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, held, 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. The param flags is passed to (*proc) as the
959 * param flags, permitting (*proc) to stop the enumeration (BAIL).
961 * Needed? Why not always h_Hold_r and h_Release_r in (*proc), or even -never-
962 * h_Hold_r or h_Release_r in (*proc)?
964 * **The proc should return 0 if the host should be released, 1 if it should
965 * be held after enumeration.
968 h_Enumerate(int (*proc) (struct host*, int, void *), void *param)
970 struct host *host, **list;
976 if (hostCount == 0) {
980 list = (struct host **)malloc(hostCount * sizeof(struct host *));
982 ViceLog(0, ("Failed malloc in h_Enumerate (list)\n"));
983 osi_Panic("Failed malloc in h_Enumerate (list)\n");
985 flags = (int *)malloc(hostCount * sizeof(int));
987 ViceLog(0, ("Failed malloc in h_Enumerate (flags)\n"));
988 osi_Panic("Failed malloc in h_Enumerate (flags)\n");
990 for (totalCount = count = 0, host = hostList;
991 host && totalCount < hostCount;
992 host = host->next, totalCount++) {
994 if (!(host->hostFlags & HOSTDELETED)) {
1000 if (totalCount != hostCount) {
1001 ViceLog(0, ("h_Enumerate found %d of %d hosts\n", totalCount, hostCount));
1002 } else if (host != NULL) {
1003 ViceLog(0, ("h_Enumerate found more than %d hosts\n", hostCount));
1004 ShutDownAndCore(PANIC);
1007 for (i = 0; i < count; i++) {
1008 flags[i] = (*proc) (list[i], flags[i], param);
1010 h_Release_r(list[i]);
1012 /* bail out of the enumeration early */
1013 if (H_ENUMERATE_ISSET_BAIL(flags[i]))
1017 free((void *)flags);
1021 /* h_Enumerate_r (revised):
1022 * Calls (*proc)(host, flags, param) for each host in hostList, starting
1023 * at enumstart. Called only under H_LOCK. Hosts may be deleted (have
1024 * delete flag set); ditto for clients. refCount is always incremented
1025 * before (*proc) is called. The param flags is passed to (*proc) as the
1026 * param flags, permitting (*proc) to stop the enumeration (BAIL).
1028 * Needed? Why not always h_Hold_r and h_Release_r in (*proc), or even -never-
1029 * h_Hold_r or h_Release_r in (*proc)?
1031 * @note Assumes that hostList is only prepended to, that a host is never
1032 * inserted into the middle. Otherwise this would not be guaranteed to
1035 * **The proc should return 0 if the host should be released, 1 if it should
1036 * be held after enumeration.
1039 h_Enumerate_r(int (*proc) (struct host *, int, void *),
1040 struct host *enumstart, void *param)
1042 struct host *host, *next;
1048 if (hostCount == 0) {
1055 /* find the first non-deleted host, so we know where to actually start
1057 for (count = 0; host && count < hostCount; count++) {
1058 if (!(host->hostFlags & HOSTDELETED)) {
1065 /* we didn't find a non-deleted host... */
1067 if (host && count >= hostCount) {
1068 /* ...because we found a loop */
1069 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", hostCount));
1070 ShutDownAndCore(PANIC);
1073 /* ...because the hostList is full of deleted hosts */
1077 h_Hold_r(enumstart);
1079 /* remember hostCount, lest it change over the potential H_LOCK drop in
1081 origHostCount = hostCount;
1083 for (count = 0, host = enumstart; host && count < origHostCount; host = next, flags = nflags, count++) {
1086 /* find the next non-deleted host */
1087 while (next && (next->hostFlags & HOSTDELETED)) {
1089 /* inc count for the skipped-over host */
1090 if (++count > origHostCount) {
1091 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", origHostCount));
1092 ShutDownAndCore(PANIC);
1095 if (next && !H_ENUMERATE_ISSET_BAIL(flags))
1098 if (!(host->hostFlags & HOSTDELETED)) {
1099 flags = (*proc) (host, flags, param);
1100 if (H_ENUMERATE_ISSET_BAIL(flags)) {
1101 h_Release_r(host); /* this might free up the host */
1105 h_Release_r(host); /* this might free up the host */
1107 if (host != NULL && count >= origHostCount) {
1108 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", origHostCount));
1109 ShutDownAndCore(PANIC);
1111 } /*h_Enumerate_r */
1114 /* inserts a new HashChain structure corresponding to this UUID */
1116 h_AddHostToUuidHashTable_r(struct afsUUID *uuid, struct host *host)
1119 struct h_UuidHashChain *chain;
1120 char uuid1[128], uuid2[128];
1123 /* hash into proper bucket */
1124 index = h_UuidHashIndex(uuid);
1126 /* don't add the same entry multiple times */
1127 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
1128 if (!chain->hostPtr)
1131 if (chain->hostPtr->interface &&
1132 afs_uuid_equal(&chain->hostPtr->interface->uuid, uuid)) {
1133 if (LogLevel >= 125) {
1134 afsUUID_to_string(&chain->hostPtr->interface->uuid, uuid1,
1136 afsUUID_to_string(uuid, uuid2, 127);
1137 ViceLog(125, ("h_AddHostToUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s) exists as %s:%d (uuid %s)\n",
1139 afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1140 ntohs(chain->hostPtr->port), uuid2));
1146 /* insert into beginning of list for this bucket */
1147 chain = (struct h_UuidHashChain *)malloc(sizeof(struct h_UuidHashChain));
1149 ViceLog(0, ("Failed malloc in h_AddHostToUuidHashTable_r\n"));
1150 osi_Panic("Failed malloc in h_AddHostToUuidHashTable_r\n");
1152 chain->hostPtr = host;
1153 chain->next = hostUuidHashTable[index];
1154 hostUuidHashTable[index] = chain;
1157 afsUUID_to_string(uuid, uuid2, 127);
1159 ("h_AddHostToUuidHashTable_r: host %p (%s:%d) added as uuid %s\n",
1160 host, afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1161 ntohs(chain->hostPtr->port), uuid2));
1164 /* deletes a HashChain structure corresponding to this host */
1166 h_DeleteHostFromUuidHashTable_r(struct host *host)
1169 struct h_UuidHashChain **uhp, *uth;
1173 if (!host->interface)
1176 /* hash into proper bucket */
1177 index = h_UuidHashIndex(&host->interface->uuid);
1179 if (LogLevel >= 125)
1180 afsUUID_to_string(&host->interface->uuid, uuid1, 127);
1181 for (uhp = &hostUuidHashTable[index]; (uth = *uhp); uhp = &uth->next) {
1182 osi_Assert(uth->hostPtr);
1183 if (uth->hostPtr == host) {
1185 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d)\n",
1186 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1187 ntohs(host->port)));
1194 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d) not found\n",
1195 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1196 ntohs(host->port)));
1201 * This is called with host locked and held.
1203 * All addresses are in network byte order.
1206 invalidateInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1210 struct Interface *interface;
1211 char hoststr[16], hoststr2[16];
1214 osi_Assert(host->interface);
1216 ViceLog(125, ("invalidateInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1217 host, afs_inet_ntoa_r(host->host, hoststr),
1218 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1222 * Make sure this address is on the list of known addresses
1225 interface = host->interface;
1226 number = host->interface->numberOfInterfaces;
1227 for (i = 0; i < number; i++) {
1228 if (interface->interface[i].addr == addr &&
1229 interface->interface[i].port == port) {
1230 if (interface->interface[i].valid) {
1231 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1232 interface->interface[i].valid = 0;
1243 * This is called with host locked and held. This function differs
1244 * from removeInterfaceAddr_r in that it is called when the address
1245 * is being removed from the host regardless of whether or not there
1246 * is an interface list for the host. This function will delete the
1247 * host if there are no addresses left on it.
1249 * All addresses are in network byte order.
1252 removeAddress_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1255 char hoststr[16], hoststr2[16];
1256 struct rx_connection *rxconn;
1258 if (!host->interface || host->interface->numberOfInterfaces == 1) {
1259 if (host->host == addr && host->port == port) {
1261 ("Removing only address for host %" AFS_PTR_FMT " (%s:%d), deleting host.\n",
1262 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1263 host->hostFlags |= HOSTDELETED;
1265 * Do not remove the primary addr/port from the hash table.
1266 * It will be ignored due to the HOSTDELETED flag and will
1267 * be removed when h_TossStuff_r() cleans up the HOSTDELETED
1268 * host. Removing it here will only result in a search for
1269 * the host/addr/port in the hash chain which will fail.
1273 ("Removing address that does not belong to host %" AFS_PTR_FMT " (%s:%d).\n",
1274 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1277 if (host->host == addr && host->port == port) {
1278 removeInterfaceAddr_r(host, addr, port);
1280 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1281 if (host->interface->interface[i].valid) {
1283 ("Removed address for host %" AFS_PTR_FMT " (%s:%d), new primary interface %s:%d.\n",
1284 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1285 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr2),
1286 ntohs(host->interface->interface[i].port)));
1287 host->host = host->interface->interface[i].addr;
1288 host->port = host->interface->interface[i].port;
1289 h_AddHostToAddrHashTable_r(host->host, host->port, host);
1294 if (i == host->interface->numberOfInterfaces) {
1296 ("Removed only address for host %" AFS_PTR_FMT " (%s:%d), no valid alternate interfaces, deleting host.\n",
1297 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1298 host->hostFlags |= HOSTDELETED;
1299 /* addr/port was removed from the hash table */
1303 rxconn = host->callback_rxcon;
1304 host->callback_rxcon = NULL;
1307 rx_DestroyConnection(rxconn);
1312 sc = rxnull_NewClientSecurityObject();
1313 host->callback_rxcon =
1314 rx_NewConnection(host->host, host->port, 1, sc, 0);
1315 rx_SetConnDeadTime(host->callback_rxcon, 50);
1316 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
1319 /* not the primary addr/port, just invalidate it */
1320 invalidateInterfaceAddr_r(host, addr, port);
1328 createHostAddrHashChain_r(int index, afs_uint32 addr, afs_uint16 port, struct host *host)
1330 struct h_AddrHashChain *chain;
1333 /* insert into beginning of list for this bucket */
1334 chain = (struct h_AddrHashChain *)malloc(sizeof(struct h_AddrHashChain));
1336 ViceLog(0, ("Failed malloc in h_AddHostToAddrHashTable_r\n"));
1337 osi_Panic("Failed malloc in h_AddHostToAddrHashTable_r\n");
1339 chain->hostPtr = host;
1340 chain->next = hostAddrHashTable[index];
1343 hostAddrHashTable[index] = chain;
1344 ViceLog(125, ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " added as %s:%d\n",
1345 host, afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1349 * Resolve host address conflicts when hashing by address.
