2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
9 * Portions Copyright (c) 2006 Sine Nomine Associates
12 #include <afsconfig.h>
13 #include <afs/param.h>
18 #ifdef HAVE_SYS_FILE_H
23 #include <afs/afs_assert.h>
26 #include <afs/afsint.h>
27 #define FSINT_COMMON_XG
28 #include <afs/afscbint.h>
29 #include <afs/rxgen_consts.h>
31 #include <afs/errors.h>
32 #include <afs/ihandle.h>
33 #include <afs/vnode.h>
34 #include <afs/volume.h>
35 #ifdef AFS_ATHENA_STDENV
39 #include <afs/ptclient.h>
40 #include <afs/ptuser.h>
41 #include <afs/prs_fs.h>
43 #include <afs/afsutil.h>
44 #include <afs/com_err.h>
46 #include <afs/cellconfig.h>
47 #include "viced_prototypes.h"
51 #ifdef AFS_DEMAND_ATTACH_FS
52 #include "../util/afsutil_prototypes.h"
53 #include "../tviced/serialize_state.h"
54 #endif /* AFS_DEMAND_ATTACH_FS */
56 #ifdef AFS_PTHREAD_ENV
57 pthread_mutex_t host_glock_mutex;
58 #endif /* AFS_PTHREAD_ENV */
61 extern int CurrentConnections;
63 extern int AnonymousID;
64 extern prlist AnonCPS;
66 extern struct afsconf_dir *confDir; /* config dir object */
67 extern int lwps; /* the max number of server threads */
68 extern afsUUID FS_HostUUID;
71 int CEs = 0; /* active clients */
72 int CEBlocks = 0; /* number of blocks of CEs */
73 struct client *CEFree = 0; /* first free client */
74 struct host *hostList = 0; /* linked list of all hosts */
75 int hostCount = 0; /* number of hosts in hostList */
79 static struct rx_securityClass *sc = NULL;
81 static void h_SetupCallbackConn_r(struct host * host);
82 static int h_threadquota(int);
84 #define CESPERBLOCK 73
85 struct CEBlock { /* block of CESPERBLOCK file entries */
86 struct client entry[CESPERBLOCK];
89 void h_TossStuff_r(struct host *host);
92 * Make sure the subnet macros have been defined.
95 #define IN_SUBNETA(i) ((((afs_int32)(i))&0x80800000)==0x00800000)
98 #ifndef IN_CLASSA_SUBNET
99 #define IN_CLASSA_SUBNET 0xffff0000
103 #define IN_SUBNETB(i) ((((afs_int32)(i))&0xc0008000)==0x80008000)
106 #ifndef IN_CLASSB_SUBNET
107 #define IN_CLASSB_SUBNET 0xffffff00
111 /* get a new block of CEs and chain it on CEFree */
115 struct CEBlock *block;
118 block = (struct CEBlock *)malloc(sizeof(struct CEBlock));
120 ViceLog(0, ("Failed malloc in GetCEBlock\n"));
121 ShutDownAndCore(PANIC);
124 for (i = 0; i < (CESPERBLOCK - 1); i++) {
125 Lock_Init(&block->entry[i].lock);
126 block->entry[i].next = &(block->entry[i + 1]);
128 block->entry[CESPERBLOCK - 1].next = 0;
129 Lock_Init(&block->entry[CESPERBLOCK - 1].lock);
130 CEFree = (struct client *)block;
136 /* get the next available CE */
137 static struct client *
140 struct client *entry;
145 ViceLog(0, ("CEFree NULL in GetCE\n"));
146 ShutDownAndCore(PANIC);
150 CEFree = entry->next;
152 memset(entry, 0, CLIENT_TO_ZERO(entry));
158 /* return an entry to the free list */
160 FreeCE(struct client *entry)
162 entry->VenusEpoch = 0;
164 entry->next = CEFree;
171 * The HTs and HTBlocks variables were formerly static, but they are
172 * now referenced elsewhere in the FileServer.
174 int HTs = 0; /* active file entries */
175 int HTBlocks = 0; /* number of blocks of HTs */
176 static struct host *HTFree = 0; /* first free file entry */
179 * Hash tables of host pointers. We need two tables, one
180 * to map IP addresses onto host pointers, and another
181 * to map host UUIDs onto host pointers.
183 static struct h_AddrHashChain *hostAddrHashTable[h_HASHENTRIES];
184 static struct h_UuidHashChain *hostUuidHashTable[h_HASHENTRIES];
185 #define h_HashIndex(hostip) (ntohl(hostip) & (h_HASHENTRIES-1))
186 #define h_UuidHashIndex(uuidp) (((int)(afs_uuid_hash(uuidp))) & (h_HASHENTRIES-1))
188 struct HTBlock { /* block of HTSPERBLOCK file entries */
189 struct host entry[h_HTSPERBLOCK];
193 /* get a new block of HTs and chain it on HTFree */
197 struct HTBlock *block;
199 static int index = 0;
201 if (HTBlocks == h_MAXHOSTTABLES) {
202 ViceLog(0, ("h_MAXHOSTTABLES reached\n"));
203 ShutDownAndCore(PANIC);
206 block = (struct HTBlock *)malloc(sizeof(struct HTBlock));
208 ViceLog(0, ("Failed malloc in GetHTBlock\n"));
209 ShutDownAndCore(PANIC);
211 #ifdef AFS_PTHREAD_ENV
212 for (i = 0; i < (h_HTSPERBLOCK); i++)
213 CV_INIT(&block->entry[i].cond, "block entry", CV_DEFAULT, 0);
214 #endif /* AFS_PTHREAD_ENV */
215 for (i = 0; i < (h_HTSPERBLOCK); i++)
216 Lock_Init(&block->entry[i].lock);
217 for (i = 0; i < (h_HTSPERBLOCK - 1); i++)
218 block->entry[i].next = &(block->entry[i + 1]);
219 for (i = 0; i < (h_HTSPERBLOCK); i++)
220 block->entry[i].index = index++;
221 block->entry[h_HTSPERBLOCK - 1].next = 0;
222 HTFree = (struct host *)block;
223 hosttableptrs[HTBlocks++] = block->entry;
228 /* get the next available HT */
236 osi_Assert(HTFree != NULL);
238 HTFree = entry->next;
240 memset(entry, 0, HOST_TO_ZERO(entry));
246 /* return an entry to the free list */
248 FreeHT(struct host *entry)
250 entry->next = HTFree;
257 hpr_Initialize(struct ubik_client **uclient)
260 struct rx_connection *serverconns[MAXSERVERS];
261 struct rx_securityClass *sc;
262 struct afsconf_dir *tdir;
264 struct afsconf_cell info;
268 tdir = afsconf_Open(AFSDIR_SERVER_ETC_DIRPATH);
270 ViceLog(0, ("hpr_Initialize: Could not open configuration directory: %s", AFSDIR_SERVER_ETC_DIRPATH));
274 code = afsconf_GetLocalCell(tdir, cellstr, sizeof(cellstr));
276 ViceLog(0, ("hpr_Initialize: Could not get local cell. [%d]", code));
281 code = afsconf_GetCellInfo(tdir, cellstr, "afsprot", &info);
283 ViceLog(0, ("hpr_Initialize: Could not locate cell %s in %s/%s",
284 cellstr, confDir->name, AFSDIR_CELLSERVDB_FILE));
291 ViceLog(0, ("hpr_Initialize: Could not initialize rx."));
296 /* Most callers use secLevel==1, however, the fileserver uses secLevel==2
297 * to force use of the KeyFile. secLevel == 0 implies -noauth was
299 code = afsconf_ClientAuthSecure(tdir, &sc, &scIndex);
301 ViceLog(0, ("hpr_Initialize: clientauthsecure returns %d %s "
302 "(so trying noauth)", code, afs_error_message(code)));
303 scIndex = RX_SECIDX_NULL;
304 sc = rxnull_NewClientSecurityObject();
307 if (scIndex == RX_SECIDX_NULL)
308 ViceLog(0, ("hpr_Initialize: Could not get afs tokens, "
309 "running unauthenticated. [%d]", code));
311 memset(serverconns, 0, sizeof(serverconns)); /* terminate list!!! */
312 for (i = 0; i < info.numServers; i++) {
314 rx_NewConnection(info.hostAddr[i].sin_addr.s_addr,
315 info.hostAddr[i].sin_port, PRSRV,
319 code = ubik_ClientInit(serverconns, uclient);
321 ViceLog(0, ("hpr_Initialize: ubik client init failed. [%d]", code));
324 code = rxs_Release(sc);
329 hpr_End(struct ubik_client *uclient)
334 code = ubik_ClientDestroy(uclient);
340 hpr_GetHostCPS(afs_int32 host, prlist *CPS)
342 #ifdef AFS_PTHREAD_ENV
345 struct ubik_client *uclient =
346 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
349 code = hpr_Initialize(&uclient);
351 osi_Assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
357 code = ubik_PR_GetHostCPS(uclient, 0, host, CPS, &over);
358 if (code != PRSUCCESS)
361 /* do something about this, probably make a new call */
362 /* don't forget there's a hard limit in the interface */
364 "membership list for host id %d exceeds display limit\n",
369 return pr_GetHostCPS(host, CPS);
374 hpr_NameToId(namelist *names, idlist *ids)
376 #ifdef AFS_PTHREAD_ENV
379 struct ubik_client *uclient =
380 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
383 code = hpr_Initialize(&uclient);
385 osi_Assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
390 for (i = 0; i < names->namelist_len; i++)
391 stolower(names->namelist_val[i]);
392 code = ubik_PR_NameToID(uclient, 0, names, ids);
395 return pr_NameToId(names, ids);
400 hpr_IdToName(idlist *ids, namelist *names)
402 #ifdef AFS_PTHREAD_ENV
404 struct ubik_client *uclient =
405 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
408 code = hpr_Initialize(&uclient);
410 osi_Assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
415 code = ubik_PR_IDToName(uclient, 0, ids, names);
418 return pr_IdToName(ids, names);
423 hpr_GetCPS(afs_int32 id, prlist *CPS)
425 #ifdef AFS_PTHREAD_ENV
428 struct ubik_client *uclient =
429 (struct ubik_client *)pthread_getspecific(viced_uclient_key);
432 code = hpr_Initialize(&uclient);
434 osi_Assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
440 code = ubik_PR_GetCPS(uclient, 0, id, CPS, &over);
441 if (code != PRSUCCESS)
444 /* do something about this, probably make a new call */
445 /* don't forget there's a hard limit in the interface */
446 fprintf(stderr, "membership list for id %d exceeds display limit\n",
451 return pr_GetCPS(id, CPS);
455 static short consolePort = 0;
458 h_Lock_r(struct host *host)
468 * returns 1 if already locked
469 * else returns locks and returns 0
473 h_NBLock_r(struct host *host)
475 struct Lock *hostLock = &host->lock;
480 if (!(hostLock->excl_locked) && !(hostLock->readers_reading))
481 hostLock->excl_locked = WRITE_LOCK;
485 LOCK_UNLOCK(hostLock);
494 #if FS_STATS_DETAILED
495 /*------------------------------------------------------------------------
496 * PRIVATE h_AddrInSameNetwork
499 * Given a target IP address and a candidate IP address (both
500 * in host byte order), return a non-zero value (1) if the
501 * candidate address is in a different network from the target
505 * a_targetAddr : Target address.
506 * a_candAddr : Candidate address.
509 * 1 if the candidate address is in the same net as the target,
513 * The target and candidate addresses are both in host byte
514 * order, NOT network byte order, when passed in. We return
515 * our value as a character, since that's the type of field in
516 * the host structure, where this info will be stored.
