2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
9 * Portions Copyright (c) 2006 Sine Nomine Associates
12 #include <afsconfig.h>
13 #include <afs/param.h>
18 #ifdef HAVE_SYS_FILE_H
23 #include <afs/afs_assert.h>
26 #include <afs/afsint.h>
27 #define FSINT_COMMON_XG
28 #include <afs/afscbint.h>
29 #include <afs/rxgen_consts.h>
31 #include <afs/errors.h>
32 #include <afs/ihandle.h>
33 #include <afs/vnode.h>
34 #include <afs/volume.h>
35 #ifdef AFS_ATHENA_STDENV
39 #include <afs/ptclient.h>
40 #include <afs/ptuser.h>
41 #include <afs/prs_fs.h>
43 #include <afs/afsutil.h>
44 #include <afs/com_err.h>
46 #include <afs/cellconfig.h>
47 #include "viced_prototypes.h"
51 #ifdef AFS_DEMAND_ATTACH_FS
52 #include "../util/afsutil_prototypes.h"
53 #include "../tviced/serialize_state.h"
54 #endif /* AFS_DEMAND_ATTACH_FS */
56 #ifdef AFS_PTHREAD_ENV
57 pthread_mutex_t host_glock_mutex;
58 #endif /* AFS_PTHREAD_ENV */
61 extern int CurrentConnections;
63 extern int AnonymousID;
64 extern prlist AnonCPS;
66 extern struct afsconf_dir *confDir; /* config dir object */
67 extern int lwps; /* the max number of server threads */
68 extern afsUUID FS_HostUUID;
71 int CEs = 0; /* active clients */
72 int CEBlocks = 0; /* number of blocks of CEs */
73 struct client *CEFree = 0; /* first free client */
74 struct host *hostList = 0; /* linked list of all hosts */
75 int hostCount = 0; /* number of hosts in hostList */
79 static struct rx_securityClass *sc = NULL;
81 static void h_SetupCallbackConn_r(struct host * host);
82 static int h_threadquota(int);
84 #define CESPERBLOCK 73
85 struct CEBlock { /* block of CESPERBLOCK file entries */
86 struct client entry[CESPERBLOCK];
89 void h_TossStuff_r(struct host *host);
92 * Make sure the subnet macros have been defined.
95 #define IN_SUBNETA(i) ((((afs_int32)(i))&0x80800000)==0x00800000)
98 #ifndef IN_CLASSA_SUBNET
99 #define IN_CLASSA_SUBNET 0xffff0000
103 #define IN_SUBNETB(i) ((((afs_int32)(i))&0xc0008000)==0x80008000)
106 #ifndef IN_CLASSB_SUBNET
107 #define IN_CLASSB_SUBNET 0xffffff00
111 /* get a new block of CEs and chain it on CEFree */
115 struct CEBlock *block;
118 block = (struct CEBlock *)malloc(sizeof(struct CEBlock));
120 ViceLog(0, ("Failed malloc in GetCEBlock\n"));
121 ShutDownAndCore(PANIC);
124 for (i = 0; i < (CESPERBLOCK - 1); i++) {
125 Lock_Init(&block->entry[i].lock);
126 block->entry[i].next = &(block->entry[i + 1]);
128 block->entry[CESPERBLOCK - 1].next = 0;
129 Lock_Init(&block->entry[CESPERBLOCK - 1].lock);
130 CEFree = (struct client *)block;
136 /* get the next available CE */
137 static struct client *
140 struct client *entry;
145 ViceLog(0, ("CEFree NULL in GetCE\n"));
146 ShutDownAndCore(PANIC);
150 CEFree = entry->next;
152 memset(entry, 0, CLIENT_TO_ZERO(entry));
158 /* return an entry to the free list */
160 FreeCE(struct client *entry)
162 entry->VenusEpoch = 0;
164 entry->next = CEFree;
171 * The HTs and HTBlocks variables were formerly static, but they are
172 * now referenced elsewhere in the FileServer.
174 int HTs = 0; /* active file entries */
175 int HTBlocks = 0; /* number of blocks of HTs */
176 static struct host *HTFree = 0; /* first free file entry */
179 * Hash tables of host pointers. We need two tables, one
180 * to map IP addresses onto host pointers, and another
181 * to map host UUIDs onto host pointers.
183 static struct h_AddrHashChain *hostAddrHashTable[h_HASHENTRIES];
184 static struct h_UuidHashChain *hostUuidHashTable[h_HASHENTRIES];
185 #define h_HashIndex(hostip) (ntohl(hostip) & (h_HASHENTRIES-1))
186 #define h_UuidHashIndex(uuidp) (((int)(afs_uuid_hash(uuidp))) & (h_HASHENTRIES-1))
188 struct HTBlock { /* block of HTSPERBLOCK file entries */
189 struct host entry[h_HTSPERBLOCK];
193 /* get a new block of HTs and chain it on HTFree */
197 struct HTBlock *block;
199 static int index = 0;
201 if (HTBlocks == h_MAXHOSTTABLES) {
202 ViceLog(0, ("h_MAXHOSTTABLES reached\n"));
203 ShutDownAndCore(PANIC);
206 block = (struct HTBlock *)malloc(sizeof(struct HTBlock));
208 ViceLog(0, ("Failed malloc in GetHTBlock\n"));
209 ShutDownAndCore(PANIC);
211 #ifdef AFS_PTHREAD_ENV
212 for (i = 0; i < (h_HTSPERBLOCK); i++)
213 CV_INIT(&block->entry[i].cond, "block entry", CV_DEFAULT, 0);
214 #endif /* AFS_PTHREAD_ENV */
215 for (i = 0; i < (h_HTSPERBLOCK); i++)
216 Lock_Init(&block->entry[i].lock);
217 for (i = 0; i < (h_HTSPERBLOCK - 1); i++)
218 block->entry[i].next = &(block->entry[i + 1]);
219 for (i = 0; i < (h_HTSPERBLOCK); i++)
220 block->entry[i].index = index++;
221 block->entry[h_HTSPERBLOCK - 1].next = 0;
222 HTFree = (struct host *)block;
223 hosttableptrs[HTBlocks++] = block->entry;
228 /* get the next available HT */
236 osi_Assert(HTFree != NULL);
238 HTFree = entry->next;
240 memset(entry, 0, HOST_TO_ZERO(entry));
246 /* return an entry to the free list */
248 FreeHT(struct host *entry)
250 entry->next = HTFree;
257 hpr_Initialize(struct ubik_client **uclient)
260 struct rx_connection *serverconns[MAXSERVERS];
261 struct rx_securityClass *sc;
262 struct afsconf_dir *tdir;
264 struct afsconf_cell info;
268 tdir = afsconf_Open(AFSDIR_SERVER_ETC_DIRPATH);
270 ViceLog(0, ("hpr_Initialize: Could not open configuration directory: %s", AFSDIR_SERVER_ETC_DIRPATH));
274 code = afsconf_GetLocalCell(tdir, cellstr, sizeof(cellstr));
276 ViceLog(0, ("hpr_Initialize: Could not get local cell. [%d]", code));
281 code = afsconf_GetCellInfo(tdir, cellstr, "afsprot", &info);
283 ViceLog(0, ("hpr_Initialize: Could not locate cell %s in %s/%s",
284 cellstr, confDir->name, AFSDIR_CELLSERVDB_FILE));
291 ViceLog(0, ("hpr_Initialize: Could not initialize rx."));
296 /* Most callers use secLevel==1, however, the fileserver uses secLevel==2
297 * to force use of the KeyFile. secLevel == 0 implies -noauth was
299 code = afsconf_ClientAuthSecure(tdir, &sc, &scIndex);
301 ViceLog(0, ("hpr_Initialize: clientauthsecure returns %d %s "
302 "(so trying noauth)", code, afs_error_message(code)));
303 scIndex = RX_SECIDX_NULL;
304 sc = rxnull_NewClientSecurityObject();
307 if (scIndex == RX_SECIDX_NULL)
308 ViceLog(0, ("hpr_Initialize: Could not get afs tokens, "
309 "running unauthenticated. [%d]", code));
311 memset(serverconns, 0, sizeof(serverconns)); /* terminate list!!! */
312 for (i = 0; i < info.numServers; i++) {
314 rx_NewConnection(info.hostAddr[i].sin_addr.s_addr,
315 info.hostAddr[i].sin_port, PRSRV,
319 code = ubik_ClientInit(serverconns, uclient);
321 ViceLog(0, ("hpr_Initialize: ubik client init failed. [%d]", code));
324 code = rxs_Release(sc);
329 hpr_End(struct ubik_client *uclient)
334 code = ubik_ClientDestroy(uclient);
340 hpr_GetHostCPS(afs_int32 host, prlist *CPS)
342 #ifdef AFS_PTHREAD_ENV
345 struct ubik_client *uclient =
346 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
349 code = hpr_Initialize(&uclient);
351 osi_Assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
357 code = ubik_PR_GetHostCPS(uclient, 0, host, CPS, &over);
358 if (code != PRSUCCESS)
361 /* do something about this, probably make a new call */
362 /* don't forget there's a hard limit in the interface */
364 "membership list for host id %d exceeds display limit\n",
369 return pr_GetHostCPS(host, CPS);
374 hpr_NameToId(namelist *names, idlist *ids)
376 #ifdef AFS_PTHREAD_ENV
379 struct ubik_client *uclient =
380 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
383 code = hpr_Initialize(&uclient);
385 osi_Assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
390 for (i = 0; i < names->namelist_len; i++)
391 stolower(names->namelist_val[i]);
392 code = ubik_PR_NameToID(uclient, 0, names, ids);
395 return pr_NameToId(names, ids);
400 hpr_IdToName(idlist *ids, namelist *names)
402 #ifdef AFS_PTHREAD_ENV
404 struct ubik_client *uclient =
405 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
408 code = hpr_Initialize(&uclient);
410 osi_Assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
415 code = ubik_PR_IDToName(uclient, 0, ids, names);
418 return pr_IdToName(ids, names);
423 hpr_GetCPS(afs_int32 id, prlist *CPS)
425 #ifdef AFS_PTHREAD_ENV
428 struct ubik_client *uclient =
429 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
432 code = hpr_Initialize(&uclient);
434 osi_Assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
440 code = ubik_PR_GetCPS(uclient, 0, id, CPS, &over);
441 if (code != PRSUCCESS)
444 /* do something about this, probably make a new call */
445 /* don't forget there's a hard limit in the interface */
446 fprintf(stderr, "membership list for id %d exceeds display limit\n",
451 return pr_GetCPS(id, CPS);
455 static short consolePort = 0;
458 h_Lock_r(struct host *host)
468 * returns 1 if already locked
469 * else returns locks and returns 0
473 h_NBLock_r(struct host *host)
475 struct Lock *hostLock = &host->lock;
480 if (!(hostLock->excl_locked) && !(hostLock->readers_reading))
481 hostLock->excl_locked = WRITE_LOCK;
485 LOCK_UNLOCK(hostLock);
494 #if FS_STATS_DETAILED
495 /*------------------------------------------------------------------------
496 * PRIVATE h_AddrInSameNetwork
499 * Given a target IP address and a candidate IP address (both
500 * in host byte order), return a non-zero value (1) if the
501 * candidate address is in a different network from the target
505 * a_targetAddr : Target address.
506 * a_candAddr : Candidate address.
509 * 1 if the candidate address is in the same net as the target,
513 * The target and candidate addresses are both in host byte
514 * order, NOT network byte order, when passed in. We return
515 * our value as a character, since that's the type of field in
516 * the host structure, where this info will be stored.
520 *------------------------------------------------------------------------*/
523 h_AddrInSameNetwork(afs_uint32 a_targetAddr, afs_uint32 a_candAddr)
524 { /*h_AddrInSameNetwork */
526 afs_uint32 targetNet;
530 * Pull out the network and subnetwork numbers from the target
531 * and candidate addresses. We can short-circuit this whole
532 * affair if the target and candidate addresses are not of the
535 if (IN_CLASSA(a_targetAddr)) {
536 if (!(IN_CLASSA(a_candAddr))) {
539 targetNet = a_targetAddr & IN_CLASSA_NET;
540 candNet = a_candAddr & IN_CLASSA_NET;
541 } else if (IN_CLASSB(a_targetAddr)) {
542 if (!(IN_CLASSB(a_candAddr))) {
545 targetNet = a_targetAddr & IN_CLASSB_NET;
546 candNet = a_candAddr & IN_CLASSB_NET;
547 } /*Class B target */
548 else if (IN_CLASSC(a_targetAddr)) {
549 if (!(IN_CLASSC(a_candAddr))) {
552 targetNet = a_targetAddr & IN_CLASSC_NET;
553 candNet = a_candAddr & IN_CLASSC_NET;
554 } /*Class C target */
556 targetNet = a_targetAddr;
557 candNet = a_candAddr;
558 } /*Class D address */
561 * Now, simply compare the extracted net values for the two addresses
562 * (which at this point are known to be of the same class)
564 if (targetNet == candNet)
569 } /*h_AddrInSameNetwork */
570 #endif /* FS_STATS_DETAILED */
573 /* Assumptions: called with held host */
575 h_gethostcps_r(struct host *host, afs_int32 now)
580 /* wait if somebody else is already doing the getCPS call */
581 while (host->hostFlags & HCPS_INPROGRESS) {
582 slept = 1; /* I did sleep */
583 host->hostFlags |= HCPS_WAITING; /* I am sleeping now */
584 #ifdef AFS_PTHREAD_ENV
585 CV_WAIT(&host->cond, &host_glock_mutex);
586 #else /* AFS_PTHREAD_ENV */
587 if ((code = LWP_WaitProcess(&(host->hostFlags))) != LWP_SUCCESS)
588 ViceLog(0, ("LWP_WaitProcess returned %d\n", code));
589 #endif /* AFS_PTHREAD_ENV */
593 host->hostFlags |= HCPS_INPROGRESS; /* mark as CPSCall in progress */
594 if (host->hcps.prlist_val)
595 free(host->hcps.prlist_val); /* this is for hostaclRefresh */
596 host->hcps.prlist_val = NULL;
597 host->hcps.prlist_len = 0;
598 host->cpsCall = slept ? (FT_ApproxTime()) : (now);
601 code = hpr_GetHostCPS(ntohl(host->host), &host->hcps);
606 * Although ubik_Call (called by pr_GetHostCPS) traverses thru all protection servers
607 * and reevaluates things if no sync server or quorum is found we could still end up
608 * with one of these errors. In such case we would like to reevaluate the rpc call to
609 * find if there's cps for this guy. We treat other errors (except network failures
610 * ones - i.e. code < 0) as an indication that there is no CPS for this host. Ideally
611 * we could like to deal this problem the other way around (i.e. if code == NOCPS
612 * ignore else retry next time) but the problem is that there're other errors (i.e.