1351 * @param[in] addr an ip address of the interface
1352 * @param[in] port the port of the interface
1353 * @param[in] newHost the host being added with this address
1354 * @param[in] oldHost the host previously added with this address
1357 reconcileHosts_r(afs_uint32 addr, afs_uint16 port, struct host *newHost,
1358 struct host *oldHost)
1360 struct rx_connection *cb = NULL;
1362 struct interfaceAddr interf;
1364 afsUUID *newHostUuid = &nulluuid;
1365 afsUUID *oldHostUuid = &nulluuid;
1369 ("reconcileHosts_r: addr %s:%d newHost %" AFS_PTR_FMT " oldHost %"
1370 AFS_PTR_FMT, afs_inet_ntoa_r(addr, hoststr), ntohs(port),
1373 osi_Assert(oldHost != newHost);
1374 caps.Capabilities_val = NULL;
1377 sc = rxnull_NewClientSecurityObject();
1380 cb = rx_NewConnection(addr, port, 1, sc, 0);
1381 rx_SetConnDeadTime(cb, 50);
1382 rx_SetConnHardDeadTime(cb, AFS_HARDDEADTIME);
1387 code = RXAFSCB_TellMeAboutYourself(cb, &interf, &caps);
1388 if (code == RXGEN_OPCODE) {
1389 code = RXAFSCB_WhoAreYou(cb, &interf);
1393 if (code == RXGEN_OPCODE ||
1394 (code == 0 && afs_uuid_equal(&interf.uuid, &nulluuid))) {
1396 ("reconcileHosts_r: WhoAreYou not supported for connection (%s:%d), error %d\n",
1397 afs_inet_ntoa_r(addr, hoststr), ntohs(port), code));
1402 ("reconcileHosts_r: WhoAreYou failed for connection (%s:%d), error %d\n",
1403 afs_inet_ntoa_r(addr, hoststr), ntohs(port), code));
1407 /* Since lock was dropped, the hosts may have been deleted during the rpcs. */
1408 if ((newHost->hostFlags & HOSTDELETED)
1409 && (oldHost->hostFlags & HOSTDELETED)) {
1411 ("reconcileHosts_r: new and old hosts were deleted during probe.\n"));
1415 /* A check can be done if at least one of the hosts has a uuid. It
1416 * is an error if the hosts have the same (not null) uuid. */
1417 if ((!(newHost->hostFlags & HOSTDELETED)) && newHost->interface) {
1418 newHostUuid = &(newHost->interface->uuid);
1420 if ((!(oldHost->hostFlags & HOSTDELETED)) && oldHost->interface) {
1421 oldHostUuid = &(oldHost->interface->uuid);
1423 if (afs_uuid_equal(newHostUuid, &nulluuid) &&
1424 afs_uuid_equal(oldHostUuid, &nulluuid)) {
1426 ("reconcileHosts_r: Cannot reconcile hosts for connection (%s:%d), no uuids\n",
1427 afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1430 if (afs_uuid_equal(newHostUuid, oldHostUuid)) {
1432 ("reconcileHosts_r: Cannot reconcile hosts for connection (%s:%d), same uuids\n",
1433 afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1437 /* Determine which host should be hashed */
1438 if ((!(newHost->hostFlags & HOSTDELETED))
1439 && afs_uuid_equal(newHostUuid, &(interf.uuid))) {
1440 /* Install the new host into the hash before removing the stale
1441 * addresses. Walk the hash chain again since the hash table may have
1442 * been changed when the host lock was dropped to get the uuid. */
1443 struct h_AddrHashChain *chain;
1444 int index = h_HashIndex(addr);
1445 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1446 if (chain->addr == addr && chain->port == port) {
1447 chain->hostPtr = newHost;
1448 removeAddress_r(oldHost, addr, port);
1452 createHostAddrHashChain_r(index, addr, port, newHost);
1453 removeAddress_r(oldHost, addr, port);
1456 if ((!(oldHost->hostFlags & HOSTDELETED))
1457 && afs_uuid_equal(oldHostUuid, &(interf.uuid))) {
1458 removeAddress_r(newHost, addr, port);
1463 if (!(newHost->hostFlags & HOSTDELETED)) {
1464 removeAddress_r(newHost, addr, port);
1466 if (!(oldHost->hostFlags & HOSTDELETED)) {
1467 removeAddress_r(oldHost, addr, port);
1471 h_Release_r(newHost);
1472 h_Release_r(oldHost);
1473 rx_DestroyConnection(cb);
1477 /* inserts a new HashChain structure corresponding to this address */
1479 h_AddHostToAddrHashTable_r(afs_uint32 addr, afs_uint16 port, struct host *host)
1482 struct h_AddrHashChain *chain;
1485 /* hash into proper bucket */
1486 index = h_HashIndex(addr);
1488 /* don't add the same address:port pair entry multiple times */
1489 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1490 if (chain->addr == addr && chain->port == port) {
1491 if (chain->hostPtr == host) {
1493 ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) already hashed\n",
1494 host, afs_inet_ntoa_r(chain->addr, hoststr),
1495 ntohs(chain->port)));
1498 if (!(chain->hostPtr->hostFlags & HOSTDELETED)) {
1499 /* attempt to resolve host address collision */
1500 reconcileHosts_r(addr, port, host, chain->hostPtr);
1505 createHostAddrHashChain_r(index, addr, port, host);
1509 * This is called with host locked and held.
1510 * It is called to either validate or add an additional interface
1511 * address/port on the specified host.
1513 * All addresses are in network byte order.
1516 addInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1520 struct Interface *interface;
1521 char hoststr[16], hoststr2[16];
1524 osi_Assert(host->interface);
1527 * Make sure this address is on the list of known addresses
1530 number = host->interface->numberOfInterfaces;
1531 for (i = 0; i < number; i++) {
1532 if (host->interface->interface[i].addr == addr &&
1533 host->interface->interface[i].port == port) {
1535 ("addInterfaceAddr : found host %" AFS_PTR_FMT " (%s:%d) adding %s:%d%s\n",
1536 host, afs_inet_ntoa_r(host->host, hoststr),
1537 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1538 ntohs(port), host->interface->interface[i].valid ? "" :
1541 if (host->interface->interface[i].valid == 0) {
1542 host->interface->interface[i].valid = 1;
1543 h_AddHostToAddrHashTable_r(addr, port, host);
1549 ViceLog(125, ("addInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) adding %s:%d\n",
1550 host, afs_inet_ntoa_r(host->host, hoststr),
1551 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1554 interface = (struct Interface *)
1555 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * number));
1557 ViceLog(0, ("Failed malloc in addInterfaceAddr_r\n"));
1558 osi_Panic("Failed malloc in addInterfaceAddr_r\n");
1560 interface->numberOfInterfaces = number + 1;
1561 interface->uuid = host->interface->uuid;
1562 for (i = 0; i < number; i++)
1563 interface->interface[i] = host->interface->interface[i];
1565 /* Add the new valid interface */
1566 interface->interface[number].addr = addr;
1567 interface->interface[number].port = port;
1568 interface->interface[number].valid = 1;
1569 h_AddHostToAddrHashTable_r(addr, port, host);
1570 free(host->interface);
1571 host->interface = interface;
1578 * This is called with host locked and held.
1580 * All addresses are in network byte order.
1583 removeInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1587 struct Interface *interface;
1588 char hoststr[16], hoststr2[16];
1591 osi_Assert(host->interface);
1593 ViceLog(125, ("removeInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1594 host, afs_inet_ntoa_r(host->host, hoststr),
1595 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1599 * Make sure this address is on the list of known addresses
1602 interface = host->interface;
1603 number = host->interface->numberOfInterfaces;
1604 for (i = 0; i < number; i++) {
1605 if (interface->interface[i].addr == addr &&
1606 interface->interface[i].port == port) {
1607 if (interface->interface[i].valid)
1608 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1610 for (; i < number; i++) {
1611 interface->interface[i] = interface->interface[i+1];
1613 interface->numberOfInterfaces = number;
1624 h_threadquota(int waiting)
1629 } else if (lwps > 32) {
1632 } else if (lwps > 16) {
1642 /* If found, host is returned with refCount incremented */
1644 h_GetHost_r(struct rx_connection *tcon)
1647 struct host *oldHost;
1649 struct interfaceAddr interf;
1650 int interfValid = 0;
1651 struct Identity *identP = NULL;
1654 char hoststr[16], hoststr2[16];
1656 struct rx_connection *cb_conn = NULL;
1657 struct rx_connection *cb_in = NULL;
1659 caps.Capabilities_val = NULL;
1661 haddr = rxr_HostOf(tcon);
1662 hport = rxr_PortOf(tcon);
1665 rx_DestroyConnection(cb_in);
1668 if (caps.Capabilities_val)
1669 free(caps.Capabilities_val);
1670 caps.Capabilities_val = NULL;
1671 caps.Capabilities_len = 0;
1674 if (h_Lookup_r(haddr, hport, &host))
1676 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
1677 if (host && !identP && !(host->Console & 1)) {
1678 /* This is a new connection, and we already have a host
1679 * structure for this address. Verify that the identity
1680 * of the caller matches the identity in the host structure.
1682 if ((host->hostFlags & HWHO_INPROGRESS) &&
1683 h_threadquota(host->lock.num_waiting)) {
1689 if (!(host->hostFlags & ALTADDR) ||
1690 (host->hostFlags & HOSTDELETED)) {
1691 /* Another thread is doing initialization
1692 * or this host was deleted while we
1693 * waited for the lock. */
1696 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1697 host, afs_inet_ntoa_r(host->host, hoststr),
1698 ntohs(host->port)));
1702 host->hostFlags |= HWHO_INPROGRESS;
1703 host->hostFlags &= ~ALTADDR;
1705 /* We received a new connection from an IP address/port
1706 * that is associated with 'host' but the address/port of
1707 * the callback connection does not have to match it.
1708 * If there is a match, we can use the existing callback
1709 * connection to verify the UUID. If they do not match
1710 * we need to use a new callback connection to verify the
1711 * UUID of the incoming caller and perhaps use the old
1712 * callback connection to verify that the old address/port
1716 cb_conn = host->callback_rxcon;
1717 rx_GetConnection(cb_conn);
1719 if (haddr == host->host && hport == host->port) {
1720 /* The existing callback connection matches the
1721 * incoming connection so just use it.