520 *------------------------------------------------------------------------*/
523 h_AddrInSameNetwork(afs_uint32 a_targetAddr, afs_uint32 a_candAddr)
524 { /*h_AddrInSameNetwork */
526 afs_uint32 targetNet;
530 * Pull out the network and subnetwork numbers from the target
531 * and candidate addresses. We can short-circuit this whole
532 * affair if the target and candidate addresses are not of the
535 if (IN_CLASSA(a_targetAddr)) {
536 if (!(IN_CLASSA(a_candAddr))) {
539 targetNet = a_targetAddr & IN_CLASSA_NET;
540 candNet = a_candAddr & IN_CLASSA_NET;
541 } else if (IN_CLASSB(a_targetAddr)) {
542 if (!(IN_CLASSB(a_candAddr))) {
545 targetNet = a_targetAddr & IN_CLASSB_NET;
546 candNet = a_candAddr & IN_CLASSB_NET;
547 } /*Class B target */
548 else if (IN_CLASSC(a_targetAddr)) {
549 if (!(IN_CLASSC(a_candAddr))) {
552 targetNet = a_targetAddr & IN_CLASSC_NET;
553 candNet = a_candAddr & IN_CLASSC_NET;
554 } /*Class C target */
556 targetNet = a_targetAddr;
557 candNet = a_candAddr;
558 } /*Class D address */
561 * Now, simply compare the extracted net values for the two addresses
562 * (which at this point are known to be of the same class)
564 if (targetNet == candNet)
569 } /*h_AddrInSameNetwork */
570 #endif /* FS_STATS_DETAILED */
573 /* Assumptions: called with held host */
575 h_gethostcps_r(struct host *host, afs_int32 now)
580 /* wait if somebody else is already doing the getCPS call */
581 while (host->hostFlags & HCPS_INPROGRESS) {
582 slept = 1; /* I did sleep */
583 host->hostFlags |= HCPS_WAITING; /* I am sleeping now */
584 #ifdef AFS_PTHREAD_ENV
585 CV_WAIT(&host->cond, &host_glock_mutex);
586 #else /* AFS_PTHREAD_ENV */
587 if ((code = LWP_WaitProcess(&(host->hostFlags))) != LWP_SUCCESS)
588 ViceLog(0, ("LWP_WaitProcess returned %d\n", code));
589 #endif /* AFS_PTHREAD_ENV */
593 host->hostFlags |= HCPS_INPROGRESS; /* mark as CPSCall in progress */
594 if (host->hcps.prlist_val)
595 free(host->hcps.prlist_val); /* this is for hostaclRefresh */
596 host->hcps.prlist_val = NULL;
597 host->hcps.prlist_len = 0;
598 host->cpsCall = slept ? (FT_ApproxTime()) : (now);
601 code = hpr_GetHostCPS(ntohl(host->host), &host->hcps);
606 * Although ubik_Call (called by pr_GetHostCPS) traverses thru all protection servers
607 * and reevaluates things if no sync server or quorum is found we could still end up
608 * with one of these errors. In such case we would like to reevaluate the rpc call to
609 * find if there's cps for this guy. We treat other errors (except network failures
610 * ones - i.e. code < 0) as an indication that there is no CPS for this host. Ideally
611 * we could like to deal this problem the other way around (i.e. if code == NOCPS
612 * ignore else retry next time) but the problem is that there're other errors (i.e.
613 * EPERM) for which we don't want to retry and we don't know the whole code list!
615 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC) {
617 * We would have preferred to use a while loop and try again since ops in protected
618 * acls for this host will fail now but they'll be reevaluated on any subsequent
619 * call. The attempt to wait for a quorum/sync site or network error won't work
620 * since this problems really should only occurs during a complete fileserver
621 * restart. Since the fileserver will start before the ptservers (and thus before
622 * quorums are complete) clients will be utilizing all the fileserver's lwps!!
624 host->hcpsfailed = 1;
626 ("Warning: GetHostCPS failed (%d) for %p (%s:%d); will retry\n",
627 code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
629 host->hcpsfailed = 0;
631 ("gethost: GetHostCPS failed (%d) for %p (%s:%d); ignored\n",
632 code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
634 if (host->hcps.prlist_val)
635 free(host->hcps.prlist_val);
636 host->hcps.prlist_val = NULL;
637 host->hcps.prlist_len = 0; /* Make sure it's zero */
639 host->hcpsfailed = 0;
641 host->hostFlags &= ~HCPS_INPROGRESS;
642 /* signal all who are waiting */
643 if (host->hostFlags & HCPS_WAITING) { /* somebody is waiting */
644 host->hostFlags &= ~HCPS_WAITING;
645 #ifdef AFS_PTHREAD_ENV
646 CV_BROADCAST(&host->cond);
647 #else /* AFS_PTHREAD_ENV */
648 if ((code = LWP_NoYieldSignal(&(host->hostFlags))) != LWP_SUCCESS)
649 ViceLog(0, ("LWP_NoYieldSignal returns %d\n", code));
650 #endif /* AFS_PTHREAD_ENV */
654 /* args in net byte order */
656 h_flushhostcps(afs_uint32 hostaddr, afs_uint16 hport)
661 h_Lookup_r(hostaddr, hport, &host);
663 host->hcpsfailed = 1;
672 * Allocate a host. It will be identified by the peer (ip,port) info in the
673 * rx connection provided. The host is returned held and locked
675 #define DEF_ROPCONS 2115
678 h_Alloc_r(struct rx_connection *r_con)
680 struct servent *serverentry;
682 #if FS_STATS_DETAILED
683 afs_uint32 newHostAddr_HBO; /*New host IP addr, in host byte order */
684 #endif /* FS_STATS_DETAILED */
688 host->host = rxr_HostOf(r_con);
689 host->port = rxr_PortOf(r_con);
691 h_AddHostToAddrHashTable_r(host->host, host->port, host);
693 if (consolePort == 0) { /* find the portal number for console */
694 #if defined(AFS_OSF_ENV)
695 serverentry = getservbyname("ropcons", "");
697 serverentry = getservbyname("ropcons", 0);
700 consolePort = serverentry->s_port;
702 consolePort = htons(DEF_ROPCONS); /* Use a default */
704 if (host->port == consolePort)
706 /* Make a callback channel even for the console, on the off chance that it
707 * makes a request that causes a break call back. It shouldn't. */
708 h_SetupCallbackConn_r(host);
709 host->LastCall = host->cpsCall = host->ActiveCall = FT_ApproxTime();
711 host->hcps.prlist_val = NULL;
712 host->hcps.prlist_len = 0;
713 host->interface = NULL;
715 host->hcpsfailed = 0; /* save cycles */
716 h_gethostcps(host); /* do this under host hold/lock */
718 host->FirstClient = NULL;
721 h_InsertList_r(host); /* update global host List */
722 #if FS_STATS_DETAILED
724 * Compare the new host's IP address (in host byte order) with ours
725 * (the File Server's), remembering if they are in the same network.
727 newHostAddr_HBO = (afs_uint32) ntohl(host->host);
728 host->InSameNetwork =
729 h_AddrInSameNetwork(FS_HostAddr_HBO, newHostAddr_HBO);
730 #endif /* FS_STATS_DETAILED */
737 /* Make a callback channel even for the console, on the off chance that it
738 * makes a request that causes a break call back. It shouldn't. */
740 h_SetupCallbackConn_r(struct host * host)
743 sc = rxnull_NewClientSecurityObject();
744 host->callback_rxcon =
745 rx_NewConnection(host->host, host->port, 1, sc, 0);
746 rx_SetConnDeadTime(host->callback_rxcon, 50);
747 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
751 * Lookup a host given an IP address and UDP port number.
752 * hostaddr and hport are in network order
753 * hostaddr and hport are in network order
754 * On return, refCount is incremented.
757 h_Lookup_r(afs_uint32 haddr, afs_uint16 hport, struct host **hostp)
760 struct host *host = NULL;
761 struct h_AddrHashChain *chain;
762 int index = h_HashIndex(haddr);
763 extern int hostaclRefresh;
766 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
767 host = chain->hostPtr;
769 if (!(host->hostFlags & HOSTDELETED) && chain->addr == haddr
770 && chain->port == hport) {
771 if ((host->hostFlags & HWHO_INPROGRESS) &&
772 h_threadquota(host->lock.num_waiting)) {
778 if (host->hostFlags & HOSTDELETED) {
785 now = FT_ApproxTime(); /* always evaluate "now" */
786 if (host->hcpsfailed || (host->cpsCall + hostaclRefresh < now)) {
788 * Every hostaclRefresh period (def 2 hrs) get the new
789 * membership list for the host. Note this could be the
790 * first time that the host is added to a group. Also
791 * here we also retry on previous legitimate hcps failures.
793 * If we get here refCount is elevated.
795 h_gethostcps_r(host, now);
805 /* Lookup a host given its UUID. */
807 h_LookupUuid_r(afsUUID * uuidp)
809 struct host *host = 0;
810 struct h_UuidHashChain *chain;
811 int index = h_UuidHashIndex(uuidp);
813 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
814 host = chain->hostPtr;
816 if (!(host->hostFlags & HOSTDELETED) && host->interface
817 && afs_uuid_equal(&host->interface->uuid, uuidp)) {
825 /* h_TossStuff_r: Toss anything in the host structure (the host or
826 * clients marked for deletion. Called from h_Release_r ONLY.
827 * To be called, there must be no holds, and either host->deleted
828 * or host->clientDeleted must be set.
831 h_TossStuff_r(struct host *host)
833 struct client **cp, *client;
836 /* make sure host doesn't go away over h_NBLock_r */
839 code = h_NBLock_r(host);
841 /* don't use h_Release_r, since that may call h_TossStuff_r again */
844 /* if somebody still has this host locked */
848 ("Warning: h_TossStuff_r failed; Host %" AFS_PTR_FMT " (%s:%d) was locked.\n",
849 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
855 /* if somebody still has this host held */
856 /* we must check this _after_ h_NBLock_r, since h_NBLock_r can drop and
857 * reacquire H_LOCK */
858 if (host->refCount > 0) {
861 ("Warning: h_TossStuff_r failed; Host %" AFS_PTR_FMT " (%s:%d) was held.\n",
862 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
866 /* ASSUMPTION: rxi_FreeConnection() does not yield */
867 for (cp = &host->FirstClient; (client = *cp);) {
868 if ((host->hostFlags & HOSTDELETED) || client->deleted) {
870 ObtainWriteLockNoBlock(&client->lock, code);
874 ("Warning: h_TossStuff_r failed: Host %p (%s:%d) "
875 "client %p was locked.\n",
876 host, afs_inet_ntoa_r(host->host, hoststr),
877 ntohs(host->port), client));
881 if (client->refCount) {
884 ("Warning: h_TossStuff_r failed: Host %p (%s:%d) "
885 "client %p refcount %d.\n",
886 host, afs_inet_ntoa_r(host->host, hoststr),
887 ntohs(host->port), client, client->refCount));
888 /* This is the same thing we do if the host is locked */
889 ReleaseWriteLock(&client->lock);
892 client->CPS.prlist_len = 0;
893 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
894 free(client->CPS.prlist_val);
895 client->CPS.prlist_val = NULL;
896 CurrentConnections--;
898 ReleaseWriteLock(&client->lock);
904 /* We've just cleaned out all the deleted clients; clear the flag */
905 host->hostFlags &= ~CLIENTDELETED;
907 if (host->hostFlags & HOSTDELETED) {
908 struct rx_connection *rxconn;
909 struct AddrPort hostAddrPort;
912 if (host->Console & 1)
914 if ((rxconn = host->callback_rxcon)) {
915 host->callback_rxcon = (struct rx_connection *)0;
916 rx_DestroyConnection(rxconn);
918 if (host->hcps.prlist_val)
919 free(host->hcps.prlist_val);
920 host->hcps.prlist_val = NULL;
921 host->hcps.prlist_len = 0;
922 DeleteAllCallBacks_r(host, 1);
923 host->hostFlags &= ~RESETDONE; /* just to be safe */
925 /* if alternate addresses do not exist */
926 if (!(host->interface)) {
927 h_DeleteHostFromAddrHashTable_r(host->host, host->port, host);
929 h_DeleteHostFromUuidHashTable_r(host);
930 h_DeleteHostFromAddrHashTable_r(host->host, host->port, host);
931 /* delete the hash entry for each valid alternate addresses */
932 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
933 hostAddrPort = host->interface->interface[i];
935 * if the interface addr/port is the primary, we already
936 * removed it. If the addr/port is not valid, its not
939 if (hostAddrPort.valid &&
940 (host->host != hostAddrPort.addr ||
941 host->port != hostAddrPort.port))
942 h_DeleteHostFromAddrHashTable_r(hostAddrPort.addr, hostAddrPort.port, host);
944 free(host->interface);
945 host->interface = NULL;
946 } /* if alternate address exists */
948 h_DeleteList_r(host); /* remove host from global host List */
955 /* h_Enumerate: Calls (*proc)(host, param) for at least each host in the
956 * system at the start of the enumeration (perhaps more). Hosts may be deleted
957 * (have delete flag set); ditto for clients. refCount is always incremented
958 * before (*proc) is called.
960 * The return value of the proc is a set of flags. The proc should set
961 * H_ENUMERATE_BAIL(foo) if the enumeration of hosts should be stopped early.
964 h_Enumerate(int (*proc) (struct host*, void *), void *param)
966 struct host *host, **list;
971 if (hostCount == 0) {
975 list = (struct host **)malloc(hostCount * sizeof(struct host *));
977 ViceLogThenPanic(0, ("Failed malloc in h_Enumerate (list)\n"));
979 for (totalCount = count = 0, host = hostList;
980 host && totalCount < hostCount;
981 host = host->next, totalCount++) {
983 if (!(host->hostFlags & HOSTDELETED)) {
989 if (totalCount != hostCount) {
990 ViceLog(0, ("h_Enumerate found %d of %d hosts\n", totalCount, hostCount));
991 } else if (host != NULL) {
992 ViceLog(0, ("h_Enumerate found more than %d hosts\n", hostCount));
993 ShutDownAndCore(PANIC);
996 for (i = 0; i < count; i++) {
998 flags = (*proc) (list[i], param);
1000 h_Release_r(list[i]);
1002 /* bail out of the enumeration early */
1003 if (H_ENUMERATE_ISSET_BAIL(flags)) {
1006 ViceLog(0, ("h_Enumerate got back invalid return value %d\n", flags));
1007 ShutDownAndCore(PANIC);
1011 /* we bailed out of enumerating hosts early; we still have holds on
1012 * some of the hosts in 'list', so release them */
1015 for ( ; i < count; i++) {
1016 h_Release_r(list[i]);
1024 /* h_Enumerate_r (revised):
1025 * Calls (*proc)(host, param) for each host in hostList, starting
1026 * at enumstart. Called only under H_LOCK. Hosts may be deleted (have
1027 * delete flag set); ditto for clients. refCount is always incremented
1028 * before (*proc) is called.
