PTHREAD_ENV
345 struct ubik_client *uclient =
346 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
349 code = hpr_Initialize(&uclient);
351 osi_Assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
357 code = ubik_PR_GetHostCPS(uclient, 0, host, CPS, &over);
358 if (code != PRSUCCESS)
361 /* do something about this, probably make a new call */
362 /* don't forget there's a hard limit in the interface */
364 "membership list for host id %d exceeds display limit\n",
369 return pr_GetHostCPS(host, CPS);
374 hpr_NameToId(namelist *names, idlist *ids)
376 #ifdef AFS_PTHREAD_ENV
379 struct ubik_client *uclient =
380 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
383 code = hpr_Initialize(&uclient);
385 osi_Assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
390 for (i = 0; i < names->namelist_len; i++)
391 stolower(names->namelist_val[i]);
392 code = ubik_PR_NameToID(uclient, 0, names, ids);
395 return pr_NameToId(names, ids);
400 hpr_IdToName(idlist *ids, namelist *names)
402 #ifdef AFS_PTHREAD_ENV
404 struct ubik_client *uclient =
405 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
408 code = hpr_Initialize(&uclient);
410 osi_Assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
415 code = ubik_PR_IDToName(uclient, 0, ids, names);
418 return pr_IdToName(ids, names);
423 hpr_GetCPS(afs_int32 id, prlist *CPS)
425 #ifdef AFS_PTHREAD_ENV
428 struct ubik_client *uclient =
429 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
432 code = hpr_Initialize(&uclient);
434 osi_Assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
440 code = ubik_PR_GetCPS(uclient, 0, id, CPS, &over);
441 if (code != PRSUCCESS)
444 /* do something about this, probably make a new call */
445 /* don't forget there's a hard limit in the interface */
446 fprintf(stderr, "membership list for id %d exceeds display limit\n",
451 return pr_GetCPS(id, CPS);
455 static short consolePort = 0;
458 h_Lock_r(struct host *host)
468 * returns 1 if already locked
469 * else returns locks and returns 0
473 h_NBLock_r(struct host *host)
475 struct Lock *hostLock = &host->lock;
480 if (!(hostLock->excl_locked) && !(hostLock->readers_reading))
481 hostLock->excl_locked = WRITE_LOCK;
485 LOCK_UNLOCK(hostLock);
494 #if FS_STATS_DETAILED
495 /*------------------------------------------------------------------------
496 * PRIVATE h_AddrInSameNetwork
499 * Given a target IP address and a candidate IP address (both
500 * in host byte order), return a non-zero value (1) if the
501 * candidate address is in a different network from the target
505 * a_targetAddr : Target address.
506 * a_candAddr : Candidate address.
509 * 1 if the candidate address is in the same net as the target,
513 * The target and candidate addresses are both in host byte
514 * order, NOT network byte order, when passed in. We return
515 * our value as a character, since that's the type of field in
516 * the host structure, where this info will be stored.
520 *------------------------------------------------------------------------*/
523 h_AddrInSameNetwork(afs_uint32 a_targetAddr, afs_uint32 a_candAddr)
524 { /*h_AddrInSameNetwork */
526 afs_uint32 targetNet;
530 * Pull out the network and subnetwork numbers from the target
531 * and candidate addresses. We can short-circuit this whole
532 * affair if the target and candidate addresses are not of the
535 if (IN_CLASSA(a_targetAddr)) {
536 if (!(IN_CLASSA(a_candAddr))) {
539 targetNet = a_targetAddr & IN_CLASSA_NET;
540 candNet = a_candAddr & IN_CLASSA_NET;
541 } else if (IN_CLASSB(a_targetAddr)) {
542 if (!(IN_CLASSB(a_candAddr))) {
545 targetNet = a_targetAddr & IN_CLASSB_NET;
546 candNet = a_candAddr & IN_CLASSB_NET;
547 } /*Class B target */
548 else if (IN_CLASSC(a_targetAddr)) {
549 if (!(IN_CLASSC(a_candAddr))) {
552 targetNet = a_targetAddr & IN_CLASSC_NET;
553 candNet = a_candAddr & IN_CLASSC_NET;
554 } /*Class C target */
556 targetNet = a_targetAddr;
557 candNet = a_candAddr;
558 } /*Class D address */
561 * Now, simply compare the extracted net values for the two addresses
562 * (which at this point are known to be of the same class)
564 if (targetNet == candNet)
569 } /*h_AddrInSameNetwork */
570 #endif /* FS_STATS_DETAILED */
573 /* Assumptions: called with held host */
575 h_gethostcps_r(struct host *host, afs_int32 now)
580 /* wait if somebody else is already doing the getCPS call */
581 while (host->hostFlags & HCPS_INPROGRESS) {
582 slept = 1; /* I did sleep */
583 host->hostFlags |= HCPS_WAITING; /* I am sleeping now */
584 #ifdef AFS_PTHREAD_ENV
585 CV_WAIT(&host->cond, &host_glock_mutex);
586 #else /* AFS_PTHREAD_ENV */
587 if ((code = LWP_WaitProcess(&(host->hostFlags))) != LWP_SUCCESS)
588 ViceLog(0, ("LWP_WaitProcess returned %d\n", code));
589 #endif /* AFS_PTHREAD_ENV */
593 host->hostFlags |= HCPS_INPROGRESS; /* mark as CPSCall in progress */
594 if (host->hcps.prlist_val)
595 free(host->hcps.prlist_val); /* this is for hostaclRefresh */
596 host->hcps.prlist_val = NULL;
597 host->hcps.prlist_len = 0;
598 host->cpsCall = slept ? (FT_ApproxTime()) : (now);
601 code = hpr_GetHostCPS(ntohl(host->host), &host->hcps);
606 * Although ubik_Call (called by pr_GetHostCPS) traverses thru all protection servers
607 * and reevaluates things if no sync server or quorum is found we could still end up
608 * with one of these errors. In such case we would like to reevaluate the rpc call to
609 * find if there's cps for this guy. We treat other errors (except network failures
610 * ones - i.e. code < 0) as an indication that there is no CPS for this host. Ideally
611 * we could like to deal this problem the other way around (i.e. if code == NOCPS
612 * ignore else retry next time) but the problem is that there're other errors (i.e.
613 * EPERM) for which we don't want to retry and we don't know the whole code list!
615 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC) {
617 * We would have preferred to use a while loop and try again since ops in protected
618 * acls for this host will fail now but they'll be reevaluated on any subsequent
619 * call. The attempt to wait for a quorum/sync site or network error won't work
620 * since this problems really should only occurs during a complete fileserver
621 * restart. Since the fileserver will start before the ptservers (and thus before
622 * quorums are complete) clients will be utilizing all the fileserver's lwps!!
624 host->hcpsfailed = 1;
626 ("Warning: GetHostCPS failed (%d) for %p (%s:%d); will retry\n",
627 code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
629 host->hcpsfailed = 0;
631 ("gethost: GetHostCPS failed (%d) for %p (%s:%d); ignored\n",
632 code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
634 if (host->hcps.prlist_val)
635 free(host->hcps.prlist_val);
636 host->hcps.prlist_val = NULL;
637 host->hcps.prlist_len = 0; /* Make sure it's zero */
639 host->hcpsfailed = 0;
641 host->hostFlags &= ~HCPS_INPROGRESS;
642 /* signal all who are waiting */
643 if (host->hostFlags & HCPS_WAITING) { /* somebody is waiting */
644 host->hostFlags &= ~HCPS_WAITING;
645 #ifdef AFS_PTHREAD_ENV
646 CV_BROADCAST(&host->cond);
647 #else /* AFS_PTHREAD_ENV */
648 if ((code = LWP_NoYieldSignal(&(host->hostFlags))) != LWP_SUCCESS)
649 ViceLog(0, ("LWP_NoYieldSignal returns %d\n", code));
650 #endif /* AFS_PTHREAD_ENV */
654 /* args in net byte order */
656 h_flushhostcps(afs_uint32 hostaddr, afs_uint16 hport)
661 h_Lookup_r(hostaddr, hport, &host);
663 host->hcpsfailed = 1;
672 * Allocate a host. It will be identified by the peer (ip,port) info in the
673 * rx connection provided. The host is returned held and locked
675 #define DEF_ROPCONS 2115
678 h_Alloc_r(struct rx_connection *r_con)
680 struct servent *serverentry;
682 #if FS_STATS_DETAILED
683 afs_uint32 newHostAddr_HBO; /*New host IP addr, in host byte order */
684 #endif /* FS_STATS_DETAILED */
688 host->host = rxr_HostOf(r_con);
689 host->port = rxr_PortOf(r_con);
691 h_AddHostToAddrHashTable_r(host->host, host->port, host);
693 if (consolePort == 0) { /* find the portal number for console */
694 #if defined(AFS_OSF_ENV)
695 serverentry = getservbyname("ropcons", "");
697 serverentry = getservbyname("ropcons", 0);
700 consolePort = serverentry->s_port;
702 consolePort = htons(DEF_ROPCONS); /* Use a default */
704 if (host->port == consolePort)
706 /* Make a callback channel even for the console, on the off chance that it
707 * makes a request that causes a break call back. It shouldn't. */
708 h_SetupCallbackConn_r(host);
709 host->LastCall = host->cpsCall = host->ActiveCall = FT_ApproxTime();
711 host->hcps.prlist_val = NULL;
712 host->hcps.prlist_len = 0;
713 host->interface = NULL;
715 host->hcpsfailed = 0; /* save cycles */
716 h_gethostcps(host); /* do this under host hold/lock */
718 host->FirstClient = NULL;
721 h_InsertList_r(host); /* update global host List */
722 #if FS_STATS_DETAILED
724 * Compare the new host's IP address (in host byte order) with ours
725 * (the File Server's), remembering if they are in the same network.
727 newHostAddr_HBO = (afs_uint32) ntohl(host->host);
728 host->InSameNetwork =
729 h_AddrInSameNetwork(FS_HostAddr_HBO, newHostAddr_HBO);
730 #endif /* FS_STATS_DETAILED */
737 /* Make a callback channel even for the console, on the off chance that it
738 * makes a request that causes a break call back. It shouldn't. */
740 h_SetupCallbackConn_r(struct host * host)
743 sc = rxnull_NewClientSecurityObject();
744 host->callback_rxcon =
745 rx_NewConnection(host->host, host->port, 1, sc, 0);
746 rx_SetConnDeadTime(host->callback_rxcon, 50);
747 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
751 * Lookup a host given an IP address and UDP port number.
752 * hostaddr and hport are in network order
753 * hostaddr and hport are in network order
754 * On return, refCount is incremented.
757 h_Lookup_r(afs_uint32 haddr, afs_uint16 hport, struct host **hostp)
760 struct host *host = NULL;
761 struct h_AddrHashChain *chain;
762 int index = h_HashIndex(haddr);
763 extern int hostaclRefresh;
766 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
767 host = chain->hostPtr;
769 if (!(host->hostFlags & HOSTDELETED) && chain->addr == haddr
770 && chain->port == hport) {
771 if ((host->hostFlags & HWHO_INPROGRESS) &&
772 h_threadquota(host->lock.num_waiting)) {
778 if (host->hostFlags & HOSTDELETED) {
785 now = FT_ApproxTime(); /* always evaluate "now" */
786 if (host->hcpsfailed || (host->cpsCall + hostaclRefresh < now)) {
788 * Every hostaclRefresh period (def 2 hrs) get the new
789 * membership list for the host. Note this could be the
790 * first time that the host is added to a group. Also
791 * here we also retry on previous legitimate hcps failures.
793 * If we get here refCount is elevated.
795 h_gethostcps_r(host, now);
805 /* Lookup a host given its UUID. */
807 h_LookupUuid_r(afsUUID * uuidp)
809 struct host *host = 0;
810 struct h_UuidHashChain *chain;
811 int index = h_UuidHashIndex(uuidp);
813 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
814 host = chain->hostPtr;
816 if (!(host->hostFlags & HOSTDELETED) && host->interface
817 && afs_uuid_equal(&host->interface->uuid, uuidp)) {
825 /* h_TossStuff_r: Toss anything in the host structure (the host or
826 * clients marked for deletion. Called from h_Release_r ONLY.
827 * To be called, there must be no holds, and either host->deleted
828 * or host->clientDeleted must be set.