1724 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1725 if (code == RXGEN_OPCODE)
1726 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1728 /* We do not have a match. Create a new connection
1729 * for the new addr/port and use multi_Rx to probe
1730 * both of them simultaneously.
1733 sc = rxnull_NewClientSecurityObject();
1734 cb_in = rx_NewConnection(haddr, hport, 1, sc, 0);
1735 rx_SetConnDeadTime(cb_in, 50);
1736 rx_SetConnHardDeadTime(cb_in, AFS_HARDDEADTIME);
1739 RXAFSCB_TellMeAboutYourself(cb_in, &interf, &caps);
1740 if (code == RXGEN_OPCODE)
1741 code = RXAFSCB_WhoAreYou(cb_in, &interf);
1743 rx_PutConnection(cb_conn);
1746 if ((code == RXGEN_OPCODE) ||
1747 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1748 identP = (struct Identity *)malloc(sizeof(struct Identity));
1750 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1751 osi_Panic("Failed malloc in h_GetHost_r\n");
1754 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1755 if (cb_in == NULL) {
1756 /* The host on this connection was unable to respond to
1757 * the WhoAreYou. We will treat this as a new connection
1758 * from the existing host. The worst that can happen is
1759 * that we maintain some extra callback state information */
1760 if (host->interface) {
1762 ("Host %" AFS_PTR_FMT " (%s:%d) used to support WhoAreYou, deleting.\n",
1764 afs_inet_ntoa_r(host->host, hoststr),
1765 ntohs(host->port)));
1766 host->hostFlags |= HOSTDELETED;
1767 host->hostFlags &= ~HWHO_INPROGRESS;
1774 /* The incoming connection does not support WhoAreYou but
1775 * the original one might have. Use removeAddress_r() to
1776 * remove this addr/port from the host that was found.
1777 * If there are no more addresses left for the host it
1778 * will be deleted. Then we retry.
1780 removeAddress_r(host, haddr, hport);
1781 host->hostFlags &= ~HWHO_INPROGRESS;
1782 host->hostFlags |= ALTADDR;
1788 } else if (code == 0) {
1790 identP = (struct Identity *)malloc(sizeof(struct Identity));
1792 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1793 osi_Panic("Failed malloc in h_GetHost_r\n");
1796 identP->uuid = interf.uuid;
1797 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1798 /* Check whether the UUID on this connection matches
1799 * the UUID in the host structure. If they don't match
1800 * then this is not the same host as before. */
1801 if (!host->interface
1802 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid)) {
1805 ("Uuid doesn't match connection (%s:%d).\n",
1806 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport)));
1807 removeAddress_r(host, haddr, hport);
1810 ("Uuid doesn't match host %" AFS_PTR_FMT " (%s:%d).\n",
1811 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1813 removeAddress_r(host, host->host, host->port);
1815 host->hostFlags &= ~HWHO_INPROGRESS;
1816 host->hostFlags |= ALTADDR;
1822 /* the UUID matched the client at the incoming addr/port
1823 * but this is not the address of the active callback
1824 * connection. Try that connection and see if the client
1825 * is still there and if the reported UUID is the same.
1828 afsUUID uuid = host->interface->uuid;
1829 cb_conn = host->callback_rxcon;
1830 rx_GetConnection(cb_conn);
1831 rx_SetConnDeadTime(cb_conn, 2);
1832 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1834 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1836 rx_SetConnDeadTime(cb_conn, 50);
1837 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1838 rx_PutConnection(cb_conn);
1841 /* The primary address is either not responding or
1842 * is not the client we are looking for. Need to
1843 * remove the primary address and add swap in the new
1844 * callback connection, and destroy the old one.
1846 struct rx_connection *rxconn;
1847 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
1849 afs_inet_ntoa_r(host->host, hoststr),
1850 ntohs(host->port),code2));
1853 * make sure we add and then remove. otherwise, we
1854 * might end up with no valid interfaces after the
1855 * remove and the host will have been marked deleted.
1857 addInterfaceAddr_r(host, haddr, hport);
1858 removeInterfaceAddr_r(host, host->host, host->port);
1861 rxconn = host->callback_rxcon;
1862 host->callback_rxcon = cb_in;
1867 * If rx_DestroyConnection calls h_FreeConnection we
1868 * will deadlock on the host_glock_mutex. Work around
1869 * the problem by unhooking the client from the
1870 * connection before destroying the connection.
1872 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
1873 rx_DestroyConnection(rxconn);
1879 /* A callback to the incoming connection address is failing.
1880 * Assume that the addr/port is no longer associated with the host
1881 * returned by h_Lookup_r.
1884 ("CB: WhoAreYou failed for connection (%s:%d) , error %d\n",
1885 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport), code));
1886 removeAddress_r(host, haddr, hport);
1887 host->hostFlags &= ~HWHO_INPROGRESS;
1888 host->hostFlags |= ALTADDR;
1892 rx_DestroyConnection(cb_in);
1897 ("CB: WhoAreYou failed for host %" AFS_PTR_FMT " (%s:%d), error %d\n",
1898 host, afs_inet_ntoa_r(host->host, hoststr),
1899 ntohs(host->port), code));
1900 host->hostFlags |= VENUSDOWN;
1903 if (caps.Capabilities_val
1904 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1905 host->hostFlags |= HERRORTRANS;
1907 host->hostFlags &= ~(HERRORTRANS);
1908 host->hostFlags |= ALTADDR;
1909 host->hostFlags &= ~HWHO_INPROGRESS;
1912 if (!(host->hostFlags & ALTADDR)) {
1913 /* another thread is doing the initialisation */
1915 ("Host %" AFS_PTR_FMT " (%s:%d) waiting for host-init to complete\n",
1916 host, afs_inet_ntoa_r(host->host, hoststr),
1917 ntohs(host->port)));
1921 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1922 host, afs_inet_ntoa_r(host->host, hoststr),
1923 ntohs(host->port)));
1927 /* We need to check whether the identity in the host structure
1928 * matches the identity on the connection. If they don't match
1929 * then treat this a new host. */
1930 if (!(host->Console & 1)
1931 && ((!identP->valid && host->interface)
1932 || (identP->valid && !host->interface)
1934 && !afs_uuid_equal(&identP->uuid,
1935 &host->interface->uuid)))) {
1936 char uuid1[128], uuid2[128];
1938 afsUUID_to_string(&identP->uuid, uuid1, 127);
1939 if (host->interface)
1940 afsUUID_to_string(&host->interface->uuid, uuid2, 127);
1942 ("CB: new identity for host %p (%s:%d), "
1943 "deleting(%x %p %s %s)\n",
1944 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1945 identP->valid, host->interface,
1946 identP->valid ? uuid1 : "no_uuid",
1947 host->interface ? uuid2 : "no_uuid"));
1949 /* The host in the cache is not the host for this connection */
1951 host->hostFlags |= HOSTDELETED;
1957 host = h_Alloc_r(tcon); /* returned held and locked */
1958 h_gethostcps_r(host, FT_ApproxTime());
1959 if (!(host->Console & 1)) {
1961 cb_conn = host->callback_rxcon;
1962 rx_GetConnection(cb_conn);
1963 host->hostFlags |= HWHO_INPROGRESS;
1966 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1967 if (code == RXGEN_OPCODE)
1968 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1969 rx_PutConnection(cb_conn);
1972 if ((code == RXGEN_OPCODE) ||
1973 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1976 (struct Identity *)malloc(sizeof(struct Identity));
1981 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
1982 osi_Panic("Failed malloc in h_GetHost_r\n");
1986 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1988 ("Host %" AFS_PTR_FMT " (%s:%d) does not support WhoAreYou.\n",
1989 host, afs_inet_ntoa_r(host->host, hoststr),
1990 ntohs(host->port)));
1992 } else if (code == 0) {
1995 (struct Identity *)malloc(sizeof(struct Identity));
2000 ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
2001 osi_Panic("Failed malloc in h_GetHost_r\n");
2005 identP->uuid = interf.uuid;
2007 rx_SetSpecific(tcon, rxcon_ident_key, identP);
2009 ("WhoAreYou success on host %" AFS_PTR_FMT " (%s:%d)\n",
2010 host, afs_inet_ntoa_r(host->host, hoststr),
2011 ntohs(host->port)));
2013 if (code == 0 && !identP->valid) {
2014 cb_conn = host->callback_rxcon;
2015 rx_GetConnection(cb_conn);
2017 code = RXAFSCB_InitCallBackState(cb_conn);
2018 rx_PutConnection(cb_conn);
2021 } else if (code == 0) {
2022 oldHost = h_LookupUuid_r(&identP->uuid);
2027 if (oldHost->hostFlags & HOSTDELETED) {
2028 h_Unlock_r(oldHost);
2029 h_Release_r(oldHost);
2037 oldHost->hostFlags |= HWHO_INPROGRESS;
2039 if (oldHost->interface) {
2041 afsUUID uuid = oldHost->interface->uuid;
2042 cb_conn = oldHost->callback_rxcon;
2043 rx_GetConnection(cb_conn);
2044 rx_SetConnDeadTime(cb_conn, 2);
2045 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
2047 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
2049 rx_SetConnDeadTime(cb_conn, 50);
2050 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
2051 rx_PutConnection(cb_conn);
2054 /* The primary address is either not responding or
2055 * is not the client we are looking for.
2056 * MultiProbeAlternateAddress_r() will remove the
2057 * alternate interfaces that do not have the same
2059 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
2061 afs_inet_ntoa_r(oldHost->host, hoststr),
2062 ntohs(oldHost->port),code2));
2063 MultiProbeAlternateAddress_r(oldHost);
2070 /* This is a new address for an existing host. Update
2071 * the list of interfaces for the existing host and
2072 * delete the host structure we just allocated. */
2074 /* prevent warnings while manipulating interface lists */
2075 host->hostFlags |= HOSTDELETED;
2077 if (oldHost->host != haddr || oldHost->port != hport) {
2078 struct rx_connection *rxconn;
2081 ("CB: Host %" AFS_PTR_FMT " (%s:%d) has new addr %s:%d\n",
2083 afs_inet_ntoa_r(oldHost->host, hoststr2),
2084 ntohs(oldHost->port),
2085 afs_inet_ntoa_r(haddr, hoststr),
2088 * add then remove. otherwise the host may get marked
2089 * deleted if we removed the only valid address.