1030 * @note Assumes that hostList is only prepended to, that a host is never
1031 * inserted into the middle. Otherwise this would not be guaranteed to
1034 * The return value of the proc is a set of flags. The proc should set
1035 * H_ENUMERATE_BAIL(foo) if the enumeration of hosts should be stopped early.
1038 h_Enumerate_r(int (*proc) (struct host *, void *),
1039 struct host *enumstart, void *param)
1041 struct host *host, *next;
1045 if (hostCount == 0) {
1052 /* find the first non-deleted host, so we know where to actually start
1054 for (count = 0; host && count < hostCount; count++) {
1055 if (!(host->hostFlags & HOSTDELETED)) {
1062 /* we didn't find a non-deleted host... */
1064 if (host && count >= hostCount) {
1065 /* ...because we found a loop */
1066 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", hostCount));
1067 ShutDownAndCore(PANIC);
1070 /* ...because the hostList is full of deleted hosts */
1074 h_Hold_r(enumstart);
1076 /* remember hostCount, lest it change over the potential H_LOCK drop in
1078 origHostCount = hostCount;
1080 for (count = 0, host = enumstart; host && count < origHostCount; host = next, count++) {
1083 /* find the next non-deleted host */
1084 while (next && (next->hostFlags & HOSTDELETED)) {
1086 /* inc count for the skipped-over host */
1087 if (++count > origHostCount) {
1088 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", origHostCount));
1089 ShutDownAndCore(PANIC);
1095 if (!(host->hostFlags & HOSTDELETED)) {
1097 flags = (*proc) (host, param);
1098 if (H_ENUMERATE_ISSET_BAIL(flags)) {
1099 h_Release_r(host); /* this might free up the host */
1105 ViceLog(0, ("h_Enumerate_r got back invalid return value %d\n", flags));
1106 ShutDownAndCore(PANIC);
1109 h_Release_r(host); /* this might free up the host */
1111 if (host != NULL && count >= origHostCount) {
1112 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", origHostCount));
1113 ShutDownAndCore(PANIC);
1115 } /*h_Enumerate_r */
1118 /* inserts a new HashChain structure corresponding to this UUID */
1120 h_AddHostToUuidHashTable_r(struct afsUUID *uuid, struct host *host)
1123 struct h_UuidHashChain *chain;
1124 char uuid1[128], uuid2[128];
1127 /* hash into proper bucket */
1128 index = h_UuidHashIndex(uuid);
1130 /* don't add the same entry multiple times */
1131 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
1132 if (!chain->hostPtr)
1135 if (chain->hostPtr->interface &&
1136 afs_uuid_equal(&chain->hostPtr->interface->uuid, uuid)) {
1137 if (LogLevel >= 125) {
1138 afsUUID_to_string(&chain->hostPtr->interface->uuid, uuid1,
1140 afsUUID_to_string(uuid, uuid2, 127);
1141 ViceLog(125, ("h_AddHostToUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s) exists as %s:%d (uuid %s)\n",
1143 afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1144 ntohs(chain->hostPtr->port), uuid2));
1150 /* insert into beginning of list for this bucket */
1151 chain = (struct h_UuidHashChain *)malloc(sizeof(struct h_UuidHashChain));
1153 ViceLogThenPanic(0, ("Failed malloc in h_AddHostToUuidHashTable_r\n"));
1155 chain->hostPtr = host;
1156 chain->next = hostUuidHashTable[index];
1157 hostUuidHashTable[index] = chain;
1160 afsUUID_to_string(uuid, uuid2, 127);
1162 ("h_AddHostToUuidHashTable_r: host %p (%s:%d) added as uuid %s\n",
1163 host, afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1164 ntohs(chain->hostPtr->port), uuid2));
1167 /* deletes a HashChain structure corresponding to this host */
1169 h_DeleteHostFromUuidHashTable_r(struct host *host)
1172 struct h_UuidHashChain **uhp, *uth;
1176 if (!host->interface)
1179 /* hash into proper bucket */
1180 index = h_UuidHashIndex(&host->interface->uuid);
1182 if (LogLevel >= 125)
1183 afsUUID_to_string(&host->interface->uuid, uuid1, 127);
1184 for (uhp = &hostUuidHashTable[index]; (uth = *uhp); uhp = &uth->next) {
1185 osi_Assert(uth->hostPtr);
1186 if (uth->hostPtr == host) {
1188 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d)\n",
1189 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1190 ntohs(host->port)));
1197 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d) not found\n",
1198 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1199 ntohs(host->port)));
1204 * This is called with host locked and held.
1206 * All addresses are in network byte order.
1209 invalidateInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1213 struct Interface *interface;
1214 char hoststr[16], hoststr2[16];
1217 osi_Assert(host->interface);
1219 ViceLog(125, ("invalidateInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1220 host, afs_inet_ntoa_r(host->host, hoststr),
1221 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1225 * Make sure this address is on the list of known addresses
1228 interface = host->interface;
1229 number = host->interface->numberOfInterfaces;
1230 for (i = 0; i < number; i++) {
1231 if (interface->interface[i].addr == addr &&
1232 interface->interface[i].port == port) {
1233 if (interface->interface[i].valid) {
1234 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1235 interface->interface[i].valid = 0;
1246 * This is called with host locked and held. This function differs
1247 * from removeInterfaceAddr_r in that it is called when the address
1248 * is being removed from the host regardless of whether or not there
1249 * is an interface list for the host. This function will delete the
1250 * host if there are no addresses left on it.
1252 * All addresses are in network byte order.
1255 removeAddress_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1258 char hoststr[16], hoststr2[16];
1259 struct rx_connection *rxconn;
1261 if (!host->interface || host->interface->numberOfInterfaces == 1) {
1262 if (host->host == addr && host->port == port) {
1264 ("Removing only address for host %" AFS_PTR_FMT " (%s:%d), deleting host.\n",
1265 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1266 host->hostFlags |= HOSTDELETED;
1268 * Do not remove the primary addr/port from the hash table.
1269 * It will be ignored due to the HOSTDELETED flag and will
1270 * be removed when h_TossStuff_r() cleans up the HOSTDELETED
1271 * host. Removing it here will only result in a search for
1272 * the host/addr/port in the hash chain which will fail.
1276 ("Removing address that does not belong to host %" AFS_PTR_FMT " (%s:%d).\n",
1277 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1280 if (host->host == addr && host->port == port) {
1281 removeInterfaceAddr_r(host, addr, port);
1283 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1284 if (host->interface->interface[i].valid) {
1286 ("Removed address for host %" AFS_PTR_FMT " (%s:%d), new primary interface %s:%d.\n",
1287 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1288 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr2),
1289 ntohs(host->interface->interface[i].port)));
1290 host->host = host->interface->interface[i].addr;
1291 host->port = host->interface->interface[i].port;
1292 h_AddHostToAddrHashTable_r(host->host, host->port, host);
1297 if (i == host->interface->numberOfInterfaces) {
1299 ("Removed only address for host %" AFS_PTR_FMT " (%s:%d), no valid alternate interfaces, deleting host.\n",
1300 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1301 host->hostFlags |= HOSTDELETED;
1302 /* addr/port was removed from the hash table */
1306 rxconn = host->callback_rxcon;
1307 host->callback_rxcon = NULL;
1310 rx_DestroyConnection(rxconn);
1315 sc = rxnull_NewClientSecurityObject();
1316 host->callback_rxcon =
1317 rx_NewConnection(host->host, host->port, 1, sc, 0);
1318 rx_SetConnDeadTime(host->callback_rxcon, 50);
1319 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
1322 /* not the primary addr/port, just invalidate it */
1323 invalidateInterfaceAddr_r(host, addr, port);
1331 createHostAddrHashChain_r(int index, afs_uint32 addr, afs_uint16 port, struct host *host)
1333 struct h_AddrHashChain *chain;
1336 /* insert into beginning of list for this bucket */
1337 chain = (struct h_AddrHashChain *)malloc(sizeof(struct h_AddrHashChain));
1339 ViceLogThenPanic(0, ("Failed malloc in h_AddHostToAddrHashTable_r\n"));
1341 chain->hostPtr = host;
1342 chain->next = hostAddrHashTable[index];
1345 hostAddrHashTable[index] = chain;
1346 ViceLog(125, ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " added as %s:%d\n",
1347 host, afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1351 * Resolve host address conflicts when hashing by address.
1353 * @param[in] addr an ip address of the interface
1354 * @param[in] port the port of the interface
1355 * @param[in] newHost the host being added with this address
1356 * @param[in] oldHost the host previously added with this address
1359 reconcileHosts_r(afs_uint32 addr, afs_uint16 port, struct host *newHost,
1360 struct host *oldHost)
1362 struct rx_connection *cb = NULL;
1364 struct interfaceAddr interf;
1366 afsUUID *newHostUuid = &nulluuid;
1367 afsUUID *oldHostUuid = &nulluuid;
1371 ("reconcileHosts_r: addr %s:%d newHost %" AFS_PTR_FMT " oldHost %"
1372 AFS_PTR_FMT, afs_inet_ntoa_r(addr, hoststr), ntohs(port),
1375 osi_Assert(oldHost != newHost);
1376 caps.Capabilities_val = NULL;
1379 sc = rxnull_NewClientSecurityObject();
1382 cb = rx_NewConnection(addr, port, 1, sc, 0);
1383 rx_SetConnDeadTime(cb, 50);
1384 rx_SetConnHardDeadTime(cb, AFS_HARDDEADTIME);
1389 code = RXAFSCB_TellMeAboutYourself(cb, &interf, &caps);
1390 if (code == RXGEN_OPCODE) {
1391 code = RXAFSCB_WhoAreYou(cb, &interf);
1395 if (code == RXGEN_OPCODE ||
1396 (code == 0 && afs_uuid_equal(&interf.uuid, &nulluuid))) {
1398 ("reconcileHosts_r: WhoAreYou not supported for connection (%s:%d), error %d\n",
1399 afs_inet_ntoa_r(addr, hoststr), ntohs(port), code));
1404 ("reconcileHosts_r: WhoAreYou failed for connection (%s:%d), error %d\n",
1405 afs_inet_ntoa_r(addr, hoststr), ntohs(port), code));
1409 /* Since lock was dropped, the hosts may have been deleted during the rpcs. */
1410 if ((newHost->hostFlags & HOSTDELETED)
1411 && (oldHost->hostFlags & HOSTDELETED)) {
1413 ("reconcileHosts_r: new and old hosts were deleted during probe.\n"));
1417 /* A check can be done if at least one of the hosts has a uuid. It
1418 * is an error if the hosts have the same (not null) uuid. */
1419 if ((!(newHost->hostFlags & HOSTDELETED)) && newHost->interface) {
1420 newHostUuid = &(newHost->interface->uuid);
1422 if ((!(oldHost->hostFlags & HOSTDELETED)) && oldHost->interface) {
1423 oldHostUuid = &(oldHost->interface->uuid);
1425 if (afs_uuid_equal(newHostUuid, &nulluuid) &&
1426 afs_uuid_equal(oldHostUuid, &nulluuid)) {
1428 ("reconcileHosts_r: Cannot reconcile hosts for connection (%s:%d), no uuids\n",
1429 afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1432 if (afs_uuid_equal(newHostUuid, oldHostUuid)) {
1434 ("reconcileHosts_r: Cannot reconcile hosts for connection (%s:%d), same uuids\n",
1435 afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1439 /* Determine which host should be hashed */
1440 if ((!(newHost->hostFlags & HOSTDELETED))
1441 && afs_uuid_equal(newHostUuid, &(interf.uuid))) {
1442 /* Install the new host into the hash before removing the stale
1443 * addresses. Walk the hash chain again since the hash table may have
1444 * been changed when the host lock was dropped to get the uuid. */
1445 struct h_AddrHashChain *chain;
1446 int index = h_HashIndex(addr);
1447 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1448 if (chain->addr == addr && chain->port == port) {
1449 chain->hostPtr = newHost;
1450 removeAddress_r(oldHost, addr, port);
1454 createHostAddrHashChain_r(index, addr, port, newHost);
1455 removeAddress_r(oldHost, addr, port);
1458 if ((!(oldHost->hostFlags & HOSTDELETED))
1459 && afs_uuid_equal(oldHostUuid, &(interf.uuid))) {
1460 removeAddress_r(newHost, addr, port);
1465 if (!(newHost->hostFlags & HOSTDELETED)) {
1466 removeAddress_r(newHost, addr, port);
1468 if (!(oldHost->hostFlags & HOSTDELETED)) {
1469 removeAddress_r(oldHost, addr, port);
1473 h_Release_r(newHost);
1474 h_Release_r(oldHost);
1475 rx_DestroyConnection(cb);
1479 /* inserts a new HashChain structure corresponding to this address */
1481 h_AddHostToAddrHashTable_r(afs_uint32 addr, afs_uint16 port, struct host *host)
1484 struct h_AddrHashChain *chain;
1487 /* hash into proper bucket */
1488 index = h_HashIndex(addr);
1490 /* don't add the same address:port pair entry multiple times */
1491 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1492 if (chain->addr == addr && chain->port == port) {
1493 if (chain->hostPtr == host) {
1495 ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) already hashed\n",
1496 host, afs_inet_ntoa_r(chain->addr, hoststr),
1497 ntohs(chain->port)));
1500 if (!(chain->hostPtr->hostFlags & HOSTDELETED)) {
1501 /* attempt to resolve host address collision */
1502 reconcileHosts_r(addr, port, host, chain->hostPtr);
1507 createHostAddrHashChain_r(index, addr, port, host);
1511 * This is called with host locked and held.