831 h_TossStuff_r(struct host *host)
833 struct client **cp, *client;
836 /* make sure host doesn't go away over h_NBLock_r */
839 code = h_NBLock_r(host);
841 /* don't use h_Release_r, since that may call h_TossStuff_r again */
844 /* if somebody still has this host locked */
848 ("Warning: h_TossStuff_r failed; Host %" AFS_PTR_FMT " (%s:%d) was locked.\n",
849 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
855 /* if somebody still has this host held */
856 /* we must check this _after_ h_NBLock_r, since h_NBLock_r can drop and
857 * reacquire H_LOCK */
858 if (host->refCount > 0) {
861 ("Warning: h_TossStuff_r failed; Host %" AFS_PTR_FMT " (%s:%d) was held.\n",
862 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
866 /* ASSUMPTION: rxi_FreeConnection() does not yield */
867 for (cp = &host->FirstClient; (client = *cp);) {
868 if ((host->hostFlags & HOSTDELETED) || client->deleted) {
870 ObtainWriteLockNoBlock(&client->lock, code);
874 ("Warning: h_TossStuff_r failed: Host %p (%s:%d) "
875 "client %p was locked.\n",
876 host, afs_inet_ntoa_r(host->host, hoststr),
877 ntohs(host->port), client));
881 if (client->refCount) {
884 ("Warning: h_TossStuff_r failed: Host %p (%s:%d) "
885 "client %p refcount %d.\n",
886 host, afs_inet_ntoa_r(host->host, hoststr),
887 ntohs(host->port), client, client->refCount));
888 /* This is the same thing we do if the host is locked */
889 ReleaseWriteLock(&client->lock);
892 client->CPS.prlist_len = 0;
893 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
894 free(client->CPS.prlist_val);
895 client->CPS.prlist_val = NULL;
896 CurrentConnections--;
898 ReleaseWriteLock(&client->lock);
904 /* We've just cleaned out all the deleted clients; clear the flag */
905 host->hostFlags &= ~CLIENTDELETED;
907 if (host->hostFlags & HOSTDELETED) {
908 struct rx_connection *rxconn;
909 struct AddrPort hostAddrPort;
912 if (host->Console & 1)
914 if ((rxconn = host->callback_rxcon)) {
915 host->callback_rxcon = (struct rx_connection *)0;
916 rx_DestroyConnection(rxconn);
918 if (host->hcps.prlist_val)
919 free(host->hcps.prlist_val);
920 host->hcps.prlist_val = NULL;
921 host->hcps.prlist_len = 0;
922 DeleteAllCallBacks_r(host, 1);
923 host->hostFlags &= ~RESETDONE; /* just to be safe */
925 /* if alternate addresses do not exist */
926 if (!(host->interface)) {
927 h_DeleteHostFromAddrHashTable_r(host->host, host->port, host);
929 h_DeleteHostFromUuidHashTable_r(host);
930 h_DeleteHostFromAddrHashTable_r(host->host, host->port, host);
931 /* delete the hash entry for each valid alternate addresses */
932 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
933 hostAddrPort = host->interface->interface[i];
935 * if the interface addr/port is the primary, we already
936 * removed it. If the addr/port is not valid, its not
939 if (hostAddrPort.valid &&
940 (host->host != hostAddrPort.addr ||
941 host->port != hostAddrPort.port))
942 h_DeleteHostFromAddrHashTable_r(hostAddrPort.addr, hostAddrPort.port, host);
944 free(host->interface);
945 host->interface = NULL;
946 } /* if alternate address exists */
948 h_DeleteList_r(host); /* remove host from global host List */
955 /* h_Enumerate: Calls (*proc)(host, param) for at least each host in the
956 * system at the start of the enumeration (perhaps more). Hosts may be deleted
957 * (have delete flag set); ditto for clients. refCount is always incremented
958 * before (*proc) is called.
960 * The return value of the proc is a set of flags. The proc should set
961 * H_ENUMERATE_BAIL(foo) if the enumeration of hosts should be stopped early.
964 h_Enumerate(int (*proc) (struct host*, void *), void *param)
966 struct host *host, **list;
971 if (hostCount == 0) {
975 list = (struct host **)malloc(hostCount * sizeof(struct host *));
977 ViceLogThenPanic(0, ("Failed malloc in h_Enumerate (list)\n"));
979 for (totalCount = count = 0, host = hostList;
980 host && totalCount < hostCount;
981 host = host->next, totalCount++) {
983 if (!(host->hostFlags & HOSTDELETED)) {
989 if (totalCount != hostCount) {
990 ViceLog(0, ("h_Enumerate found %d of %d hosts\n", totalCount, hostCount));
991 } else if (host != NULL) {
992 ViceLog(0, ("h_Enumerate found more than %d hosts\n", hostCount));
993 ShutDownAndCore(PANIC);
996 for (i = 0; i < count; i++) {
998 flags = (*proc) (list[i], param);
1000 h_Release_r(list[i]);
1002 /* bail out of the enumeration early */
1003 if (H_ENUMERATE_ISSET_BAIL(flags)) {
1006 ViceLog(0, ("h_Enumerate got back invalid return value %d\n", flags));
1007 ShutDownAndCore(PANIC);
1011 /* we bailed out of enumerating hosts early; we still have holds on
1012 * some of the hosts in 'list', so release them */
1015 for ( ; i < count; i++) {
1016 h_Release_r(list[i]);
1024 /* h_Enumerate_r (revised):
1025 * Calls (*proc)(host, param) for each host in hostList, starting
1026 * at enumstart. Called only under H_LOCK. Hosts may be deleted (have
1027 * delete flag set); ditto for clients. refCount is always incremented
1028 * before (*proc) is called.
1030 * @note Assumes that hostList is only prepended to, that a host is never
1031 * inserted into the middle. Otherwise this would not be guaranteed to
1034 * The return value of the proc is a set of flags. The proc should set
1035 * H_ENUMERATE_BAIL(foo) if the enumeration of hosts should be stopped early.
1038 h_Enumerate_r(int (*proc) (struct host *, void *),
1039 struct host *enumstart, void *param)
1041 struct host *host, *next;
1045 if (hostCount == 0) {
1052 /* find the first non-deleted host, so we know where to actually start
1054 for (count = 0; host && count < hostCount; count++) {
1055 if (!(host->hostFlags & HOSTDELETED)) {
1062 /* we didn't find a non-deleted host... */
1064 if (host && count >= hostCount) {
1065 /* ...because we found a loop */
1066 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", hostCount));
1067 ShutDownAndCore(PANIC);
1070 /* ...because the hostList is full of deleted hosts */
1074 h_Hold_r(enumstart);
1076 /* remember hostCount, lest it change over the potential H_LOCK drop in
1078 origHostCount = hostCount;
1080 for (count = 0, host = enumstart; host && count < origHostCount; host = next, count++) {
1083 /* find the next non-deleted host */
1084 while (next && (next->hostFlags & HOSTDELETED)) {
1086 /* inc count for the skipped-over host */
1087 if (++count > origHostCount) {
1088 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", origHostCount));
1089 ShutDownAndCore(PANIC);
1095 if (!(host->hostFlags & HOSTDELETED)) {
1097 flags = (*proc) (host, param);
1098 if (H_ENUMERATE_ISSET_BAIL(flags)) {
1099 h_Release_r(host); /* this might free up the host */
1105 ViceLog(0, ("h_Enumerate_r got back invalid return value %d\n", flags));
1106 ShutDownAndCore(PANIC);
1109 h_Release_r(host); /* this might free up the host */
1111 if (host != NULL && count >= origHostCount) {
1112 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", origHostCount));
1113 ShutDownAndCore(PANIC);
1115 } /*h_Enumerate_r */
1118 /* inserts a new HashChain structure corresponding to this UUID */
1120 h_AddHostToUuidHashTable_r(struct afsUUID *uuid, struct host *host)
1123 struct h_UuidHashChain *chain;
1124 char uuid1[128], uuid2[128];
1127 /* hash into proper bucket */
1128 index = h_UuidHashIndex(uuid);
1130 /* don't add the same entry multiple times */
1131 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
1132 if (!chain->hostPtr)
1135 if (chain->hostPtr->interface &&
1136 afs_uuid_equal(&chain->hostPtr->interface->uuid, uuid)) {
1137 if (LogLevel >= 125) {
1138 afsUUID_to_string(&chain->hostPtr->interface->uuid, uuid1,
1140 afsUUID_to_string(uuid, uuid2, 127);
1141 ViceLog(125, ("h_AddHostToUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s) exists as %s:%d (uuid %s)\n",
1143 afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1144 ntohs(chain->hostPtr->port), uuid2));
1150 /* insert into beginning of list for this bucket */
1151 chain = (struct h_UuidHashChain *)malloc(sizeof(struct h_UuidHashChain));
1153 ViceLogThenPanic(0, ("Failed malloc in h_AddHostToUuidHashTable_r\n"));
1155 chain->hostPtr = host;
1156 chain->next = hostUuidHashTable[index];
1157 hostUuidHashTable[index] = chain;
1160 afsUUID_to_string(uuid, uuid2, 127);
1162 ("h_AddHostToUuidHashTable_r: host %p (%s:%d) added as uuid %s\n",
1163 host, afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1164 ntohs(chain->hostPtr->port), uuid2));
1167 /* deletes a HashChain structure corresponding to this host */
1169 h_DeleteHostFromUuidHashTable_r(struct host *host)
1172 struct h_UuidHashChain **uhp, *uth;
1176 if (!host->interface)
1179 /* hash into proper bucket */
1180 index = h_UuidHashIndex(&host->interface->uuid);
1182 if (LogLevel >= 125)
1183 afsUUID_to_string(&host->interface->uuid, uuid1, 127);
1184 for (uhp = &hostUuidHashTable[index]; (uth = *uhp); uhp = &uth->next) {
1185 osi_Assert(uth->hostPtr);
1186 if (uth->hostPtr == host) {
1188 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d)\n",
1189 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1190 ntohs(host->port)));
1197 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d) not found\n",
1198 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1199 ntohs(host->port)));
1204 * This is called with host locked and held.
1206 * All addresses are in network byte order.
1209 invalidateInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1213 struct Interface *interface;
1214 char hoststr[16], hoststr2[16];
1217 osi_Assert(host->interface);
1219 ViceLog(125, ("invalidateInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1220 host, afs_inet_ntoa_r(host->host, hoststr),
1221 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1225 * Make sure this address is on the list of known addresses
1228 interface = host->interface;
1229 number = host->interface->numberOfInterfaces;
1230 for (i = 0; i < number; i++) {
1231 if (interface->interface[i].addr == addr &&
1232 interface->interface[i].port == port) {
1233 if (interface->interface[i].valid) {
1234 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1235 interface->interface[i].valid = 0;
1246 * This is called with host locked and held. This function differs
1247 * from removeInterfaceAddr_r in that it is called when the address
1248 * is being removed from the host regardless of whether or not there
1249 * is an interface list for the host. This function will delete the
1250 * host if there are no addresses left on it.
1252 * All addresses are in network byte order.
1255 removeAddress_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1258 char hoststr[16], hoststr2[16];
1259 struct rx_connection *rxconn;
1261 if (!host->interface || host->interface->numberOfInterfaces == 1) {
1262 if (host->host == addr && host->port == port) {
1264 ("Removing only address for host %" AFS_PTR_FMT " (%s:%d), deleting host.\n",
1265 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1266 host->hostFlags |= HOSTDELETED;
1268 * Do not remove the primary addr/port from the hash table.
1269 * It will be ignored due to the HOSTDELETED flag and will
1270 * be removed when h_TossStuff_r() cleans up the HOSTDELETED
1271 * host. Removing it here will only result in a search for
1272 * the host/addr/port in the hash chain which will fail.
1276 ("Removing address that does not belong to host %" AFS_PTR_FMT " (%s:%d).\n",
1277 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1280 if (host->host == addr && host->port == port) {
1281 removeInterfaceAddr_r(host, addr, port);
1283 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1284 if (host->interface->interface[i].valid) {
1286 ("Removed address for host %" AFS_PTR_FMT " (%s:%d), new primary interface %s:%d.\n",
1287 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1288 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr2),
1289 ntohs(host->interface->interface[i].port)));
1290 host->host = host->interface->interface[i].addr;
1291 host->port = host->interface->interface[i].port;
1292 h_AddHostToAddrHashTable_r(host->host, host->port, host);
1297 if (i == host->interface->numberOfInterfaces) {
1299 ("Removed only address for host %" AFS_PTR_FMT " (%s:%d), no valid alternate interfaces, deleting host.\n",
1300 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1301 host->hostFlags |= HOSTDELETED;
1302 /* addr/port was removed from the hash table */
1306 rxconn = host->callback_rxcon;
1307 host->callback_rxcon = NULL;
1310 rx_DestroyConnection(rxconn);
1314 h_SetupCallbackConn_r(host);
1317 /* not the primary addr/port, just invalidate it */
1318 invalidateInterfaceAddr_r(host, addr, port);
1326 createHostAddrHashChain_r(int index, afs_uint32 addr, afs_uint16 port, struct host *host)
1328 struct h_AddrHashChain *chain;
1331 /* insert into beginning of list for this bucket */
1332 chain = (struct h_AddrHashChain *)malloc(sizeof(struct h_AddrHashChain));
1334 ViceLogThenPanic(0, ("Failed malloc in h_AddHostToAddrHashTable_r\n"));
1336 chain->hostPtr = host;
1337 chain->next = hostAddrHashTable[index];
1340 hostAddrHashTable[index] = chain;
1341 ViceLog(125, ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " added as %s:%d\n",
1342 host, afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1346 * Resolve host address conflicts when hashing by address.