613 * EPERM) for which we don't want to retry and we don't know the whole code list!
615 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC) {
617 * We would have preferred to use a while loop and try again since ops in protected
618 * acls for this host will fail now but they'll be reevaluated on any subsequent
619 * call. The attempt to wait for a quorum/sync site or network error won't work
620 * since this problems really should only occurs during a complete fileserver
621 * restart. Since the fileserver will start before the ptservers (and thus before
622 * quorums are complete) clients will be utilizing all the fileserver's lwps!!
624 host->hcpsfailed = 1;
626 ("Warning: GetHostCPS failed (%d) for %p (%s:%d); will retry\n",
627 code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
629 host->hcpsfailed = 0;
631 ("gethost: GetHostCPS failed (%d) for %p (%s:%d); ignored\n",
632 code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
634 if (host->hcps.prlist_val)
635 free(host->hcps.prlist_val);
636 host->hcps.prlist_val = NULL;
637 host->hcps.prlist_len = 0; /* Make sure it's zero */
639 host->hcpsfailed = 0;
641 host->hostFlags &= ~HCPS_INPROGRESS;
642 /* signal all who are waiting */
643 if (host->hostFlags & HCPS_WAITING) { /* somebody is waiting */
644 host->hostFlags &= ~HCPS_WAITING;
645 #ifdef AFS_PTHREAD_ENV
646 CV_BROADCAST(&host->cond);
647 #else /* AFS_PTHREAD_ENV */
648 if ((code = LWP_NoYieldSignal(&(host->hostFlags))) != LWP_SUCCESS)
649 ViceLog(0, ("LWP_NoYieldSignal returns %d\n", code));
650 #endif /* AFS_PTHREAD_ENV */
654 /* args in net byte order */
656 h_flushhostcps(afs_uint32 hostaddr, afs_uint16 hport)
661 h_Lookup_r(hostaddr, hport, &host);
663 host->hcpsfailed = 1;
672 * Allocate a host. It will be identified by the peer (ip,port) info in the
673 * rx connection provided. The host is returned held and locked
675 #define DEF_ROPCONS 2115
678 h_Alloc_r(struct rx_connection *r_con)
680 struct servent *serverentry;
682 #if FS_STATS_DETAILED
683 afs_uint32 newHostAddr_HBO; /*New host IP addr, in host byte order */
684 #endif /* FS_STATS_DETAILED */
688 host->host = rxr_HostOf(r_con);
689 host->port = rxr_PortOf(r_con);
691 h_AddHostToAddrHashTable_r(host->host, host->port, host);
693 if (consolePort == 0) { /* find the portal number for console */
694 #if defined(AFS_OSF_ENV)
695 serverentry = getservbyname("ropcons", "");
697 serverentry = getservbyname("ropcons", 0);
700 consolePort = serverentry->s_port;
702 consolePort = htons(DEF_ROPCONS); /* Use a default */
704 if (host->port == consolePort)
706 /* Make a callback channel even for the console, on the off chance that it
707 * makes a request that causes a break call back. It shouldn't. */
708 h_SetupCallbackConn_r(host);
709 host->LastCall = host->cpsCall = host->ActiveCall = FT_ApproxTime();
711 host->hcps.prlist_val = NULL;
712 host->hcps.prlist_len = 0;
713 host->interface = NULL;
715 host->hcpsfailed = 0; /* save cycles */
716 h_gethostcps(host); /* do this under host hold/lock */
718 host->FirstClient = NULL;
721 h_InsertList_r(host); /* update global host List */
722 #if FS_STATS_DETAILED
724 * Compare the new host's IP address (in host byte order) with ours
725 * (the File Server's), remembering if they are in the same network.
727 newHostAddr_HBO = (afs_uint32) ntohl(host->host);
728 host->InSameNetwork =
729 h_AddrInSameNetwork(FS_HostAddr_HBO, newHostAddr_HBO);
730 #endif /* FS_STATS_DETAILED */
737 /* Make a callback channel even for the console, on the off chance that it
738 * makes a request that causes a break call back. It shouldn't. */
740 h_SetupCallbackConn_r(struct host * host)
743 sc = rxnull_NewClientSecurityObject();
744 host->callback_rxcon =
745 rx_NewConnection(host->host, host->port, 1, sc, 0);
746 rx_SetConnDeadTime(host->callback_rxcon, 50);
747 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
751 * Lookup a host given an IP address and UDP port number.
752 * hostaddr and hport are in network order
753 * hostaddr and hport are in network order
754 * On return, refCount is incremented.
757 h_Lookup_r(afs_uint32 haddr, afs_uint16 hport, struct host **hostp)
760 struct host *host = NULL;
761 struct h_AddrHashChain *chain;
762 int index = h_HashIndex(haddr);
763 extern int hostaclRefresh;
766 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
767 host = chain->hostPtr;
769 if (!(host->hostFlags & HOSTDELETED) && chain->addr == haddr
770 && chain->port == hport) {
771 if ((host->hostFlags & HWHO_INPROGRESS) &&
772 h_threadquota(host->lock.num_waiting)) {
778 if (host->hostFlags & HOSTDELETED) {
785 now = FT_ApproxTime(); /* always evaluate "now" */
786 if (host->hcpsfailed || (host->cpsCall + hostaclRefresh < now)) {
788 * Every hostaclRefresh period (def 2 hrs) get the new
789 * membership list for the host. Note this could be the
790 * first time that the host is added to a group. Also
791 * here we also retry on previous legitimate hcps failures.
793 * If we get here refCount is elevated.
795 h_gethostcps_r(host, now);
805 /* Lookup a host given its UUID. */
807 h_LookupUuid_r(afsUUID * uuidp)
809 struct host *host = 0;
810 struct h_UuidHashChain *chain;
811 int index = h_UuidHashIndex(uuidp);
813 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
814 host = chain->hostPtr;
816 if (!(host->hostFlags & HOSTDELETED) && host->interface
817 && afs_uuid_equal(&host->interface->uuid, uuidp)) {
825 /* h_TossStuff_r: Toss anything in the host structure (the host or
826 * clients marked for deletion. Called from h_Release_r ONLY.
827 * To be called, there must be no holds, and either host->deleted
828 * or host->clientDeleted must be set.
831 h_TossStuff_r(struct host *host)
833 struct client **cp, *client;
836 /* make sure host doesn't go away over h_NBLock_r */
839 code = h_NBLock_r(host);
841 /* don't use h_Release_r, since that may call h_TossStuff_r again */
844 /* if somebody still has this host locked */
848 ("Warning: h_TossStuff_r failed; Host %" AFS_PTR_FMT " (%s:%d) was locked.\n",
849 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
855 /* if somebody still has this host held */
856 /* we must check this _after_ h_NBLock_r, since h_NBLock_r can drop and
857 * reacquire H_LOCK */
858 if (host->refCount > 0) {
861 ("Warning: h_TossStuff_r failed; Host %" AFS_PTR_FMT " (%s:%d) was held.\n",
862 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
866 /* ASSUMPTION: rxi_FreeConnection() does not yield */
867 for (cp = &host->FirstClient; (client = *cp);) {
868 if ((host->hostFlags & HOSTDELETED) || client->deleted) {
870 ObtainWriteLockNoBlock(&client->lock, code);
874 ("Warning: h_TossStuff_r failed: Host %p (%s:%d) "
875 "client %p was locked.\n",
876 host, afs_inet_ntoa_r(host->host, hoststr),
877 ntohs(host->port), client));
881 if (client->refCount) {
884 ("Warning: h_TossStuff_r failed: Host %p (%s:%d) "
885 "client %p refcount %d.\n",
886 host, afs_inet_ntoa_r(host->host, hoststr),
887 ntohs(host->port), client, client->refCount));
888 /* This is the same thing we do if the host is locked */
889 ReleaseWriteLock(&client->lock);
892 client->CPS.prlist_len = 0;
893 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
894 free(client->CPS.prlist_val);
895 client->CPS.prlist_val = NULL;
896 CurrentConnections--;
898 ReleaseWriteLock(&client->lock);
904 /* We've just cleaned out all the deleted clients; clear the flag */
905 host->hostFlags &= ~CLIENTDELETED;
907 if (host->hostFlags & HOSTDELETED) {
908 struct rx_connection *rxconn;
909 struct AddrPort hostAddrPort;
912 if (host->Console & 1)
914 if ((rxconn = host->callback_rxcon)) {
915 host->callback_rxcon = (struct rx_connection *)0;
916 rx_DestroyConnection(rxconn);
918 if (host->hcps.prlist_val)
919 free(host->hcps.prlist_val);
920 host->hcps.prlist_val = NULL;
921 host->hcps.prlist_len = 0;
922 DeleteAllCallBacks_r(host, 1);
923 host->hostFlags &= ~RESETDONE; /* just to be safe */
925 /* if alternate addresses do not exist */
926 if (!(host->interface)) {
927 h_DeleteHostFromAddrHashTable_r(host->host, host->port, host);
929 h_DeleteHostFromUuidHashTable_r(host);
930 h_DeleteHostFromAddrHashTable_r(host->host, host->port, host);
931 /* delete the hash entry for each valid alternate addresses */
932 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
933 hostAddrPort = host->interface->interface[i];
935 * if the interface addr/port is the primary, we already
936 * removed it. If the addr/port is not valid, its not
939 if (hostAddrPort.valid &&
940 (host->host != hostAddrPort.addr ||
941 host->port != hostAddrPort.port))
942 h_DeleteHostFromAddrHashTable_r(hostAddrPort.addr, hostAddrPort.port, host);
944 free(host->interface);
945 host->interface = NULL;
946 } /* if alternate address exists */
948 h_DeleteList_r(host); /* remove host from global host List */
955 /* h_Enumerate: Calls (*proc)(host, param) for at least each host in the
956 * system at the start of the enumeration (perhaps more). Hosts may be deleted
957 * (have delete flag set); ditto for clients. refCount is always incremented
958 * before (*proc) is called.
960 * The return value of the proc is a set of flags. The proc should set
961 * H_ENUMERATE_BAIL(foo) if the enumeration of hosts should be stopped early.
964 h_Enumerate(int (*proc) (struct host*, void *), void *param)
966 struct host *host, **list;
971 if (hostCount == 0) {
975 list = (struct host **)malloc(hostCount * sizeof(struct host *));
977 ViceLogThenPanic(0, ("Failed malloc in h_Enumerate (list)\n"));
979 for (totalCount = count = 0, host = hostList;
980 host && totalCount < hostCount;
981 host = host->next, totalCount++) {
983 if (!(host->hostFlags & HOSTDELETED)) {
989 if (totalCount != hostCount) {
990 ViceLog(0, ("h_Enumerate found %d of %d hosts\n", totalCount, hostCount));
991 } else if (host != NULL) {
992 ViceLog(0, ("h_Enumerate found more than %d hosts\n", hostCount));
993 ShutDownAndCore(PANIC);
996 for (i = 0; i < count; i++) {
998 flags = (*proc) (list[i], param);
1000 h_Release_r(list[i]);
1002 /* bail out of the enumeration early */
1003 if (H_ENUMERATE_ISSET_BAIL(flags)) {
1006 ViceLog(0, ("h_Enumerate got back invalid return value %d\n", flags));
1007 ShutDownAndCore(PANIC);
1014 /* h_Enumerate_r (revised):
1015 * Calls (*proc)(host, param) for each host in hostList, starting
1016 * at enumstart. Called only under H_LOCK. Hosts may be deleted (have
1017 * delete flag set); ditto for clients. refCount is always incremented
1018 * before (*proc) is called.
1020 * @note Assumes that hostList is only prepended to, that a host is never
1021 * inserted into the middle. Otherwise this would not be guaranteed to
1024 * The return value of the proc is a set of flags. The proc should set
1025 * H_ENUMERATE_BAIL(foo) if the enumeration of hosts should be stopped early.