1512 * It is called to either validate or add an additional interface
1513 * address/port on the specified host.
1515 * All addresses are in network byte order.
1518 addInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1522 struct Interface *interface;
1523 char hoststr[16], hoststr2[16];
1526 osi_Assert(host->interface);
1529 * Make sure this address is on the list of known addresses
1532 number = host->interface->numberOfInterfaces;
1533 for (i = 0; i < number; i++) {
1534 if (host->interface->interface[i].addr == addr &&
1535 host->interface->interface[i].port == port) {
1537 ("addInterfaceAddr : found host %" AFS_PTR_FMT " (%s:%d) adding %s:%d%s\n",
1538 host, afs_inet_ntoa_r(host->host, hoststr),
1539 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1540 ntohs(port), host->interface->interface[i].valid ? "" :
1543 if (host->interface->interface[i].valid == 0) {
1544 host->interface->interface[i].valid = 1;
1545 h_AddHostToAddrHashTable_r(addr, port, host);
1551 ViceLog(125, ("addInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) adding %s:%d\n",
1552 host, afs_inet_ntoa_r(host->host, hoststr),
1553 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1556 interface = (struct Interface *)
1557 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * number));
1559 ViceLogThenPanic(0, ("Failed malloc in addInterfaceAddr_r\n"));
1561 interface->numberOfInterfaces = number + 1;
1562 interface->uuid = host->interface->uuid;
1563 for (i = 0; i < number; i++)
1564 interface->interface[i] = host->interface->interface[i];
1566 /* Add the new valid interface */
1567 interface->interface[number].addr = addr;
1568 interface->interface[number].port = port;
1569 interface->interface[number].valid = 1;
1570 h_AddHostToAddrHashTable_r(addr, port, host);
1571 free(host->interface);
1572 host->interface = interface;
1579 * This is called with host locked and held.
1581 * All addresses are in network byte order.
1584 removeInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1588 struct Interface *interface;
1589 char hoststr[16], hoststr2[16];
1592 osi_Assert(host->interface);
1594 ViceLog(125, ("removeInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1595 host, afs_inet_ntoa_r(host->host, hoststr),
1596 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1600 * Make sure this address is on the list of known addresses
1603 interface = host->interface;
1604 number = host->interface->numberOfInterfaces;
1605 for (i = 0; i < number; i++) {
1606 if (interface->interface[i].addr == addr &&
1607 interface->interface[i].port == port) {
1608 if (interface->interface[i].valid)
1609 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1611 for (; i < number; i++) {
1612 interface->interface[i] = interface->interface[i+1];
1614 interface->numberOfInterfaces = number;
1625 h_threadquota(int waiting)
1630 } else if (lwps > 32) {
1633 } else if (lwps > 16) {
1643 /* If found, host is returned with refCount incremented */
1645 h_GetHost_r(struct rx_connection *tcon)
1648 struct host *oldHost;
1650 struct interfaceAddr interf;
1651 int interfValid = 0;
1652 struct Identity *identP = NULL;
1655 char hoststr[16], hoststr2[16];
1657 struct rx_connection *cb_conn = NULL;
1658 struct rx_connection *cb_in = NULL;
1660 caps.Capabilities_val = NULL;
1662 haddr = rxr_HostOf(tcon);
1663 hport = rxr_PortOf(tcon);
1666 rx_DestroyConnection(cb_in);
1669 if (caps.Capabilities_val)
1670 free(caps.Capabilities_val);
1671 caps.Capabilities_val = NULL;
1672 caps.Capabilities_len = 0;
1675 if (h_Lookup_r(haddr, hport, &host))
1677 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
1678 if (host && !identP && !(host->Console & 1)) {
1679 /* This is a new connection, and we already have a host
1680 * structure for this address. Verify that the identity
1681 * of the caller matches the identity in the host structure.
1683 if ((host->hostFlags & HWHO_INPROGRESS) &&
1684 h_threadquota(host->lock.num_waiting)) {
1690 if (!(host->hostFlags & ALTADDR) ||
1691 (host->hostFlags & HOSTDELETED)) {
1692 /* Another thread is doing initialization
1693 * or this host was deleted while we
1694 * waited for the lock. */
1697 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1698 host, afs_inet_ntoa_r(host->host, hoststr),
1699 ntohs(host->port)));
1703 host->hostFlags |= HWHO_INPROGRESS;
1704 host->hostFlags &= ~ALTADDR;
1706 /* We received a new connection from an IP address/port
1707 * that is associated with 'host' but the address/port of
1708 * the callback connection does not have to match it.
1709 * If there is a match, we can use the existing callback
1710 * connection to verify the UUID. If they do not match
1711 * we need to use a new callback connection to verify the
1712 * UUID of the incoming caller and perhaps use the old
1713 * callback connection to verify that the old address/port
1717 cb_conn = host->callback_rxcon;
1718 rx_GetConnection(cb_conn);
1720 if (haddr == host->host && hport == host->port) {
1721 /* The existing callback connection matches the
1722 * incoming connection so just use it.
1725 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1726 if (code == RXGEN_OPCODE)
1727 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1729 /* We do not have a match. Create a new connection
1730 * for the new addr/port and use multi_Rx to probe
1731 * both of them simultaneously.
1734 sc = rxnull_NewClientSecurityObject();
1735 cb_in = rx_NewConnection(haddr, hport, 1, sc, 0);
1736 rx_SetConnDeadTime(cb_in, 50);
1737 rx_SetConnHardDeadTime(cb_in, AFS_HARDDEADTIME);
1740 RXAFSCB_TellMeAboutYourself(cb_in, &interf, &caps);
1741 if (code == RXGEN_OPCODE)
1742 code = RXAFSCB_WhoAreYou(cb_in, &interf);
1744 rx_PutConnection(cb_conn);
1747 if ((code == RXGEN_OPCODE) ||
1748 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1749 identP = (struct Identity *)malloc(sizeof(struct Identity));
1751 ViceLogThenPanic(0, ("Failed malloc in h_GetHost_r\n"));
1754 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1755 if (cb_in == NULL) {
1756 /* The host on this connection was unable to respond to
1757 * the WhoAreYou. We will treat this as a new connection
1758 * from the existing host. The worst that can happen is
1759 * that we maintain some extra callback state information */
1760 if (host->interface) {
1762 ("Host %" AFS_PTR_FMT " (%s:%d) used to support WhoAreYou, deleting.\n",
1764 afs_inet_ntoa_r(host->host, hoststr),
1765 ntohs(host->port)));
1766 host->hostFlags |= HOSTDELETED;
1767 host->hostFlags &= ~HWHO_INPROGRESS;
1774 /* The incoming connection does not support WhoAreYou but
1775 * the original one might have. Use removeAddress_r() to
1776 * remove this addr/port from the host that was found.
1777 * If there are no more addresses left for the host it
1778 * will be deleted. Then we retry.
1780 removeAddress_r(host, haddr, hport);
1781 host->hostFlags &= ~HWHO_INPROGRESS;
1782 host->hostFlags |= ALTADDR;
1788 } else if (code == 0) {
1790 identP = (struct Identity *)malloc(sizeof(struct Identity));
1792 ViceLogThenPanic(0, ("Failed malloc in h_GetHost_r\n"));
1795 identP->uuid = interf.uuid;
1796 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1797 /* Check whether the UUID on this connection matches
1798 * the UUID in the host structure. If they don't match
1799 * then this is not the same host as before. */
1800 if (!host->interface
1801 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid)) {
1804 ("Uuid doesn't match connection (%s:%d).\n",
1805 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport)));
1806 removeAddress_r(host, haddr, hport);
1809 ("Uuid doesn't match host %" AFS_PTR_FMT " (%s:%d).\n",
1810 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1812 removeAddress_r(host, host->host, host->port);
1814 host->hostFlags &= ~HWHO_INPROGRESS;
1815 host->hostFlags |= ALTADDR;
1821 /* the UUID matched the client at the incoming addr/port
1822 * but this is not the address of the active callback
1823 * connection. Try that connection and see if the client
1824 * is still there and if the reported UUID is the same.
1827 afsUUID uuid = host->interface->uuid;
1828 cb_conn = host->callback_rxcon;
1829 rx_GetConnection(cb_conn);
1830 rx_SetConnDeadTime(cb_conn, 2);
1831 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1833 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1835 rx_SetConnDeadTime(cb_conn, 50);
1836 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1837 rx_PutConnection(cb_conn);
1840 /* The primary address is either not responding or
1841 * is not the client we are looking for. Need to
1842 * remove the primary address and add swap in the new
1843 * callback connection, and destroy the old one.
1845 struct rx_connection *rxconn;
1846 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
1848 afs_inet_ntoa_r(host->host, hoststr),
1849 ntohs(host->port),code2));
1852 * make sure we add and then remove. otherwise, we
1853 * might end up with no valid interfaces after the
1854 * remove and the host will have been marked deleted.
1856 addInterfaceAddr_r(host, haddr, hport);
1857 removeInterfaceAddr_r(host, host->host, host->port);
1860 rxconn = host->callback_rxcon;
1861 host->callback_rxcon = cb_in;
1866 * If rx_DestroyConnection calls h_FreeConnection we
1867 * will deadlock on the host_glock_mutex. Work around
1868 * the problem by unhooking the client from the
1869 * connection before destroying the connection.
1871 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
1872 rx_DestroyConnection(rxconn);
1878 /* A callback to the incoming connection address is failing.
1879 * Assume that the addr/port is no longer associated with the host
1880 * returned by h_Lookup_r.
1883 ("CB: WhoAreYou failed for connection (%s:%d) , error %d\n",
1884 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport), code));
1885 removeAddress_r(host, haddr, hport);
1886 host->hostFlags &= ~HWHO_INPROGRESS;
1887 host->hostFlags |= ALTADDR;
1891 rx_DestroyConnection(cb_in);
1896 ("CB: WhoAreYou failed for host %" AFS_PTR_FMT " (%s:%d), error %d\n",
1897 host, afs_inet_ntoa_r(host->host, hoststr),
1898 ntohs(host->port), code));
1899 host->hostFlags |= VENUSDOWN;
1902 if (caps.Capabilities_val
1903 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1904 host->hostFlags |= HERRORTRANS;
1906 host->hostFlags &= ~(HERRORTRANS);
1907 host->hostFlags |= ALTADDR;
1908 host->hostFlags &= ~HWHO_INPROGRESS;
1911 if (!(host->hostFlags & ALTADDR)) {
1912 /* another thread is doing the initialisation */
1914 ("Host %" AFS_PTR_FMT " (%s:%d) waiting for host-init to complete\n",
1915 host, afs_inet_ntoa_r(host->host, hoststr),
1916 ntohs(host->port)));
1920 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1921 host, afs_inet_ntoa_r(host->host, hoststr),
1922 ntohs(host->port)));
1926 /* We need to check whether the identity in the host structure
1927 * matches the identity on the connection. If they don't match
1928 * then treat this a new host. */
1929 if (!(host->Console & 1)
1930 && ((!identP->valid && host->interface)
1931 || (identP->valid && !host->interface)
1933 && !afs_uuid_equal(&identP->uuid,
1934 &host->interface->uuid)))) {
1935 char uuid1[128], uuid2[128];
1937 afsUUID_to_string(&identP->uuid, uuid1, 127);
1938 if (host->interface)
1939 afsUUID_to_string(&host->interface->uuid, uuid2, 127);
1941 ("CB: new identity for host %p (%s:%d), "
1942 "deleting(%x %p %s %s)\n",
1943 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1944 identP->valid, host->interface,
1945 identP->valid ? uuid1 : "no_uuid",
1946 host->interface ? uuid2 : "no_uuid"));
1948 /* The host in the cache is not the host for this connection */
1950 host->hostFlags |= HOSTDELETED;
1956 host = h_Alloc_r(tcon); /* returned held and locked */
1957 h_gethostcps_r(host, FT_ApproxTime());
1958 if (!(host->Console & 1)) {
1960 cb_conn = host->callback_rxcon;
1961 rx_GetConnection(cb_conn);
1962 host->hostFlags |= HWHO_INPROGRESS;
1965 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1966 if (code == RXGEN_OPCODE)
1967 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1968 rx_PutConnection(cb_conn);
1971 if ((code == RXGEN_OPCODE) ||
1972 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1975 (struct Identity *)malloc(sizeof(struct Identity));
1980 ViceLogThenPanic(0, ("Failed malloc in h_GetHost_r\n"));
1984 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1986 ("Host %" AFS_PTR_FMT " (%s:%d) does not support WhoAreYou.\n",
1987 host, afs_inet_ntoa_r(host->host, hoststr),
1988 ntohs(host->port)));
1990 } else if (code == 0) {
1993 (struct Identity *)malloc(sizeof(struct Identity));
1998 ViceLogThenPanic(0, ("Failed malloc in h_GetHost_r\n"));
2002 identP->uuid = interf.uuid;
2004 rx_SetSpecific(tcon, rxcon_ident_key, identP);
2006 ("WhoAreYou success on host %" AFS_PTR_FMT " (%s:%d)\n",
2007 host, afs_inet_ntoa_r(host->host, hoststr),
2008 ntohs(host->port)));
2010 if (code == 0 && !identP->valid) {
2011 cb_conn = host->callback_rxcon;
2012 rx_GetConnection(cb_conn);
2014 code = RXAFSCB_InitCallBackState(cb_conn);
2015 rx_PutConnection(cb_conn);
2018 } else if (code == 0) {
2019 oldHost = h_LookupUuid_r(&identP->uuid);
2024 if (oldHost->hostFlags & HOSTDELETED) {
2025 h_Unlock_r(oldHost);
2026 h_Release_r(oldHost);
2034 oldHost->hostFlags |= HWHO_INPROGRESS;
2036 if (oldHost->interface) {
2038 afsUUID uuid = oldHost->interface->uuid;
2039 cb_conn = oldHost->callback_rxcon;
2040 rx_GetConnection(cb_conn);
2041 rx_SetConnDeadTime(cb_conn, 2);
2042 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
2044 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
2046 rx_SetConnDeadTime(cb_conn, 50);
2047 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
2048 rx_PutConnection(cb_conn);
2051 /* The primary address is either not responding or
2052 * is not the client we are looking for.