1348 * @param[in] addr an ip address of the interface
1349 * @param[in] port the port of the interface
1350 * @param[in] newHost the host being added with this address
1351 * @param[in] oldHost the host previously added with this address
1354 reconcileHosts_r(afs_uint32 addr, afs_uint16 port, struct host *newHost,
1355 struct host *oldHost)
1357 struct rx_connection *cb = NULL;
1359 struct interfaceAddr interf;
1361 afsUUID *newHostUuid = &nulluuid;
1362 afsUUID *oldHostUuid = &nulluuid;
1366 ("reconcileHosts_r: addr %s:%d newHost %" AFS_PTR_FMT " oldHost %"
1367 AFS_PTR_FMT, afs_inet_ntoa_r(addr, hoststr), ntohs(port),
1370 osi_Assert(oldHost != newHost);
1371 caps.Capabilities_val = NULL;
1374 sc = rxnull_NewClientSecurityObject();
1377 cb = rx_NewConnection(addr, port, 1, sc, 0);
1378 rx_SetConnDeadTime(cb, 50);
1379 rx_SetConnHardDeadTime(cb, AFS_HARDDEADTIME);
1384 code = RXAFSCB_TellMeAboutYourself(cb, &interf, &caps);
1385 if (code == RXGEN_OPCODE) {
1386 code = RXAFSCB_WhoAreYou(cb, &interf);
1390 if (code == RXGEN_OPCODE ||
1391 (code == 0 && afs_uuid_equal(&interf.uuid, &nulluuid))) {
1393 ("reconcileHosts_r: WhoAreYou not supported for connection (%s:%d), error %d\n",
1394 afs_inet_ntoa_r(addr, hoststr), ntohs(port), code));
1399 ("reconcileHosts_r: WhoAreYou failed for connection (%s:%d), error %d\n",
1400 afs_inet_ntoa_r(addr, hoststr), ntohs(port), code));
1404 /* Since lock was dropped, the hosts may have been deleted during the rpcs. */
1405 if ((newHost->hostFlags & HOSTDELETED)
1406 && (oldHost->hostFlags & HOSTDELETED)) {
1408 ("reconcileHosts_r: new and old hosts were deleted during probe.\n"));
1412 /* A check can be done if at least one of the hosts has a uuid. It
1413 * is an error if the hosts have the same (not null) uuid. */
1414 if ((!(newHost->hostFlags & HOSTDELETED)) && newHost->interface) {
1415 newHostUuid = &(newHost->interface->uuid);
1417 if ((!(oldHost->hostFlags & HOSTDELETED)) && oldHost->interface) {
1418 oldHostUuid = &(oldHost->interface->uuid);
1420 if (afs_uuid_equal(newHostUuid, &nulluuid) &&
1421 afs_uuid_equal(oldHostUuid, &nulluuid)) {
1423 ("reconcileHosts_r: Cannot reconcile hosts for connection (%s:%d), no uuids\n",
1424 afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1427 if (afs_uuid_equal(newHostUuid, oldHostUuid)) {
1429 ("reconcileHosts_r: Cannot reconcile hosts for connection (%s:%d), same uuids\n",
1430 afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1434 /* Determine which host should be hashed */
1435 if ((!(newHost->hostFlags & HOSTDELETED))
1436 && afs_uuid_equal(newHostUuid, &(interf.uuid))) {
1437 /* Install the new host into the hash before removing the stale
1438 * addresses. Walk the hash chain again since the hash table may have
1439 * been changed when the host lock was dropped to get the uuid. */
1440 struct h_AddrHashChain *chain;
1441 int index = h_HashIndex(addr);
1442 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1443 if (chain->addr == addr && chain->port == port) {
1444 chain->hostPtr = newHost;
1445 removeAddress_r(oldHost, addr, port);
1449 createHostAddrHashChain_r(index, addr, port, newHost);
1450 removeAddress_r(oldHost, addr, port);
1453 if ((!(oldHost->hostFlags & HOSTDELETED))
1454 && afs_uuid_equal(oldHostUuid, &(interf.uuid))) {
1455 removeAddress_r(newHost, addr, port);
1460 if (!(newHost->hostFlags & HOSTDELETED)) {
1461 removeAddress_r(newHost, addr, port);
1463 if (!(oldHost->hostFlags & HOSTDELETED)) {
1464 removeAddress_r(oldHost, addr, port);
1468 h_Release_r(newHost);
1469 h_Release_r(oldHost);
1470 rx_DestroyConnection(cb);
1474 /* inserts a new HashChain structure corresponding to this address */
1476 h_AddHostToAddrHashTable_r(afs_uint32 addr, afs_uint16 port, struct host *host)
1479 struct h_AddrHashChain *chain;
1482 /* hash into proper bucket */
1483 index = h_HashIndex(addr);
1485 /* don't add the same address:port pair entry multiple times */
1486 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1487 if (chain->addr == addr && chain->port == port) {
1488 if (chain->hostPtr == host) {
1490 ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) already hashed\n",
1491 host, afs_inet_ntoa_r(chain->addr, hoststr),
1492 ntohs(chain->port)));
1495 if (!(chain->hostPtr->hostFlags & HOSTDELETED)) {
1496 /* attempt to resolve host address collision */
1497 reconcileHosts_r(addr, port, host, chain->hostPtr);
1502 createHostAddrHashChain_r(index, addr, port, host);
1506 * This is called with host locked and held.
1507 * It is called to either validate or add an additional interface
1508 * address/port on the specified host.
1510 * All addresses are in network byte order.
1513 addInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1517 struct Interface *interface;
1518 char hoststr[16], hoststr2[16];
1521 osi_Assert(host->interface);
1524 * Make sure this address is on the list of known addresses
1527 number = host->interface->numberOfInterfaces;
1528 for (i = 0; i < number; i++) {
1529 if (host->interface->interface[i].addr == addr &&
1530 host->interface->interface[i].port == port) {
1532 ("addInterfaceAddr : found host %" AFS_PTR_FMT " (%s:%d) adding %s:%d%s\n",
1533 host, afs_inet_ntoa_r(host->host, hoststr),
1534 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1535 ntohs(port), host->interface->interface[i].valid ? "" :
1538 if (host->interface->interface[i].valid == 0) {
1539 host->interface->interface[i].valid = 1;
1540 h_AddHostToAddrHashTable_r(addr, port, host);
1546 ViceLog(125, ("addInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) adding %s:%d\n",
1547 host, afs_inet_ntoa_r(host->host, hoststr),
1548 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1551 interface = (struct Interface *)
1552 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * number));
1554 ViceLogThenPanic(0, ("Failed malloc in addInterfaceAddr_r\n"));
1556 interface->numberOfInterfaces = number + 1;
1557 interface->uuid = host->interface->uuid;
1558 for (i = 0; i < number; i++)
1559 interface->interface[i] = host->interface->interface[i];
1561 /* Add the new valid interface */
1562 interface->interface[number].addr = addr;
1563 interface->interface[number].port = port;
1564 interface->interface[number].valid = 1;
1565 h_AddHostToAddrHashTable_r(addr, port, host);
1566 free(host->interface);
1567 host->interface = interface;
1574 * This is called with host locked and held.
1576 * All addresses are in network byte order.
1579 removeInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1583 struct Interface *interface;
1584 char hoststr[16], hoststr2[16];
1587 osi_Assert(host->interface);
1589 ViceLog(125, ("removeInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1590 host, afs_inet_ntoa_r(host->host, hoststr),
1591 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1595 * Make sure this address is on the list of known addresses
1598 interface = host->interface;
1599 number = host->interface->numberOfInterfaces;
1600 for (i = 0; i < number; i++) {
1601 if (interface->interface[i].addr == addr &&
1602 interface->interface[i].port == port) {
1603 if (interface->interface[i].valid)
1604 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1606 for (; i < number; i++) {
1607 interface->interface[i] = interface->interface[i+1];
1609 interface->numberOfInterfaces = number;
1620 h_threadquota(int waiting)
1625 } else if (lwps > 32) {
1628 } else if (lwps > 16) {
1638 /* If found, host is returned with refCount incremented */
1640 h_GetHost_r(struct rx_connection *tcon)
1643 struct host *oldHost;
1645 struct interfaceAddr interf;
1646 int interfValid = 0;
1647 struct Identity *identP = NULL;
1650 char hoststr[16], hoststr2[16];
1652 struct rx_connection *cb_conn = NULL;
1653 struct rx_connection *cb_in = NULL;
1655 caps.Capabilities_val = NULL;
1657 haddr = rxr_HostOf(tcon);
1658 hport = rxr_PortOf(tcon);
1661 rx_DestroyConnection(cb_in);
1664 if (caps.Capabilities_val)
1665 free(caps.Capabilities_val);
1666 caps.Capabilities_val = NULL;
1667 caps.Capabilities_len = 0;
1670 if (h_Lookup_r(haddr, hport, &host))
1672 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
1673 if (host && !identP && !(host->Console & 1)) {
1674 /* This is a new connection, and we already have a host
1675 * structure for this address. Verify that the identity
1676 * of the caller matches the identity in the host structure.
1678 if ((host->hostFlags & HWHO_INPROGRESS) &&
1679 h_threadquota(host->lock.num_waiting)) {
1685 if (!(host->hostFlags & ALTADDR) ||
1686 (host->hostFlags & HOSTDELETED)) {
1687 /* Another thread is doing initialization
1688 * or this host was deleted while we
1689 * waited for the lock. */
1692 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1693 host, afs_inet_ntoa_r(host->host, hoststr),
1694 ntohs(host->port)));
1698 host->hostFlags |= HWHO_INPROGRESS;
1699 host->hostFlags &= ~ALTADDR;
1701 /* We received a new connection from an IP address/port
1702 * that is associated with 'host' but the address/port of
1703 * the callback connection does not have to match it.
1704 * If there is a match, we can use the existing callback
1705 * connection to verify the UUID. If they do not match
1706 * we need to use a new callback connection to verify the
1707 * UUID of the incoming caller and perhaps use the old
1708 * callback connection to verify that the old address/port
1712 cb_conn = host->callback_rxcon;
1713 rx_GetConnection(cb_conn);
1715 if (haddr == host->host && hport == host->port) {
1716 /* The existing callback connection matches the
1717 * incoming connection so just use it.
1720 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1721 if (code == RXGEN_OPCODE)
1722 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1724 /* We do not have a match. Create a new connection
1725 * for the new addr/port and use multi_Rx to probe
1726 * both of them simultaneously.
1729 sc = rxnull_NewClientSecurityObject();
1730 cb_in = rx_NewConnection(haddr, hport, 1, sc, 0);
1731 rx_SetConnDeadTime(cb_in, 50);
1732 rx_SetConnHardDeadTime(cb_in, AFS_HARDDEADTIME);
1735 RXAFSCB_TellMeAboutYourself(cb_in, &interf, &caps);
1736 if (code == RXGEN_OPCODE)
1737 code = RXAFSCB_WhoAreYou(cb_in, &interf);
1739 rx_PutConnection(cb_conn);
1742 if ((code == RXGEN_OPCODE) ||
1743 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1744 identP = (struct Identity *)malloc(sizeof(struct Identity));
1746 ViceLogThenPanic(0, ("Failed malloc in h_GetHost_r\n"));
1749 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1750 if (cb_in == NULL) {
1751 /* The host on this connection was unable to respond to
1752 * the WhoAreYou. We will treat this as a new connection
1753 * from the existing host. The worst that can happen is
1754 * that we maintain some extra callback state information */
1755 if (host->interface) {
1757 ("Host %" AFS_PTR_FMT " (%s:%d) used to support WhoAreYou, deleting.\n",
1759 afs_inet_ntoa_r(host->host, hoststr),
1760 ntohs(host->port)));
1761 host->hostFlags |= HOSTDELETED;
1762 host->hostFlags &= ~HWHO_INPROGRESS;
1769 /* The incoming connection does not support WhoAreYou but
1770 * the original one might have. Use removeAddress_r() to
1771 * remove this addr/port from the host that was found.
1772 * If there are no more addresses left for the host it
1773 * will be deleted. Then we retry.