1028 h_Enumerate_r(int (*proc) (struct host *, void *),
1029 struct host *enumstart, void *param)
1031 struct host *host, *next;
1035 if (hostCount == 0) {
1042 /* find the first non-deleted host, so we know where to actually start
1044 for (count = 0; host && count < hostCount; count++) {
1045 if (!(host->hostFlags & HOSTDELETED)) {
1052 /* we didn't find a non-deleted host... */
1054 if (host && count >= hostCount) {
1055 /* ...because we found a loop */
1056 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", hostCount));
1057 ShutDownAndCore(PANIC);
1060 /* ...because the hostList is full of deleted hosts */
1064 h_Hold_r(enumstart);
1066 /* remember hostCount, lest it change over the potential H_LOCK drop in
1068 origHostCount = hostCount;
1070 for (count = 0, host = enumstart; host && count < origHostCount; host = next, count++) {
1073 /* find the next non-deleted host */
1074 while (next && (next->hostFlags & HOSTDELETED)) {
1076 /* inc count for the skipped-over host */
1077 if (++count > origHostCount) {
1078 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", origHostCount));
1079 ShutDownAndCore(PANIC);
1085 if (!(host->hostFlags & HOSTDELETED)) {
1087 flags = (*proc) (host, param);
1088 if (H_ENUMERATE_ISSET_BAIL(flags)) {
1089 h_Release_r(host); /* this might free up the host */
1092 ViceLog(0, ("h_Enumerate_r got back invalid return value %d\n", flags));
1093 ShutDownAndCore(PANIC);
1096 h_Release_r(host); /* this might free up the host */
1098 if (host != NULL && count >= origHostCount) {
1099 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", origHostCount));
1100 ShutDownAndCore(PANIC);
1102 } /*h_Enumerate_r */
1105 /* inserts a new HashChain structure corresponding to this UUID */
1107 h_AddHostToUuidHashTable_r(struct afsUUID *uuid, struct host *host)
1110 struct h_UuidHashChain *chain;
1111 char uuid1[128], uuid2[128];
1114 /* hash into proper bucket */
1115 index = h_UuidHashIndex(uuid);
1117 /* don't add the same entry multiple times */
1118 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
1119 if (!chain->hostPtr)
1122 if (chain->hostPtr->interface &&
1123 afs_uuid_equal(&chain->hostPtr->interface->uuid, uuid)) {
1124 if (LogLevel >= 125) {
1125 afsUUID_to_string(&chain->hostPtr->interface->uuid, uuid1,
1127 afsUUID_to_string(uuid, uuid2, 127);
1128 ViceLog(125, ("h_AddHostToUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s) exists as %s:%d (uuid %s)\n",
1130 afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1131 ntohs(chain->hostPtr->port), uuid2));
1137 /* insert into beginning of list for this bucket */
1138 chain = (struct h_UuidHashChain *)malloc(sizeof(struct h_UuidHashChain));
1140 ViceLogThenPanic(0, ("Failed malloc in h_AddHostToUuidHashTable_r\n"));
1142 chain->hostPtr = host;
1143 chain->next = hostUuidHashTable[index];
1144 hostUuidHashTable[index] = chain;
1147 afsUUID_to_string(uuid, uuid2, 127);
1149 ("h_AddHostToUuidHashTable_r: host %p (%s:%d) added as uuid %s\n",
1150 host, afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1151 ntohs(chain->hostPtr->port), uuid2));
1154 /* deletes a HashChain structure corresponding to this host */
1156 h_DeleteHostFromUuidHashTable_r(struct host *host)
1159 struct h_UuidHashChain **uhp, *uth;
1163 if (!host->interface)
1166 /* hash into proper bucket */
1167 index = h_UuidHashIndex(&host->interface->uuid);
1169 if (LogLevel >= 125)
1170 afsUUID_to_string(&host->interface->uuid, uuid1, 127);
1171 for (uhp = &hostUuidHashTable[index]; (uth = *uhp); uhp = &uth->next) {
1172 osi_Assert(uth->hostPtr);
1173 if (uth->hostPtr == host) {
1175 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d)\n",
1176 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1177 ntohs(host->port)));
1184 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d) not found\n",
1185 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1186 ntohs(host->port)));
1191 * This is called with host locked and held.
1193 * All addresses are in network byte order.
1196 invalidateInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1200 struct Interface *interface;
1201 char hoststr[16], hoststr2[16];
1204 osi_Assert(host->interface);
1206 ViceLog(125, ("invalidateInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1207 host, afs_inet_ntoa_r(host->host, hoststr),
1208 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1212 * Make sure this address is on the list of known addresses
1215 interface = host->interface;
1216 number = host->interface->numberOfInterfaces;
1217 for (i = 0; i < number; i++) {
1218 if (interface->interface[i].addr == addr &&
1219 interface->interface[i].port == port) {
1220 if (interface->interface[i].valid) {
1221 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1222 interface->interface[i].valid = 0;
1233 * This is called with host locked and held. This function differs
1234 * from removeInterfaceAddr_r in that it is called when the address
1235 * is being removed from the host regardless of whether or not there
1236 * is an interface list for the host. This function will delete the
1237 * host if there are no addresses left on it.
1239 * All addresses are in network byte order.
1242 removeAddress_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1245 char hoststr[16], hoststr2[16];
1246 struct rx_connection *rxconn;
1248 if (!host->interface || host->interface->numberOfInterfaces == 1) {
1249 if (host->host == addr && host->port == port) {
1251 ("Removing only address for host %" AFS_PTR_FMT " (%s:%d), deleting host.\n",
1252 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1253 host->hostFlags |= HOSTDELETED;
1255 * Do not remove the primary addr/port from the hash table.
1256 * It will be ignored due to the HOSTDELETED flag and will
1257 * be removed when h_TossStuff_r() cleans up the HOSTDELETED
1258 * host. Removing it here will only result in a search for
1259 * the host/addr/port in the hash chain which will fail.
1263 ("Removing address that does not belong to host %" AFS_PTR_FMT " (%s:%d).\n",
1264 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1267 if (host->host == addr && host->port == port) {
1268 removeInterfaceAddr_r(host, addr, port);
1270 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1271 if (host->interface->interface[i].valid) {
1273 ("Removed address for host %" AFS_PTR_FMT " (%s:%d), new primary interface %s:%d.\n",
1274 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1275 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr2),
1276 ntohs(host->interface->interface[i].port)));
1277 host->host = host->interface->interface[i].addr;
1278 host->port = host->interface->interface[i].port;
1279 h_AddHostToAddrHashTable_r(host->host, host->port, host);
1284 if (i == host->interface->numberOfInterfaces) {
1286 ("Removed only address for host %" AFS_PTR_FMT " (%s:%d), no valid alternate interfaces, deleting host.\n",
1287 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1288 host->hostFlags |= HOSTDELETED;
1289 /* addr/port was removed from the hash table */
1293 rxconn = host->callback_rxcon;
1294 host->callback_rxcon = NULL;
1297 rx_DestroyConnection(rxconn);
1302 sc = rxnull_NewClientSecurityObject();
1303 host->callback_rxcon =
1304 rx_NewConnection(host->host, host->port, 1, sc, 0);
1305 rx_SetConnDeadTime(host->callback_rxcon, 50);
1306 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
1309 /* not the primary addr/port, just invalidate it */
1310 invalidateInterfaceAddr_r(host, addr, port);
1318 createHostAddrHashChain_r(int index, afs_uint32 addr, afs_uint16 port, struct host *host)
1320 struct h_AddrHashChain *chain;
1323 /* insert into beginning of list for this bucket */
1324 chain = (struct h_AddrHashChain *)malloc(sizeof(struct h_AddrHashChain));
1326 ViceLogThenPanic(0, ("Failed malloc in h_AddHostToAddrHashTable_r\n"));
1328 chain->hostPtr = host;
1329 chain->next = hostAddrHashTable[index];
1332 hostAddrHashTable[index] = chain;
1333 ViceLog(125, ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " added as %s:%d\n",
1334 host, afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1338 * Resolve host address conflicts when hashing by address.
1340 * @param[in] addr an ip address of the interface
1341 * @param[in] port the port of the interface
1342 * @param[in] newHost the host being added with this address
1343 * @param[in] oldHost the host previously added with this address
1346 reconcileHosts_r(afs_uint32 addr, afs_uint16 port, struct host *newHost,
1347 struct host *oldHost)
1349 struct rx_connection *cb = NULL;
1351 struct interfaceAddr interf;
1353 afsUUID *newHostUuid = &nulluuid;
1354 afsUUID *oldHostUuid = &nulluuid;
1358 ("reconcileHosts_r: addr %s:%d newHost %" AFS_PTR_FMT " oldHost %"
1359 AFS_PTR_FMT, afs_inet_ntoa_r(addr, hoststr), ntohs(port),
1362 osi_Assert(oldHost != newHost);
1363 caps.Capabilities_val = NULL;
1366 sc = rxnull_NewClientSecurityObject();
1369 cb = rx_NewConnection(addr, port, 1, sc, 0);
1370 rx_SetConnDeadTime(cb, 50);
1371 rx_SetConnHardDeadTime(cb, AFS_HARDDEADTIME);
1376 code = RXAFSCB_TellMeAboutYourself(cb, &interf, &caps);
1377 if (code == RXGEN_OPCODE) {
1378 code = RXAFSCB_WhoAreYou(cb, &interf);
1382 if (code == RXGEN_OPCODE ||
1383 (code == 0 && afs_uuid_equal(&interf.uuid, &nulluuid))) {
1385 ("reconcileHosts_r: WhoAreYou not supported for connection (%s:%d), error %d\n",
1386 afs_inet_ntoa_r(addr, hoststr), ntohs(port), code));
1391 ("reconcileHosts_r: WhoAreYou failed for connection (%s:%d), error %d\n",
1392 afs_inet_ntoa_r(addr, hoststr), ntohs(port), code));
1396 /* Since lock was dropped, the hosts may have been deleted during the rpcs. */
1397 if ((newHost->hostFlags & HOSTDELETED)
1398 && (oldHost->hostFlags & HOSTDELETED)) {
1400 ("reconcileHosts_r: new and old hosts were deleted during probe.\n"));
1404 /* A check can be done if at least one of the hosts has a uuid. It
1405 * is an error if the hosts have the same (not null) uuid. */
1406 if ((!(newHost->hostFlags & HOSTDELETED)) && newHost->interface) {
1407 newHostUuid = &(newHost->interface->uuid);
1409 if ((!(oldHost->hostFlags & HOSTDELETED)) && oldHost->interface) {
1410 oldHostUuid = &(oldHost->interface->uuid);
1412 if (afs_uuid_equal(newHostUuid, &nulluuid) &&
1413 afs_uuid_equal(oldHostUuid, &nulluuid)) {
1415 ("reconcileHosts_r: Cannot reconcile hosts for connection (%s:%d), no uuids\n",
1416 afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1419 if (afs_uuid_equal(newHostUuid, oldHostUuid)) {
1421 ("reconcileHosts_r: Cannot reconcile hosts for connection (%s:%d), same uuids\n",
1422 afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1426 /* Determine which host should be hashed */
1427 if ((!(newHost->hostFlags & HOSTDELETED))
1428 && afs_uuid_equal(newHostUuid, &(interf.uuid))) {
1429 /* Install the new host into the hash before removing the stale
1430 * addresses. Walk the hash chain again since the hash table may have
1431 * been changed when the host lock was dropped to get the uuid. */
1432 struct h_AddrHashChain *chain;
1433 int index = h_HashIndex(addr);
1434 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1435 if (chain->addr == addr && chain->port == port) {
1436 chain->hostPtr = newHost;
1437 removeAddress_r(oldHost, addr, port);
1441 createHostAddrHashChain_r(index, addr, port, newHost);
1442 removeAddress_r(oldHost, addr, port);
1445 if ((!(oldHost->hostFlags & HOSTDELETED))
1446 && afs_uuid_equal(oldHostUuid, &(interf.uuid))) {
1447 removeAddress_r(newHost, addr, port);
1452 if (!(newHost->hostFlags & HOSTDELETED)) {
1453 removeAddress_r(newHost, addr, port);
1455 if (!(oldHost->hostFlags & HOSTDELETED)) {
1456 removeAddress_r(oldHost, addr, port);
1460 h_Release_r(newHost);
1461 h_Release_r(oldHost);
1462 rx_DestroyConnection(cb);
1466 /* inserts a new HashChain structure corresponding to this address */
1468 h_AddHostToAddrHashTable_r(afs_uint32 addr, afs_uint16 port, struct host *host)
1471 struct h_AddrHashChain *chain;
1474 /* hash into proper bucket */
1475 index = h_HashIndex(addr);
1477 /* don't add the same address:port pair entry multiple times */
1478 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1479 if (chain->addr == addr && chain->port == port) {
1480 if (chain->hostPtr == host) {
1482 ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) already hashed\n",
1483 host, afs_inet_ntoa_r(chain->addr, hoststr),
1484 ntohs(chain->port)));
1487 if (!(chain->hostPtr->hostFlags & HOSTDELETED)) {
1488 /* attempt to resolve host address collision */
1489 reconcileHosts_r(addr, port, host, chain->hostPtr);
1494 createHostAddrHashChain_r(index, addr, port, host);
1498 * This is called with host locked and held.
1499 * It is called to either validate or add an additional interface
1500 * address/port on the specified host.
1502 * All addresses are in network byte order.
1505 addInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1509 struct Interface *interface;
1510 char hoststr[16], hoststr2[16];
1513 osi_Assert(host->interface);
1516 * Make sure this address is on the list of known addresses
1519 number = host->interface->numberOfInterfaces;
1520 for (i = 0; i < number; i++) {
1521 if (host->interface->interface[i].addr == addr &&
1522 host->interface->interface[i].port == port) {
1524 ("addInterfaceAddr : found host %" AFS_PTR_FMT " (%s:%d) adding %s:%d%s\n",
1525 host, afs_inet_ntoa_r(host->host, hoststr),
1526 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1527 ntohs(port), host->interface->interface[i].valid ? "" :
1530 if (host->interface->interface[i].valid == 0) {
1531 host->interface->interface[i].valid = 1;
1532 h_AddHostToAddrHashTable_r(addr, port, host);
1538 ViceLog(125, ("addInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) adding %s:%d\n",
1539 host, afs_inet_ntoa_r(host->host, hoststr),
1540 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1543 interface = (struct Interface *)
1544 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * number));
1546 ViceLogThenPanic(0, ("Failed malloc in addInterfaceAddr_r\n"));
1548 interface->numberOfInterfaces = number + 1;
1549 interface->uuid = host->interface->uuid;
1550 for (i = 0; i < number; i++)
1551 interface->interface[i] = host->interface->interface[i];
1553 /* Add the new valid interface */
1554 interface->interface[number].addr = addr;
1555 interface->interface[number].port = port;
1556 interface->interface[number].valid = 1;
1557 h_AddHostToAddrHashTable_r(addr, port, host);
1558 free(host->interface);
1559 host->interface = interface;
1566 * This is called with host locked and held.