2053 * MultiProbeAlternateAddress_r() will remove the
2054 * alternate interfaces that do not have the same
2056 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
2058 afs_inet_ntoa_r(oldHost->host, hoststr),
2059 ntohs(oldHost->port),code2));
2060 MultiProbeAlternateAddress_r(oldHost);
2067 /* This is a new address for an existing host. Update
2068 * the list of interfaces for the existing host and
2069 * delete the host structure we just allocated. */
2071 /* prevent warnings while manipulating interface lists */
2072 host->hostFlags |= HOSTDELETED;
2074 if (oldHost->host != haddr || oldHost->port != hport) {
2075 struct rx_connection *rxconn;
2078 ("CB: Host %" AFS_PTR_FMT " (%s:%d) has new addr %s:%d\n",
2080 afs_inet_ntoa_r(oldHost->host, hoststr2),
2081 ntohs(oldHost->port),
2082 afs_inet_ntoa_r(haddr, hoststr),
2085 * add then remove. otherwise the host may get marked
2086 * deleted if we removed the only valid address.
2088 addInterfaceAddr_r(oldHost, haddr, hport);
2089 if (probefail || oldHost->host == haddr) {
2091 * The probe failed which means that the old
2092 * address is either unreachable or is not the
2093 * same host we were just contacted by. We will
2094 * also remove addresses if only the port has
2095 * changed because that indicates the client
2098 removeInterfaceAddr_r(oldHost, oldHost->host, oldHost->port);
2101 struct Interface *interface = oldHost->interface;
2102 int number = oldHost->interface->numberOfInterfaces;
2103 for (i = 0; i < number; i++) {
2104 if (interface->interface[i].addr == haddr &&
2105 interface->interface[i].port != hport) {
2107 * We have just been contacted by a client
2108 * that has been seen from behind a NAT
2109 * and at least one other address.
2111 removeInterfaceAddr_r(oldHost, haddr,
2112 interface->interface[i].port);
2117 h_AddHostToAddrHashTable_r(haddr, hport, oldHost);
2118 oldHost->host = haddr;
2119 oldHost->port = hport;
2120 rxconn = oldHost->callback_rxcon;
2121 oldHost->callback_rxcon = host->callback_rxcon;
2122 host->callback_rxcon = rxconn;
2124 /* don't destroy rxconn here; let h_TossStuff_r
2125 * take care of that via h_Release_r below */
2127 host->hostFlags &= ~HWHO_INPROGRESS;
2129 /* release host because it was allocated by h_Alloc_r */
2132 /* the new host is held and locked */
2134 /* This really is a new host */
2135 h_AddHostToUuidHashTable_r(&identP->uuid, host);
2136 cb_conn = host->callback_rxcon;
2137 rx_GetConnection(cb_conn);
2140 RXAFSCB_InitCallBackState3(cb_conn,
2142 rx_PutConnection(cb_conn);
2147 ("InitCallBackState3 success on host %" AFS_PTR_FMT " (%s:%d)\n",
2148 host, afs_inet_ntoa_r(host->host, hoststr),
2149 ntohs(host->port)));
2150 osi_Assert(interfValid == 1);
2151 initInterfaceAddr_r(host, &interf);
2157 ("CB: RCallBackConnectBack failed for %" AFS_PTR_FMT " (%s:%d)\n",
2158 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
2159 host->hostFlags |= VENUSDOWN;
2162 ("CB: RCallBackConnectBack succeeded for %" AFS_PTR_FMT " (%s:%d)\n",
2163 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
2164 host->hostFlags |= RESETDONE;
2167 if (caps.Capabilities_val
2168 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
2169 host->hostFlags |= HERRORTRANS;
2171 host->hostFlags &= ~(HERRORTRANS);
2172 host->hostFlags |= ALTADDR; /* host structure initialization complete */
2173 host->hostFlags &= ~HWHO_INPROGRESS;
2178 if (caps.Capabilities_val)
2179 free(caps.Capabilities_val);
2180 caps.Capabilities_val = NULL;
2181 caps.Capabilities_len = 0;
2183 rx_DestroyConnection(cb_in);
2191 static char localcellname[PR_MAXNAMELEN + 1];
2192 char local_realms[AFS_NUM_LREALMS][AFS_REALM_SZ];
2193 int num_lrealms = -1;
2197 h_InitHostPackage(void)
2199 memset(&nulluuid, 0, sizeof(afsUUID));
2200 afsconf_GetLocalCell(confDir, localcellname, PR_MAXNAMELEN);
2201 if (num_lrealms == -1) {
2203 for (i=0; i<AFS_NUM_LREALMS; i++) {
2204 if (afs_krb_get_lrealm(local_realms[i], i) != 0 /*KSUCCESS*/)
2210 ("afs_krb_get_lrealm failed, using %s.\n",
2212 strncpy(local_realms[0], localcellname, AFS_REALM_SZ);
2218 /* initialize the rest of the local realms to nullstring for debugging */
2219 for (; i<AFS_NUM_LREALMS; i++)
2220 local_realms[i][0] = '\0';
2222 rxcon_ident_key = rx_KeyCreate((rx_destructor_t) free);
2223 rxcon_client_key = rx_KeyCreate((rx_destructor_t) 0);
2224 MUTEX_INIT(&host_glock_mutex, "host glock", MUTEX_DEFAULT, 0);
2228 MapName_r(char *aname, char *acell, afs_int32 * aval)
2233 afs_int32 anamelen, cnamelen;
2237 anamelen = strlen(aname);
2238 if (anamelen >= PR_MAXNAMELEN)
2239 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
2241 lnames.namelist_len = 1;
2242 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
2243 lids.idlist_len = 0;
2244 lids.idlist_val = NULL;
2246 cnamelen = strlen(acell);
2248 if (afs_is_foreign_ticket_name(aname, NULL, acell, localcellname)) {
2250 ("MapName: cell is foreign. cell=%s, localcell=%s, localrealms={%s,%s,%s,%s}\n",
2251 acell, localcellname, local_realms[0],local_realms[1],local_realms[2],local_realms[3]));
2252 if ((anamelen + cnamelen + 1) >= PR_MAXNAMELEN) {
2254 ("MapName: Name too long, using AnonymousID for %s@%s\n",
2256 *aval = AnonymousID;
2259 foreign = 1; /* attempt cross-cell authentication */
2260 tname = (char *)malloc(PR_MAXNAMELEN);
2262 ViceLogThenPanic(0, ("Failed malloc in MapName_r\n"));
2264 strcpy(tname, aname);
2265 tname[anamelen] = '@';
2266 strcpy(tname + anamelen + 1, acell);
2267 lnames.namelist_val = (prname *) tname;
2272 code = hpr_NameToId(&lnames, &lids);
2275 if (lids.idlist_val) {
2276 *aval = lids.idlist_val[0];
2277 if (*aval == AnonymousID) {
2279 ("MapName: NameToId on %s returns anonymousID\n",
2280 lnames.namelist_val[0]));
2282 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
2285 ("MapName: NameToId on '%s' is unknown\n",
2286 lnames.namelist_val[0]));
2292 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
2300 /* NOTE: this returns the client with a Write lock and a refCount */
2302 h_ID2Client(afs_int32 vid)
2304 struct client *client;
2309 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
2310 if (host->hostFlags & HOSTDELETED)
2312 for (client = host->FirstClient; client; client = client->next) {
2313 if (!client->deleted && client->ViceId == vid) {
2316 ObtainWriteLock(&client->lock);
2321 if (count != hostCount) {
2322 ViceLog(0, ("h_ID2Client found %d of %d hosts\n", count, hostCount));
2323 } else if (host != NULL) {
2324 ViceLog(0, ("h_ID2Client found more than %d hosts\n", hostCount));
2325 ShutDownAndCore(PANIC);
2333 * Called by the server main loop. Returns a h_Held client, which must be
2334 * released later the main loop. Allocates a client if the matching one
2335 * isn't around. The client is returned with its reference count incremented
2336 * by one. The caller must call h_ReleaseClient_r when finished with
2339 * The refCount on client->host is returned incremented. h_ReleaseClient_r
2340 * does not decrement the refCount on client->host.
2343 h_FindClient_r(struct rx_connection *tcon)
2345 struct client *client;
2346 struct host *host = NULL;
2347 struct client *oldClient;
2348 afs_int32 viceid = 0;
2352 #if (64-MAXKTCNAMELEN)
2353 ticket name length != 64
2357 char uname[PR_MAXNAMELEN];
2358 char tcell[MAXKTCREALMLEN];
2362 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2363 if (client && client->sid == rxr_CidOf(tcon)
2364 && client->VenusEpoch == rxr_GetEpoch(tcon)
2365 && !(client->host->hostFlags & HOSTDELETED)) {
2368 h_Hold_r(client->host);
2369 if (!client->deleted && client->prfail != 2) {
2370 /* Could add shared lock on client here */
2371 /* note that we don't have to lock entry in this path to
2372 * ensure CPS is initialized, since we don't call rx_SetSpecific
2373 * until initialization is done, and we only get here if
2374 * rx_GetSpecific located the client structure.
2379 ObtainWriteLock(&client->lock); /* released at end */
2385 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
2387 ("FindClient: authenticating connection: authClass=%d\n",
2389 if (authClass == 1) {
2390 /* A bcrypt tickets, no longer supported */
2391 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
2392 viceid = AnonymousID;
2393 expTime = 0x7fffffff;
2394 } else if (authClass == 2) {
2397 /* kerberos ticket */
2398 code = rxkad_GetServerInfo(tcon, /*level */ 0, (afs_uint32 *)&expTime,
2399 tname, tinst, tcell, &kvno);
2401 ViceLog(1, ("Failed to get rxkad ticket info\n"));
2402 viceid = AnonymousID;
2403 expTime = 0x7fffffff;
2405 int ilen = strlen(tinst);
2407 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
2408 tname, tinst, tcell, expTime, kvno));
2409 strncpy(uname, tname, sizeof(uname));
2411 if (strlen(uname) + 1 + ilen >= sizeof(uname))
2414 strcat(uname, tinst);
2416 /* translate the name to a vice id */
2417 code = MapName_r(uname, tcell, &viceid);
2421 ("failed to map name=%s, cell=%s -> code=%d\n", uname,
2424 viceid = AnonymousID;
2425 expTime = 0x7fffffff;
2429 viceid = AnonymousID; /* unknown security class */
2430 expTime = 0x7fffffff;
2433 if (!client) { /* loop */
2434 host = h_GetHost_r(tcon); /* Returns with incremented refCount */
2440 /* First try to find the client structure */
2441 for (client = host->FirstClient; client; client = client->next) {
2442 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2443 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2446 ObtainWriteLock(&client->lock);
2452 /* Still no client structure - get one */
2455 if (host->hostFlags & HOSTDELETED) {
2460 /* Retry to find the client structure */
2461 for (client = host->FirstClient; client; client = client->next) {
2462 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2463 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2465 goto retryfirstclient;
2470 ObtainWriteLock(&client->lock);
2471 client->refCount = 1;
2472 client->host = host;
2473 #if FS_STATS_DETAILED
2474 client->InSameNetwork = host->InSameNetwork;
2475 #endif /* FS_STATS_DETAILED */
2476 client->ViceId = viceid;
2477 client->expTime = expTime; /* rx only */
2478 client->authClass = authClass; /* rx only */
2479 client->sid = rxr_CidOf(tcon);
2480 client->VenusEpoch = rxr_GetEpoch(tcon);
2481 client->CPS.prlist_val = NULL;
2482 client->CPS.prlist_len = 0;
2486 client->prfail = fail;
2488 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
2489 client->CPS.prlist_len = 0;
2490 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID))
2491 free(client->CPS.prlist_val);
2492 client->CPS.prlist_val = NULL;
2493 client->ViceId = viceid;
2494 client->expTime = expTime;
2496 if (viceid == ANONYMOUSID) {
2497 client->CPS.prlist_len = AnonCPS.prlist_len;
2498 client->CPS.prlist_val = AnonCPS.prlist_val;
2501 code = hpr_GetCPS(viceid, &client->CPS);
2506 ("pr_GetCPS failed(%d) for user %d, host %" AFS_PTR_FMT " (%s:%d)\n",
2507 code, viceid, client->host,
2508 afs_inet_ntoa_r(client->host->host,hoststr),
2509 ntohs(client->host->port)));
2511 /* Although ubik_Call (called by pr_GetCPS) traverses thru
2512 * all protection servers and reevaluates things if no
2513 * sync server or quorum is found we could still end up
2514 * with one of these errors. In such case we would like to
2515 * reevaluate the rpc call to find if there's cps for this
2516 * guy. We treat other errors (except network failures
2517 * ones - i.e. code < 0) as an indication that there is no
2518 * CPS for this host. Ideally we could like to deal this
2519 * problem the other way around (i.e. if code == NOCPS
2520 * ignore else retry next time) but the problem is that
2521 * there're other errors (i.e. EPERM) for which we don't
2522 * want to retry and we don't know the whole code list!