1775 removeAddress_r(host, haddr, hport);
1776 host->hostFlags &= ~HWHO_INPROGRESS;
1777 host->hostFlags |= ALTADDR;
1783 } else if (code == 0) {
1785 identP = (struct Identity *)malloc(sizeof(struct Identity));
1787 ViceLogThenPanic(0, ("Failed malloc in h_GetHost_r\n"));
1790 identP->uuid = interf.uuid;
1791 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1792 /* Check whether the UUID on this connection matches
1793 * the UUID in the host structure. If they don't match
1794 * then this is not the same host as before. */
1795 if (!host->interface
1796 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid)) {
1799 ("Uuid doesn't match connection (%s:%d).\n",
1800 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport)));
1801 removeAddress_r(host, haddr, hport);
1804 ("Uuid doesn't match host %" AFS_PTR_FMT " (%s:%d).\n",
1805 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1807 removeAddress_r(host, host->host, host->port);
1809 host->hostFlags &= ~HWHO_INPROGRESS;
1810 host->hostFlags |= ALTADDR;
1816 /* the UUID matched the client at the incoming addr/port
1817 * but this is not the address of the active callback
1818 * connection. Try that connection and see if the client
1819 * is still there and if the reported UUID is the same.
1822 afsUUID uuid = host->interface->uuid;
1823 cb_conn = host->callback_rxcon;
1824 rx_GetConnection(cb_conn);
1825 rx_SetConnDeadTime(cb_conn, 2);
1826 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1828 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1830 rx_SetConnDeadTime(cb_conn, 50);
1831 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1832 rx_PutConnection(cb_conn);
1835 /* The primary address is either not responding or
1836 * is not the client we are looking for. Need to
1837 * remove the primary address and add swap in the new
1838 * callback connection, and destroy the old one.
1840 struct rx_connection *rxconn;
1841 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
1843 afs_inet_ntoa_r(host->host, hoststr),
1844 ntohs(host->port),code2));
1847 * make sure we add and then remove. otherwise, we
1848 * might end up with no valid interfaces after the
1849 * remove and the host will have been marked deleted.
1851 addInterfaceAddr_r(host, haddr, hport);
1852 removeInterfaceAddr_r(host, host->host, host->port);
1855 rxconn = host->callback_rxcon;
1856 host->callback_rxcon = cb_in;
1861 * If rx_DestroyConnection calls h_FreeConnection we
1862 * will deadlock on the host_glock_mutex. Work around
1863 * the problem by unhooking the client from the
1864 * connection before destroying the connection.
1866 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
1867 rx_DestroyConnection(rxconn);
1873 /* A callback to the incoming connection address is failing.
1874 * Assume that the addr/port is no longer associated with the host
1875 * returned by h_Lookup_r.
1878 ("CB: WhoAreYou failed for connection (%s:%d) , error %d\n",
1879 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport), code));
1880 removeAddress_r(host, haddr, hport);
1881 host->hostFlags &= ~HWHO_INPROGRESS;
1882 host->hostFlags |= ALTADDR;
1886 rx_DestroyConnection(cb_in);
1891 ("CB: WhoAreYou failed for host %" AFS_PTR_FMT " (%s:%d), error %d\n",
1892 host, afs_inet_ntoa_r(host->host, hoststr),
1893 ntohs(host->port), code));
1894 host->hostFlags |= VENUSDOWN;
1897 if (caps.Capabilities_val
1898 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1899 host->hostFlags |= HERRORTRANS;
1901 host->hostFlags &= ~(HERRORTRANS);
1902 host->hostFlags |= ALTADDR;
1903 host->hostFlags &= ~HWHO_INPROGRESS;
1906 if (!(host->hostFlags & ALTADDR)) {
1907 /* another thread is doing the initialisation */
1909 ("Host %" AFS_PTR_FMT " (%s:%d) waiting for host-init to complete\n",
1910 host, afs_inet_ntoa_r(host->host, hoststr),
1911 ntohs(host->port)));
1915 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1916 host, afs_inet_ntoa_r(host->host, hoststr),
1917 ntohs(host->port)));
1921 /* We need to check whether the identity in the host structure
1922 * matches the identity on the connection. If they don't match
1923 * then treat this a new host. */
1924 if (!(host->Console & 1)
1925 && ((!identP->valid && host->interface)
1926 || (identP->valid && !host->interface)
1928 && !afs_uuid_equal(&identP->uuid,
1929 &host->interface->uuid)))) {
1930 char uuid1[128], uuid2[128];
1932 afsUUID_to_string(&identP->uuid, uuid1, 127);
1933 if (host->interface)
1934 afsUUID_to_string(&host->interface->uuid, uuid2, 127);
1936 ("CB: new identity for host %p (%s:%d), "
1937 "deleting(%x %p %s %s)\n",
1938 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1939 identP->valid, host->interface,
1940 identP->valid ? uuid1 : "no_uuid",
1941 host->interface ? uuid2 : "no_uuid"));
1943 /* The host in the cache is not the host for this connection */
1945 host->hostFlags |= HOSTDELETED;
1951 host = h_Alloc_r(tcon); /* returned held and locked */
1952 h_gethostcps_r(host, FT_ApproxTime());
1953 if (!(host->Console & 1)) {
1955 cb_conn = host->callback_rxcon;
1956 rx_GetConnection(cb_conn);
1957 host->hostFlags |= HWHO_INPROGRESS;
1960 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1961 if (code == RXGEN_OPCODE)
1962 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1963 rx_PutConnection(cb_conn);
1966 if ((code == RXGEN_OPCODE) ||
1967 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1970 (struct Identity *)malloc(sizeof(struct Identity));
1975 ViceLogThenPanic(0, ("Failed malloc in h_GetHost_r\n"));
1979 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1981 ("Host %" AFS_PTR_FMT " (%s:%d) does not support WhoAreYou.\n",
1982 host, afs_inet_ntoa_r(host->host, hoststr),
1983 ntohs(host->port)));
1985 } else if (code == 0) {
1988 (struct Identity *)malloc(sizeof(struct Identity));
1993 ViceLogThenPanic(0, ("Failed malloc in h_GetHost_r\n"));
1997 identP->uuid = interf.uuid;
1999 rx_SetSpecific(tcon, rxcon_ident_key, identP);
2001 ("WhoAreYou success on host %" AFS_PTR_FMT " (%s:%d)\n",
2002 host, afs_inet_ntoa_r(host->host, hoststr),
2003 ntohs(host->port)));
2005 if (code == 0 && !identP->valid) {
2006 cb_conn = host->callback_rxcon;
2007 rx_GetConnection(cb_conn);
2009 code = RXAFSCB_InitCallBackState(cb_conn);
2010 rx_PutConnection(cb_conn);
2013 } else if (code == 0) {
2014 oldHost = h_LookupUuid_r(&identP->uuid);
2019 if (oldHost->hostFlags & HOSTDELETED) {
2020 h_Unlock_r(oldHost);
2021 h_Release_r(oldHost);
2029 oldHost->hostFlags |= HWHO_INPROGRESS;
2031 if (oldHost->interface) {
2033 afsUUID uuid = oldHost->interface->uuid;
2034 cb_conn = oldHost->callback_rxcon;
2035 rx_GetConnection(cb_conn);
2036 rx_SetConnDeadTime(cb_conn, 2);
2037 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
2039 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
2041 rx_SetConnDeadTime(cb_conn, 50);
2042 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
2043 rx_PutConnection(cb_conn);
2046 /* The primary address is either not responding or
2047 * is not the client we are looking for.
2048 * MultiProbeAlternateAddress_r() will remove the
2049 * alternate interfaces that do not have the same
2051 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
2053 afs_inet_ntoa_r(oldHost->host, hoststr),
2054 ntohs(oldHost->port),code2));
2055 MultiProbeAlternateAddress_r(oldHost);
2062 /* This is a new address for an existing host. Update
2063 * the list of interfaces for the existing host and
2064 * delete the host structure we just allocated. */
2066 /* prevent warnings while manipulating interface lists */
2067 host->hostFlags |= HOSTDELETED;
2069 if (oldHost->host != haddr || oldHost->port != hport) {
2070 struct rx_connection *rxconn;
2073 ("CB: Host %" AFS_PTR_FMT " (%s:%d) has new addr %s:%d\n",
2075 afs_inet_ntoa_r(oldHost->host, hoststr2),
2076 ntohs(oldHost->port),
2077 afs_inet_ntoa_r(haddr, hoststr),
2080 * add then remove. otherwise the host may get marked
2081 * deleted if we removed the only valid address.
2083 addInterfaceAddr_r(oldHost, haddr, hport);
2084 if (probefail || oldHost->host == haddr) {
2086 * The probe failed which means that the old
2087 * address is either unreachable or is not the
2088 * same host we were just contacted by. We will
2089 * also remove addresses if only the port has
2090 * changed because that indicates the client
2093 removeInterfaceAddr_r(oldHost, oldHost->host, oldHost->port);
2096 struct Interface *interface = oldHost->interface;
2097 int number = oldHost->interface->numberOfInterfaces;
2098 for (i = 0; i < number; i++) {
2099 if (interface->interface[i].addr == haddr &&
2100 interface->interface[i].port != hport) {
2102 * We have just been contacted by a client
2103 * that has been seen from behind a NAT
2104 * and at least one other address.
2106 removeInterfaceAddr_r(oldHost, haddr,
2107 interface->interface[i].port);
2112 h_AddHostToAddrHashTable_r(haddr, hport, oldHost);
2113 oldHost->host = haddr;
2114 oldHost->port = hport;
2115 rxconn = oldHost->callback_rxcon;
2116 oldHost->callback_rxcon = host->callback_rxcon;
2117 host->callback_rxcon = rxconn;
2119 /* don't destroy rxconn here; let h_TossStuff_r
2120 * take care of that via h_Release_r below */
2122 host->hostFlags &= ~HWHO_INPROGRESS;
2124 /* release host because it was allocated by h_Alloc_r */
2127 /* the new host is held and locked */
2129 /* This really is a new host */
2130 h_AddHostToUuidHashTable_r(&identP->uuid, host);
2131 cb_conn = host->callback_rxcon;
2132 rx_GetConnection(cb_conn);
2135 RXAFSCB_InitCallBackState3(cb_conn,
2137 rx_PutConnection(cb_conn);
2142 ("InitCallBackState3 success on host %" AFS_PTR_FMT " (%s:%d)\n",
2143 host, afs_inet_ntoa_r(host->host, hoststr),
2144 ntohs(host->port)));
2145 osi_Assert(interfValid == 1);
2146 initInterfaceAddr_r(host, &interf);
2152 ("CB: RCallBackConnectBack failed for %" AFS_PTR_FMT " (%s:%d)\n",
2153 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
2154 host->hostFlags |= VENUSDOWN;
2157 ("CB: RCallBackConnectBack succeeded for %" AFS_PTR_FMT " (%s:%d)\n",
2158 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
2159 host->hostFlags |= RESETDONE;
2162 if (caps.Capabilities_val
2163 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
2164 host->hostFlags |= HERRORTRANS;
2166 host->hostFlags &= ~(HERRORTRANS);
2167 host->hostFlags |= ALTADDR; /* host structure initialization complete */
2168 host->hostFlags &= ~HWHO_INPROGRESS;
2173 if (caps.Capabilities_val)
2174 free(caps.Capabilities_val);
2175 caps.Capabilities_val = NULL;
2176 caps.Capabilities_len = 0;
2178 rx_DestroyConnection(cb_in);
2186 static char localcellname[PR_MAXNAMELEN + 1];
2187 char local_realms[AFS_NUM_LREALMS][AFS_REALM_SZ];
2188 int num_lrealms = -1;
2192 h_InitHostPackage(void)
2194 memset(&nulluuid, 0, sizeof(afsUUID));
2195 afsconf_GetLocalCell(confDir, localcellname, PR_MAXNAMELEN);
2196 if (num_lrealms == -1) {
2198 for (i=0; i<AFS_NUM_LREALMS; i++) {
2199 if (afs_krb_get_lrealm(local_realms[i], i) != 0 /*KSUCCESS*/)
2205 ("afs_krb_get_lrealm failed, using %s.\n",
2207 strncpy(local_realms[0], localcellname, AFS_REALM_SZ);
2213 /* initialize the rest of the local realms to nullstring for debugging */
2214 for (; i<AFS_NUM_LREALMS; i++)
2215 local_realms[i][0] = '\0';
2217 rxcon_ident_key = rx_KeyCreate((rx_destructor_t) free);
2218 rxcon_client_key = rx_KeyCreate((rx_destructor_t) 0);
2219 MUTEX_INIT(&host_glock_mutex, "host glock", MUTEX_DEFAULT, 0);
2223 MapName_r(char *aname, char *acell, afs_int32 * aval)
2228 afs_int32 anamelen, cnamelen;
2232 anamelen = strlen(aname);
2233 if (anamelen >= PR_MAXNAMELEN)
2234 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
2236 lnames.namelist_len = 1;
2237 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
2238 lids.idlist_len = 0;
2239 lids.idlist_val = NULL;
2241 cnamelen = strlen(acell);
2243 if (afs_is_foreign_ticket_name(aname, NULL, acell, localcellname)) {
2245 ("MapName: cell is foreign. cell=%s, localcell=%s, localrealms={%s,%s,%s,%s}\n",
2246 acell, localcellname, local_realms[0],local_realms[1],local_realms[2],local_realms[3]));
2247 if ((anamelen + cnamelen + 1) >= PR_MAXNAMELEN) {
2249 ("MapName: Name too long, using AnonymousID for %s@%s\n",
2251 *aval = AnonymousID;
2254 foreign = 1; /* attempt cross-cell authentication */
2255 tname = (char *)malloc(PR_MAXNAMELEN);
2257 ViceLogThenPanic(0, ("Failed malloc in MapName_r\n"));
2259 strcpy(tname, aname);
2260 tname[anamelen] = '@';
2261 strcpy(tname + anamelen + 1, acell);
2262 lnames.namelist_val = (prname *) tname;
2267 code = hpr_NameToId(&lnames, &lids);
2270 if (lids.idlist_val) {
2271 *aval = lids.idlist_val[0];
2272 if (*aval == AnonymousID) {
2274 ("MapName: NameToId on %s returns anonymousID\n",
2275 lnames.namelist_val[0]));
2277 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
2280 ("MapName: NameToId on '%s' is unknown\n",
2281 lnames.namelist_val[0]));
2287 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
2295 /* NOTE: this returns the client with a Write lock and a refCount */
2297 h_ID2Client(afs_int32 vid)
2299 struct client *client;
2304 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
2305 if (host->hostFlags & HOSTDELETED)
2307 for (client = host->FirstClient; client; client = client->next) {
2308 if (!client->deleted && client->ViceId == vid) {
2311 ObtainWriteLock(&client->lock);
2316 if (count != hostCount) {
2317 ViceLog(0, ("h_ID2Client found %d of %d hosts\n", count, hostCount));
2318 } else if (host != NULL) {
2319 ViceLog(0, ("h_ID2Client found more than %d hosts\n", hostCount));
2320 ShutDownAndCore(PANIC);
2328 * Called by the server main loop. Returns a h_Held client, which must be
2329 * released later the main loop. Allocates a client if the matching one
2330 * isn't around. The client is returned with its reference count incremented
2331 * by one. The caller must call h_ReleaseClient_r when finished with
2334 * The refCount on client->host is returned incremented. h_ReleaseClient_r
2335 * does not decrement the refCount on client->host.