2091 addInterfaceAddr_r(oldHost, haddr, hport);
2092 if (probefail || oldHost->host == haddr) {
2094 * The probe failed which means that the old
2095 * address is either unreachable or is not the
2096 * same host we were just contacted by. We will
2097 * also remove addresses if only the port has
2098 * changed because that indicates the client
2101 removeInterfaceAddr_r(oldHost, oldHost->host, oldHost->port);
2104 struct Interface *interface = oldHost->interface;
2105 int number = oldHost->interface->numberOfInterfaces;
2106 for (i = 0; i < number; i++) {
2107 if (interface->interface[i].addr == haddr &&
2108 interface->interface[i].port != hport) {
2110 * We have just been contacted by a client
2111 * that has been seen from behind a NAT
2112 * and at least one other address.
2114 removeInterfaceAddr_r(oldHost, haddr,
2115 interface->interface[i].port);
2120 h_AddHostToAddrHashTable_r(haddr, hport, oldHost);
2121 oldHost->host = haddr;
2122 oldHost->port = hport;
2123 rxconn = oldHost->callback_rxcon;
2124 oldHost->callback_rxcon = host->callback_rxcon;
2125 host->callback_rxcon = rxconn;
2127 /* don't destroy rxconn here; let h_TossStuff_r
2128 * take care of that via h_Release_r below */
2130 host->hostFlags &= ~HWHO_INPROGRESS;
2132 /* release host because it was allocated by h_Alloc_r */
2135 /* the new host is held and locked */
2137 /* This really is a new host */
2138 h_AddHostToUuidHashTable_r(&identP->uuid, host);
2139 cb_conn = host->callback_rxcon;
2140 rx_GetConnection(cb_conn);
2143 RXAFSCB_InitCallBackState3(cb_conn,
2145 rx_PutConnection(cb_conn);
2150 ("InitCallBackState3 success on host %" AFS_PTR_FMT " (%s:%d)\n",
2151 host, afs_inet_ntoa_r(host->host, hoststr),
2152 ntohs(host->port)));
2153 osi_Assert(interfValid == 1);
2154 initInterfaceAddr_r(host, &interf);
2160 ("CB: RCallBackConnectBack failed for %" AFS_PTR_FMT " (%s:%d)\n",
2161 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
2162 host->hostFlags |= VENUSDOWN;
2165 ("CB: RCallBackConnectBack succeeded for %" AFS_PTR_FMT " (%s:%d)\n",
2166 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
2167 host->hostFlags |= RESETDONE;
2170 if (caps.Capabilities_val
2171 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
2172 host->hostFlags |= HERRORTRANS;
2174 host->hostFlags &= ~(HERRORTRANS);
2175 host->hostFlags |= ALTADDR; /* host structure initialization complete */
2176 host->hostFlags &= ~HWHO_INPROGRESS;
2181 if (caps.Capabilities_val)
2182 free(caps.Capabilities_val);
2183 caps.Capabilities_val = NULL;
2184 caps.Capabilities_len = 0;
2186 rx_DestroyConnection(cb_in);
2194 static char localcellname[PR_MAXNAMELEN + 1];
2195 char local_realms[AFS_NUM_LREALMS][AFS_REALM_SZ];
2196 int num_lrealms = -1;
2200 h_InitHostPackage(void)
2202 memset(&nulluuid, 0, sizeof(afsUUID));
2203 afsconf_GetLocalCell(confDir, localcellname, PR_MAXNAMELEN);
2204 if (num_lrealms == -1) {
2206 for (i=0; i<AFS_NUM_LREALMS; i++) {
2207 if (afs_krb_get_lrealm(local_realms[i], i) != 0 /*KSUCCESS*/)
2213 ("afs_krb_get_lrealm failed, using %s.\n",
2215 strncpy(local_realms[0], localcellname, AFS_REALM_SZ);
2221 /* initialize the rest of the local realms to nullstring for debugging */
2222 for (; i<AFS_NUM_LREALMS; i++)
2223 local_realms[i][0] = '\0';
2225 rxcon_ident_key = rx_KeyCreate((rx_destructor_t) free);
2226 rxcon_client_key = rx_KeyCreate((rx_destructor_t) 0);
2227 MUTEX_INIT(&host_glock_mutex, "host glock", MUTEX_DEFAULT, 0);
2231 MapName_r(char *aname, char *acell, afs_int32 * aval)
2236 afs_int32 anamelen, cnamelen;
2240 anamelen = strlen(aname);
2241 if (anamelen >= PR_MAXNAMELEN)
2242 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
2244 lnames.namelist_len = 1;
2245 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
2246 lids.idlist_len = 0;
2247 lids.idlist_val = NULL;
2249 cnamelen = strlen(acell);
2251 if (afs_is_foreign_ticket_name(aname, NULL, acell, localcellname)) {
2253 ("MapName: cell is foreign. cell=%s, localcell=%s, localrealms={%s,%s,%s,%s}\n",
2254 acell, localcellname, local_realms[0],local_realms[1],local_realms[2],local_realms[3]));
2255 if ((anamelen + cnamelen + 1) >= PR_MAXNAMELEN) {
2257 ("MapName: Name too long, using AnonymousID for %s@%s\n",
2259 *aval = AnonymousID;
2262 foreign = 1; /* attempt cross-cell authentication */
2263 tname = (char *)malloc(PR_MAXNAMELEN);
2265 ViceLog(0, ("Failed malloc in MapName_r\n"));
2266 osi_Panic("Failed malloc in MapName_r\n");
2268 strcpy(tname, aname);
2269 tname[anamelen] = '@';
2270 strcpy(tname + anamelen + 1, acell);
2271 lnames.namelist_val = (prname *) tname;
2276 code = hpr_NameToId(&lnames, &lids);
2279 if (lids.idlist_val) {
2280 *aval = lids.idlist_val[0];
2281 if (*aval == AnonymousID) {
2283 ("MapName: NameToId on %s returns anonymousID\n",
2284 lnames.namelist_val[0]));
2286 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
2289 ("MapName: NameToId on '%s' is unknown\n",
2290 lnames.namelist_val[0]));
2296 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
2304 /* NOTE: this returns the client with a Write lock and a refCount */
2306 h_ID2Client(afs_int32 vid)
2308 struct client *client;
2313 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
2314 if (host->hostFlags & HOSTDELETED)
2316 for (client = host->FirstClient; client; client = client->next) {
2317 if (!client->deleted && client->ViceId == vid) {
2320 ObtainWriteLock(&client->lock);
2325 if (count != hostCount) {
2326 ViceLog(0, ("h_ID2Client found %d of %d hosts\n", count, hostCount));
2327 } else if (host != NULL) {
2328 ViceLog(0, ("h_ID2Client found more than %d hosts\n", hostCount));
2329 ShutDownAndCore(PANIC);
2337 * Called by the server main loop. Returns a h_Held client, which must be
2338 * released later the main loop. Allocates a client if the matching one
2339 * isn't around. The client is returned with its reference count incremented
2340 * by one. The caller must call h_ReleaseClient_r when finished with
2343 * The refCount on client->host is returned incremented. h_ReleaseClient_r
2344 * does not decrement the refCount on client->host.
2347 h_FindClient_r(struct rx_connection *tcon)
2349 struct client *client;
2350 struct host *host = NULL;
2351 struct client *oldClient;
2352 afs_int32 viceid = 0;
2356 #if (64-MAXKTCNAMELEN)
2357 ticket name length != 64
2361 char uname[PR_MAXNAMELEN];
2362 char tcell[MAXKTCREALMLEN];
2366 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2367 if (client && client->sid == rxr_CidOf(tcon)
2368 && client->VenusEpoch == rxr_GetEpoch(tcon)
2369 && !(client->host->hostFlags & HOSTDELETED)) {
2372 h_Hold_r(client->host);
2373 if (!client->deleted && client->prfail != 2) {
2374 /* Could add shared lock on client here */
2375 /* note that we don't have to lock entry in this path to
2376 * ensure CPS is initialized, since we don't call rx_SetSpecific
2377 * until initialization is done, and we only get here if
2378 * rx_GetSpecific located the client structure.
2383 ObtainWriteLock(&client->lock); /* released at end */
2389 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
2391 ("FindClient: authenticating connection: authClass=%d\n",
2393 if (authClass == 1) {
2394 /* A bcrypt tickets, no longer supported */
2395 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
2396 viceid = AnonymousID;
2397 expTime = 0x7fffffff;
2398 } else if (authClass == 2) {
2401 /* kerberos ticket */
2402 code = rxkad_GetServerInfo(tcon, /*level */ 0, (afs_uint32 *)&expTime,
2403 tname, tinst, tcell, &kvno);
2405 ViceLog(1, ("Failed to get rxkad ticket info\n"));
2406 viceid = AnonymousID;
2407 expTime = 0x7fffffff;
2409 int ilen = strlen(tinst);
2411 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
2412 tname, tinst, tcell, expTime, kvno));
2413 strncpy(uname, tname, sizeof(uname));
2415 if (strlen(uname) + 1 + ilen >= sizeof(uname))
2418 strcat(uname, tinst);
2420 /* translate the name to a vice id */
2421 code = MapName_r(uname, tcell, &viceid);
2425 ("failed to map name=%s, cell=%s -> code=%d\n", uname,
2428 viceid = AnonymousID;
2429 expTime = 0x7fffffff;
2433 viceid = AnonymousID; /* unknown security class */
2434 expTime = 0x7fffffff;
2437 if (!client) { /* loop */
2438 host = h_GetHost_r(tcon); /* Returns with incremented refCount */
2444 /* First try to find the client structure */
2445 for (client = host->FirstClient; client; client = client->next) {
2446 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2447 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2450 ObtainWriteLock(&client->lock);
2456 /* Still no client structure - get one */
2459 if (host->hostFlags & HOSTDELETED) {
2464 /* Retry to find the client structure */
2465 for (client = host->FirstClient; client; client = client->next) {
2466 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2467 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2469 goto retryfirstclient;
2474 ObtainWriteLock(&client->lock);
2475 client->refCount = 1;
2476 client->host = host;
2477 #if FS_STATS_DETAILED
2478 client->InSameNetwork = host->InSameNetwork;
2479 #endif /* FS_STATS_DETAILED */
2480 client->ViceId = viceid;
2481 client->expTime = expTime; /* rx only */
2482 client->authClass = authClass; /* rx only */
2483 client->sid = rxr_CidOf(tcon);
2484 client->VenusEpoch = rxr_GetEpoch(tcon);
2485 client->CPS.prlist_val = NULL;
2486 client->CPS.prlist_len = 0;
2490 client->prfail = fail;
2492 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
2493 client->CPS.prlist_len = 0;
2494 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID))
2495 free(client->CPS.prlist_val);
2496 client->CPS.prlist_val = NULL;
2497 client->ViceId = viceid;
2498 client->expTime = expTime;
2500 if (viceid == ANONYMOUSID) {
2501 client->CPS.prlist_len = AnonCPS.prlist_len;
2502 client->CPS.prlist_val = AnonCPS.prlist_val;
2505 code = hpr_GetCPS(viceid, &client->CPS);
2510 ("pr_GetCPS failed(%d) for user %d, host %" AFS_PTR_FMT " (%s:%d)\n",
2511 code, viceid, client->host,
2512 afs_inet_ntoa_r(client->host->host,hoststr),
2513 ntohs(client->host->port)));
2515 /* Although ubik_Call (called by pr_GetCPS) traverses thru
2516 * all protection servers and reevaluates things if no
2517 * sync server or quorum is found we could still end up
2518 * with one of these errors. In such case we would like to
2519 * reevaluate the rpc call to find if there's cps for this
2520 * guy. We treat other errors (except network failures
2521 * ones - i.e. code < 0) as an indication that there is no
2522 * CPS for this host. Ideally we could like to deal this
2523 * problem the other way around (i.e. if code == NOCPS
2524 * ignore else retry next time) but the problem is that
2525 * there're other errors (i.e. EPERM) for which we don't
2526 * want to retry and we don't know the whole code list!