2524 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
2528 /* the disabling of system:administrators is so iffy and has so many
2529 * possible failure modes that we will disable it again */
2530 /* Turn off System:Administrator for safety
2531 * if (AL_IsAMember(SystemId, client->CPS) == 0)
2532 * osi_Assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
2535 /* Now, tcon may already be set to a rock, since we blocked with no host
2536 * or client locks set above in pr_GetCPS (XXXX some locking is probably
2537 * required). So, before setting the RPC's rock, we should disconnect
2538 * the RPC from the other client structure's rock.
2540 oldClient = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2541 if (oldClient && oldClient != client && oldClient->sid == rxr_CidOf(tcon)
2542 && oldClient->VenusEpoch == rxr_GetEpoch(tcon)) {
2544 if (!oldClient->deleted) {
2545 /* if we didn't create it, it's not ours to put back */
2547 ViceLog(0, ("FindClient: stillborn client %p(%x); "
2548 "conn %p (host %s:%d) had client %p(%x)\n",
2549 client, client->sid, tcon,
2550 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2551 ntohs(rxr_PortOf(tcon)),
2552 oldClient, oldClient->sid));
2553 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2554 free(client->CPS.prlist_val);
2555 client->CPS.prlist_val = NULL;
2556 client->CPS.prlist_len = 0;
2558 /* We should perhaps check for 0 here */
2560 ReleaseWriteLock(&client->lock);
2565 oldClient->refCount++;
2567 ObtainWriteLock(&oldClient->lock);
2571 ViceLog(0, ("FindClient: deleted client %p(%x) already had "
2572 "conn %p (host %s:%d), stolen by client %p(%x)\n",
2573 oldClient, oldClient->sid, tcon,
2574 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2575 ntohs(rxr_PortOf(tcon)),
2576 client, client->sid));
2577 /* rx_SetSpecific will be done immediately below */
2580 /* Avoid chaining in more than once. */
2584 if (host->hostFlags & HOSTDELETED) {
2589 client->host = NULL;
2591 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2592 free(client->CPS.prlist_val);
2593 client->CPS.prlist_val = NULL;
2594 client->CPS.prlist_len = 0;
2597 ReleaseWriteLock(&client->lock);
2602 client->next = host->FirstClient;
2603 host->FirstClient = client;
2605 CurrentConnections++; /* increment number of connections */
2607 rx_SetSpecific(tcon, rxcon_client_key, client);
2608 ReleaseWriteLock(&client->lock);
2612 } /*h_FindClient_r */
2615 h_ReleaseClient_r(struct client *client)
2617 osi_Assert(client->refCount > 0);
2624 * Sigh: this one is used to get the client AGAIN within the individual
2625 * server routines. This does not bother h_Holding the host, since
2626 * this is assumed already have been done by the server main loop.
2627 * It does check tokens, since only the server routines can return the
2628 * VICETOKENDEAD error code
2631 GetClient(struct rx_connection *tcon, struct client **cp)
2633 struct client *client;
2638 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2639 if (client == NULL) {
2641 ("GetClient: no client in conn %p (host %s:%d), VBUSYING\n",
2642 tcon, afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2643 ntohs(rxr_PortOf(tcon))));
2647 if (rxr_CidOf(tcon) != client->sid || rxr_GetEpoch(tcon) != client->VenusEpoch) {
2649 ("GetClient: tcon %p tcon sid %d client sid %d\n",
2650 tcon, rxr_CidOf(tcon), client->sid));
2654 if (client && client->LastCall > client->expTime && client->expTime) {
2656 ("Token for %s at %s:%d expired %d\n", h_UserName(client),
2657 afs_inet_ntoa_r(client->host->host, hoststr),
2658 ntohs(client->host->port), client->expTime));
2660 return VICETOKENDEAD;
2662 if (client->deleted) {
2663 ViceLog(0, ("GetClient: got deleted client, this should not happen! "
2664 "Connection will appear to have no rights; "
2665 "tcon %p sid %d epoch %d client %p host %s:%d viceid %d\n",
2666 tcon, (int)rxr_CidOf(tcon), (int)rxr_GetEpoch(tcon), client,
2667 afs_inet_ntoa_r(client->host->host, hoststr),
2668 (int)ntohs(client->host->port), (int)client->ViceId));
2678 PutClient(struct client **cp)
2684 h_ReleaseClient_r(*cp);
2691 /* Client user name for short term use. Note that this is NOT inexpensive */
2693 h_UserName(struct client *client)
2695 static char User[PR_MAXNAMELEN + 1];
2699 lids.idlist_len = 1;
2700 lids.idlist_val = (afs_int32 *) malloc(1 * sizeof(afs_int32));
2701 if (!lids.idlist_val) {
2702 ViceLogThenPanic(0, ("Failed malloc in h_UserName\n"));
2704 lnames.namelist_len = 0;
2705 lnames.namelist_val = (prname *) 0;
2706 lids.idlist_val[0] = client->ViceId;
2707 if (hpr_IdToName(&lids, &lnames)) {
2708 /* We need to free id we alloced above! */
2709 free(lids.idlist_val);
2710 return "*UNKNOWN USER NAME*";
2712 strncpy(User, lnames.namelist_val[0], PR_MAXNAMELEN);
2713 free(lids.idlist_val);
2714 free(lnames.namelist_val);
2723 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
2724 CEs, CEBlocks, HTs, HTBlocks));
2730 h_PrintClient(struct host *host, void *rock)
2732 StreamHandle_t *file = (StreamHandle_t *)rock;
2733 struct client *client;
2738 time_t LastCall, expTime;
2742 LastCall = host->LastCall;
2743 if (host->hostFlags & HOSTDELETED) {
2747 strftime(tbuffer, sizeof(tbuffer), "%a %b %d %T %Y",
2748 localtime_r(&LastCall, &tm));
2749 snprintf(tmpStr, sizeof tmpStr, "Host %s:%d down = %d, LastCall %s\n",
2750 afs_inet_ntoa_r(host->host, hoststr),
2751 ntohs(host->port), (host->hostFlags & VENUSDOWN),
2753 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2754 for (client = host->FirstClient; client; client = client->next) {
2755 if (!client->deleted) {
2756 expTime = client->expTime;
2757 strftime(tbuffer, sizeof(tbuffer), "%a %b %d %T %Y",
2758 localtime_r(&expTime, &tm));
2759 snprintf(tmpStr, sizeof tmpStr,
2760 " user id=%d, name=%s, sl=%s till %s\n",
2761 client->ViceId, h_UserName(client),
2762 client->authClass ? "Authenticated"
2763 : "Not authenticated",
2764 client->authClass ? tbuffer : "No Limit");
2765 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2766 snprintf(tmpStr, sizeof tmpStr, " CPS-%d is [",
2767 client->CPS.prlist_len);
2768 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2769 if (client->CPS.prlist_val) {
2770 for (i = 0; i < client->CPS.prlist_len; i++) {
2771 snprintf(tmpStr, sizeof tmpStr, " %d",
2772 client->CPS.prlist_val[i]);
2773 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2776 sprintf(tmpStr, "]\n");
2777 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2783 } /*h_PrintClient */
2788 * Print a list of clients, with last security level and token value seen,
2792 h_PrintClients(void)
2799 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
2803 ("Couldn't create client dump file %s\n",
2804 AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2807 now = FT_ApproxTime();
2808 strftime(tbuffer, sizeof(tbuffer), "%a %b %d %T %Y",
2809 localtime_r(&now, &tm));
2810 snprintf(tmpStr, sizeof tmpStr, "List of active users at %s\n\n",
2812 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2813 h_Enumerate(h_PrintClient, (char *)file);
2814 STREAM_REALLYCLOSE(file);
2815 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2822 h_DumpHost(struct host *host, void *rock)
2824 StreamHandle_t *file = (StreamHandle_t *)rock;
2831 snprintf(tmpStr, sizeof tmpStr,
2832 "ip:%s port:%d hidx:%d cbid:%d lock:%x last:%u active:%u "
2833 "down:%d del:%d cons:%d cldel:%d\n\t hpfailed:%d hcpsCall:%u "
2835 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
2836 host->index, host->cblist, CheckLock(&host->lock),
2837 host->LastCall, host->ActiveCall, (host->hostFlags & VENUSDOWN),
2838 host->hostFlags & HOSTDELETED, host->Console,
2839 host->hostFlags & CLIENTDELETED, host->hcpsfailed,
2841 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2842 if (host->hcps.prlist_val)
2843 for (i = 0; i < host->hcps.prlist_len; i++) {
2844 snprintf(tmpStr, sizeof tmpStr, " %d", host->hcps.prlist_val[i]);
2845 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2847 sprintf(tmpStr, "] [");
2848 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2849 if (host->interface)
2850 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
2852 sprintf(tmpStr, " %s:%d",
2853 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
2854 ntohs(host->interface->interface[i].port));
2855 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2857 sprintf(tmpStr, "] refCount:%d hostFlags:%hu\n", host->refCount, host->hostFlags);
2858 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2870 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
2877 ("Couldn't create host dump file %s\n",
2878 AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2881 now = FT_ApproxTime();
2882 strftime(tbuffer, sizeof(tbuffer), "%a %b %d %T %Y",
2883 localtime_r(&now, &tm));
2884 snprintf(tmpStr, sizeof tmpStr, "List of active hosts at %s\n\n", tbuffer);
2885 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2886 h_Enumerate(h_DumpHost, (char *)file);
2887 STREAM_REALLYCLOSE(file);
2888 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2892 #ifdef AFS_DEMAND_ATTACH_FS
2895 * host state serialization
2897 static int h_stateFillHeader(struct host_state_header * hdr);
2898 static int h_stateCheckHeader(struct host_state_header * hdr);
2899 static int h_stateAllocMap(struct fs_dump_state * state);
2900 static int h_stateSaveHost(struct host * host, void *rock);
2901 static int h_stateRestoreHost(struct fs_dump_state * state);
2902 static int h_stateRestoreIndex(struct host * h, void *rock);
2903 static int h_stateVerifyHost(struct host * h, void *rock);
2904 static int h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h,
2905 afs_uint32 addr, afs_uint16 port, int valid);
2906 static int h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h);
2907 static void h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out);
2908 static void h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out);
2911 /* this procedure saves all host state to disk for fast startup */
2913 h_stateSave(struct fs_dump_state * state)
2915 AssignInt64(state->eof_offset, &state->hdr->h_offset);
2918 ViceLog(0, ("h_stateSave: hostCount=%d\n", hostCount));
2920 /* invalidate host state header */
2921 memset(state->h_hdr, 0, sizeof(struct host_state_header));
2923 if (fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2924 sizeof(struct host_state_header))) {
2929 fs_stateIncEOF(state, sizeof(struct host_state_header));
2931 h_Enumerate_r(h_stateSaveHost, hostList, (char *)state);
2936 h_stateFillHeader(state->h_hdr);
2938 /* write the real header to disk */
2939 state->bail = fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2940 sizeof(struct host_state_header));
2947 * host state serialization
2949 * this procedure restores all host state from a disk for fast startup
2952 h_stateRestore(struct fs_dump_state * state)
2956 /* seek to the right position and read in the host state header */
2957 if (fs_stateReadHeader(state, &state->hdr->h_offset, state->h_hdr,
2958 sizeof(struct host_state_header))) {
2963 /* check the validity of the header */
2964 if (h_stateCheckHeader(state->h_hdr)) {
2969 records = state->h_hdr->records;
2971 if (h_stateAllocMap(state)) {
2976 /* iterate over records restoring host state */
2977 for (i=0; i < records; i++) {
2978 if (h_stateRestoreHost(state) != 0) {
2989 h_stateRestoreIndices(struct fs_dump_state * state)
2991 h_Enumerate_r(h_stateRestoreIndex, hostList, (char *)state);
2996 h_stateRestoreIndex(struct host * h, void *rock)
2998 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2999 if (cb_OldToNew(state, h->cblist, &h->cblist)) {
3000 return H_ENUMERATE_BAIL(0);
3006 h_stateVerify(struct fs_dump_state * state)
3008 h_Enumerate_r(h_stateVerifyHost, hostList, (char *)state);
3013 h_stateVerifyHost(struct host * h, void* rock)
3015 struct fs_dump_state *state = (struct fs_dump_state *)rock;
3019 ViceLog(0, ("h_stateVerifyHost: error: NULL host pointer in linked list\n"));
3020 return H_ENUMERATE_BAIL(0);
3024 for (i = h->interface->numberOfInterfaces-1; i >= 0; i--) {
3025 if (h_stateVerifyAddrHash(state, h, h->interface->interface[i].addr,
3026 h->interface->interface[i].port,
3027 h->interface->interface[i].valid)) {
3031 if (h_stateVerifyUuidHash(state, h)) {
3034 } else if (h_stateVerifyAddrHash(state, h, h->host, h->port, 1)) {
3038 if (cb_stateVerifyHCBList(state, h)) {
3046 * verify a host is either in, or absent from, the addr hash table.