1568 * All addresses are in network byte order.
1571 removeInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1575 struct Interface *interface;
1576 char hoststr[16], hoststr2[16];
1579 osi_Assert(host->interface);
1581 ViceLog(125, ("removeInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1582 host, afs_inet_ntoa_r(host->host, hoststr),
1583 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1587 * Make sure this address is on the list of known addresses
1590 interface = host->interface;
1591 number = host->interface->numberOfInterfaces;
1592 for (i = 0; i < number; i++) {
1593 if (interface->interface[i].addr == addr &&
1594 interface->interface[i].port == port) {
1595 if (interface->interface[i].valid)
1596 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1598 for (; i < number; i++) {
1599 interface->interface[i] = interface->interface[i+1];
1601 interface->numberOfInterfaces = number;
1612 h_threadquota(int waiting)
1617 } else if (lwps > 32) {
1620 } else if (lwps > 16) {
1630 /* If found, host is returned with refCount incremented */
1632 h_GetHost_r(struct rx_connection *tcon)
1635 struct host *oldHost;
1637 struct interfaceAddr interf;
1638 int interfValid = 0;
1639 struct Identity *identP = NULL;
1642 char hoststr[16], hoststr2[16];
1644 struct rx_connection *cb_conn = NULL;
1645 struct rx_connection *cb_in = NULL;
1647 caps.Capabilities_val = NULL;
1649 haddr = rxr_HostOf(tcon);
1650 hport = rxr_PortOf(tcon);
1653 rx_DestroyConnection(cb_in);
1656 if (caps.Capabilities_val)
1657 free(caps.Capabilities_val);
1658 caps.Capabilities_val = NULL;
1659 caps.Capabilities_len = 0;
1662 if (h_Lookup_r(haddr, hport, &host))
1664 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
1665 if (host && !identP && !(host->Console & 1)) {
1666 /* This is a new connection, and we already have a host
1667 * structure for this address. Verify that the identity
1668 * of the caller matches the identity in the host structure.
1670 if ((host->hostFlags & HWHO_INPROGRESS) &&
1671 h_threadquota(host->lock.num_waiting)) {
1677 if (!(host->hostFlags & ALTADDR) ||
1678 (host->hostFlags & HOSTDELETED)) {
1679 /* Another thread is doing initialization
1680 * or this host was deleted while we
1681 * waited for the lock. */
1684 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1685 host, afs_inet_ntoa_r(host->host, hoststr),
1686 ntohs(host->port)));
1690 host->hostFlags |= HWHO_INPROGRESS;
1691 host->hostFlags &= ~ALTADDR;
1693 /* We received a new connection from an IP address/port
1694 * that is associated with 'host' but the address/port of
1695 * the callback connection does not have to match it.
1696 * If there is a match, we can use the existing callback
1697 * connection to verify the UUID. If they do not match
1698 * we need to use a new callback connection to verify the
1699 * UUID of the incoming caller and perhaps use the old
1700 * callback connection to verify that the old address/port
1704 cb_conn = host->callback_rxcon;
1705 rx_GetConnection(cb_conn);
1707 if (haddr == host->host && hport == host->port) {
1708 /* The existing callback connection matches the
1709 * incoming connection so just use it.
1712 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1713 if (code == RXGEN_OPCODE)
1714 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1716 /* We do not have a match. Create a new connection
1717 * for the new addr/port and use multi_Rx to probe
1718 * both of them simultaneously.
1721 sc = rxnull_NewClientSecurityObject();
1722 cb_in = rx_NewConnection(haddr, hport, 1, sc, 0);
1723 rx_SetConnDeadTime(cb_in, 50);
1724 rx_SetConnHardDeadTime(cb_in, AFS_HARDDEADTIME);
1727 RXAFSCB_TellMeAboutYourself(cb_in, &interf, &caps);
1728 if (code == RXGEN_OPCODE)
1729 code = RXAFSCB_WhoAreYou(cb_in, &interf);
1731 rx_PutConnection(cb_conn);
1734 if ((code == RXGEN_OPCODE) ||
1735 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1736 identP = (struct Identity *)malloc(sizeof(struct Identity));
1738 ViceLogThenPanic(0, ("Failed malloc in h_GetHost_r\n"));
1741 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1742 if (cb_in == NULL) {
1743 /* The host on this connection was unable to respond to
1744 * the WhoAreYou. We will treat this as a new connection
1745 * from the existing host. The worst that can happen is
1746 * that we maintain some extra callback state information */
1747 if (host->interface) {
1749 ("Host %" AFS_PTR_FMT " (%s:%d) used to support WhoAreYou, deleting.\n",
1751 afs_inet_ntoa_r(host->host, hoststr),
1752 ntohs(host->port)));
1753 host->hostFlags |= HOSTDELETED;
1754 host->hostFlags &= ~HWHO_INPROGRESS;
1761 /* The incoming connection does not support WhoAreYou but
1762 * the original one might have. Use removeAddress_r() to
1763 * remove this addr/port from the host that was found.
1764 * If there are no more addresses left for the host it
1765 * will be deleted. Then we retry.
1767 removeAddress_r(host, haddr, hport);
1768 host->hostFlags &= ~HWHO_INPROGRESS;
1769 host->hostFlags |= ALTADDR;
1775 } else if (code == 0) {
1777 identP = (struct Identity *)malloc(sizeof(struct Identity));
1779 ViceLogThenPanic(0, ("Failed malloc in h_GetHost_r\n"));
1782 identP->uuid = interf.uuid;
1783 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1784 /* Check whether the UUID on this connection matches
1785 * the UUID in the host structure. If they don't match
1786 * then this is not the same host as before. */
1787 if (!host->interface
1788 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid)) {
1791 ("Uuid doesn't match connection (%s:%d).\n",
1792 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport)));
1793 removeAddress_r(host, haddr, hport);
1796 ("Uuid doesn't match host %" AFS_PTR_FMT " (%s:%d).\n",
1797 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1799 removeAddress_r(host, host->host, host->port);
1801 host->hostFlags &= ~HWHO_INPROGRESS;
1802 host->hostFlags |= ALTADDR;
1808 /* the UUID matched the client at the incoming addr/port
1809 * but this is not the address of the active callback
1810 * connection. Try that connection and see if the client
1811 * is still there and if the reported UUID is the same.
1814 afsUUID uuid = host->interface->uuid;
1815 cb_conn = host->callback_rxcon;
1816 rx_GetConnection(cb_conn);
1817 rx_SetConnDeadTime(cb_conn, 2);
1818 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1820 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1822 rx_SetConnDeadTime(cb_conn, 50);
1823 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1824 rx_PutConnection(cb_conn);
1827 /* The primary address is either not responding or
1828 * is not the client we are looking for. Need to
1829 * remove the primary address and add swap in the new
1830 * callback connection, and destroy the old one.
1832 struct rx_connection *rxconn;
1833 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
1835 afs_inet_ntoa_r(host->host, hoststr),
1836 ntohs(host->port),code2));
1839 * make sure we add and then remove. otherwise, we
1840 * might end up with no valid interfaces after the
1841 * remove and the host will have been marked deleted.
1843 addInterfaceAddr_r(host, haddr, hport);
1844 removeInterfaceAddr_r(host, host->host, host->port);
1847 rxconn = host->callback_rxcon;
1848 host->callback_rxcon = cb_in;
1853 * If rx_DestroyConnection calls h_FreeConnection we
1854 * will deadlock on the host_glock_mutex. Work around
1855 * the problem by unhooking the client from the
1856 * connection before destroying the connection.
1858 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
1859 rx_DestroyConnection(rxconn);
1865 /* A callback to the incoming connection address is failing.
1866 * Assume that the addr/port is no longer associated with the host
1867 * returned by h_Lookup_r.
1870 ("CB: WhoAreYou failed for connection (%s:%d) , error %d\n",
1871 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport), code));
1872 removeAddress_r(host, haddr, hport);
1873 host->hostFlags &= ~HWHO_INPROGRESS;
1874 host->hostFlags |= ALTADDR;
1878 rx_DestroyConnection(cb_in);
1883 ("CB: WhoAreYou failed for host %" AFS_PTR_FMT " (%s:%d), error %d\n",
1884 host, afs_inet_ntoa_r(host->host, hoststr),
1885 ntohs(host->port), code));
1886 host->hostFlags |= VENUSDOWN;
1889 if (caps.Capabilities_val
1890 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1891 host->hostFlags |= HERRORTRANS;
1893 host->hostFlags &= ~(HERRORTRANS);
1894 host->hostFlags |= ALTADDR;
1895 host->hostFlags &= ~HWHO_INPROGRESS;
1898 if (!(host->hostFlags & ALTADDR)) {
1899 /* another thread is doing the initialisation */
1901 ("Host %" AFS_PTR_FMT " (%s:%d) waiting for host-init to complete\n",
1902 host, afs_inet_ntoa_r(host->host, hoststr),
1903 ntohs(host->port)));
1907 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1908 host, afs_inet_ntoa_r(host->host, hoststr),
1909 ntohs(host->port)));
1913 /* We need to check whether the identity in the host structure
1914 * matches the identity on the connection. If they don't match
1915 * then treat this a new host. */
1916 if (!(host->Console & 1)
1917 && ((!identP->valid && host->interface)
1918 || (identP->valid && !host->interface)
1920 && !afs_uuid_equal(&identP->uuid,
1921 &host->interface->uuid)))) {
1922 char uuid1[128], uuid2[128];
1924 afsUUID_to_string(&identP->uuid, uuid1, 127);
1925 if (host->interface)
1926 afsUUID_to_string(&host->interface->uuid, uuid2, 127);
1928 ("CB: new identity for host %p (%s:%d), "
1929 "deleting(%x %p %s %s)\n",
1930 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1931 identP->valid, host->interface,
1932 identP->valid ? uuid1 : "no_uuid",
1933 host->interface ? uuid2 : "no_uuid"));
1935 /* The host in the cache is not the host for this connection */
1937 host->hostFlags |= HOSTDELETED;
1943 host = h_Alloc_r(tcon); /* returned held and locked */
1944 h_gethostcps_r(host, FT_ApproxTime());
1945 if (!(host->Console & 1)) {
1947 cb_conn = host->callback_rxcon;
1948 rx_GetConnection(cb_conn);
1949 host->hostFlags |= HWHO_INPROGRESS;
1952 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1953 if (code == RXGEN_OPCODE)
1954 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1955 rx_PutConnection(cb_conn);
1958 if ((code == RXGEN_OPCODE) ||
1959 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1962 (struct Identity *)malloc(sizeof(struct Identity));
1967 ViceLogThenPanic(0, ("Failed malloc in h_GetHost_r\n"));
1971 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1973 ("Host %" AFS_PTR_FMT " (%s:%d) does not support WhoAreYou.\n",
1974 host, afs_inet_ntoa_r(host->host, hoststr),
1975 ntohs(host->port)));
1977 } else if (code == 0) {
1980 (struct Identity *)malloc(sizeof(struct Identity));
1985 ViceLogThenPanic(0, ("Failed malloc in h_GetHost_r\n"));
1989 identP->uuid = interf.uuid;
1991 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1993 ("WhoAreYou success on host %" AFS_PTR_FMT " (%s:%d)\n",
1994 host, afs_inet_ntoa_r(host->host, hoststr),
1995 ntohs(host->port)));
1997 if (code == 0 && !identP->valid) {
1998 cb_conn = host->callback_rxcon;
1999 rx_GetConnection(cb_conn);
2001 code = RXAFSCB_InitCallBackState(cb_conn);
2002 rx_PutConnection(cb_conn);
2005 } else if (code == 0) {
2006 oldHost = h_LookupUuid_r(&identP->uuid);
2011 if (oldHost->hostFlags & HOSTDELETED) {
2012 h_Unlock_r(oldHost);
2013 h_Release_r(oldHost);
2021 oldHost->hostFlags |= HWHO_INPROGRESS;
2023 if (oldHost->interface) {
2025 afsUUID uuid = oldHost->interface->uuid;
2026 cb_conn = oldHost->callback_rxcon;
2027 rx_GetConnection(cb_conn);
2028 rx_SetConnDeadTime(cb_conn, 2);
2029 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
2031 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
2033 rx_SetConnDeadTime(cb_conn, 50);
2034 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
2035 rx_PutConnection(cb_conn);
2038 /* The primary address is either not responding or
2039 * is not the client we are looking for.