2528 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
2532 /* the disabling of system:administrators is so iffy and has so many
2533 * possible failure modes that we will disable it again */
2534 /* Turn off System:Administrator for safety
2535 * if (AL_IsAMember(SystemId, client->CPS) == 0)
2536 * osi_Assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
2539 /* Now, tcon may already be set to a rock, since we blocked with no host
2540 * or client locks set above in pr_GetCPS (XXXX some locking is probably
2541 * required). So, before setting the RPC's rock, we should disconnect
2542 * the RPC from the other client structure's rock.
2544 oldClient = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2545 if (oldClient && oldClient != client && oldClient->sid == rxr_CidOf(tcon)
2546 && oldClient->VenusEpoch == rxr_GetEpoch(tcon)) {
2548 if (!oldClient->deleted) {
2549 /* if we didn't create it, it's not ours to put back */
2551 ViceLog(0, ("FindClient: stillborn client %p(%x); "
2552 "conn %p (host %s:%d) had client %p(%x)\n",
2553 client, client->sid, tcon,
2554 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2555 ntohs(rxr_PortOf(tcon)),
2556 oldClient, oldClient->sid));
2557 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2558 free(client->CPS.prlist_val);
2559 client->CPS.prlist_val = NULL;
2560 client->CPS.prlist_len = 0;
2562 /* We should perhaps check for 0 here */
2564 ReleaseWriteLock(&client->lock);
2569 oldClient->refCount++;
2571 ObtainWriteLock(&oldClient->lock);
2575 ViceLog(0, ("FindClient: deleted client %p(%x) already had "
2576 "conn %p (host %s:%d), stolen by client %p(%x)\n",
2577 oldClient, oldClient->sid, tcon,
2578 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2579 ntohs(rxr_PortOf(tcon)),
2580 client, client->sid));
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;
2674 PutClient(struct client **cp)
2680 h_ReleaseClient_r(*cp);
2687 /* Client user name for short term use. Note that this is NOT inexpensive */
2689 h_UserName(struct client *client)
2691 static char User[PR_MAXNAMELEN + 1];
2695 lids.idlist_len = 1;
2696 lids.idlist_val = (afs_int32 *) malloc(1 * sizeof(afs_int32));
2697 if (!lids.idlist_val) {
2698 ViceLog(0, ("Failed malloc in h_UserName\n"));
2699 osi_Panic("Failed malloc in h_UserName\n");
2701 lnames.namelist_len = 0;
2702 lnames.namelist_val = (prname *) 0;
2703 lids.idlist_val[0] = client->ViceId;
2704 if (hpr_IdToName(&lids, &lnames)) {
2705 /* We need to free id we alloced above! */
2706 free(lids.idlist_val);
2707 return "*UNKNOWN USER NAME*";
2709 strncpy(User, lnames.namelist_val[0], PR_MAXNAMELEN);
2710 free(lids.idlist_val);
2711 free(lnames.namelist_val);
2720 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
2721 CEs, CEBlocks, HTs, HTBlocks));
2727 h_PrintClient(struct host *host, int flags, void *rock)
2729 StreamHandle_t *file = (StreamHandle_t *)rock;
2730 struct client *client;
2735 time_t LastCall, expTime;
2738 LastCall = host->LastCall;
2739 if (host->hostFlags & HOSTDELETED) {
2743 snprintf(tmpStr, sizeof tmpStr, "Host %s:%d down = %d, LastCall %s",
2744 afs_inet_ntoa_r(host->host, hoststr),
2745 ntohs(host->port), (host->hostFlags & VENUSDOWN),
2746 afs_ctime(&LastCall, tbuffer, sizeof(tbuffer)));
2747 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2748 for (client = host->FirstClient; client; client = client->next) {
2749 if (!client->deleted) {
2750 expTime = client->expTime;
2751 snprintf(tmpStr, sizeof tmpStr,
2752 " user id=%d, name=%s, sl=%s till %s",
2753 client->ViceId, h_UserName(client),
2754 client->authClass ? "Authenticated"
2755 : "Not authenticated",
2756 client->authClass ? afs_ctime(&expTime, tbuffer,
2759 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2760 snprintf(tmpStr, sizeof tmpStr, " CPS-%d is [",
2761 client->CPS.prlist_len);
2762 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2763 if (client->CPS.prlist_val) {
2764 for (i = 0; i < client->CPS.prlist_len; i++) {
2765 snprintf(tmpStr, sizeof tmpStr, " %d",
2766 client->CPS.prlist_val[i]);
2767 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2770 sprintf(tmpStr, "]\n");
2771 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2777 } /*h_PrintClient */
2782 * Print a list of clients, with last security level and token value seen,
2786 h_PrintClients(void)
2792 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
2796 ("Couldn't create client dump file %s\n",
2797 AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2800 now = FT_ApproxTime();
2801 snprintf(tmpStr, sizeof tmpStr, "List of active users at %s\n",
2802 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
2803 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2804 h_Enumerate(h_PrintClient, (char *)file);
2805 STREAM_REALLYCLOSE(file);
2806 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2813 h_DumpHost(struct host *host, int flags, void *rock)
2815 StreamHandle_t *file = (StreamHandle_t *)rock;
2822 snprintf(tmpStr, sizeof tmpStr,
2823 "ip:%s port:%d hidx:%d cbid:%d lock:%x last:%u active:%u "
2824 "down:%d del:%d cons:%d cldel:%d\n\t hpfailed:%d hcpsCall:%u "
2826 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
2827 host->index, host->cblist, CheckLock(&host->lock),
2828 host->LastCall, host->ActiveCall, (host->hostFlags & VENUSDOWN),
2829 host->hostFlags & HOSTDELETED, host->Console,
2830 host->hostFlags & CLIENTDELETED, host->hcpsfailed,
2832 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2833 if (host->hcps.prlist_val)
2834 for (i = 0; i < host->hcps.prlist_len; i++) {
2835 snprintf(tmpStr, sizeof tmpStr, " %d", host->hcps.prlist_val[i]);
2836 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2838 sprintf(tmpStr, "] [");
2839 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2840 if (host->interface)
2841 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
2843 sprintf(tmpStr, " %s:%d",
2844 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
2845 ntohs(host->interface->interface[i].port));
2846 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2848 sprintf(tmpStr, "] refCount:%d hostFlags:%hu\n", host->refCount, host->hostFlags);
2849 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2861 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
2867 ("Couldn't create host dump file %s\n",
2868 AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2871 now = FT_ApproxTime();
2872 snprintf(tmpStr, sizeof tmpStr, "List of active hosts at %s\n",
2873 afs_ctime(&now, tbuffer, sizeof(tbuffer)));
2874 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2875 h_Enumerate(h_DumpHost, (char *)file);
2876 STREAM_REALLYCLOSE(file);
2877 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2881 #ifdef AFS_DEMAND_ATTACH_FS
2884 * host state serialization
2886 static int h_stateFillHeader(struct host_state_header * hdr);
2887 static int h_stateCheckHeader(struct host_state_header * hdr);
2888 static int h_stateAllocMap(struct fs_dump_state * state);
2889 static int h_stateSaveHost(struct host * host, int flags, void *rock);
2890 static int h_stateRestoreHost(struct fs_dump_state * state);
2891 static int h_stateRestoreIndex(struct host * h, int flags, void *rock);
2892 static int h_stateVerifyHost(struct host * h, int flags, void *rock);
2893 static int h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h,
2894 afs_uint32 addr, afs_uint16 port, int valid);
2895 static int h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h);
2896 static void h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out);
2897 static void h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out);
2900 /* this procedure saves all host state to disk for fast startup */
2902 h_stateSave(struct fs_dump_state * state)
2904 AssignInt64(state->eof_offset, &state->hdr->h_offset);
2907 ViceLog(0, ("h_stateSave: hostCount=%d\n", hostCount));
2909 /* invalidate host state header */
2910 memset(state->h_hdr, 0, sizeof(struct host_state_header));
2912 if (fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2913 sizeof(struct host_state_header))) {
2918 fs_stateIncEOF(state, sizeof(struct host_state_header));
2920 h_Enumerate_r(h_stateSaveHost, hostList, (char *)state);
2925 h_stateFillHeader(state->h_hdr);
2927 /* write the real header to disk */
2928 state->bail = fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2929 sizeof(struct host_state_header));
2936 * host state serialization
2938 * this procedure restores all host state from a disk for fast startup
2941 h_stateRestore(struct fs_dump_state * state)
2945 /* seek to the right position and read in the host state header */
2946 if (fs_stateReadHeader(state, &state->hdr->h_offset, state->h_hdr,
2947 sizeof(struct host_state_header))) {
2952 /* check the validity of the header */
2953 if (h_stateCheckHeader(state->h_hdr)) {
2958 records = state->h_hdr->records;
2960 if (h_stateAllocMap(state)) {
2965 /* iterate over records restoring host state */
2966 for (i=0; i < records; i++) {
2967 if (h_stateRestoreHost(state) != 0) {
2978 h_stateRestoreIndices(struct fs_dump_state * state)
2980 h_Enumerate_r(h_stateRestoreIndex, hostList, (char *)state);
2985 h_stateRestoreIndex(struct host * h, int flags, void *rock)
2987 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2988 if (cb_OldToNew(state, h->cblist, &h->cblist)) {
2989 return H_ENUMERATE_BAIL(flags);
2995 h_stateVerify(struct fs_dump_state * state)
2997 h_Enumerate_r(h_stateVerifyHost, hostList, (char *)state);
3002 h_stateVerifyHost(struct host * h, int flags, void* rock)
3004 struct fs_dump_state *state = (struct fs_dump_state *)rock;
3008 ViceLog(0, ("h_stateVerifyHost: error: NULL host pointer in linked list\n"));
3009 return H_ENUMERATE_BAIL(flags);
3013 for (i = h->interface->numberOfInterfaces-1; i >= 0; i--) {
3014 if (h_stateVerifyAddrHash(state, h, h->interface->interface[i].addr,
3015 h->interface->interface[i].port,
3016 h->interface->interface[i].valid)) {
3020 if (h_stateVerifyUuidHash(state, h)) {
3023 } else if (h_stateVerifyAddrHash(state, h, h->host, h->port, 1)) {
3027 if (cb_stateVerifyHCBList(state, h)) {
3035 * verify a host is either in, or absent from, the addr hash table.