3048 * @param[in] state fs dump state
3049 * @param[in] h host we're dealing with
3050 * @param[in] addr addr to look for (NBO)
3051 * @param[in] port port to look for (NBO)
3052 * @param[in] valid 1 if we're verifying that the specified addr and port
3053 * in the hash table point to the specified host. 0 if we're
3054 * verifying that the specified addr and port do NOT point
3055 * to the specified host
3057 * @return operation status
3058 * @retval 1 failed to verify, bail out
3059 * @retval 0 verified successfully, all is well
3062 h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h,
3063 afs_uint32 addr, afs_uint16 port, int valid)
3065 int ret = 0, found = 0;
3066 struct host *host = NULL;
3067 struct h_AddrHashChain *chain;
3068 int index = h_HashIndex(addr);
3072 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
3073 host = chain->hostPtr;
3075 afs_inet_ntoa_r(addr, tmp);
3076 ViceLog(0, ("h_stateVerifyAddrHash: error: addr hash chain has NULL host ptr (lookup addr %s)\n", tmp));
3080 if ((chain->addr == addr) && (chain->port == port)) {
3083 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr hash entry "
3084 "points to different host struct (%d, %d)\n",
3085 h->index, host->index));
3086 state->flags.warnings_generated = 1;
3090 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s:%u is "
3091 "marked invalid, but points to the containing "
3092 "host\n", afs_inet_ntoa_r(addr, tmp),
3093 (unsigned)htons(port)));
3101 if (chain_len > FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN) {
3102 ViceLog(0, ("h_stateVerifyAddrHash: error: hash chain length exceeds %d; assuming there's a loop\n",
3103 FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN));
3110 if (!found && valid) {
3111 afs_inet_ntoa_r(addr, tmp);
3112 if (state->mode == FS_STATE_LOAD_MODE) {
3113 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s:%u not found in hash\n",
3114 tmp, (unsigned)htons(port)));
3118 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr %s:%u not found in hash\n",
3119 tmp, (unsigned)htons(port)));
3120 state->flags.warnings_generated = 1;
3129 h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h)
3131 int ret = 0, found = 0;
3132 struct host *host = NULL;
3133 struct h_UuidHashChain *chain;
3134 afsUUID * uuidp = &h->interface->uuid;
3135 int index = h_UuidHashIndex(uuidp);
3139 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
3140 host = chain->hostPtr;
3142 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
3143 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid hash chain has NULL host ptr (lookup uuid %s)\n", tmp));
3147 if (host->interface &&
3148 afs_uuid_equal(&host->interface->uuid, uuidp)) {
3150 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid hash entry points to different host struct (%d, %d)\n",
3151 h->index, host->index));
3152 state->flags.warnings_generated = 1;
3157 if (chain_len > FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN) {
3158 ViceLog(0, ("h_stateVerifyUuidHash: error: hash chain length exceeds %d; assuming there's a loop\n",
3159 FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN));
3167 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
3168 if (state->mode == FS_STATE_LOAD_MODE) {
3169 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid %s not found in hash\n", tmp));
3173 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid %s not found in hash\n", tmp));
3174 state->flags.warnings_generated = 1;
3182 /* create the host state header structure */
3184 h_stateFillHeader(struct host_state_header * hdr)
3186 hdr->stamp.magic = HOST_STATE_MAGIC;
3187 hdr->stamp.version = HOST_STATE_VERSION;
3191 /* check the contents of the host state header structure */
3193 h_stateCheckHeader(struct host_state_header * hdr)
3197 if (hdr->stamp.magic != HOST_STATE_MAGIC) {
3198 ViceLog(0, ("check_host_state_header: invalid state header\n"));
3201 else if (hdr->stamp.version != HOST_STATE_VERSION) {
3202 ViceLog(0, ("check_host_state_header: unknown version number\n"));
3208 /* allocate the host id mapping table */
3210 h_stateAllocMap(struct fs_dump_state * state)
3212 state->h_map.len = state->h_hdr->index_max + 1;
3213 state->h_map.entries = (struct idx_map_entry_t *)
3214 calloc(state->h_map.len, sizeof(struct idx_map_entry_t));
3215 return (state->h_map.entries != NULL) ? 0 : 1;
3218 /* function called by h_Enumerate to save a host to disk */
3220 h_stateSaveHost(struct host * host, void* rock)
3222 struct fs_dump_state *state = (struct fs_dump_state *) rock;
3223 int if_len=0, hcps_len=0;
3224 struct hostDiskEntry hdsk;
3225 struct host_state_entry_header hdr;
3226 struct Interface * ifp = NULL;
3227 afs_int32 * hcps = NULL;
3228 struct iovec iov[4];
3231 memset(&hdr, 0, sizeof(hdr));
3233 if (state->h_hdr->index_max < host->index) {
3234 state->h_hdr->index_max = host->index;
3237 h_hostToDiskEntry_r(host, &hdsk);
3238 if (host->interface) {
3239 if_len = sizeof(struct Interface) +
3240 ((host->interface->numberOfInterfaces-1) * sizeof(struct AddrPort));
3241 ifp = (struct Interface *) malloc(if_len);
3242 osi_Assert(ifp != NULL);
3243 memcpy(ifp, host->interface, if_len);
3244 hdr.interfaces = host->interface->numberOfInterfaces;
3245 iov[iovcnt].iov_base = (char *) ifp;
3246 iov[iovcnt].iov_len = if_len;
3249 if (host->hcps.prlist_val) {
3250 hdr.hcps = host->hcps.prlist_len;
3251 hcps_len = hdr.hcps * sizeof(afs_int32);
3252 hcps = (afs_int32 *) malloc(hcps_len);
3253 osi_Assert(hcps != NULL);
3254 memcpy(hcps, host->hcps.prlist_val, hcps_len);
3255 iov[iovcnt].iov_base = (char *) hcps;
3256 iov[iovcnt].iov_len = hcps_len;
3260 if (hdsk.index > state->h_hdr->index_max)
3261 state->h_hdr->index_max = hdsk.index;
3263 hdr.len = sizeof(struct host_state_entry_header) +
3264 sizeof(struct hostDiskEntry) + if_len + hcps_len;
3265 hdr.magic = HOST_STATE_ENTRY_MAGIC;
3267 iov[0].iov_base = (char *) &hdr;
3268 iov[0].iov_len = sizeof(hdr);
3269 iov[1].iov_base = (char *) &hdsk;
3270 iov[1].iov_len = sizeof(struct hostDiskEntry);
3272 if (fs_stateWriteV(state, iov, iovcnt)) {
3273 ViceLog(0, ("h_stateSaveHost: failed to save host %d", host->index));
3277 fs_stateIncEOF(state, hdr.len);
3279 state->h_hdr->records++;
3286 return H_ENUMERATE_BAIL(0);
3291 /* restores a host from disk */
3293 h_stateRestoreHost(struct fs_dump_state * state)
3295 int ifp_len=0, hcps_len=0, bail=0;
3296 struct host_state_entry_header hdr;
3297 struct hostDiskEntry hdsk;
3298 struct host *host = NULL;
3299 struct Interface *ifp = NULL;
3300 afs_int32 * hcps = NULL;
3301 struct iovec iov[3];
3304 if (fs_stateRead(state, &hdr, sizeof(hdr))) {
3305 ViceLog(0, ("h_stateRestoreHost: failed to read host entry header from dump file '%s'\n",
3311 if (hdr.magic != HOST_STATE_ENTRY_MAGIC) {
3312 ViceLog(0, ("h_stateRestoreHost: fileserver state dump file '%s' is corrupt.\n",
3318 iov[0].iov_base = (char *) &hdsk;
3319 iov[0].iov_len = sizeof(struct hostDiskEntry);
3321 if (hdr.interfaces) {
3322 ifp_len = sizeof(struct Interface) +
3323 ((hdr.interfaces-1) * sizeof(struct AddrPort));
3324 ifp = (struct Interface *) malloc(ifp_len);
3325 osi_Assert(ifp != NULL);
3326 iov[iovcnt].iov_base = (char *) ifp;
3327 iov[iovcnt].iov_len = ifp_len;
3331 hcps_len = hdr.hcps * sizeof(afs_int32);
3332 hcps = (afs_int32 *) malloc(hcps_len);
3333 osi_Assert(hcps != NULL);
3334 iov[iovcnt].iov_base = (char *) hcps;
3335 iov[iovcnt].iov_len = hcps_len;
3339 if ((ifp_len + hcps_len + sizeof(hdsk) + sizeof(hdr)) != hdr.len) {
3340 ViceLog(0, ("h_stateRestoreHost: host entry header length fields are inconsistent\n"));
3345 if (fs_stateReadV(state, iov, iovcnt)) {
3346 ViceLog(0, ("h_stateRestoreHost: failed to read host entry\n"));
3351 if (!hdr.hcps && hdsk.hcps_valid) {
3352 /* valid, zero-length host cps ; does this ever happen? */
3353 hcps = (afs_int32 *) malloc(sizeof(afs_int32));
3354 osi_Assert(hcps != NULL);
3358 osi_Assert(host != NULL);
3361 host->interface = ifp;
3364 host->hcps.prlist_val = hcps;
3365 host->hcps.prlist_len = hdr.hcps;
3368 h_diskEntryToHost_r(&hdsk, host);
3369 h_SetupCallbackConn_r(host);
3371 h_AddHostToAddrHashTable_r(host->host, host->port, host);
3374 for (i = ifp->numberOfInterfaces-1; i >= 0; i--) {
3375 if (ifp->interface[i].valid &&
3376 !(ifp->interface[i].addr == host->host &&
3377 ifp->interface[i].port == host->port)) {
3378 h_AddHostToAddrHashTable_r(ifp->interface[i].addr,
3379 ifp->interface[i].port,
3383 h_AddHostToUuidHashTable_r(&ifp->uuid, host);
3385 h_InsertList_r(host);
3387 /* setup host id map entry */
3388 state->h_map.entries[hdsk.index].old_idx = hdsk.index;
3389 state->h_map.entries[hdsk.index].new_idx = host->index;
3401 /* serialize a host structure to disk */
3403 h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out)
3405 out->host = in->host;
3406 out->port = in->port;
3407 out->hostFlags = in->hostFlags;
3408 out->Console = in->Console;
3409 out->hcpsfailed = in->hcpsfailed;
3410 out->LastCall = in->LastCall;
3411 out->ActiveCall = in->ActiveCall;
3412 out->cpsCall = in->cpsCall;
3413 out->cblist = in->cblist;
3414 #ifdef FS_STATS_DETAILED
3415 out->InSameNetwork = in->InSameNetwork;
3418 /* special fields we save, but are not memcpy'd back on restore */
3419 out->index = in->index;
3420 out->hcps_len = in->hcps.prlist_len;
3421 out->hcps_valid = (in->hcps.prlist_val == NULL) ? 0 : 1;
3424 /* restore a host structure from disk */
3426 h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out)
3428 out->host = in->host;
3429 out->port = in->port;
3430 out->hostFlags = in->hostFlags;
3431 out->Console = in->Console;
3432 out->hcpsfailed = in->hcpsfailed;
3433 out->LastCall = in->LastCall;
3434 out->ActiveCall = in->ActiveCall;
3435 out->cpsCall = in->cpsCall;
3436 out->cblist = in->cblist;
3437 #ifdef FS_STATS_DETAILED
3438 out->InSameNetwork = in->InSameNetwork;
3442 /* index translation routines */
3444 h_OldToNew(struct fs_dump_state * state, afs_uint32 old, afs_uint32 * new)
3448 /* hosts use a zero-based index, so old==0 is valid */
3450 if (old >= state->h_map.len) {
3451 ViceLog(0, ("h_OldToNew: index %d is out of range\n", old));
3453 } else if (state->h_map.entries[old].old_idx != old) { /* sanity check */
3454 ViceLog(0, ("h_OldToNew: index %d points to an invalid host record\n", old));
3457 *new = state->h_map.entries[old].new_idx;
3462 #endif /* AFS_DEMAND_ATTACH_FS */
3466 * This counts the number of workstations, the number of active workstations,
3467 * and the number of workstations declared "down" (i.e. not heard from
3468 * recently). An active workstation has received a call since the cutoff
3469 * time argument passed.