2040 * MultiProbeAlternateAddress_r() will remove the
2041 * alternate interfaces that do not have the same
2043 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
2045 afs_inet_ntoa_r(oldHost->host, hoststr),
2046 ntohs(oldHost->port),code2));
2047 MultiProbeAlternateAddress_r(oldHost);
2054 /* This is a new address for an existing host. Update
2055 * the list of interfaces for the existing host and
2056 * delete the host structure we just allocated. */
2058 /* prevent warnings while manipulating interface lists */
2059 host->hostFlags |= HOSTDELETED;
2061 if (oldHost->host != haddr || oldHost->port != hport) {
2062 struct rx_connection *rxconn;
2065 ("CB: Host %" AFS_PTR_FMT " (%s:%d) has new addr %s:%d\n",
2067 afs_inet_ntoa_r(oldHost->host, hoststr2),
2068 ntohs(oldHost->port),
2069 afs_inet_ntoa_r(haddr, hoststr),
2072 * add then remove. otherwise the host may get marked
2073 * deleted if we removed the only valid address.
2075 addInterfaceAddr_r(oldHost, haddr, hport);
2076 if (probefail || oldHost->host == haddr) {
2078 * The probe failed which means that the old
2079 * address is either unreachable or is not the
2080 * same host we were just contacted by. We will
2081 * also remove addresses if only the port has
2082 * changed because that indicates the client
2085 removeInterfaceAddr_r(oldHost, oldHost->host, oldHost->port);
2088 struct Interface *interface = oldHost->interface;
2089 int number = oldHost->interface->numberOfInterfaces;
2090 for (i = 0; i < number; i++) {
2091 if (interface->interface[i].addr == haddr &&
2092 interface->interface[i].port != hport) {
2094 * We have just been contacted by a client
2095 * that has been seen from behind a NAT
2096 * and at least one other address.
2098 removeInterfaceAddr_r(oldHost, haddr,
2099 interface->interface[i].port);
2104 h_AddHostToAddrHashTable_r(haddr, hport, oldHost);
2105 oldHost->host = haddr;
2106 oldHost->port = hport;
2107 rxconn = oldHost->callback_rxcon;
2108 oldHost->callback_rxcon = host->callback_rxcon;
2109 host->callback_rxcon = rxconn;
2111 /* don't destroy rxconn here; let h_TossStuff_r
2112 * take care of that via h_Release_r below */
2114 host->hostFlags &= ~HWHO_INPROGRESS;
2116 /* release host because it was allocated by h_Alloc_r */
2119 /* the new host is held and locked */
2121 /* This really is a new host */
2122 h_AddHostToUuidHashTable_r(&identP->uuid, host);
2123 cb_conn = host->callback_rxcon;
2124 rx_GetConnection(cb_conn);
2127 RXAFSCB_InitCallBackState3(cb_conn,
2129 rx_PutConnection(cb_conn);
2134 ("InitCallBackState3 success on host %" AFS_PTR_FMT " (%s:%d)\n",
2135 host, afs_inet_ntoa_r(host->host, hoststr),
2136 ntohs(host->port)));
2137 osi_Assert(interfValid == 1);
2138 initInterfaceAddr_r(host, &interf);
2144 ("CB: RCallBackConnectBack failed for %" AFS_PTR_FMT " (%s:%d)\n",
2145 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
2146 host->hostFlags |= VENUSDOWN;
2149 ("CB: RCallBackConnectBack succeeded for %" AFS_PTR_FMT " (%s:%d)\n",
2150 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
2151 host->hostFlags |= RESETDONE;
2154 if (caps.Capabilities_val
2155 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
2156 host->hostFlags |= HERRORTRANS;
2158 host->hostFlags &= ~(HERRORTRANS);
2159 host->hostFlags |= ALTADDR; /* host structure initialization complete */
2160 host->hostFlags &= ~HWHO_INPROGRESS;
2165 if (caps.Capabilities_val)
2166 free(caps.Capabilities_val);
2167 caps.Capabilities_val = NULL;
2168 caps.Capabilities_len = 0;
2170 rx_DestroyConnection(cb_in);
2178 static char localcellname[PR_MAXNAMELEN + 1];
2179 char local_realms[AFS_NUM_LREALMS][AFS_REALM_SZ];
2180 int num_lrealms = -1;
2184 h_InitHostPackage(void)
2186 memset(&nulluuid, 0, sizeof(afsUUID));
2187 afsconf_GetLocalCell(confDir, localcellname, PR_MAXNAMELEN);
2188 if (num_lrealms == -1) {
2190 for (i=0; i<AFS_NUM_LREALMS; i++) {
2191 if (afs_krb_get_lrealm(local_realms[i], i) != 0 /*KSUCCESS*/)
2197 ("afs_krb_get_lrealm failed, using %s.\n",
2199 strncpy(local_realms[0], localcellname, AFS_REALM_SZ);
2205 /* initialize the rest of the local realms to nullstring for debugging */
2206 for (; i<AFS_NUM_LREALMS; i++)
2207 local_realms[i][0] = '\0';
2209 rxcon_ident_key = rx_KeyCreate((rx_destructor_t) free);
2210 rxcon_client_key = rx_KeyCreate((rx_destructor_t) 0);
2211 MUTEX_INIT(&host_glock_mutex, "host glock", MUTEX_DEFAULT, 0);
2215 MapName_r(char *aname, char *acell, afs_int32 * aval)
2220 afs_int32 anamelen, cnamelen;
2224 anamelen = strlen(aname);
2225 if (anamelen >= PR_MAXNAMELEN)
2226 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
2228 lnames.namelist_len = 1;
2229 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
2230 lids.idlist_len = 0;
2231 lids.idlist_val = NULL;
2233 cnamelen = strlen(acell);
2235 if (afs_is_foreign_ticket_name(aname, NULL, acell, localcellname)) {
2237 ("MapName: cell is foreign. cell=%s, localcell=%s, localrealms={%s,%s,%s,%s}\n",
2238 acell, localcellname, local_realms[0],local_realms[1],local_realms[2],local_realms[3]));
2239 if ((anamelen + cnamelen + 1) >= PR_MAXNAMELEN) {
2241 ("MapName: Name too long, using AnonymousID for %s@%s\n",
2243 *aval = AnonymousID;
2246 foreign = 1; /* attempt cross-cell authentication */
2247 tname = (char *)malloc(PR_MAXNAMELEN);
2249 ViceLogThenPanic(0, ("Failed malloc in MapName_r\n"));
2251 strcpy(tname, aname);
2252 tname[anamelen] = '@';
2253 strcpy(tname + anamelen + 1, acell);
2254 lnames.namelist_val = (prname *) tname;
2259 code = hpr_NameToId(&lnames, &lids);
2262 if (lids.idlist_val) {
2263 *aval = lids.idlist_val[0];
2264 if (*aval == AnonymousID) {
2266 ("MapName: NameToId on %s returns anonymousID\n",
2267 lnames.namelist_val[0]));
2269 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
2272 ("MapName: NameToId on '%s' is unknown\n",
2273 lnames.namelist_val[0]));
2279 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
2287 /* NOTE: this returns the client with a Write lock and a refCount */
2289 h_ID2Client(afs_int32 vid)
2291 struct client *client;
2296 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
2297 if (host->hostFlags & HOSTDELETED)
2299 for (client = host->FirstClient; client; client = client->next) {
2300 if (!client->deleted && client->ViceId == vid) {
2303 ObtainWriteLock(&client->lock);
2308 if (count != hostCount) {
2309 ViceLog(0, ("h_ID2Client found %d of %d hosts\n", count, hostCount));
2310 } else if (host != NULL) {
2311 ViceLog(0, ("h_ID2Client found more than %d hosts\n", hostCount));
2312 ShutDownAndCore(PANIC);
2320 * Called by the server main loop. Returns a h_Held client, which must be
2321 * released later the main loop. Allocates a client if the matching one
2322 * isn't around. The client is returned with its reference count incremented
2323 * by one. The caller must call h_ReleaseClient_r when finished with
2326 * The refCount on client->host is returned incremented. h_ReleaseClient_r
2327 * does not decrement the refCount on client->host.
2330 h_FindClient_r(struct rx_connection *tcon)
2332 struct client *client;
2333 struct host *host = NULL;
2334 struct client *oldClient;
2335 afs_int32 viceid = 0;
2339 #if (64-MAXKTCNAMELEN)
2340 ticket name length != 64
2344 char uname[PR_MAXNAMELEN];
2345 char tcell[MAXKTCREALMLEN];
2349 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2350 if (client && client->sid == rxr_CidOf(tcon)
2351 && client->VenusEpoch == rxr_GetEpoch(tcon)
2352 && !(client->host->hostFlags & HOSTDELETED)) {
2355 h_Hold_r(client->host);
2356 if (!client->deleted && client->prfail != 2) {
2357 /* Could add shared lock on client here */
2358 /* note that we don't have to lock entry in this path to
2359 * ensure CPS is initialized, since we don't call rx_SetSpecific
2360 * until initialization is done, and we only get here if
2361 * rx_GetSpecific located the client structure.
2366 ObtainWriteLock(&client->lock); /* released at end */
2372 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
2374 ("FindClient: authenticating connection: authClass=%d\n",
2376 if (authClass == 1) {
2377 /* A bcrypt tickets, no longer supported */
2378 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
2379 viceid = AnonymousID;
2380 expTime = 0x7fffffff;
2381 } else if (authClass == 2) {
2384 /* kerberos ticket */
2385 code = rxkad_GetServerInfo(tcon, /*level */ 0, (afs_uint32 *)&expTime,
2386 tname, tinst, tcell, &kvno);
2388 ViceLog(1, ("Failed to get rxkad ticket info\n"));
2389 viceid = AnonymousID;
2390 expTime = 0x7fffffff;
2392 int ilen = strlen(tinst);
2394 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
2395 tname, tinst, tcell, expTime, kvno));
2396 strncpy(uname, tname, sizeof(uname));
2398 if (strlen(uname) + 1 + ilen >= sizeof(uname))
2401 strcat(uname, tinst);
2403 /* translate the name to a vice id */
2404 code = MapName_r(uname, tcell, &viceid);
2408 ("failed to map name=%s, cell=%s -> code=%d\n", uname,
2411 viceid = AnonymousID;
2412 expTime = 0x7fffffff;
2416 viceid = AnonymousID; /* unknown security class */
2417 expTime = 0x7fffffff;
2420 if (!client) { /* loop */
2421 host = h_GetHost_r(tcon); /* Returns with incremented refCount */
2427 /* First try to find the client structure */
2428 for (client = host->FirstClient; client; client = client->next) {
2429 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2430 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2433 ObtainWriteLock(&client->lock);
2439 /* Still no client structure - get one */
2442 if (host->hostFlags & HOSTDELETED) {
2447 /* Retry to find the client structure */
2448 for (client = host->FirstClient; client; client = client->next) {
2449 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2450 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2452 goto retryfirstclient;
2457 ObtainWriteLock(&client->lock);
2458 client->refCount = 1;
2459 client->host = host;
2460 #if FS_STATS_DETAILED
2461 client->InSameNetwork = host->InSameNetwork;
2462 #endif /* FS_STATS_DETAILED */
2463 client->ViceId = viceid;
2464 client->expTime = expTime; /* rx only */
2465 client->authClass = authClass; /* rx only */
2466 client->sid = rxr_CidOf(tcon);
2467 client->VenusEpoch = rxr_GetEpoch(tcon);
2468 client->CPS.prlist_val = NULL;
2469 client->CPS.prlist_len = 0;
2473 client->prfail = fail;
2475 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
2476 client->CPS.prlist_len = 0;
2477 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID))
2478 free(client->CPS.prlist_val);
2479 client->CPS.prlist_val = NULL;
2480 client->ViceId = viceid;
2481 client->expTime = expTime;
2483 if (viceid == ANONYMOUSID) {
2484 client->CPS.prlist_len = AnonCPS.prlist_len;
2485 client->CPS.prlist_val = AnonCPS.prlist_val;
2488 code = hpr_GetCPS(viceid, &client->CPS);
2493 ("pr_GetCPS failed(%d) for user %d, host %" AFS_PTR_FMT " (%s:%d)\n",
2494 code, viceid, client->host,
2495 afs_inet_ntoa_r(client->host->host,hoststr),
2496 ntohs(client->host->port)));
2498 /* Although ubik_Call (called by pr_GetCPS) traverses thru
2499 * all protection servers and reevaluates things if no
2500 * sync server or quorum is found we could still end up
2501 * with one of these errors. In such case we would like to
2502 * reevaluate the rpc call to find if there's cps for this
2503 * guy. We treat other errors (except network failures
2504 * ones - i.e. code < 0) as an indication that there is no
2505 * CPS for this host. Ideally we could like to deal this
2506 * problem the other way around (i.e. if code == NOCPS
2507 * ignore else retry next time) but the problem is that
2508 * there're other errors (i.e. EPERM) for which we don't
2509 * want to retry and we don't know the whole code list!
2511 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
2515 /* the disabling of system:administrators is so iffy and has so many
2516 * possible failure modes that we will disable it again */
2517 /* Turn off System:Administrator for safety
2518 * if (AL_IsAMember(SystemId, client->CPS) == 0)
2519 * osi_Assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
2522 /* Now, tcon may already be set to a rock, since we blocked with no host
2523 * or client locks set above in pr_GetCPS (XXXX some locking is probably
2524 * required). So, before setting the RPC's rock, we should disconnect
2525 * the RPC from the other client structure's rock.