3037 * @param[in] state fs dump state
3038 * @param[in] h host we're dealing with
3039 * @param[in] addr addr to look for (NBO)
3040 * @param[in] port port to look for (NBO)
3041 * @param[in] valid 1 if we're verifying that the specified addr and port
3042 * in the hash table point to the specified host. 0 if we're
3043 * verifying that the specified addr and port do NOT point
3044 * to the specified host
3046 * @return operation status
3047 * @retval 1 failed to verify, bail out
3048 * @retval 0 verified successfully, all is well
3051 h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h,
3052 afs_uint32 addr, afs_uint16 port, int valid)
3054 int ret = 0, found = 0;
3055 struct host *host = NULL;
3056 struct h_AddrHashChain *chain;
3057 int index = h_HashIndex(addr);
3061 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
3062 host = chain->hostPtr;
3064 afs_inet_ntoa_r(addr, tmp);
3065 ViceLog(0, ("h_stateVerifyAddrHash: error: addr hash chain has NULL host ptr (lookup addr %s)\n", tmp));
3069 if ((chain->addr == addr) && (chain->port == port)) {
3072 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr hash entry "
3073 "points to different host struct (%d, %d)\n",
3074 h->index, host->index));
3075 state->flags.warnings_generated = 1;
3079 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s:%u is "
3080 "marked invalid, but points to the containing "
3081 "host\n", afs_inet_ntoa_r(addr, tmp),
3082 (unsigned)htons(port)));
3090 if (chain_len > FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN) {
3091 ViceLog(0, ("h_stateVerifyAddrHash: error: hash chain length exceeds %d; assuming there's a loop\n",
3092 FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN));
3099 if (!found && valid) {
3100 afs_inet_ntoa_r(addr, tmp);
3101 if (state->mode == FS_STATE_LOAD_MODE) {
3102 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s:%u not found in hash\n",
3103 tmp, (unsigned)htons(port)));
3107 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr %s:%u not found in hash\n",
3108 tmp, (unsigned)htons(port)));
3109 state->flags.warnings_generated = 1;
3118 h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h)
3120 int ret = 0, found = 0;
3121 struct host *host = NULL;
3122 struct h_UuidHashChain *chain;
3123 afsUUID * uuidp = &h->interface->uuid;
3124 int index = h_UuidHashIndex(uuidp);
3128 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
3129 host = chain->hostPtr;
3131 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
3132 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid hash chain has NULL host ptr (lookup uuid %s)\n", tmp));
3136 if (host->interface &&
3137 afs_uuid_equal(&host->interface->uuid, uuidp)) {
3139 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid hash entry points to different host struct (%d, %d)\n",
3140 h->index, host->index));
3141 state->flags.warnings_generated = 1;
3146 if (chain_len > FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN) {
3147 ViceLog(0, ("h_stateVerifyUuidHash: error: hash chain length exceeds %d; assuming there's a loop\n",
3148 FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN));
3156 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
3157 if (state->mode == FS_STATE_LOAD_MODE) {
3158 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid %s not found in hash\n", tmp));
3162 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid %s not found in hash\n", tmp));
3163 state->flags.warnings_generated = 1;
3171 /* create the host state header structure */
3173 h_stateFillHeader(struct host_state_header * hdr)
3175 hdr->stamp.magic = HOST_STATE_MAGIC;
3176 hdr->stamp.version = HOST_STATE_VERSION;
3180 /* check the contents of the host state header structure */
3182 h_stateCheckHeader(struct host_state_header * hdr)
3186 if (hdr->stamp.magic != HOST_STATE_MAGIC) {
3187 ViceLog(0, ("check_host_state_header: invalid state header\n"));
3190 else if (hdr->stamp.version != HOST_STATE_VERSION) {
3191 ViceLog(0, ("check_host_state_header: unknown version number\n"));
3197 /* allocate the host id mapping table */
3199 h_stateAllocMap(struct fs_dump_state * state)
3201 state->h_map.len = state->h_hdr->index_max + 1;
3202 state->h_map.entries = (struct idx_map_entry_t *)
3203 calloc(state->h_map.len, sizeof(struct idx_map_entry_t));
3204 return (state->h_map.entries != NULL) ? 0 : 1;
3207 /* function called by h_Enumerate to save a host to disk */
3209 h_stateSaveHost(struct host * host, int flags, void* rock)
3211 struct fs_dump_state *state = (struct fs_dump_state *) rock;
3212 int if_len=0, hcps_len=0;
3213 struct hostDiskEntry hdsk;
3214 struct host_state_entry_header hdr;
3215 struct Interface * ifp = NULL;
3216 afs_int32 * hcps = NULL;
3217 struct iovec iov[4];
3220 memset(&hdr, 0, sizeof(hdr));
3222 if (state->h_hdr->index_max < host->index) {
3223 state->h_hdr->index_max = host->index;
3226 h_hostToDiskEntry_r(host, &hdsk);
3227 if (host->interface) {
3228 if_len = sizeof(struct Interface) +
3229 ((host->interface->numberOfInterfaces-1) * sizeof(struct AddrPort));
3230 ifp = (struct Interface *) malloc(if_len);
3231 osi_Assert(ifp != NULL);
3232 memcpy(ifp, host->interface, if_len);
3233 hdr.interfaces = host->interface->numberOfInterfaces;
3234 iov[iovcnt].iov_base = (char *) ifp;
3235 iov[iovcnt].iov_len = if_len;
3238 if (host->hcps.prlist_val) {
3239 hdr.hcps = host->hcps.prlist_len;
3240 hcps_len = hdr.hcps * sizeof(afs_int32);
3241 hcps = (afs_int32 *) malloc(hcps_len);
3242 osi_Assert(hcps != NULL);
3243 memcpy(hcps, host->hcps.prlist_val, hcps_len);
3244 iov[iovcnt].iov_base = (char *) hcps;
3245 iov[iovcnt].iov_len = hcps_len;
3249 if (hdsk.index > state->h_hdr->index_max)
3250 state->h_hdr->index_max = hdsk.index;
3252 hdr.len = sizeof(struct host_state_entry_header) +
3253 sizeof(struct hostDiskEntry) + if_len + hcps_len;
3254 hdr.magic = HOST_STATE_ENTRY_MAGIC;
3256 iov[0].iov_base = (char *) &hdr;
3257 iov[0].iov_len = sizeof(hdr);
3258 iov[1].iov_base = (char *) &hdsk;
3259 iov[1].iov_len = sizeof(struct hostDiskEntry);
3261 if (fs_stateWriteV(state, iov, iovcnt)) {
3262 ViceLog(0, ("h_stateSaveHost: failed to save host %d", host->index));
3266 fs_stateIncEOF(state, hdr.len);
3268 state->h_hdr->records++;
3275 return H_ENUMERATE_BAIL(flags);
3280 /* restores a host from disk */
3282 h_stateRestoreHost(struct fs_dump_state * state)
3284 int ifp_len=0, hcps_len=0, bail=0;
3285 struct host_state_entry_header hdr;
3286 struct hostDiskEntry hdsk;
3287 struct host *host = NULL;
3288 struct Interface *ifp = NULL;
3289 afs_int32 * hcps = NULL;
3290 struct iovec iov[3];
3293 if (fs_stateRead(state, &hdr, sizeof(hdr))) {
3294 ViceLog(0, ("h_stateRestoreHost: failed to read host entry header from dump file '%s'\n",
3300 if (hdr.magic != HOST_STATE_ENTRY_MAGIC) {
3301 ViceLog(0, ("h_stateRestoreHost: fileserver state dump file '%s' is corrupt.\n",
3307 iov[0].iov_base = (char *) &hdsk;
3308 iov[0].iov_len = sizeof(struct hostDiskEntry);
3310 if (hdr.interfaces) {
3311 ifp_len = sizeof(struct Interface) +
3312 ((hdr.interfaces-1) * sizeof(struct AddrPort));
3313 ifp = (struct Interface *) malloc(ifp_len);
3314 osi_Assert(ifp != NULL);
3315 iov[iovcnt].iov_base = (char *) ifp;
3316 iov[iovcnt].iov_len = ifp_len;
3320 hcps_len = hdr.hcps * sizeof(afs_int32);
3321 hcps = (afs_int32 *) malloc(hcps_len);
3322 osi_Assert(hcps != NULL);
3323 iov[iovcnt].iov_base = (char *) hcps;
3324 iov[iovcnt].iov_len = hcps_len;
3328 if ((ifp_len + hcps_len + sizeof(hdsk) + sizeof(hdr)) != hdr.len) {
3329 ViceLog(0, ("h_stateRestoreHost: host entry header length fields are inconsistent\n"));
3334 if (fs_stateReadV(state, iov, iovcnt)) {
3335 ViceLog(0, ("h_stateRestoreHost: failed to read host entry\n"));
3340 if (!hdr.hcps && hdsk.hcps_valid) {
3341 /* valid, zero-length host cps ; does this ever happen? */
3342 hcps = (afs_int32 *) malloc(sizeof(afs_int32));
3343 osi_Assert(hcps != NULL);
3347 osi_Assert(host != NULL);
3350 host->interface = ifp;
3353 host->hcps.prlist_val = hcps;
3354 host->hcps.prlist_len = hdr.hcps;
3357 h_diskEntryToHost_r(&hdsk, host);
3358 h_SetupCallbackConn_r(host);
3360 h_AddHostToAddrHashTable_r(host->host, host->port, host);
3363 for (i = ifp->numberOfInterfaces-1; i >= 0; i--) {
3364 if (ifp->interface[i].valid &&
3365 !(ifp->interface[i].addr == host->host &&