2338 h_FindClient_r(struct rx_connection *tcon)
2340 struct client *client;
2341 struct host *host = NULL;
2342 struct client *oldClient;
2343 afs_int32 viceid = 0;
2347 #if (64-MAXKTCNAMELEN)
2348 ticket name length != 64
2352 char uname[PR_MAXNAMELEN];
2353 char tcell[MAXKTCREALMLEN];
2357 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2358 if (client && client->sid == rxr_CidOf(tcon)
2359 && client->VenusEpoch == rxr_GetEpoch(tcon)
2360 && !(client->host->hostFlags & HOSTDELETED)
2361 && !client->deleted) {
2364 h_Hold_r(client->host);
2365 if (client->prfail != 2) {
2366 /* Could add shared lock on client here */
2367 /* note that we don't have to lock entry in this path to
2368 * ensure CPS is initialized, since we don't call rx_SetSpecific
2369 * until initialization is done, and we only get here if
2370 * rx_GetSpecific located the client structure.
2375 ObtainWriteLock(&client->lock); /* released at end */
2381 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
2383 ("FindClient: authenticating connection: authClass=%d\n",
2385 if (authClass == 1) {
2386 /* A bcrypt tickets, no longer supported */
2387 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
2388 viceid = AnonymousID;
2389 expTime = 0x7fffffff;
2390 } else if (authClass == 2) {
2393 /* kerberos ticket */
2394 code = rxkad_GetServerInfo(tcon, /*level */ 0, (afs_uint32 *)&expTime,
2395 tname, tinst, tcell, &kvno);
2397 ViceLog(1, ("Failed to get rxkad ticket info\n"));
2398 viceid = AnonymousID;
2399 expTime = 0x7fffffff;
2401 int ilen = strlen(tinst);
2403 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
2404 tname, tinst, tcell, expTime, kvno));
2405 strncpy(uname, tname, sizeof(uname));
2407 if (strlen(uname) + 1 + ilen >= sizeof(uname))
2410 strcat(uname, tinst);
2412 /* translate the name to a vice id */
2413 code = MapName_r(uname, tcell, &viceid);
2417 ("failed to map name=%s, cell=%s -> code=%d\n", uname,
2420 viceid = AnonymousID;
2421 expTime = 0x7fffffff;
2425 viceid = AnonymousID; /* unknown security class */
2426 expTime = 0x7fffffff;
2429 if (!client) { /* loop */
2430 host = h_GetHost_r(tcon); /* Returns with incremented refCount */
2436 /* First try to find the client structure */
2437 for (client = host->FirstClient; client; client = client->next) {
2438 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2439 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2442 ObtainWriteLock(&client->lock);
2448 /* Still no client structure - get one */
2451 if (host->hostFlags & HOSTDELETED) {
2456 /* Retry to find the client structure */
2457 for (client = host->FirstClient; client; client = client->next) {
2458 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2459 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2461 goto retryfirstclient;
2466 ObtainWriteLock(&client->lock);
2467 client->refCount = 1;
2468 client->host = host;
2469 #if FS_STATS_DETAILED
2470 client->InSameNetwork = host->InSameNetwork;
2471 #endif /* FS_STATS_DETAILED */
2472 client->ViceId = viceid;
2473 client->expTime = expTime; /* rx only */
2474 client->authClass = authClass; /* rx only */
2475 client->sid = rxr_CidOf(tcon);
2476 client->VenusEpoch = rxr_GetEpoch(tcon);
2477 client->CPS.prlist_val = NULL;
2478 client->CPS.prlist_len = 0;
2482 client->prfail = fail;
2484 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
2485 client->CPS.prlist_len = 0;
2486 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID))
2487 free(client->CPS.prlist_val);
2488 client->CPS.prlist_val = NULL;
2489 client->ViceId = viceid;
2490 client->expTime = expTime;
2492 if (viceid == ANONYMOUSID) {
2493 client->CPS.prlist_len = AnonCPS.prlist_len;
2494 client->CPS.prlist_val = AnonCPS.prlist_val;
2497 code = hpr_GetCPS(viceid, &client->CPS);
2502 ("pr_GetCPS failed(%d) for user %d, host %" AFS_PTR_FMT " (%s:%d)\n",
2503 code, viceid, client->host,
2504 afs_inet_ntoa_r(client->host->host,hoststr),
2505 ntohs(client->host->port)));
2507 /* Although ubik_Call (called by pr_GetCPS) traverses thru
2508 * all protection servers and reevaluates things if no
2509 * sync server or quorum is found we could still end up
2510 * with one of these errors. In such case we would like to
2511 * reevaluate the rpc call to find if there's cps for this
2512 * guy. We treat other errors (except network failures
2513 * ones - i.e. code < 0) as an indication that there is no
2514 * CPS for this host. Ideally we could like to deal this
2515 * problem the other way around (i.e. if code == NOCPS
2516 * ignore else retry next time) but the problem is that
2517 * there're other errors (i.e. EPERM) for which we don't
2518 * want to retry and we don't know the whole code list!
2520 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
2524 /* the disabling of system:administrators is so iffy and has so many
2525 * possible failure modes that we will disable it again */
2526 /* Turn off System:Administrator for safety
2527 * if (AL_IsAMember(SystemId, client->CPS) == 0)
2528 * osi_Assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
2531 /* Now, tcon may already be set to a rock, since we blocked with no host
2532 * or client locks set above in pr_GetCPS (XXXX some locking is probably
2533 * required). So, before setting the RPC's rock, we should disconnect
2534 * the RPC from the other client structure's rock.
2536 oldClient = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2537 if (oldClient && oldClient != client && oldClient->sid == rxr_CidOf(tcon)
2538 && oldClient->VenusEpoch == rxr_GetEpoch(tcon)) {
2540 if (!oldClient->deleted) {
2541 /* if we didn't create it, it's not ours to put back */
2543 ViceLog(0, ("FindClient: stillborn client %p(%x); "
2544 "conn %p (host %s:%d) had client %p(%x)\n",
2545 client, client->sid, tcon,
2546 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2547 ntohs(rxr_PortOf(tcon)),
2548 oldClient, oldClient->sid));
2549 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2550 free(client->CPS.prlist_val);
2551 client->CPS.prlist_val = NULL;
2552 client->CPS.prlist_len = 0;
2554 /* We should perhaps check for 0 here */
2556 ReleaseWriteLock(&client->lock);
2561 oldClient->refCount++;
2563 h_Hold_r(oldClient->host);
2564 h_Release_r(client->host);
2567 ObtainWriteLock(&oldClient->lock);
2570 host = oldClient->host;
2572 ViceLog(0, ("FindClient: deleted client %p(%x ref %d host %p href "
2573 "%d) already had conn %p (host %s:%d, cid %x), stolen "
2574 "by client %p(%x, ref %d host %p href %d)\n",
2575 oldClient, oldClient->sid, oldClient->refCount,
2576 oldClient->host, oldClient->host->refCount, tcon,
2577 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2578 ntohs(rxr_PortOf(tcon)), rxr_CidOf(tcon),
2579 client, client->sid, client->refCount,
2580 client->host, client->host->refCount));
2581 /* rx_SetSpecific will be done immediately below */
2584 /* Avoid chaining in more than once. */
2588 if (host->hostFlags & HOSTDELETED) {
2593 client->host = NULL;
2595 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2596 free(client->CPS.prlist_val);
2597 client->CPS.prlist_val = NULL;
2598 client->CPS.prlist_len = 0;
2601 ReleaseWriteLock(&client->lock);
2606 client->next = host->FirstClient;
2607 host->FirstClient = client;
2609 CurrentConnections++; /* increment number of connections */
2611 rx_SetSpecific(tcon, rxcon_client_key, client);
2612 ReleaseWriteLock(&client->lock);
2616 } /*h_FindClient_r */
2619 h_ReleaseClient_r(struct client *client)
2621 osi_Assert(client->refCount > 0);
2628 * Sigh: this one is used to get the client AGAIN within the individual
2629 * server routines. This does not bother h_Holding the host, since
2630 * this is assumed already have been done by the server main loop.