2527 oldClient = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2528 if (oldClient && oldClient != client && oldClient->sid == rxr_CidOf(tcon)
2529 && oldClient->VenusEpoch == rxr_GetEpoch(tcon)) {
2531 if (!oldClient->deleted) {
2532 /* if we didn't create it, it's not ours to put back */
2534 ViceLog(0, ("FindClient: stillborn client %p(%x); "
2535 "conn %p (host %s:%d) had client %p(%x)\n",
2536 client, client->sid, tcon,
2537 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2538 ntohs(rxr_PortOf(tcon)),
2539 oldClient, oldClient->sid));
2540 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2541 free(client->CPS.prlist_val);
2542 client->CPS.prlist_val = NULL;
2543 client->CPS.prlist_len = 0;
2545 /* We should perhaps check for 0 here */
2547 ReleaseWriteLock(&client->lock);
2552 oldClient->refCount++;
2554 ObtainWriteLock(&oldClient->lock);
2558 ViceLog(0, ("FindClient: deleted client %p(%x) already had "
2559 "conn %p (host %s:%d), stolen by client %p(%x)\n",
2560 oldClient, oldClient->sid, tcon,
2561 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2562 ntohs(rxr_PortOf(tcon)),
2563 client, client->sid));
2564 /* rx_SetSpecific will be done immediately below */
2567 /* Avoid chaining in more than once. */
2571 if (host->hostFlags & HOSTDELETED) {
2576 client->host = NULL;
2578 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2579 free(client->CPS.prlist_val);
2580 client->CPS.prlist_val = NULL;
2581 client->CPS.prlist_len = 0;
2584 ReleaseWriteLock(&client->lock);
2589 client->next = host->FirstClient;
2590 host->FirstClient = client;
2592 CurrentConnections++; /* increment number of connections */
2594 rx_SetSpecific(tcon, rxcon_client_key, client);
2595 ReleaseWriteLock(&client->lock);
2599 } /*h_FindClient_r */
2602 h_ReleaseClient_r(struct client *client)
2604 osi_Assert(client->refCount > 0);
2611 * Sigh: this one is used to get the client AGAIN within the individual
2612 * server routines. This does not bother h_Holding the host, since
2613 * this is assumed already have been done by the server main loop.
2614 * It does check tokens, since only the server routines can return the
2615 * VICETOKENDEAD error code
2618 GetClient(struct rx_connection *tcon, struct client **cp)
2620 struct client *client;
2625 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2626 if (client == NULL) {
2628 ("GetClient: no client in conn %p (host %s:%d), VBUSYING\n",
2629 tcon, afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2630 ntohs(rxr_PortOf(tcon))));
2634 if (rxr_CidOf(tcon) != client->sid || rxr_GetEpoch(tcon) != client->VenusEpoch) {
2636 ("GetClient: tcon %p tcon sid %d client sid %d\n",
2637 tcon, rxr_CidOf(tcon), client->sid));
2641 if (client && client->LastCall > client->expTime && client->expTime) {
2643 ("Token for %s at %s:%d expired %d\n", h_UserName(client),
2644 afs_inet_ntoa_r(client->host->host, hoststr),
2645 ntohs(client->host->port), client->expTime));
2647 return VICETOKENDEAD;
2657 PutClient(struct client **cp)
2663 h_ReleaseClient_r(*cp);
2670 /* Client user name for short term use. Note that this is NOT inexpensive */
2672 h_UserName(struct client *client)
2674 static char User[PR_MAXNAMELEN + 1];
2678 lids.idlist_len = 1;
2679 lids.idlist_val = (afs_int32 *) malloc(1 * sizeof(afs_int32));
2680 if (!lids.idlist_val) {
2681 ViceLogThenPanic(0, ("Failed malloc in h_UserName\n"));
2683 lnames.namelist_len = 0;
2684 lnames.namelist_val = (prname *) 0;
2685 lids.idlist_val[0] = client->ViceId;
2686 if (hpr_IdToName(&lids, &lnames)) {
2687 /* We need to free id we alloced above! */
2688 free(lids.idlist_val);
2689 return "*UNKNOWN USER NAME*";
2691 strncpy(User, lnames.namelist_val[0], PR_MAXNAMELEN);
2692 free(lids.idlist_val);
2693 free(lnames.namelist_val);
2702 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
2703 CEs, CEBlocks, HTs, HTBlocks));
2709 h_PrintClient(struct host *host, void *rock)
2711 StreamHandle_t *file = (StreamHandle_t *)rock;
2712 struct client *client;
2717 time_t LastCall, expTime;
2721 LastCall = host->LastCall;
2722 if (host->hostFlags & HOSTDELETED) {
2726 strftime(tbuffer, sizeof(tbuffer), "%a %b %d %T %Y",
2727 localtime_r(&LastCall, &tm));
2728 snprintf(tmpStr, sizeof tmpStr, "Host %s:%d down = %d, LastCall %s\n",
2729 afs_inet_ntoa_r(host->host, hoststr),
2730 ntohs(host->port), (host->hostFlags & VENUSDOWN),
2732 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2733 for (client = host->FirstClient; client; client = client->next) {
2734 if (!client->deleted) {
2735 expTime = client->expTime;
2736 strftime(tbuffer, sizeof(tbuffer), "%a %b %d %T %Y",
2737 localtime_r(&expTime, &tm));
2738 snprintf(tmpStr, sizeof tmpStr,
2739 " user id=%d, name=%s, sl=%s till %s\n",
2740 client->ViceId, h_UserName(client),
2741 client->authClass ? "Authenticated"
2742 : "Not authenticated",
2743 client->authClass ? tbuffer : "No Limit");
2744 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2745 snprintf(tmpStr, sizeof tmpStr, " CPS-%d is [",
2746 client->CPS.prlist_len);
2747 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2748 if (client->CPS.prlist_val) {
2749 for (i = 0; i < client->CPS.prlist_len; i++) {
2750 snprintf(tmpStr, sizeof tmpStr, " %d",
2751 client->CPS.prlist_val[i]);
2752 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2755 sprintf(tmpStr, "]\n");
2756 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2762 } /*h_PrintClient */
2767 * Print a list of clients, with last security level and token value seen,
2771 h_PrintClients(void)
2778 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
2782 ("Couldn't create client dump file %s\n",
2783 AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2786 now = FT_ApproxTime();
2787 strftime(tbuffer, sizeof(tbuffer), "%a %b %d %T %Y",
2788 localtime_r(&now, &tm));
2789 snprintf(tmpStr, sizeof tmpStr, "List of active users at %s\n\n",
2791 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2792 h_Enumerate(h_PrintClient, (char *)file);
2793 STREAM_REALLYCLOSE(file);
2794 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2801 h_DumpHost(struct host *host, void *rock)
2803 StreamHandle_t *file = (StreamHandle_t *)rock;
2810 snprintf(tmpStr, sizeof tmpStr,
2811 "ip:%s port:%d hidx:%d cbid:%d lock:%x last:%u active:%u "
2812 "down:%d del:%d cons:%d cldel:%d\n\t hpfailed:%d hcpsCall:%u "
2814 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
2815 host->index, host->cblist, CheckLock(&host->lock),
2816 host->LastCall, host->ActiveCall, (host->hostFlags & VENUSDOWN),
2817 host->hostFlags & HOSTDELETED, host->Console,
2818 host->hostFlags & CLIENTDELETED, host->hcpsfailed,
2820 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2821 if (host->hcps.prlist_val)
2822 for (i = 0; i < host->hcps.prlist_len; i++) {
2823 snprintf(tmpStr, sizeof tmpStr, " %d", host->hcps.prlist_val[i]);
2824 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2826 sprintf(tmpStr, "] [");
2827 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2828 if (host->interface)
2829 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
2831 sprintf(tmpStr, " %s:%d",
2832 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
2833 ntohs(host->interface->interface[i].port));
2834 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2836 sprintf(tmpStr, "] refCount:%d hostFlags:%hu\n", host->refCount, host->hostFlags);
2837 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2849 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
2856 ("Couldn't create host dump file %s\n",
2857 AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2860 now = FT_ApproxTime();
2861 strftime(tbuffer, sizeof(tbuffer), "%a %b %d %T %Y",
2862 localtime_r(&now, &tm));
2863 snprintf(tmpStr, sizeof tmpStr, "List of active hosts at %s\n\n", tbuffer);
2864 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2865 h_Enumerate(h_DumpHost, (char *)file);
2866 STREAM_REALLYCLOSE(file);
2867 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2871 #ifdef AFS_DEMAND_ATTACH_FS
2874 * host state serialization
2876 static int h_stateFillHeader(struct host_state_header * hdr);
2877 static int h_stateCheckHeader(struct host_state_header * hdr);
2878 static int h_stateAllocMap(struct fs_dump_state * state);
2879 static int h_stateSaveHost(struct host * host, void *rock);
2880 static int h_stateRestoreHost(struct fs_dump_state * state);
2881 static int h_stateRestoreIndex(struct host * h, void *rock);
2882 static int h_stateVerifyHost(struct host * h, void *rock);
2883 static int h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h,
2884 afs_uint32 addr, afs_uint16 port, int valid);
2885 static int h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h);
2886 static void h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out);
2887 static void h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out);
2890 /* this procedure saves all host state to disk for fast startup */
2892 h_stateSave(struct fs_dump_state * state)
2894 AssignInt64(state->eof_offset, &state->hdr->h_offset);
2897 ViceLog(0, ("h_stateSave: hostCount=%d\n", hostCount));
2899 /* invalidate host state header */
2900 memset(state->h_hdr, 0, sizeof(struct host_state_header));
2902 if (fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2903 sizeof(struct host_state_header))) {
2908 fs_stateIncEOF(state, sizeof(struct host_state_header));
2910 h_Enumerate_r(h_stateSaveHost, hostList, (char *)state);
2915 h_stateFillHeader(state->h_hdr);
2917 /* write the real header to disk */
2918 state->bail = fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2919 sizeof(struct host_state_header));
2926 * host state serialization
2928 * this procedure restores all host state from a disk for fast startup
2931 h_stateRestore(struct fs_dump_state * state)
2935 /* seek to the right position and read in the host state header */
2936 if (fs_stateReadHeader(state, &state->hdr->h_offset, state->h_hdr,
2937 sizeof(struct host_state_header))) {
2942 /* check the validity of the header */
2943 if (h_stateCheckHeader(state->h_hdr)) {
2948 records = state->h_hdr->records;
2950 if (h_stateAllocMap(state)) {
2955 /* iterate over records restoring host state */
2956 for (i=0; i < records; i++) {
2957 if (h_stateRestoreHost(state) != 0) {
2968 h_stateRestoreIndices(struct fs_dump_state * state)
2970 h_Enumerate_r(h_stateRestoreIndex, hostList, (char *)state);
2975 h_stateRestoreIndex(struct host * h, void *rock)
2977 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2978 if (cb_OldToNew(state, h->cblist, &h->cblist)) {
2979 return H_ENUMERATE_BAIL(0);
2985 h_stateVerify(struct fs_dump_state * state)
2987 h_Enumerate_r(h_stateVerifyHost, hostList, (char *)state);
2992 h_stateVerifyHost(struct host * h, void* rock)
2994 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2998 ViceLog(0, ("h_stateVerifyHost: error: NULL host pointer in linked list\n"));
2999 return H_ENUMERATE_BAIL(0);
3003 for (i = h->interface->numberOfInterfaces-1; i >= 0; i--) {
3004 if (h_stateVerifyAddrHash(state, h, h->interface->interface[i].addr,
3005 h->interface->interface[i].port,
3006 h->interface->interface[i].valid)) {
3010 if (h_stateVerifyUuidHash(state, h)) {
3013 } else if (h_stateVerifyAddrHash(state, h, h->host, h->port, 1)) {
3017 if (cb_stateVerifyHCBList(state, h)) {
3025 * verify a host is either in, or absent from, the addr hash table.