3366 ifp->interface[i].port == host->port)) {
3367 h_AddHostToAddrHashTable_r(ifp->interface[i].addr,
3368 ifp->interface[i].port,
3372 h_AddHostToUuidHashTable_r(&ifp->uuid, host);
3374 h_InsertList_r(host);
3376 /* setup host id map entry */
3377 state->h_map.entries[hdsk.index].old_idx = hdsk.index;
3378 state->h_map.entries[hdsk.index].new_idx = host->index;
3390 /* serialize a host structure to disk */
3392 h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out)
3394 out->host = in->host;
3395 out->port = in->port;
3396 out->hostFlags = in->hostFlags;
3397 out->Console = in->Console;
3398 out->hcpsfailed = in->hcpsfailed;
3399 out->LastCall = in->LastCall;
3400 out->ActiveCall = in->ActiveCall;
3401 out->cpsCall = in->cpsCall;
3402 out->cblist = in->cblist;
3403 #ifdef FS_STATS_DETAILED
3404 out->InSameNetwork = in->InSameNetwork;
3407 /* special fields we save, but are not memcpy'd back on restore */
3408 out->index = in->index;
3409 out->hcps_len = in->hcps.prlist_len;
3410 out->hcps_valid = (in->hcps.prlist_val == NULL) ? 0 : 1;
3413 /* restore a host structure from disk */
3415 h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out)
3417 out->host = in->host;
3418 out->port = in->port;
3419 out->hostFlags = in->hostFlags;
3420 out->Console = in->Console;
3421 out->hcpsfailed = in->hcpsfailed;
3422 out->LastCall = in->LastCall;
3423 out->ActiveCall = in->ActiveCall;
3424 out->cpsCall = in->cpsCall;
3425 out->cblist = in->cblist;
3426 #ifdef FS_STATS_DETAILED
3427 out->InSameNetwork = in->InSameNetwork;
3431 /* index translation routines */
3433 h_OldToNew(struct fs_dump_state * state, afs_uint32 old, afs_uint32 * new)
3437 /* hosts use a zero-based index, so old==0 is valid */
3439 if (old >= state->h_map.len) {
3440 ViceLog(0, ("h_OldToNew: index %d is out of range\n", old));
3442 } else if (state->h_map.entries[old].old_idx != old) { /* sanity check */
3443 ViceLog(0, ("h_OldToNew: index %d points to an invalid host record\n", old));
3446 *new = state->h_map.entries[old].new_idx;
3451 #endif /* AFS_DEMAND_ATTACH_FS */
3455 * This counts the number of workstations, the number of active workstations,
3456 * and the number of workstations declared "down" (i.e. not heard from
3457 * recently). An active workstation has received a call since the cutoff
3458 * time argument passed.
3461 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
3464 int num = 0, active = 0, del = 0;
3468 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
3469 if (!(host->hostFlags & HOSTDELETED)) {
3471 if (host->ActiveCall > cutofftime)
3473 if (host->hostFlags & VENUSDOWN)
3477 if (count != hostCount) {
3478 ViceLog(0, ("h_GetWorkStats found %d of %d hosts\n", count, hostCount));
3479 } else if (host != NULL) {
3480 ViceLog(0, ("h_GetWorkStats found more than %d hosts\n", hostCount));
3481 ShutDownAndCore(PANIC);
3491 } /*h_GetWorkStats */
3494 h_GetWorkStats64(afs_uint64 *nump, afs_uint64 *activep, afs_uint64 *delp,
3495 afs_int32 cutofftime)
3497 int num, active, del;
3498 h_GetWorkStats(&num, &active, &del, cutofftime);
3507 /*------------------------------------------------------------------------
3508 * PRIVATE h_ClassifyAddress
3511 * Given a target IP address and a candidate IP address (both
3512 * in host byte order), classify the candidate into one of three
3513 * buckets in relation to the target by bumping the counters passed
3517 * a_targetAddr : Target address.
3518 * a_candAddr : Candidate address.
3519 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
3520 * addresses are either in the same network
3521 * or the same subnet.
3522 * a_diffSubnetP : ...when the candidate is in a different
3524 * a_diffNetworkP : ...when the candidate is in a different
3531 * The target and candidate addresses are both in host byte
3532 * order, NOT network byte order, when passed in.
3536 *------------------------------------------------------------------------*/
3539 h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
3540 afs_int32 * a_sameNetOrSubnetP, afs_int32 * a_diffSubnetP,
3541 afs_int32 * a_diffNetworkP)
3542 { /*h_ClassifyAddress */
3544 afs_uint32 targetNet;
3545 afs_uint32 targetSubnet;
3547 afs_uint32 candSubnet;
3550 * Put bad values into the subnet info to start with.
3552 targetSubnet = (afs_uint32) 0;
3553 candSubnet = (afs_uint32) 0;
3556 * Pull out the network and subnetwork numbers from the target
3557 * and candidate addresses. We can short-circuit this whole
3558 * affair if the target and candidate addresses are not of the
3561 if (IN_CLASSA(a_targetAddr)) {
3562 if (!(IN_CLASSA(a_candAddr))) {
3563 (*a_diffNetworkP)++;
3566 targetNet = a_targetAddr & IN_CLASSA_NET;
3567 candNet = a_candAddr & IN_CLASSA_NET;
3568 if (IN_SUBNETA(a_targetAddr))
3569 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
3570 if (IN_SUBNETA(a_candAddr))
3571 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
3572 } else if (IN_CLASSB(a_targetAddr)) {
3573 if (!(IN_CLASSB(a_candAddr))) {
3574 (*a_diffNetworkP)++;
3577 targetNet = a_targetAddr & IN_CLASSB_NET;
3578 candNet = a_candAddr & IN_CLASSB_NET;
3579 if (IN_SUBNETB(a_targetAddr))
3580 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
3581 if (IN_SUBNETB(a_candAddr))
3582 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
3583 } /*Class B target */
3584 else if (IN_CLASSC(a_targetAddr)) {
3585 if (!(IN_CLASSC(a_candAddr))) {
3586 (*a_diffNetworkP)++;
3589 targetNet = a_targetAddr & IN_CLASSC_NET;
3590 candNet = a_candAddr & IN_CLASSC_NET;
3593 * Note that class C addresses can't have subnets,
3594 * so we leave the defaults untouched.
3596 } /*Class C target */
3598 targetNet = a_targetAddr;
3599 candNet = a_candAddr;
3600 } /*Class D address */
3603 * Now, simply compare the extracted net and subnet values for
3604 * the two addresses (which at this point are known to be of the
3607 if (targetNet == candNet) {
3608 if (targetSubnet == candSubnet)
3609 (*a_sameNetOrSubnetP)++;
3613 (*a_diffNetworkP)++;
3615 } /*h_ClassifyAddress */
3618 /*------------------------------------------------------------------------
3619 * EXPORTED h_GetHostNetStats
3622 * Iterate through the host table, and classify each (non-deleted)
3623 * host entry into ``proximity'' categories (same net or subnet,
3624 * different subnet, different network).
3627 * a_numHostsP : Set to total number of (non-deleted) hosts.
3628 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
3629 * a_diffSubnetP : Set to # hosts on diff subnet as server.
3630 * a_diffNetworkP : Set to # hosts on diff network as server.
3636 * We only count non-deleted hosts. The storage pointed to by our
3637 * parameters is zeroed upon entry.
3641 *------------------------------------------------------------------------*/
3644 h_GetHostNetStats(afs_int32 * a_numHostsP, afs_int32 * a_sameNetOrSubnetP,
3645 afs_int32 * a_diffSubnetP, afs_int32 * a_diffNetworkP)
3646 { /*h_GetHostNetStats */
3648 struct host *hostP; /*Ptr to current host entry */
3649 afs_uint32 currAddr_HBO; /*Curr host addr, host byte order */
3653 * Clear out the storage pointed to by our parameters.
3655 *a_numHostsP = (afs_int32) 0;
3656 *a_sameNetOrSubnetP = (afs_int32) 0;
3657 *a_diffSubnetP = (afs_int32) 0;
3658 *a_diffNetworkP = (afs_int32) 0;
3661 for (count = 0, hostP = hostList; hostP && count < hostCount; hostP = hostP->next, count++) {
3662 if (!(hostP->hostFlags & HOSTDELETED)) {
3664 * Bump the number of undeleted host entries found.
3665 * In classifying the current entry's address, make
3666 * sure to first convert to host byte order.
3669 currAddr_HBO = (afs_uint32) ntohl(hostP->host);
3670 h_ClassifyAddress(FS_HostAddr_HBO, currAddr_HBO,
3671 a_sameNetOrSubnetP, a_diffSubnetP,
3673 } /*Only look at non-deleted hosts */
3674 } /*For each host record hashed to this index */
3675 if (count != hostCount) {
3676 ViceLog(0, ("h_GetHostNetStats found %d of %d hosts\n", count, hostCount));
3677 } else if (hostP != NULL) {
3678 ViceLog(0, ("h_GetHostNetStats found more than %d hosts\n", hostCount));
3679 ShutDownAndCore(PANIC);
3682 } /*h_GetHostNetStats */
3684 static afs_uint32 checktime;
3685 static afs_uint32 clientdeletetime;
3686 static struct AFSFid zerofid;
3690 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
3691 * Since it can serialize them, and pile up, it should be a separate LWP
3692 * from other events.