2631 * It does check tokens, since only the server routines can return the
2632 * VICETOKENDEAD error code
2635 GetClient(struct rx_connection *tcon, struct client **cp)
2637 struct client *client;
2642 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2643 if (client == NULL) {
2645 ("GetClient: no client in conn %p (host %s:%d), VBUSYING\n",
2646 tcon, afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2647 ntohs(rxr_PortOf(tcon))));
2651 if (rxr_CidOf(tcon) != client->sid || rxr_GetEpoch(tcon) != client->VenusEpoch) {
2653 ("GetClient: tcon %p tcon sid %d client sid %d\n",
2654 tcon, rxr_CidOf(tcon), client->sid));
2658 if (client && client->LastCall > client->expTime && client->expTime) {
2660 ("Token for %s at %s:%d expired %d\n", h_UserName(client),
2661 afs_inet_ntoa_r(client->host->host, hoststr),
2662 ntohs(client->host->port), client->expTime));
2664 return VICETOKENDEAD;
2666 if (client->deleted) {
2667 ViceLog(0, ("GetClient: got deleted client, connection will appear "
2668 "anonymous; tcon %p cid %x client %p ref %d host %p "
2669 "(%s:%d) href %d ViceId %d\n",
2670 tcon, rxr_CidOf(tcon), client, client->refCount,
2672 afs_inet_ntoa_r(client->host->host, hoststr),
2673 (int)ntohs(client->host->port), client->host->refCount,
2674 (int)client->ViceId));
2684 PutClient(struct client **cp)
2690 h_ReleaseClient_r(*cp);
2697 /* Client user name for short term use. Note that this is NOT inexpensive */
2699 h_UserName(struct client *client)
2701 static char User[PR_MAXNAMELEN + 1];
2705 lids.idlist_len = 1;
2706 lids.idlist_val = (afs_int32 *) malloc(1 * sizeof(afs_int32));
2707 if (!lids.idlist_val) {
2708 ViceLogThenPanic(0, ("Failed malloc in h_UserName\n"));
2710 lnames.namelist_len = 0;
2711 lnames.namelist_val = (prname *) 0;
2712 lids.idlist_val[0] = client->ViceId;
2713 if (hpr_IdToName(&lids, &lnames)) {
2714 /* We need to free id we alloced above! */
2715 free(lids.idlist_val);
2716 return "*UNKNOWN USER NAME*";
2718 strncpy(User, lnames.namelist_val[0], PR_MAXNAMELEN);
2719 free(lids.idlist_val);
2720 free(lnames.namelist_val);
2729 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
2730 CEs, CEBlocks, HTs, HTBlocks));
2736 h_PrintClient(struct host *host, void *rock)
2738 StreamHandle_t *file = (StreamHandle_t *)rock;
2739 struct client *client;
2744 time_t LastCall, expTime;
2748 LastCall = host->LastCall;
2749 if (host->hostFlags & HOSTDELETED) {
2753 strftime(tbuffer, sizeof(tbuffer), "%a %b %d %T %Y",
2754 localtime_r(&LastCall, &tm));
2755 snprintf(tmpStr, sizeof tmpStr, "Host %s:%d down = %d, LastCall %s\n",
2756 afs_inet_ntoa_r(host->host, hoststr),
2757 ntohs(host->port), (host->hostFlags & VENUSDOWN),
2759 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2760 for (client = host->FirstClient; client; client = client->next) {
2761 if (!client->deleted) {
2762 expTime = client->expTime;
2763 strftime(tbuffer, sizeof(tbuffer), "%a %b %d %T %Y",
2764 localtime_r(&expTime, &tm));
2765 snprintf(tmpStr, sizeof tmpStr,
2766 " user id=%d, name=%s, sl=%s till %s\n",
2767 client->ViceId, h_UserName(client),
2768 client->authClass ? "Authenticated"
2769 : "Not authenticated",
2770 client->authClass ? tbuffer : "No Limit");
2771 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2772 snprintf(tmpStr, sizeof tmpStr, " CPS-%d is [",
2773 client->CPS.prlist_len);
2774 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2775 if (client->CPS.prlist_val) {
2776 for (i = 0; i < client->CPS.prlist_len; i++) {
2777 snprintf(tmpStr, sizeof tmpStr, " %d",
2778 client->CPS.prlist_val[i]);
2779 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2782 sprintf(tmpStr, "]\n");
2783 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2789 } /*h_PrintClient */
2794 * Print a list of clients, with last security level and token value seen,
2798 h_PrintClients(void)
2805 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
2809 ("Couldn't create client dump file %s\n",
2810 AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2813 now = FT_ApproxTime();
2814 strftime(tbuffer, sizeof(tbuffer), "%a %b %d %T %Y",
2815 localtime_r(&now, &tm));
2816 snprintf(tmpStr, sizeof tmpStr, "List of active users at %s\n\n",
2818 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2819 h_Enumerate(h_PrintClient, (char *)file);
2820 STREAM_REALLYCLOSE(file);
2821 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2828 h_DumpHost(struct host *host, void *rock)
2830 StreamHandle_t *file = (StreamHandle_t *)rock;
2837 snprintf(tmpStr, sizeof tmpStr,
2838 "ip:%s port:%d hidx:%d cbid:%d lock:%x last:%u active:%u "
2839 "down:%d del:%d cons:%d cldel:%d\n\t hpfailed:%d hcpsCall:%u "
2841 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
2842 host->index, host->cblist, CheckLock(&host->lock),
2843 host->LastCall, host->ActiveCall, (host->hostFlags & VENUSDOWN),
2844 host->hostFlags & HOSTDELETED, host->Console,
2845 host->hostFlags & CLIENTDELETED, host->hcpsfailed,
2847 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2848 if (host->hcps.prlist_val)
2849 for (i = 0; i < host->hcps.prlist_len; i++) {
2850 snprintf(tmpStr, sizeof tmpStr, " %d", host->hcps.prlist_val[i]);
2851 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2853 sprintf(tmpStr, "] [");
2854 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2855 if (host->interface)
2856 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
2858 sprintf(tmpStr, " %s:%d",
2859 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
2860 ntohs(host->interface->interface[i].port));
2861 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2863 sprintf(tmpStr, "] refCount:%d hostFlags:%hu\n", host->refCount, host->hostFlags);
2864 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2876 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
2883 ("Couldn't create host dump file %s\n",
2884 AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2887 now = FT_ApproxTime();
2888 strftime(tbuffer, sizeof(tbuffer), "%a %b %d %T %Y",
2889 localtime_r(&now, &tm));
2890 snprintf(tmpStr, sizeof tmpStr, "List of active hosts at %s\n\n", tbuffer);
2891 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2892 h_Enumerate(h_DumpHost, (char *)file);
2893 STREAM_REALLYCLOSE(file);
2894 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2898 #ifdef AFS_DEMAND_ATTACH_FS
2901 * host state serialization
2903 static int h_stateFillHeader(struct host_state_header * hdr);
2904 static int h_stateCheckHeader(struct host_state_header * hdr);
2905 static int h_stateAllocMap(struct fs_dump_state * state);
2906 static int h_stateSaveHost(struct host * host, void *rock);
2907 static int h_stateRestoreHost(struct fs_dump_state * state);
2908 static int h_stateRestoreIndex(struct host * h, void *rock);
2909 static int h_stateVerifyHost(struct host * h, void *rock);
2910 static int h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h,
2911 afs_uint32 addr, afs_uint16 port, int valid);
2912 static int h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h);
2913 static void h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out);
2914 static void h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out);
2917 /* this procedure saves all host state to disk for fast startup */
2919 h_stateSave(struct fs_dump_state * state)
2921 AssignInt64(state->eof_offset, &state->hdr->h_offset);
2924 ViceLog(0, ("h_stateSave: hostCount=%d\n", hostCount));
2926 /* invalidate host state header */
2927 memset(state->h_hdr, 0, sizeof(struct host_state_header));
2929 if (fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2930 sizeof(struct host_state_header))) {
2935 fs_stateIncEOF(state, sizeof(struct host_state_header));
2937 h_Enumerate_r(h_stateSaveHost, hostList, (char *)state);
2942 h_stateFillHeader(state->h_hdr);
2944 /* write the real header to disk */
2945 state->bail = fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2946 sizeof(struct host_state_header));
2953 * host state serialization
2955 * this procedure restores all host state from a disk for fast startup
2958 h_stateRestore(struct fs_dump_state * state)
2962 /* seek to the right position and read in the host state header */
2963 if (fs_stateReadHeader(state, &state->hdr->h_offset, state->h_hdr,
2964 sizeof(struct host_state_header))) {
2969 /* check the validity of the header */
2970 if (h_stateCheckHeader(state->h_hdr)) {
2975 records = state->h_hdr->records;
2977 if (h_stateAllocMap(state)) {
2982 /* iterate over records restoring host state */
2983 for (i=0; i < records; i++) {
2984 if (h_stateRestoreHost(state) != 0) {
2995 h_stateRestoreIndices(struct fs_dump_state * state)
2997 h_Enumerate_r(h_stateRestoreIndex, hostList, (char *)state);
3002 h_stateRestoreIndex(struct host * h, void *rock)
3004 struct fs_dump_state *state = (struct fs_dump_state *)rock;
3005 if (cb_OldToNew(state, h->cblist, &h->cblist)) {
3006 return H_ENUMERATE_BAIL(0);
3012 h_stateVerify(struct fs_dump_state * state)
3014 h_Enumerate_r(h_stateVerifyHost, hostList, (char *)state);
3019 h_stateVerifyHost(struct host * h, void* rock)
3021 struct fs_dump_state *state = (struct fs_dump_state *)rock;
3025 ViceLog(0, ("h_stateVerifyHost: error: NULL host pointer in linked list\n"));
3026 return H_ENUMERATE_BAIL(0);
3030 for (i = h->interface->numberOfInterfaces-1; i >= 0; i--) {
3031 if (h_stateVerifyAddrHash(state, h, h->interface->interface[i].addr,
3032 h->interface->interface[i].port,
3033 h->interface->interface[i].valid)) {
3037 if (h_stateVerifyUuidHash(state, h)) {
3040 } else if (h_stateVerifyAddrHash(state, h, h->host, h->port, 1)) {
3044 if (cb_stateVerifyHCBList(state, h)) {
3052 * verify a host is either in, or absent from, the addr hash table.
3054 * @param[in] state fs dump state
3055 * @param[in] h host we're dealing with
3056 * @param[in] addr addr to look for (NBO)
3057 * @param[in] port port to look for (NBO)
3058 * @param[in] valid 1 if we're verifying that the specified addr and port
3059 * in the hash table point to the specified host. 0 if we're
3060 * verifying that the specified addr and port do NOT point
3061 * to the specified host
3063 * @return operation status
3064 * @retval 1 failed to verify, bail out
3065 * @retval 0 verified successfully, all is well
3068 h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h,
3069 afs_uint32 addr, afs_uint16 port, int valid)
3071 int ret = 0, found = 0;
3072 struct host *host = NULL;
3073 struct h_AddrHashChain *chain;
3074 int index = h_HashIndex(addr);
3078 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
3079 host = chain->hostPtr;
3081 afs_inet_ntoa_r(addr, tmp);
3082 ViceLog(0, ("h_stateVerifyAddrHash: error: addr hash chain has NULL host ptr (lookup addr %s)\n", tmp));
3086 if ((chain->addr == addr) && (chain->port == port)) {
3089 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr hash entry "
3090 "points to different host struct (%d, %d)\n",
3091 h->index, host->index));
3092 state->flags.warnings_generated = 1;
3096 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s:%u is "
3097 "marked invalid, but points to the containing "
3098 "host\n", afs_inet_ntoa_r(addr, tmp),
3099 (unsigned)htons(port)));
3107 if (chain_len > FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN) {
3108 ViceLog(0, ("h_stateVerifyAddrHash: error: hash chain length exceeds %d; assuming there's a loop\n",
3109 FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN));
3116 if (!found && valid) {
3117 afs_inet_ntoa_r(addr, tmp);
3118 if (state->mode == FS_STATE_LOAD_MODE) {
3119 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s:%u not found in hash\n",
3120 tmp, (unsigned)htons(port)));
3124 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr %s:%u not found in hash\n",
3125 tmp, (unsigned)htons(port)));
3126 state->flags.warnings_generated = 1;
3135 h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h)
3137 int ret = 0, found = 0;
3138 struct host *host = NULL;
3139 struct h_UuidHashChain *chain;
3140 afsUUID * uuidp = &h->interface->uuid;
3141 int index = h_UuidHashIndex(uuidp);
3145 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
3146 host = chain->hostPtr;
3148 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
3149 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid hash chain has NULL host ptr (lookup uuid %s)\n", tmp));
3153 if (host->interface &&