3027 * @param[in] state fs dump state
3028 * @param[in] h host we're dealing with
3029 * @param[in] addr addr to look for (NBO)
3030 * @param[in] port port to look for (NBO)
3031 * @param[in] valid 1 if we're verifying that the specified addr and port
3032 * in the hash table point to the specified host. 0 if we're
3033 * verifying that the specified addr and port do NOT point
3034 * to the specified host
3036 * @return operation status
3037 * @retval 1 failed to verify, bail out
3038 * @retval 0 verified successfully, all is well
3041 h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h,
3042 afs_uint32 addr, afs_uint16 port, int valid)
3044 int ret = 0, found = 0;
3045 struct host *host = NULL;
3046 struct h_AddrHashChain *chain;
3047 int index = h_HashIndex(addr);
3051 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
3052 host = chain->hostPtr;
3054 afs_inet_ntoa_r(addr, tmp);
3055 ViceLog(0, ("h_stateVerifyAddrHash: error: addr hash chain has NULL host ptr (lookup addr %s)\n", tmp));
3059 if ((chain->addr == addr) && (chain->port == port)) {
3062 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr hash entry "
3063 "points to different host struct (%d, %d)\n",
3064 h->index, host->index));
3065 state->flags.warnings_generated = 1;
3069 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s:%u is "
3070 "marked invalid, but points to the containing "
3071 "host\n", afs_inet_ntoa_r(addr, tmp),
3072 (unsigned)htons(port)));
3080 if (chain_len > FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN) {
3081 ViceLog(0, ("h_stateVerifyAddrHash: error: hash chain length exceeds %d; assuming there's a loop\n",
3082 FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN));
3089 if (!found && valid) {
3090 afs_inet_ntoa_r(addr, tmp);
3091 if (state->mode == FS_STATE_LOAD_MODE) {
3092 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s:%u not found in hash\n",
3093 tmp, (unsigned)htons(port)));
3097 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr %s:%u not found in hash\n",
3098 tmp, (unsigned)htons(port)));
3099 state->flags.warnings_generated = 1;
3108 h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h)
3110 int ret = 0, found = 0;
3111 struct host *host = NULL;
3112 struct h_UuidHashChain *chain;
3113 afsUUID * uuidp = &h->interface->uuid;
3114 int index = h_UuidHashIndex(uuidp);
3118 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
3119 host = chain->hostPtr;
3121 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
3122 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid hash chain has NULL host ptr (lookup uuid %s)\n", tmp));
3126 if (host->interface &&
3127 afs_uuid_equal(&host->interface->uuid, uuidp)) {
3129 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid hash entry points to different host struct (%d, %d)\n",
3130 h->index, host->index));
3131 state->flags.warnings_generated = 1;
3136 if (chain_len > FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN) {
3137 ViceLog(0, ("h_stateVerifyUuidHash: error: hash chain length exceeds %d; assuming there's a loop\n",
3138 FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN));
3146 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
3147 if (state->mode == FS_STATE_LOAD_MODE) {
3148 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid %s not found in hash\n", tmp));
3152 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid %s not found in hash\n", tmp));
3153 state->flags.warnings_generated = 1;
3161 /* create the host state header structure */
3163 h_stateFillHeader(struct host_state_header * hdr)
3165 hdr->stamp.magic = HOST_STATE_MAGIC;
3166 hdr->stamp.version = HOST_STATE_VERSION;
3170 /* check the contents of the host state header structure */
3172 h_stateCheckHeader(struct host_state_header * hdr)
3176 if (hdr->stamp.magic != HOST_STATE_MAGIC) {
3177 ViceLog(0, ("check_host_state_header: invalid state header\n"));
3180 else if (hdr->stamp.version != HOST_STATE_VERSION) {
3181 ViceLog(0, ("check_host_state_header: unknown version number\n"));
3187 /* allocate the host id mapping table */
3189 h_stateAllocMap(struct fs_dump_state * state)
3191 state->h_map.len = state->h_hdr->index_max + 1;
3192 state->h_map.entries = (struct idx_map_entry_t *)
3193 calloc(state->h_map.len, sizeof(struct idx_map_entry_t));
3194 return (state->h_map.entries != NULL) ? 0 : 1;
3197 /* function called by h_Enumerate to save a host to disk */
3199 h_stateSaveHost(struct host * host, void* rock)
3201 struct fs_dump_state *state = (struct fs_dump_state *) rock;
3202 int if_len=0, hcps_len=0;
3203 struct hostDiskEntry hdsk;
3204 struct host_state_entry_header hdr;
3205 struct Interface * ifp = NULL;
3206 afs_int32 * hcps = NULL;
3207 struct iovec iov[4];
3210 memset(&hdr, 0, sizeof(hdr));
3212 if (state->h_hdr->index_max < host->index) {
3213 state->h_hdr->index_max = host->index;
3216 h_hostToDiskEntry_r(host, &hdsk);
3217 if (host->interface) {
3218 if_len = sizeof(struct Interface) +
3219 ((host->interface->numberOfInterfaces-1) * sizeof(struct AddrPort));
3220 ifp = (struct Interface *) malloc(if_len);
3221 osi_Assert(ifp != NULL);
3222 memcpy(ifp, host->interface, if_len);
3223 hdr.interfaces = host->interface->numberOfInterfaces;
3224 iov[iovcnt].iov_base = (char *) ifp;
3225 iov[iovcnt].iov_len = if_len;
3228 if (host->hcps.prlist_val) {
3229 hdr.hcps = host->hcps.prlist_len;
3230 hcps_len = hdr.hcps * sizeof(afs_int32);
3231 hcps = (afs_int32 *) malloc(hcps_len);
3232 osi_Assert(hcps != NULL);
3233 memcpy(hcps, host->hcps.prlist_val, hcps_len);
3234 iov[iovcnt].iov_base = (char *) hcps;
3235 iov[iovcnt].iov_len = hcps_len;
3239 if (hdsk.index > state->h_hdr->index_max)
3240 state->h_hdr->index_max = hdsk.index;
3242 hdr.len = sizeof(struct host_state_entry_header) +
3243 sizeof(struct hostDiskEntry) + if_len + hcps_len;
3244 hdr.magic = HOST_STATE_ENTRY_MAGIC;
3246 iov[0].iov_base = (char *) &hdr;
3247 iov[0].iov_len = sizeof(hdr);
3248 iov[1].iov_base = (char *) &hdsk;
3249 iov[1].iov_len = sizeof(struct hostDiskEntry);
3251 if (fs_stateWriteV(state, iov, iovcnt)) {
3252 ViceLog(0, ("h_stateSaveHost: failed to save host %d", host->index));
3256 fs_stateIncEOF(state, hdr.len);
3258 state->h_hdr->records++;
3265 return H_ENUMERATE_BAIL(0);
3270 /* restores a host from disk */
3272 h_stateRestoreHost(struct fs_dump_state * state)
3274 int ifp_len=0, hcps_len=0, bail=0;
3275 struct host_state_entry_header hdr;
3276 struct hostDiskEntry hdsk;
3277 struct host *host = NULL;
3278 struct Interface *ifp = NULL;
3279 afs_int32 * hcps = NULL;
3280 struct iovec iov[3];
3283 if (fs_stateRead(state, &hdr, sizeof(hdr))) {
3284 ViceLog(0, ("h_stateRestoreHost: failed to read host entry header from dump file '%s'\n",
3290 if (hdr.magic != HOST_STATE_ENTRY_MAGIC) {
3291 ViceLog(0, ("h_stateRestoreHost: fileserver state dump file '%s' is corrupt.\n",
3297 iov[0].iov_base = (char *) &hdsk;
3298 iov[0].iov_len = sizeof(struct hostDiskEntry);
3300 if (hdr.interfaces) {
3301 ifp_len = sizeof(struct Interface) +
3302 ((hdr.interfaces-1) * sizeof(struct AddrPort));
3303 ifp = (struct Interface *) malloc(ifp_len);
3304 osi_Assert(ifp != NULL);
3305 iov[iovcnt].iov_base = (char *) ifp;
3306 iov[iovcnt].iov_len = ifp_len;
3310 hcps_len = hdr.hcps * sizeof(afs_int32);
3311 hcps = (afs_int32 *) malloc(hcps_len);
3312 osi_Assert(hcps != NULL);
3313 iov[iovcnt].iov_base = (char *) hcps;
3314 iov[iovcnt].iov_len = hcps_len;
3318 if ((ifp_len + hcps_len + sizeof(hdsk) + sizeof(hdr)) != hdr.len) {
3319 ViceLog(0, ("h_stateRestoreHost: host entry header length fields are inconsistent\n"));
3324 if (fs_stateReadV(state, iov, iovcnt)) {
3325 ViceLog(0, ("h_stateRestoreHost: failed to read host entry\n"));
3330 if (!hdr.hcps && hdsk.hcps_valid) {
3331 /* valid, zero-length host cps ; does this ever happen? */
3332 hcps = (afs_int32 *) malloc(sizeof(afs_int32));
3333 osi_Assert(hcps != NULL);
3337 osi_Assert(host != NULL);
3340 host->interface = ifp;
3343 host->hcps.prlist_val = hcps;
3344 host->hcps.prlist_len = hdr.hcps;
3347 h_diskEntryToHost_r(&hdsk, host);
3348 h_SetupCallbackConn_r(host);
3350 h_AddHostToAddrHashTable_r(host->host, host->port, host);
3353 for (i = ifp->numberOfInterfaces-1; i >= 0; i--) {
3354 if (ifp->interface[i].valid &&
3355 !(ifp->interface[i].addr == host->host &&
3356 ifp->interface[i].port == host->port)) {
3357 h_AddHostToAddrHashTable_r(ifp->interface[i].addr,
3358 ifp->interface[i].port,
3362 h_AddHostToUuidHashTable_r(&ifp->uuid, host);
3364 h_InsertList_r(host);
3366 /* setup host id map entry */
3367 state->h_map.entries[hdsk.index].old_idx = hdsk.index;
3368 state->h_map.entries[hdsk.index].new_idx = host->index;
3380 /* serialize a host structure to disk */
3382 h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out)
3384 out->host = in->host;
3385 out->port = in->port;
3386 out->hostFlags = in->hostFlags;
3387 out->Console = in->Console;
3388 out->hcpsfailed = in->hcpsfailed;
3389 out->LastCall = in->LastCall;
3390 out->ActiveCall = in->ActiveCall;
3391 out->cpsCall = in->cpsCall;
3392 out->cblist = in->cblist;
3393 #ifdef FS_STATS_DETAILED
3394 out->InSameNetwork = in->InSameNetwork;
3397 /* special fields we save, but are not memcpy'd back on restore */
3398 out->index = in->index;
3399 out->hcps_len = in->hcps.prlist_len;
3400 out->hcps_valid = (in->hcps.prlist_val == NULL) ? 0 : 1;
3403 /* restore a host structure from disk */
3405 h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out)
3407 out->host = in->host;
3408 out->port = in->port;
3409 out->hostFlags = in->hostFlags;
3410 out->Console = in->Console;
3411 out->hcpsfailed = in->hcpsfailed;
3412 out->LastCall = in->LastCall;
3413 out->ActiveCall = in->ActiveCall;
3414 out->cpsCall = in->cpsCall;
3415 out->cblist = in->cblist;
3416 #ifdef FS_STATS_DETAILED
3417 out->InSameNetwork = in->InSameNetwork;
3421 /* index translation routines */
3423 h_OldToNew(struct fs_dump_state * state, afs_uint32 old, afs_uint32 * new)
3427 /* hosts use a zero-based index, so old==0 is valid */
3429 if (old >= state->h_map.len) {
3430 ViceLog(0, ("h_OldToNew: index %d is out of range\n", old));
3432 } else if (state->h_map.entries[old].old_idx != old) { /* sanity check */
3433 ViceLog(0, ("h_OldToNew: index %d points to an invalid host record\n", old));
3436 *new = state->h_map.entries[old].new_idx;
3441 #endif /* AFS_DEMAND_ATTACH_FS */
3445 * This counts the number of workstations, the number of active workstations,
3446 * and the number of workstations declared "down" (i.e. not heard from
3447 * recently). An active workstation has received a call since the cutoff
3448 * time argument passed.
3451 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
3454 int num = 0, active = 0, del = 0;
3458 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
3459 if (!(host->hostFlags & HOSTDELETED)) {
3461 if (host->ActiveCall > cutofftime)
3463 if (host->hostFlags & VENUSDOWN)
3467 if (count != hostCount) {
3468 ViceLog(0, ("h_GetWorkStats found %d of %d hosts\n", count, hostCount));
3469 } else if (host != NULL) {
3470 ViceLog(0, ("h_GetWorkStats found more than %d hosts\n", hostCount));
3471 ShutDownAndCore(PANIC);
3481 } /*h_GetWorkStats */
3484 h_GetWorkStats64(afs_uint64 *nump, afs_uint64 *activep, afs_uint64 *delp,
3485 afs_int32 cutofftime)
3487 int num, active, del;
3488 h_GetWorkStats(&num, &active, &del, cutofftime);
3497 /*------------------------------------------------------------------------
3498 * PRIVATE h_ClassifyAddress
3501 * Given a target IP address and a candidate IP address (both
3502 * in host byte order), classify the candidate into one of three
3503 * buckets in relation to the target by bumping the counters passed
3507 * a_targetAddr : Target address.
3508 * a_candAddr : Candidate address.
3509 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
3510 * addresses are either in the same network
3511 * or the same subnet.
3512 * a_diffSubnetP : ...when the candidate is in a different
3514 * a_diffNetworkP : ...when the candidate is in a different
3521 * The target and candidate addresses are both in host byte
3522 * order, NOT network byte order, when passed in.
3526 *------------------------------------------------------------------------*/
3529 h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
3530 afs_int32 * a_sameNetOrSubnetP, afs_int32 * a_diffSubnetP,
3531 afs_int32 * a_diffNetworkP)
3532 { /*h_ClassifyAddress */
3534 afs_uint32 targetNet;
3535 afs_uint32 targetSubnet;
3537 afs_uint32 candSubnet;
3540 * Put bad values into the subnet info to start with.
3542 targetSubnet = (afs_uint32) 0;
3543 candSubnet = (afs_uint32) 0;
3546 * Pull out the network and subnetwork numbers from the target
3547 * and candidate addresses. We can short-circuit this whole
3548 * affair if the target and candidate addresses are not of the
3551 if (IN_CLASSA(a_targetAddr)) {
3552 if (!(IN_CLASSA(a_candAddr))) {
3553 (*a_diffNetworkP)++;
3556 targetNet = a_targetAddr & IN_CLASSA_NET;
3557 candNet = a_candAddr & IN_CLASSA_NET;
3558 if (IN_SUBNETA(a_targetAddr))
3559 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
3560 if (IN_SUBNETA(a_candAddr))
3561 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
3562 } else if (IN_CLASSB(a_targetAddr)) {
3563 if (!(IN_CLASSB(a_candAddr))) {
3564 (*a_diffNetworkP)++;
3567 targetNet = a_targetAddr & IN_CLASSB_NET;
3568 candNet = a_candAddr & IN_CLASSB_NET;
3569 if (IN_SUBNETB(a_targetAddr))
3570 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
3571 if (IN_SUBNETB(a_candAddr))
3572 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
3573 } /*Class B target */
3574 else if (IN_CLASSC(a_targetAddr)) {
3575 if (!(IN_CLASSC(a_candAddr))) {
3576 (*a_diffNetworkP)++;
3579 targetNet = a_targetAddr & IN_CLASSC_NET;
3580 candNet = a_candAddr & IN_CLASSC_NET;
3583 * Note that class C addresses can't have subnets,
3584 * so we leave the defaults untouched.