3696 CheckHost(struct host *host, int flags, void *rock)
3698 struct client *client;
3699 struct rx_connection *cb_conn = NULL;
3702 #ifdef AFS_DEMAND_ATTACH_FS
3703 /* kill the checkhost lwp ASAP during shutdown */
3705 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3707 return H_ENUMERATE_BAIL(flags);
3712 /* Host is held by h_Enumerate */
3714 for (client = host->FirstClient; client; client = client->next) {
3715 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3716 client->deleted = 1;
3717 host->hostFlags |= CLIENTDELETED;
3720 if (host->LastCall < checktime) {
3722 if (!(host->hostFlags & HOSTDELETED)) {
3723 host->hostFlags |= HWHO_INPROGRESS;
3724 cb_conn = host->callback_rxcon;
3725 rx_GetConnection(cb_conn);
3726 if (host->LastCall < clientdeletetime) {
3727 host->hostFlags |= HOSTDELETED;
3728 if (!(host->hostFlags & VENUSDOWN)) {
3729 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3730 if (host->interface) {
3733 RXAFSCB_InitCallBackState3(cb_conn,
3739 RXAFSCB_InitCallBackState(cb_conn);
3742 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3745 (void)afs_inet_ntoa_r(host->host, hoststr);
3747 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3748 hoststr, ntohs(host->port)));
3749 host->hostFlags |= VENUSDOWN;
3751 /* Note: it's safe to delete hosts even if they have call
3752 * back state, because break delayed callbacks (called when a
3753 * message is received from the workstation) will always send a
3754 * break all call backs to the workstation if there is no
3759 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3761 (void)afs_inet_ntoa_r(host->host, hoststr);
3762 if (host->interface) {
3763 afsUUID uuid = host->interface->uuid;
3765 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3768 if (MultiProbeAlternateAddress_r(host)) {
3769 ViceLog(0,("CheckHost: Probing all interfaces of host %s:%d failed, code %d\n",
3770 hoststr, ntohs(host->port), code));
3771 host->hostFlags |= VENUSDOWN;
3776 code = RXAFSCB_Probe(cb_conn);
3780 ("CheckHost: Probe failed for host %s:%d, code %d\n",
3781 hoststr, ntohs(host->port), code));
3782 host->hostFlags |= VENUSDOWN;
3788 rx_PutConnection(cb_conn);
3791 host->hostFlags &= ~HWHO_INPROGRESS;
3802 CheckHost_r(struct host *host, int flags, void *dummy)
3804 struct client *client;
3805 struct rx_connection *cb_conn = NULL;
3808 #ifdef AFS_DEMAND_ATTACH_FS
3809 /* kill the checkhost lwp ASAP during shutdown */
3811 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3813 return H_ENUMERATE_BAIL(flags);
3818 /* Host is held by h_Enumerate_r */
3819 for (client = host->FirstClient; client; client = client->next) {
3820 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3821 client->deleted = 1;
3822 host->hostFlags |= CLIENTDELETED;
3825 if (host->LastCall < checktime) {
3827 if (!(host->hostFlags & HOSTDELETED)) {
3828 host->hostFlags |= HWHO_INPROGRESS;
3829 cb_conn = host->callback_rxcon;
3830 rx_GetConnection(cb_conn);
3831 if (host->LastCall < clientdeletetime) {
3832 host->hostFlags |= HOSTDELETED;
3833 if (!(host->hostFlags & VENUSDOWN)) {
3834 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3835 if (host->interface) {
3838 RXAFSCB_InitCallBackState3(cb_conn,
3844 RXAFSCB_InitCallBackState(cb_conn);
3847 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3850 (void)afs_inet_ntoa_r(host->host, hoststr);
3852 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3853 hoststr, ntohs(host->port)));
3854 host->hostFlags |= VENUSDOWN;
3856 /* Note: it's safe to delete hosts even if they have call
3857 * back state, because break delayed callbacks (called when a
3858 * message is received from the workstation) will always send a
3859 * break all call backs to the workstation if there is no
3864 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3866 (void)afs_inet_ntoa_r(host->host, hoststr);
3867 if (host->interface) {
3868 afsUUID uuid = host->interface->uuid;
3870 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3873 if (MultiProbeAlternateAddress_r(host)) {
3874 ViceLog(0,("CheckHost_r: Probing all interfaces of host %s:%d failed, code %d\n",
3875 hoststr, ntohs(host->port), code));
3876 host->hostFlags |= VENUSDOWN;
3881 code = RXAFSCB_Probe(cb_conn);
3885 ("CheckHost_r: Probe failed for host %s:%d, code %d\n",
3886 hoststr, ntohs(host->port), code));
3887 host->hostFlags |= VENUSDOWN;
3893 rx_PutConnection(cb_conn);
3896 host->hostFlags &= ~HWHO_INPROGRESS;
3906 * Set VenusDown for any hosts that have not had a call in 15 minutes and
3907 * don't respond to a probe. Note that VenusDown can only be cleared if
3908 * a message is received from the host (see ServerLWP in file.c).
3909 * Delete hosts that have not had any calls in 1 hour, clients that
3910 * have not had any calls in 15 minutes.
3912 * This routine is called roughly every 5 minutes.
3917 afs_uint32 now = FT_ApproxTime();
3919 memset(&zerofid, 0, sizeof(zerofid));
3921 * Send a probe to the workstation if it hasn't been heard from in
3924 checktime = now - 15 * 60;
3925 clientdeletetime = now - 120 * 60; /* 2 hours ago */
3928 h_Enumerate_r(CheckHost_r, hostList, NULL);
3933 * This is called with host locked and held. At this point, the
3934 * hostAddrHashTable has an entry for the primary addr/port inserted
3935 * by h_Alloc_r(). No other interfaces should be considered valid.
3937 * The addresses in the interfaceAddr list are in host byte order.
3940 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
3947 struct Interface *interface;
3950 afs_uint16 port7001 = htons(7001);
3955 number = interf->numberOfInterfaces;
3956 myAddr = host->host; /* current interface address */
3957 myPort = host->port; /* current port */
3960 ("initInterfaceAddr : host %s:%d numAddr %d\n",
3961 afs_inet_ntoa_r(myAddr, hoststr), ntohs(myPort), number));
3963 /* validation checks */
3964 if (number < 0 || number > AFS_MAX_INTERFACE_ADDR) {
3966 ("Invalid number of alternate addresses is %d\n", number));
3971 * The client's notion of its own IP addresses is not reliable.
3973 * 1. The client list might contain private address ranges which
3974 * are likely to be re-used by many clients allocated addresses
3977 * 2. The client list will not include any public addresses that
3978 * are hidden by a NAT.
3980 * 3. Private address ranges that are exposed to the server will
3981 * be obtained from the rx connections that use them.
3983 * 4. Lists provided by the client are not necessarily truthful.
3984 * Many existing clients (UNIX) do not refresh the IP address
3985 * list as the actual assigned addresses change. The end result
3986 * is that they report the initial address list for the lifetime
3987 * of the process. In other words, a client can report addresses
3988 * that they are in fact not using. Adding these addresses to
3989 * the host interface list without verification is not only
3990 * pointless, it is downright dangerous.
3992 * We therefore do not add alternate addresses to the addr hash table.
3993 * We only use them for multi-rx callback breaks.
3997 * Convert IP addresses to network byte order, and remove
3998 * duplicate IP addresses from the interface list, and
3999 * determine whether or not the incoming addr/port is
4000 * listed. Note that if the address matches it is not
4001 * truly a match because the port number for the entries
4002 * in the interface list are port 7001 and the port number
4003 * for this connection might not be 7001.
4005 for (i = 0, count = 0, found = 0; i < number; i++) {
4006 interf->addr_in[i] = htonl(interf->addr_in[i]);
4007 for (j = 0; j < count; j++) {
4008 if (interf->addr_in[j] == interf->addr_in[i])
4012 interf->addr_in[count] = interf->addr_in[i];
4013 if (interf->addr_in[count] == myAddr &&
4021 * Allocate and initialize an interface structure for this host.
4024 interface = (struct Interface *)
4025 malloc(sizeof(struct Interface) +
4026 (sizeof(struct AddrPort) * (count - 1)));
4028 ViceLog(0, ("Failed malloc in initInterfaceAddr_r 1\n"));
4029 osi_Panic("Failed malloc in initInterfaceAddr_r 1\n");
4031 interface->numberOfInterfaces = count;
4033 interface = (struct Interface *)
4034 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * count));
4036 ViceLog(0, ("Failed malloc in initInterfaceAddr_r 2\n"));
4037 osi_Panic("Failed malloc in initInterfaceAddr_r 2\n");
4039 interface->numberOfInterfaces = count + 1;
4040 interface->interface[count].addr = myAddr;
4041 interface->interface[count].port = myPort;
4042 interface->interface[count].valid = 1;
4045 for (i = 0; i < count; i++) {
4047 interface->interface[i].addr = interf->addr_in[i];
4048 /* We store the port as 7001 because the addresses reported by
4049 * TellMeAboutYourself and WhoAreYou RPCs are only valid if they
4050 * are coming from fully connected hosts (no NAT/PATs)
4052 interface->interface[i].port = port7001;
4053 interface->interface[i].valid =
4054 (interf->addr_in[i] == myAddr && port7001 == myPort) ? 1 : 0;
4057 interface->uuid = interf->uuid;
4059 osi_Assert(!host->interface);
4060 host->interface = interface;
4062 if (LogLevel >= 125) {
4063 afsUUID_to_string(&interface->uuid, uuidstr, 127);
4065 ViceLog(125, ("--- uuid %s\n", uuidstr));
4066 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
4067 ViceLog(125, ("--- alt address %s:%d\n",
4068 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
4069 ntohs(host->interface->interface[i].port)));
4076 /* deleted a HashChain structure for this address and host */
4077 /* returns 1 on success */
4079 h_DeleteHostFromAddrHashTable_r(afs_uint32 addr, afs_uint16 port,
4083 struct h_AddrHashChain **hp, *th;
4085 if (addr == 0 && port == 0)
4088 for (hp = &hostAddrHashTable[h_HashIndex(addr)]; (th = *hp);
4090 osi_Assert(th->hostPtr);
4091 if (th->hostPtr == host && th->addr == addr && th->port == port) {
4092 ViceLog(125, ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d)\n",
4093 host, afs_inet_ntoa_r(host->host, hoststr),
4094 ntohs(host->port)));
4101 ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) not found\n",
4102 host, afs_inet_ntoa_r(host->host, hoststr),
4103 ntohs(host->port)));
4109 ** prints out all alternate interface address for the host. The 'level'
4110 ** parameter indicates what level of debugging sets this output
4113 printInterfaceAddr(struct host *host, int level)
4118 if (host->interface) {
4119 /* check alternate addresses */
4120 number = host->interface->numberOfInterfaces;
4122 ViceLog(level, ("no-addresses "));
4124 for (i = 0; i < number; i++)
4125 ViceLog(level, ("%s:%d ", afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
4126 ntohs(host->interface->interface[i].port)));
4129 ViceLog(level, ("\n"));