3154 afs_uuid_equal(&host->interface->uuid, uuidp)) {
3156 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid hash entry points to different host struct (%d, %d)\n",
3157 h->index, host->index));
3158 state->flags.warnings_generated = 1;
3163 if (chain_len > FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN) {
3164 ViceLog(0, ("h_stateVerifyUuidHash: error: hash chain length exceeds %d; assuming there's a loop\n",
3165 FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN));
3173 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
3174 if (state->mode == FS_STATE_LOAD_MODE) {
3175 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid %s not found in hash\n", tmp));
3179 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid %s not found in hash\n", tmp));
3180 state->flags.warnings_generated = 1;
3188 /* create the host state header structure */
3190 h_stateFillHeader(struct host_state_header * hdr)
3192 hdr->stamp.magic = HOST_STATE_MAGIC;
3193 hdr->stamp.version = HOST_STATE_VERSION;
3197 /* check the contents of the host state header structure */
3199 h_stateCheckHeader(struct host_state_header * hdr)
3203 if (hdr->stamp.magic != HOST_STATE_MAGIC) {
3204 ViceLog(0, ("check_host_state_header: invalid state header\n"));
3207 else if (hdr->stamp.version != HOST_STATE_VERSION) {
3208 ViceLog(0, ("check_host_state_header: unknown version number\n"));
3214 /* allocate the host id mapping table */
3216 h_stateAllocMap(struct fs_dump_state * state)
3218 state->h_map.len = state->h_hdr->index_max + 1;
3219 state->h_map.entries = (struct idx_map_entry_t *)
3220 calloc(state->h_map.len, sizeof(struct idx_map_entry_t));
3221 return (state->h_map.entries != NULL) ? 0 : 1;
3224 /* function called by h_Enumerate to save a host to disk */
3226 h_stateSaveHost(struct host * host, void* rock)
3228 struct fs_dump_state *state = (struct fs_dump_state *) rock;
3229 int if_len=0, hcps_len=0;
3230 struct hostDiskEntry hdsk;
3231 struct host_state_entry_header hdr;
3232 struct Interface * ifp = NULL;
3233 afs_int32 * hcps = NULL;
3234 struct iovec iov[4];
3237 memset(&hdr, 0, sizeof(hdr));
3239 if (state->h_hdr->index_max < host->index) {
3240 state->h_hdr->index_max = host->index;
3243 h_hostToDiskEntry_r(host, &hdsk);
3244 if (host->interface) {
3245 if_len = sizeof(struct Interface) +
3246 ((host->interface->numberOfInterfaces-1) * sizeof(struct AddrPort));
3247 ifp = (struct Interface *) malloc(if_len);
3248 osi_Assert(ifp != NULL);
3249 memcpy(ifp, host->interface, if_len);
3250 hdr.interfaces = host->interface->numberOfInterfaces;
3251 iov[iovcnt].iov_base = (char *) ifp;
3252 iov[iovcnt].iov_len = if_len;
3255 if (host->hcps.prlist_val) {
3256 hdr.hcps = host->hcps.prlist_len;
3257 hcps_len = hdr.hcps * sizeof(afs_int32);
3258 hcps = (afs_int32 *) malloc(hcps_len);
3259 osi_Assert(hcps != NULL);
3260 memcpy(hcps, host->hcps.prlist_val, hcps_len);
3261 iov[iovcnt].iov_base = (char *) hcps;
3262 iov[iovcnt].iov_len = hcps_len;
3266 if (hdsk.index > state->h_hdr->index_max)
3267 state->h_hdr->index_max = hdsk.index;
3269 hdr.len = sizeof(struct host_state_entry_header) +
3270 sizeof(struct hostDiskEntry) + if_len + hcps_len;
3271 hdr.magic = HOST_STATE_ENTRY_MAGIC;
3273 iov[0].iov_base = (char *) &hdr;
3274 iov[0].iov_len = sizeof(hdr);
3275 iov[1].iov_base = (char *) &hdsk;
3276 iov[1].iov_len = sizeof(struct hostDiskEntry);
3278 if (fs_stateWriteV(state, iov, iovcnt)) {
3279 ViceLog(0, ("h_stateSaveHost: failed to save host %d", host->index));
3283 fs_stateIncEOF(state, hdr.len);
3285 state->h_hdr->records++;
3292 return H_ENUMERATE_BAIL(0);
3297 /* restores a host from disk */
3299 h_stateRestoreHost(struct fs_dump_state * state)
3301 int ifp_len=0, hcps_len=0, bail=0;
3302 struct host_state_entry_header hdr;
3303 struct hostDiskEntry hdsk;
3304 struct host *host = NULL;
3305 struct Interface *ifp = NULL;
3306 afs_int32 * hcps = NULL;
3307 struct iovec iov[3];
3310 if (fs_stateRead(state, &hdr, sizeof(hdr))) {
3311 ViceLog(0, ("h_stateRestoreHost: failed to read host entry header from dump file '%s'\n",
3317 if (hdr.magic != HOST_STATE_ENTRY_MAGIC) {
3318 ViceLog(0, ("h_stateRestoreHost: fileserver state dump file '%s' is corrupt.\n",
3324 iov[0].iov_base = (char *) &hdsk;
3325 iov[0].iov_len = sizeof(struct hostDiskEntry);
3327 if (hdr.interfaces) {
3328 ifp_len = sizeof(struct Interface) +
3329 ((hdr.interfaces-1) * sizeof(struct AddrPort));
3330 ifp = (struct Interface *) malloc(ifp_len);
3331 osi_Assert(ifp != NULL);
3332 iov[iovcnt].iov_base = (char *) ifp;
3333 iov[iovcnt].iov_len = ifp_len;
3337 hcps_len = hdr.hcps * sizeof(afs_int32);
3338 hcps = (afs_int32 *) malloc(hcps_len);
3339 osi_Assert(hcps != NULL);
3340 iov[iovcnt].iov_base = (char *) hcps;
3341 iov[iovcnt].iov_len = hcps_len;
3345 if ((ifp_len + hcps_len + sizeof(hdsk) + sizeof(hdr)) != hdr.len) {
3346 ViceLog(0, ("h_stateRestoreHost: host entry header length fields are inconsistent\n"));
3351 if (fs_stateReadV(state, iov, iovcnt)) {
3352 ViceLog(0, ("h_stateRestoreHost: failed to read host entry\n"));
3357 if (!hdr.hcps && hdsk.hcps_valid) {
3358 /* valid, zero-length host cps ; does this ever happen? */
3359 hcps = (afs_int32 *) malloc(sizeof(afs_int32));
3360 osi_Assert(hcps != NULL);
3364 osi_Assert(host != NULL);
3367 host->interface = ifp;
3370 host->hcps.prlist_val = hcps;
3371 host->hcps.prlist_len = hdr.hcps;
3374 h_diskEntryToHost_r(&hdsk, host);
3375 h_SetupCallbackConn_r(host);
3377 h_AddHostToAddrHashTable_r(host->host, host->port, host);
3380 for (i = ifp->numberOfInterfaces-1; i >= 0; i--) {
3381 if (ifp->interface[i].valid &&
3382 !(ifp->interface[i].addr == host->host &&
3383 ifp->interface[i].port == host->port)) {
3384 h_AddHostToAddrHashTable_r(ifp->interface[i].addr,
3385 ifp->interface[i].port,
3389 h_AddHostToUuidHashTable_r(&ifp->uuid, host);
3391 h_InsertList_r(host);
3393 /* setup host id map entry */
3394 state->h_map.entries[hdsk.index].old_idx = hdsk.index;
3395 state->h_map.entries[hdsk.index].new_idx = host->index;
3407 /* serialize a host structure to disk */
3409 h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out)
3411 out->host = in->host;
3412 out->port = in->port;
3413 out->hostFlags = in->hostFlags;
3414 out->Console = in->Console;
3415 out->hcpsfailed = in->hcpsfailed;
3416 out->LastCall = in->LastCall;
3417 out->ActiveCall = in->ActiveCall;
3418 out->cpsCall = in->cpsCall;
3419 out->cblist = in->cblist;
3420 #ifdef FS_STATS_DETAILED
3421 out->InSameNetwork = in->InSameNetwork;
3424 /* special fields we save, but are not memcpy'd back on restore */
3425 out->index = in->index;
3426 out->hcps_len = in->hcps.prlist_len;
3427 out->hcps_valid = (in->hcps.prlist_val == NULL) ? 0 : 1;
3430 /* restore a host structure from disk */
3432 h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out)
3434 out->host = in->host;
3435 out->port = in->port;
3436 out->hostFlags = in->hostFlags;
3437 out->Console = in->Console;
3438 out->hcpsfailed = in->hcpsfailed;
3439 out->LastCall = in->LastCall;
3440 out->ActiveCall = in->ActiveCall;
3441 out->cpsCall = in->cpsCall;
3442 out->cblist = in->cblist;
3443 #ifdef FS_STATS_DETAILED
3444 out->InSameNetwork = in->InSameNetwork;
3448 /* index translation routines */
3450 h_OldToNew(struct fs_dump_state * state, afs_uint32 old, afs_uint32 * new)
3454 /* hosts use a zero-based index, so old==0 is valid */
3456 if (old >= state->h_map.len) {
3457 ViceLog(0, ("h_OldToNew: index %d is out of range\n", old));
3459 } else if (state->h_map.entries[old].old_idx != old) { /* sanity check */
3460 ViceLog(0, ("h_OldToNew: index %d points to an invalid host record\n", old));
3463 *new = state->h_map.entries[old].new_idx;
3468 #endif /* AFS_DEMAND_ATTACH_FS */
3472 * This counts the number of workstations, the number of active workstations,
3473 * and the number of workstations declared "down" (i.e. not heard from
3474 * recently). An active workstation has received a call since the cutoff
3475 * time argument passed.
3478 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
3481 int num = 0, active = 0, del = 0;
3485 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
3486 if (!(host->hostFlags & HOSTDELETED)) {
3488 if (host->ActiveCall > cutofftime)
3490 if (host->hostFlags & VENUSDOWN)
3494 if (count != hostCount) {
3495 ViceLog(0, ("h_GetWorkStats found %d of %d hosts\n", count, hostCount));
3496 } else if (host != NULL) {
3497 ViceLog(0, ("h_GetWorkStats found more than %d hosts\n", hostCount));
3498 ShutDownAndCore(PANIC);
3508 } /*h_GetWorkStats */
3511 h_GetWorkStats64(afs_uint64 *nump, afs_uint64 *activep, afs_uint64 *delp,
3512 afs_int32 cutofftime)
3514 int num, active, del;
3515 h_GetWorkStats(&num, &active, &del, cutofftime);
3524 /*------------------------------------------------------------------------
3525 * PRIVATE h_ClassifyAddress
3528 * Given a target IP address and a candidate IP address (both
3529 * in host byte order), classify the candidate into one of three
3530 * buckets in relation to the target by bumping the counters passed
3534 * a_targetAddr : Target address.
3535 * a_candAddr : Candidate address.
3536 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
3537 * addresses are either in the same network
3538 * or the same subnet.
3539 * a_diffSubnetP : ...when the candidate is in a different
3541 * a_diffNetworkP : ...when the candidate is in a different
3548 * The target and candidate addresses are both in host byte
3549 * order, NOT network byte order, when passed in.
3553 *------------------------------------------------------------------------*/
3556 h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
3557 afs_int32 * a_sameNetOrSubnetP, afs_int32 * a_diffSubnetP,
3558 afs_int32 * a_diffNetworkP)
3559 { /*h_ClassifyAddress */
3561 afs_uint32 targetNet;
3562 afs_uint32 targetSubnet;
3564 afs_uint32 candSubnet;
3567 * Put bad values into the subnet info to start with.
3569 targetSubnet = (afs_uint32) 0;
3570 candSubnet = (afs_uint32) 0;
3573 * Pull out the network and subnetwork numbers from the target
3574 * and candidate addresses. We can short-circuit this whole
3575 * affair if the target and candidate addresses are not of the
3578 if (IN_CLASSA(a_targetAddr)) {
3579 if (!(IN_CLASSA(a_candAddr))) {
3580 (*a_diffNetworkP)++;
3583 targetNet = a_targetAddr & IN_CLASSA_NET;
3584 candNet = a_candAddr & IN_CLASSA_NET;
3585 if (IN_SUBNETA(a_targetAddr))
3586 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
3587 if (IN_SUBNETA(a_candAddr))
3588 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
3589 } else if (IN_CLASSB(a_targetAddr)) {
3590 if (!(IN_CLASSB(a_candAddr))) {
3591 (*a_diffNetworkP)++;
3594 targetNet = a_targetAddr & IN_CLASSB_NET;
3595 candNet = a_candAddr & IN_CLASSB_NET;
3596 if (IN_SUBNETB(a_targetAddr))
3597 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
3598 if (IN_SUBNETB(a_candAddr))
3599 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
3600 } /*Class B target */
3601 else if (IN_CLASSC(a_targetAddr)) {
3602 if (!(IN_CLASSC(a_candAddr))) {
3603 (*a_diffNetworkP)++;
3606 targetNet = a_targetAddr & IN_CLASSC_NET;
3607 candNet = a_candAddr & IN_CLASSC_NET;
3610 * Note that class C addresses can't have subnets,
3611 * so we leave the defaults untouched.
3613 } /*Class C target */
3615 targetNet = a_targetAddr;
3616 candNet = a_candAddr;
3617 } /*Class D address */
3620 * Now, simply compare the extracted net and subnet values for
3621 * the two addresses (which at this point are known to be of the
3624 if (targetNet == candNet) {
3625 if (targetSubnet == candSubnet)
3626 (*a_sameNetOrSubnetP)++;
3630 (*a_diffNetworkP)++;
3632 } /*h_ClassifyAddress */
3635 /*------------------------------------------------------------------------
3636 * EXPORTED h_GetHostNetStats
3639 * Iterate through the host table, and classify each (non-deleted)
3640 * host entry into ``proximity'' categories (same net or subnet,
3641 * different subnet, different network).
3644 * a_numHostsP : Set to total number of (non-deleted) hosts.
3645 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
3646 * a_diffSubnetP : Set to # hosts on diff subnet as server.
3647 * a_diffNetworkP : Set to # hosts on diff network as server.
3653 * We only count non-deleted hosts. The storage pointed to by our
3654 * parameters is zeroed upon entry.