3586 } /*Class C target */
3588 targetNet = a_targetAddr;
3589 candNet = a_candAddr;
3590 } /*Class D address */
3593 * Now, simply compare the extracted net and subnet values for
3594 * the two addresses (which at this point are known to be of the
3597 if (targetNet == candNet) {
3598 if (targetSubnet == candSubnet)
3599 (*a_sameNetOrSubnetP)++;
3603 (*a_diffNetworkP)++;
3605 } /*h_ClassifyAddress */
3608 /*------------------------------------------------------------------------
3609 * EXPORTED h_GetHostNetStats
3612 * Iterate through the host table, and classify each (non-deleted)
3613 * host entry into ``proximity'' categories (same net or subnet,
3614 * different subnet, different network).
3617 * a_numHostsP : Set to total number of (non-deleted) hosts.
3618 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
3619 * a_diffSubnetP : Set to # hosts on diff subnet as server.
3620 * a_diffNetworkP : Set to # hosts on diff network as server.
3626 * We only count non-deleted hosts. The storage pointed to by our
3627 * parameters is zeroed upon entry.
3631 *------------------------------------------------------------------------*/
3634 h_GetHostNetStats(afs_int32 * a_numHostsP, afs_int32 * a_sameNetOrSubnetP,
3635 afs_int32 * a_diffSubnetP, afs_int32 * a_diffNetworkP)
3636 { /*h_GetHostNetStats */
3638 struct host *hostP; /*Ptr to current host entry */
3639 afs_uint32 currAddr_HBO; /*Curr host addr, host byte order */
3643 * Clear out the storage pointed to by our parameters.
3645 *a_numHostsP = (afs_int32) 0;
3646 *a_sameNetOrSubnetP = (afs_int32) 0;
3647 *a_diffSubnetP = (afs_int32) 0;
3648 *a_diffNetworkP = (afs_int32) 0;
3651 for (count = 0, hostP = hostList; hostP && count < hostCount; hostP = hostP->next, count++) {
3652 if (!(hostP->hostFlags & HOSTDELETED)) {
3654 * Bump the number of undeleted host entries found.
3655 * In classifying the current entry's address, make
3656 * sure to first convert to host byte order.
3659 currAddr_HBO = (afs_uint32) ntohl(hostP->host);
3660 h_ClassifyAddress(FS_HostAddr_HBO, currAddr_HBO,
3661 a_sameNetOrSubnetP, a_diffSubnetP,
3663 } /*Only look at non-deleted hosts */
3664 } /*For each host record hashed to this index */
3665 if (count != hostCount) {
3666 ViceLog(0, ("h_GetHostNetStats found %d of %d hosts\n", count, hostCount));
3667 } else if (hostP != NULL) {
3668 ViceLog(0, ("h_GetHostNetStats found more than %d hosts\n", hostCount));
3669 ShutDownAndCore(PANIC);
3672 } /*h_GetHostNetStats */
3674 static afs_uint32 checktime;
3675 static afs_uint32 clientdeletetime;
3676 static struct AFSFid zerofid;
3680 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
3681 * Since it can serialize them, and pile up, it should be a separate LWP
3682 * from other events.
3686 CheckHost(struct host *host, int flags, void *rock)
3688 struct client *client;
3689 struct rx_connection *cb_conn = NULL;
3692 #ifdef AFS_DEMAND_ATTACH_FS
3693 /* kill the checkhost lwp ASAP during shutdown */
3695 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3697 return H_ENUMERATE_BAIL(flags);
3702 /* Host is held by h_Enumerate */
3704 for (client = host->FirstClient; client; client = client->next) {
3705 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3706 client->deleted = 1;
3707 host->hostFlags |= CLIENTDELETED;
3710 if (host->LastCall < checktime) {
3712 if (!(host->hostFlags & HOSTDELETED)) {
3713 host->hostFlags |= HWHO_INPROGRESS;
3714 cb_conn = host->callback_rxcon;
3715 rx_GetConnection(cb_conn);
3716 if (host->LastCall < clientdeletetime) {
3717 host->hostFlags |= HOSTDELETED;
3718 if (!(host->hostFlags & VENUSDOWN)) {
3719 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3720 if (host->interface) {
3723 RXAFSCB_InitCallBackState3(cb_conn,
3729 RXAFSCB_InitCallBackState(cb_conn);
3732 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3735 (void)afs_inet_ntoa_r(host->host, hoststr);
3737 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3738 hoststr, ntohs(host->port)));
3739 host->hostFlags |= VENUSDOWN;
3741 /* Note: it's safe to delete hosts even if they have call
3742 * back state, because break delayed callbacks (called when a
3743 * message is received from the workstation) will always send a
3744 * break all call backs to the workstation if there is no
3749 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3751 (void)afs_inet_ntoa_r(host->host, hoststr);
3752 if (host->interface) {
3753 afsUUID uuid = host->interface->uuid;
3755 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3758 if (MultiProbeAlternateAddress_r(host)) {
3759 ViceLog(0,("CheckHost: Probing all interfaces of host %s:%d failed, code %d\n",
3760 hoststr, ntohs(host->port), code));
3761 host->hostFlags |= VENUSDOWN;
3766 code = RXAFSCB_Probe(cb_conn);
3770 ("CheckHost: Probe failed for host %s:%d, code %d\n",
3771 hoststr, ntohs(host->port), code));
3772 host->hostFlags |= VENUSDOWN;
3778 rx_PutConnection(cb_conn);
3781 host->hostFlags &= ~HWHO_INPROGRESS;
3792 CheckHost_r(struct host *host, void *dummy)
3794 struct client *client;
3795 struct rx_connection *cb_conn = NULL;
3798 #ifdef AFS_DEMAND_ATTACH_FS
3799 /* kill the checkhost lwp ASAP during shutdown */
3801 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3803 return H_ENUMERATE_BAIL(0);
3808 /* Host is held by h_Enumerate_r */
3809 for (client = host->FirstClient; client; client = client->next) {
3810 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3811 client->deleted = 1;
3812 host->hostFlags |= CLIENTDELETED;
3815 if (host->LastCall < checktime) {
3817 if (!(host->hostFlags & HOSTDELETED)) {
3818 host->hostFlags |= HWHO_INPROGRESS;
3819 cb_conn = host->callback_rxcon;
3820 rx_GetConnection(cb_conn);
3821 if (host->LastCall < clientdeletetime) {
3822 host->hostFlags |= HOSTDELETED;
3823 if (!(host->hostFlags & VENUSDOWN)) {
3824 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3825 if (host->interface) {
3828 RXAFSCB_InitCallBackState3(cb_conn,
3834 RXAFSCB_InitCallBackState(cb_conn);
3837 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3840 (void)afs_inet_ntoa_r(host->host, hoststr);
3842 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3843 hoststr, ntohs(host->port)));
3844 host->hostFlags |= VENUSDOWN;
3846 /* Note: it's safe to delete hosts even if they have call
3847 * back state, because break delayed callbacks (called when a
3848 * message is received from the workstation) will always send a
3849 * break all call backs to the workstation if there is no
3854 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3856 (void)afs_inet_ntoa_r(host->host, hoststr);
3857 if (host->interface) {
3858 afsUUID uuid = host->interface->uuid;
3860 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3863 if (MultiProbeAlternateAddress_r(host)) {
3864 ViceLog(0,("CheckHost_r: Probing all interfaces of host %s:%d failed, code %d\n",
3865 hoststr, ntohs(host->port), code));
3866 host->hostFlags |= VENUSDOWN;
3871 code = RXAFSCB_Probe(cb_conn);
3875 ("CheckHost_r: Probe failed for host %s:%d, code %d\n",
3876 hoststr, ntohs(host->port), code));
3877 host->hostFlags |= VENUSDOWN;
3883 rx_PutConnection(cb_conn);
3886 host->hostFlags &= ~HWHO_INPROGRESS;
3896 * Set VenusDown for any hosts that have not had a call in 15 minutes and
3897 * don't respond to a probe. Note that VenusDown can only be cleared if
3898 * a message is received from the host (see ServerLWP in file.c).
3899 * Delete hosts that have not had any calls in 1 hour, clients that
3900 * have not had any calls in 15 minutes.
3902 * This routine is called roughly every 5 minutes.
3907 afs_uint32 now = FT_ApproxTime();
3909 memset(&zerofid, 0, sizeof(zerofid));
3911 * Send a probe to the workstation if it hasn't been heard from in
3914 checktime = now - 15 * 60;
3915 clientdeletetime = now - 120 * 60; /* 2 hours ago */
3918 h_Enumerate_r(CheckHost_r, hostList, NULL);
3923 * This is called with host locked and held. At this point, the
3924 * hostAddrHashTable has an entry for the primary addr/port inserted
3925 * by h_Alloc_r(). No other interfaces should be considered valid.
3927 * The addresses in the interfaceAddr list are in host byte order.
3930 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
3937 struct Interface *interface;
3940 afs_uint16 port7001 = htons(7001);
3945 number = interf->numberOfInterfaces;
3946 myAddr = host->host; /* current interface address */
3947 myPort = host->port; /* current port */
3950 ("initInterfaceAddr : host %s:%d numAddr %d\n",
3951 afs_inet_ntoa_r(myAddr, hoststr), ntohs(myPort), number));
3953 /* validation checks */
3954 if (number < 0 || number > AFS_MAX_INTERFACE_ADDR) {
3956 ("Invalid number of alternate addresses is %d\n", number));
3961 * The client's notion of its own IP addresses is not reliable.
3963 * 1. The client list might contain private address ranges which
3964 * are likely to be re-used by many clients allocated addresses
3967 * 2. The client list will not include any public addresses that
3968 * are hidden by a NAT.
3970 * 3. Private address ranges that are exposed to the server will
3971 * be obtained from the rx connections that use them.
3973 * 4. Lists provided by the client are not necessarily truthful.
3974 * Many existing clients (UNIX) do not refresh the IP address
3975 * list as the actual assigned addresses change. The end result
3976 * is that they report the initial address list for the lifetime
3977 * of the process. In other words, a client can report addresses
3978 * that they are in fact not using. Adding these addresses to
3979 * the host interface list without verification is not only
3980 * pointless, it is downright dangerous.
3982 * We therefore do not add alternate addresses to the addr hash table.
3983 * We only use them for multi-rx callback breaks.
3987 * Convert IP addresses to network byte order, and remove
3988 * duplicate IP addresses from the interface list, and
3989 * determine whether or not the incoming addr/port is
3990 * listed. Note that if the address matches it is not
3991 * truly a match because the port number for the entries
3992 * in the interface list are port 7001 and the port number
3993 * for this connection might not be 7001.
3995 for (i = 0, count = 0, found = 0; i < number; i++) {
3996 interf->addr_in[i] = htonl(interf->addr_in[i]);
3997 for (j = 0; j < count; j++) {
3998 if (interf->addr_in[j] == interf->addr_in[i])
4002 interf->addr_in[count] = interf->addr_in[i];
4003 if (interf->addr_in[count] == myAddr &&
4011 * Allocate and initialize an interface structure for this host.
4014 interface = (struct Interface *)
4015 malloc(sizeof(struct Interface) +
4016 (sizeof(struct AddrPort) * (count - 1)));
4018 ViceLogThenPanic(0, ("Failed malloc in initInterfaceAddr_r 1\n"));
4020 interface->numberOfInterfaces = count;
4022 interface = (struct Interface *)
4023 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * count));
4025 ViceLogThenPanic(0, ("Failed malloc in initInterfaceAddr_r 2\n"));
4027 interface->numberOfInterfaces = count + 1;
4028 interface->interface[count].addr = myAddr;
4029 interface->interface[count].port = myPort;
4030 interface->interface[count].valid = 1;
4033 for (i = 0; i < count; i++) {
4035 interface->interface[i].addr = interf->addr_in[i];
4036 /* We store the port as 7001 because the addresses reported by
4037 * TellMeAboutYourself and WhoAreYou RPCs are only valid if they
4038 * are coming from fully connected hosts (no NAT/PATs)
4040 interface->interface[i].port = port7001;
4041 interface->interface[i].valid =
4042 (interf->addr_in[i] == myAddr && port7001 == myPort) ? 1 : 0;
4045 interface->uuid = interf->uuid;
4047 osi_Assert(!host->interface);
4048 host->interface = interface;
4050 if (LogLevel >= 125) {
4051 afsUUID_to_string(&interface->uuid, uuidstr, 127);
4053 ViceLog(125, ("--- uuid %s\n", uuidstr));
4054 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
4055 ViceLog(125, ("--- alt address %s:%d\n",
4056 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
4057 ntohs(host->interface->interface[i].port)));
4064 /* deleted a HashChain structure for this address and host */
4065 /* returns 1 on success */
4067 h_DeleteHostFromAddrHashTable_r(afs_uint32 addr, afs_uint16 port,
4071 struct h_AddrHashChain **hp, *th;
4073 if (addr == 0 && port == 0)
4076 for (hp = &hostAddrHashTable[h_HashIndex(addr)]; (th = *hp);
4078 osi_Assert(th->hostPtr);
4079 if (th->hostPtr == host && th->addr == addr && th->port == port) {
4080 ViceLog(125, ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d)\n",
4081 host, afs_inet_ntoa_r(host->host, hoststr),
4082 ntohs(host->port)));
4089 ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) not found\n",
4090 host, afs_inet_ntoa_r(host->host, hoststr),
4091 ntohs(host->port)));
4097 ** prints out all alternate interface address for the host. The 'level'
4098 ** parameter indicates what level of debugging sets this output
4101 printInterfaceAddr(struct host *host, int level)
4106 if (host->interface) {
4107 /* check alternate addresses */
4108 number = host->interface->numberOfInterfaces;
4110 ViceLog(level, ("no-addresses "));
4112 for (i = 0; i < number; i++)
4113 ViceLog(level, ("%s:%d ", afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
4114 ntohs(host->interface->interface[i].port)));
4117 ViceLog(level, ("\n"));