3658 *------------------------------------------------------------------------*/
3661 h_GetHostNetStats(afs_int32 * a_numHostsP, afs_int32 * a_sameNetOrSubnetP,
3662 afs_int32 * a_diffSubnetP, afs_int32 * a_diffNetworkP)
3663 { /*h_GetHostNetStats */
3665 struct host *hostP; /*Ptr to current host entry */
3666 afs_uint32 currAddr_HBO; /*Curr host addr, host byte order */
3670 * Clear out the storage pointed to by our parameters.
3672 *a_numHostsP = (afs_int32) 0;
3673 *a_sameNetOrSubnetP = (afs_int32) 0;
3674 *a_diffSubnetP = (afs_int32) 0;
3675 *a_diffNetworkP = (afs_int32) 0;
3678 for (count = 0, hostP = hostList; hostP && count < hostCount; hostP = hostP->next, count++) {
3679 if (!(hostP->hostFlags & HOSTDELETED)) {
3681 * Bump the number of undeleted host entries found.
3682 * In classifying the current entry's address, make
3683 * sure to first convert to host byte order.
3686 currAddr_HBO = (afs_uint32) ntohl(hostP->host);
3687 h_ClassifyAddress(FS_HostAddr_HBO, currAddr_HBO,
3688 a_sameNetOrSubnetP, a_diffSubnetP,
3690 } /*Only look at non-deleted hosts */
3691 } /*For each host record hashed to this index */
3692 if (count != hostCount) {
3693 ViceLog(0, ("h_GetHostNetStats found %d of %d hosts\n", count, hostCount));
3694 } else if (hostP != NULL) {
3695 ViceLog(0, ("h_GetHostNetStats found more than %d hosts\n", hostCount));
3696 ShutDownAndCore(PANIC);
3699 } /*h_GetHostNetStats */
3701 static afs_uint32 checktime;
3702 static afs_uint32 clientdeletetime;
3703 static struct AFSFid zerofid;
3707 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
3708 * Since it can serialize them, and pile up, it should be a separate LWP
3709 * from other events.
3713 CheckHost(struct host *host, int flags, void *rock)
3715 struct client *client;
3716 struct rx_connection *cb_conn = NULL;
3719 #ifdef AFS_DEMAND_ATTACH_FS
3720 /* kill the checkhost lwp ASAP during shutdown */
3722 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3724 return H_ENUMERATE_BAIL(flags);
3729 /* Host is held by h_Enumerate */
3731 for (client = host->FirstClient; client; client = client->next) {
3732 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3733 client->deleted = 1;
3734 host->hostFlags |= CLIENTDELETED;
3737 if (host->LastCall < checktime) {
3739 if (!(host->hostFlags & HOSTDELETED)) {
3740 host->hostFlags |= HWHO_INPROGRESS;
3741 cb_conn = host->callback_rxcon;
3742 rx_GetConnection(cb_conn);
3743 if (host->LastCall < clientdeletetime) {
3744 host->hostFlags |= HOSTDELETED;
3745 if (!(host->hostFlags & VENUSDOWN)) {
3746 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3747 if (host->interface) {
3750 RXAFSCB_InitCallBackState3(cb_conn,
3756 RXAFSCB_InitCallBackState(cb_conn);
3759 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3762 (void)afs_inet_ntoa_r(host->host, hoststr);
3764 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3765 hoststr, ntohs(host->port)));
3766 host->hostFlags |= VENUSDOWN;
3768 /* Note: it's safe to delete hosts even if they have call
3769 * back state, because break delayed callbacks (called when a
3770 * message is received from the workstation) will always send a
3771 * break all call backs to the workstation if there is no
3776 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3778 (void)afs_inet_ntoa_r(host->host, hoststr);
3779 if (host->interface) {
3780 afsUUID uuid = host->interface->uuid;
3782 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3785 if (MultiProbeAlternateAddress_r(host)) {
3786 ViceLog(0,("CheckHost: Probing all interfaces of host %s:%d failed, code %d\n",
3787 hoststr, ntohs(host->port), code));
3788 host->hostFlags |= VENUSDOWN;
3793 code = RXAFSCB_Probe(cb_conn);
3797 ("CheckHost: Probe failed for host %s:%d, code %d\n",
3798 hoststr, ntohs(host->port), code));
3799 host->hostFlags |= VENUSDOWN;
3805 rx_PutConnection(cb_conn);
3808 host->hostFlags &= ~HWHO_INPROGRESS;
3819 CheckHost_r(struct host *host, void *dummy)
3821 struct client *client;
3822 struct rx_connection *cb_conn = NULL;
3825 #ifdef AFS_DEMAND_ATTACH_FS
3826 /* kill the checkhost lwp ASAP during shutdown */
3828 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3830 return H_ENUMERATE_BAIL(0);
3835 /* Host is held by h_Enumerate_r */
3836 for (client = host->FirstClient; client; client = client->next) {
3837 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3838 client->deleted = 1;
3839 host->hostFlags |= CLIENTDELETED;
3842 if (host->LastCall < checktime) {
3844 if (!(host->hostFlags & HOSTDELETED)) {
3845 host->hostFlags |= HWHO_INPROGRESS;
3846 cb_conn = host->callback_rxcon;
3847 rx_GetConnection(cb_conn);
3848 if (host->LastCall < clientdeletetime) {
3849 host->hostFlags |= HOSTDELETED;
3850 if (!(host->hostFlags & VENUSDOWN)) {
3851 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3852 if (host->interface) {
3855 RXAFSCB_InitCallBackState3(cb_conn,
3861 RXAFSCB_InitCallBackState(cb_conn);
3864 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3867 (void)afs_inet_ntoa_r(host->host, hoststr);
3869 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3870 hoststr, ntohs(host->port)));
3871 host->hostFlags |= VENUSDOWN;
3873 /* Note: it's safe to delete hosts even if they have call
3874 * back state, because break delayed callbacks (called when a
3875 * message is received from the workstation) will always send a
3876 * break all call backs to the workstation if there is no
3881 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3883 (void)afs_inet_ntoa_r(host->host, hoststr);
3884 if (host->interface) {
3885 afsUUID uuid = host->interface->uuid;
3887 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3890 if (MultiProbeAlternateAddress_r(host)) {
3891 ViceLog(0,("CheckHost_r: Probing all interfaces of host %s:%d failed, code %d\n",
3892 hoststr, ntohs(host->port), code));
3893 host->hostFlags |= VENUSDOWN;
3898 code = RXAFSCB_Probe(cb_conn);
3902 ("CheckHost_r: Probe failed for host %s:%d, code %d\n",
3903 hoststr, ntohs(host->port), code));
3904 host->hostFlags |= VENUSDOWN;
3910 rx_PutConnection(cb_conn);
3913 host->hostFlags &= ~HWHO_INPROGRESS;
3923 * Set VenusDown for any hosts that have not had a call in 15 minutes and
3924 * don't respond to a probe. Note that VenusDown can only be cleared if
3925 * a message is received from the host (see ServerLWP in file.c).
3926 * Delete hosts that have not had any calls in 1 hour, clients that
3927 * have not had any calls in 15 minutes.
3929 * This routine is called roughly every 5 minutes.
3934 afs_uint32 now = FT_ApproxTime();
3936 memset(&zerofid, 0, sizeof(zerofid));
3938 * Send a probe to the workstation if it hasn't been heard from in
3941 checktime = now - 15 * 60;
3942 clientdeletetime = now - 120 * 60; /* 2 hours ago */
3945 h_Enumerate_r(CheckHost_r, hostList, NULL);
3950 * This is called with host locked and held. At this point, the
3951 * hostAddrHashTable has an entry for the primary addr/port inserted
3952 * by h_Alloc_r(). No other interfaces should be considered valid.
3954 * The addresses in the interfaceAddr list are in host byte order.
3957 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
3964 struct Interface *interface;
3967 afs_uint16 port7001 = htons(7001);
3972 number = interf->numberOfInterfaces;
3973 myAddr = host->host; /* current interface address */
3974 myPort = host->port; /* current port */
3977 ("initInterfaceAddr : host %s:%d numAddr %d\n",
3978 afs_inet_ntoa_r(myAddr, hoststr), ntohs(myPort), number));
3980 /* validation checks */
3981 if (number < 0 || number > AFS_MAX_INTERFACE_ADDR) {
3983 ("Invalid number of alternate addresses is %d\n", number));
3988 * The client's notion of its own IP addresses is not reliable.
3990 * 1. The client list might contain private address ranges which
3991 * are likely to be re-used by many clients allocated addresses
3994 * 2. The client list will not include any public addresses that
3995 * are hidden by a NAT.
3997 * 3. Private address ranges that are exposed to the server will
3998 * be obtained from the rx connections that use them.
4000 * 4. Lists provided by the client are not necessarily truthful.
4001 * Many existing clients (UNIX) do not refresh the IP address
4002 * list as the actual assigned addresses change. The end result
4003 * is that they report the initial address list for the lifetime
4004 * of the process. In other words, a client can report addresses
4005 * that they are in fact not using. Adding these addresses to
4006 * the host interface list without verification is not only
4007 * pointless, it is downright dangerous.
4009 * We therefore do not add alternate addresses to the addr hash table.
4010 * We only use them for multi-rx callback breaks.
4014 * Convert IP addresses to network byte order, and remove
4015 * duplicate IP addresses from the interface list, and
4016 * determine whether or not the incoming addr/port is
4017 * listed. Note that if the address matches it is not
4018 * truly a match because the port number for the entries
4019 * in the interface list are port 7001 and the port number
4020 * for this connection might not be 7001.
4022 for (i = 0, count = 0, found = 0; i < number; i++) {
4023 interf->addr_in[i] = htonl(interf->addr_in[i]);
4024 for (j = 0; j < count; j++) {
4025 if (interf->addr_in[j] == interf->addr_in[i])
4029 interf->addr_in[count] = interf->addr_in[i];
4030 if (interf->addr_in[count] == myAddr &&
4038 * Allocate and initialize an interface structure for this host.
4041 interface = (struct Interface *)
4042 malloc(sizeof(struct Interface) +
4043 (sizeof(struct AddrPort) * (count - 1)));
4045 ViceLogThenPanic(0, ("Failed malloc in initInterfaceAddr_r 1\n"));
4047 interface->numberOfInterfaces = count;
4049 interface = (struct Interface *)
4050 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * count));
4052 ViceLogThenPanic(0, ("Failed malloc in initInterfaceAddr_r 2\n"));
4054 interface->numberOfInterfaces = count + 1;
4055 interface->interface[count].addr = myAddr;
4056 interface->interface[count].port = myPort;
4057 interface->interface[count].valid = 1;
4060 for (i = 0; i < count; i++) {
4062 interface->interface[i].addr = interf->addr_in[i];
4063 /* We store the port as 7001 because the addresses reported by
4064 * TellMeAboutYourself and WhoAreYou RPCs are only valid if they
4065 * are coming from fully connected hosts (no NAT/PATs)
4067 interface->interface[i].port = port7001;
4068 interface->interface[i].valid =
4069 (interf->addr_in[i] == myAddr && port7001 == myPort) ? 1 : 0;
4072 interface->uuid = interf->uuid;
4074 osi_Assert(!host->interface);
4075 host->interface = interface;
4077 if (LogLevel >= 125) {
4078 afsUUID_to_string(&interface->uuid, uuidstr, 127);
4080 ViceLog(125, ("--- uuid %s\n", uuidstr));
4081 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
4082 ViceLog(125, ("--- alt address %s:%d\n",
4083 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
4084 ntohs(host->interface->interface[i].port)));
4091 /* deleted a HashChain structure for this address and host */
4092 /* returns 1 on success */
4094 h_DeleteHostFromAddrHashTable_r(afs_uint32 addr, afs_uint16 port,
4098 struct h_AddrHashChain **hp, *th;
4100 if (addr == 0 && port == 0)
4103 for (hp = &hostAddrHashTable[h_HashIndex(addr)]; (th = *hp);
4105 osi_Assert(th->hostPtr);
4106 if (th->hostPtr == host && th->addr == addr && th->port == port) {
4107 ViceLog(125, ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d)\n",
4108 host, afs_inet_ntoa_r(host->host, hoststr),
4109 ntohs(host->port)));
4116 ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) not found\n",
4117 host, afs_inet_ntoa_r(host->host, hoststr),
4118 ntohs(host->port)));
4124 ** prints out all alternate interface address for the host. The 'level'
4125 ** parameter indicates what level of debugging sets this output
4128 printInterfaceAddr(struct host *host, int level)
4133 if (host->interface) {
4134 /* check alternate addresses */
4135 number = host->interface->numberOfInterfaces;
4137 ViceLog(level, ("no-addresses "));
4139 for (i = 0; i < number; i++)
4140 ViceLog(level, ("%s:%d ", afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
4141 ntohs(host->interface->interface[i].port)));
4144 ViceLog(level, ("\n"));