3472 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
3475 int num = 0, active = 0, del = 0;
3479 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
3480 if (!(host->hostFlags & HOSTDELETED)) {
3482 if (host->ActiveCall > cutofftime)
3484 if (host->hostFlags & VENUSDOWN)
3488 if (count != hostCount) {
3489 ViceLog(0, ("h_GetWorkStats found %d of %d hosts\n", count, hostCount));
3490 } else if (host != NULL) {
3491 ViceLog(0, ("h_GetWorkStats found more than %d hosts\n", hostCount));
3492 ShutDownAndCore(PANIC);
3502 } /*h_GetWorkStats */
3505 h_GetWorkStats64(afs_uint64 *nump, afs_uint64 *activep, afs_uint64 *delp,
3506 afs_int32 cutofftime)
3508 int num, active, del;
3509 h_GetWorkStats(&num, &active, &del, cutofftime);
3518 /*------------------------------------------------------------------------
3519 * PRIVATE h_ClassifyAddress
3522 * Given a target IP address and a candidate IP address (both
3523 * in host byte order), classify the candidate into one of three
3524 * buckets in relation to the target by bumping the counters passed
3528 * a_targetAddr : Target address.
3529 * a_candAddr : Candidate address.
3530 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
3531 * addresses are either in the same network
3532 * or the same subnet.
3533 * a_diffSubnetP : ...when the candidate is in a different
3535 * a_diffNetworkP : ...when the candidate is in a different
3542 * The target and candidate addresses are both in host byte
3543 * order, NOT network byte order, when passed in.
3547 *------------------------------------------------------------------------*/
3550 h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
3551 afs_int32 * a_sameNetOrSubnetP, afs_int32 * a_diffSubnetP,
3552 afs_int32 * a_diffNetworkP)
3553 { /*h_ClassifyAddress */
3555 afs_uint32 targetNet;
3556 afs_uint32 targetSubnet;
3558 afs_uint32 candSubnet;
3561 * Put bad values into the subnet info to start with.
3563 targetSubnet = (afs_uint32) 0;
3564 candSubnet = (afs_uint32) 0;
3567 * Pull out the network and subnetwork numbers from the target
3568 * and candidate addresses. We can short-circuit this whole
3569 * affair if the target and candidate addresses are not of the
3572 if (IN_CLASSA(a_targetAddr)) {
3573 if (!(IN_CLASSA(a_candAddr))) {
3574 (*a_diffNetworkP)++;
3577 targetNet = a_targetAddr & IN_CLASSA_NET;
3578 candNet = a_candAddr & IN_CLASSA_NET;
3579 if (IN_SUBNETA(a_targetAddr))
3580 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
3581 if (IN_SUBNETA(a_candAddr))
3582 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
3583 } else if (IN_CLASSB(a_targetAddr)) {
3584 if (!(IN_CLASSB(a_candAddr))) {
3585 (*a_diffNetworkP)++;
3588 targetNet = a_targetAddr & IN_CLASSB_NET;
3589 candNet = a_candAddr & IN_CLASSB_NET;
3590 if (IN_SUBNETB(a_targetAddr))
3591 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
3592 if (IN_SUBNETB(a_candAddr))
3593 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
3594 } /*Class B target */
3595 else if (IN_CLASSC(a_targetAddr)) {
3596 if (!(IN_CLASSC(a_candAddr))) {
3597 (*a_diffNetworkP)++;
3600 targetNet = a_targetAddr & IN_CLASSC_NET;
3601 candNet = a_candAddr & IN_CLASSC_NET;
3604 * Note that class C addresses can't have subnets,
3605 * so we leave the defaults untouched.
3607 } /*Class C target */
3609 targetNet = a_targetAddr;
3610 candNet = a_candAddr;
3611 } /*Class D address */
3614 * Now, simply compare the extracted net and subnet values for
3615 * the two addresses (which at this point are known to be of the
3618 if (targetNet == candNet) {
3619 if (targetSubnet == candSubnet)
3620 (*a_sameNetOrSubnetP)++;
3624 (*a_diffNetworkP)++;
3626 } /*h_ClassifyAddress */
3629 /*------------------------------------------------------------------------
3630 * EXPORTED h_GetHostNetStats
3633 * Iterate through the host table, and classify each (non-deleted)
3634 * host entry into ``proximity'' categories (same net or subnet,
3635 * different subnet, different network).
3638 * a_numHostsP : Set to total number of (non-deleted) hosts.
3639 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
3640 * a_diffSubnetP : Set to # hosts on diff subnet as server.
3641 * a_diffNetworkP : Set to # hosts on diff network as server.
3647 * We only count non-deleted hosts. The storage pointed to by our
3648 * parameters is zeroed upon entry.
3652 *------------------------------------------------------------------------*/
3655 h_GetHostNetStats(afs_int32 * a_numHostsP, afs_int32 * a_sameNetOrSubnetP,
3656 afs_int32 * a_diffSubnetP, afs_int32 * a_diffNetworkP)
3657 { /*h_GetHostNetStats */
3659 struct host *hostP; /*Ptr to current host entry */
3660 afs_uint32 currAddr_HBO; /*Curr host addr, host byte order */
3664 * Clear out the storage pointed to by our parameters.
3666 *a_numHostsP = (afs_int32) 0;
3667 *a_sameNetOrSubnetP = (afs_int32) 0;
3668 *a_diffSubnetP = (afs_int32) 0;
3669 *a_diffNetworkP = (afs_int32) 0;
3672 for (count = 0, hostP = hostList; hostP && count < hostCount; hostP = hostP->next, count++) {
3673 if (!(hostP->hostFlags & HOSTDELETED)) {
3675 * Bump the number of undeleted host entries found.
3676 * In classifying the current entry's address, make
3677 * sure to first convert to host byte order.
3680 currAddr_HBO = (afs_uint32) ntohl(hostP->host);
3681 h_ClassifyAddress(FS_HostAddr_HBO, currAddr_HBO,
3682 a_sameNetOrSubnetP, a_diffSubnetP,
3684 } /*Only look at non-deleted hosts */
3685 } /*For each host record hashed to this index */
3686 if (count != hostCount) {
3687 ViceLog(0, ("h_GetHostNetStats found %d of %d hosts\n", count, hostCount));
3688 } else if (hostP != NULL) {
3689 ViceLog(0, ("h_GetHostNetStats found more than %d hosts\n", hostCount));
3690 ShutDownAndCore(PANIC);
3693 } /*h_GetHostNetStats */
3695 static afs_uint32 checktime;
3696 static afs_uint32 clientdeletetime;
3697 static struct AFSFid zerofid;
3701 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
3702 * Since it can serialize them, and pile up, it should be a separate LWP
3703 * from other events.
3707 CheckHost(struct host *host, int flags, void *rock)
3709 struct client *client;
3710 struct rx_connection *cb_conn = NULL;
3713 #ifdef AFS_DEMAND_ATTACH_FS
3714 /* kill the checkhost lwp ASAP during shutdown */
3716 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3718 return H_ENUMERATE_BAIL(flags);
3723 /* Host is held by h_Enumerate */
3725 for (client = host->FirstClient; client; client = client->next) {
3726 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3727 client->deleted = 1;
3728 host->hostFlags |= CLIENTDELETED;
3731 if (host->LastCall < checktime) {
3733 if (!(host->hostFlags & HOSTDELETED)) {
3734 host->hostFlags |= HWHO_INPROGRESS;
3735 cb_conn = host->callback_rxcon;
3736 rx_GetConnection(cb_conn);
3737 if (host->LastCall < clientdeletetime) {
3738 host->hostFlags |= HOSTDELETED;
3739 if (!(host->hostFlags & VENUSDOWN)) {
3740 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3741 if (host->interface) {
3744 RXAFSCB_InitCallBackState3(cb_conn,
3750 RXAFSCB_InitCallBackState(cb_conn);
3753 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3756 (void)afs_inet_ntoa_r(host->host, hoststr);
3758 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3759 hoststr, ntohs(host->port)));
3760 host->hostFlags |= VENUSDOWN;
3762 /* Note: it's safe to delete hosts even if they have call
3763 * back state, because break delayed callbacks (called when a
3764 * message is received from the workstation) will always send a
3765 * break all call backs to the workstation if there is no
3770 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3772 (void)afs_inet_ntoa_r(host->host, hoststr);
3773 if (host->interface) {
3774 afsUUID uuid = host->interface->uuid;
3776 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3779 if (MultiProbeAlternateAddress_r(host)) {
3780 ViceLog(0,("CheckHost: Probing all interfaces of host %s:%d failed, code %d\n",
3781 hoststr, ntohs(host->port), code));
3782 host->hostFlags |= VENUSDOWN;
3787 code = RXAFSCB_Probe(cb_conn);
3791 ("CheckHost: Probe failed for host %s:%d, code %d\n",
3792 hoststr, ntohs(host->port), code));
3793 host->hostFlags |= VENUSDOWN;
3799 rx_PutConnection(cb_conn);
3802 host->hostFlags &= ~HWHO_INPROGRESS;
3813 CheckHost_r(struct host *host, void *dummy)
3815 struct client *client;
3816 struct rx_connection *cb_conn = NULL;
3819 #ifdef AFS_DEMAND_ATTACH_FS
3820 /* kill the checkhost lwp ASAP during shutdown */
3822 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3824 return H_ENUMERATE_BAIL(0);
3829 /* Host is held by h_Enumerate_r */
3830 for (client = host->FirstClient; client; client = client->next) {
3831 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3832 client->deleted = 1;
3833 host->hostFlags |= CLIENTDELETED;
3836 if (host->LastCall < checktime) {
3838 if (!(host->hostFlags & HOSTDELETED)) {
3839 host->hostFlags |= HWHO_INPROGRESS;
3840 cb_conn = host->callback_rxcon;
3841 rx_GetConnection(cb_conn);
3842 if (host->LastCall < clientdeletetime) {
3843 host->hostFlags |= HOSTDELETED;
3844 if (!(host->hostFlags & VENUSDOWN)) {
3845 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3846 if (host->interface) {
3849 RXAFSCB_InitCallBackState3(cb_conn,
3855 RXAFSCB_InitCallBackState(cb_conn);
3858 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3861 (void)afs_inet_ntoa_r(host->host, hoststr);
3863 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3864 hoststr, ntohs(host->port)));
3865 host->hostFlags |= VENUSDOWN;
3867 /* Note: it's safe to delete hosts even if they have call
3868 * back state, because break delayed callbacks (called when a
3869 * message is received from the workstation) will always send a
3870 * break all call backs to the workstation if there is no
3875 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3877 (void)afs_inet_ntoa_r(host->host, hoststr);
3878 if (host->interface) {
3879 afsUUID uuid = host->interface->uuid;
3881 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3884 if (MultiProbeAlternateAddress_r(host)) {
3885 ViceLog(0,("CheckHost_r: Probing all interfaces of host %s:%d failed, code %d\n",
3886 hoststr, ntohs(host->port), code));
3887 host->hostFlags |= VENUSDOWN;
3892 code = RXAFSCB_Probe(cb_conn);
3896 ("CheckHost_r: Probe failed for host %s:%d, code %d\n",
3897 hoststr, ntohs(host->port), code));
3898 host->hostFlags |= VENUSDOWN;
3904 rx_PutConnection(cb_conn);
3907 host->hostFlags &= ~HWHO_INPROGRESS;
3917 * Set VenusDown for any hosts that have not had a call in 15 minutes and
3918 * don't respond to a probe. Note that VenusDown can only be cleared if
3919 * a message is received from the host (see ServerLWP in file.c).
3920 * Delete hosts that have not had any calls in 1 hour, clients that
3921 * have not had any calls in 15 minutes.
3923 * This routine is called roughly every 5 minutes.
3928 afs_uint32 now = FT_ApproxTime();
3930 memset(&zerofid, 0, sizeof(zerofid));
3932 * Send a probe to the workstation if it hasn't been heard from in
3935 checktime = now - 15 * 60;
3936 clientdeletetime = now - 120 * 60; /* 2 hours ago */
3939 h_Enumerate_r(CheckHost_r, hostList, NULL);
3944 * This is called with host locked and held. At this point, the
3945 * hostAddrHashTable has an entry for the primary addr/port inserted
3946 * by h_Alloc_r(). No other interfaces should be considered valid.
3948 * The addresses in the interfaceAddr list are in host byte order.
3951 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
3958 struct Interface *interface;
3961 afs_uint16 port7001 = htons(7001);
3966 number = interf->numberOfInterfaces;
3967 myAddr = host->host; /* current interface address */
3968 myPort = host->port; /* current port */
3971 ("initInterfaceAddr : host %s:%d numAddr %d\n",
3972 afs_inet_ntoa_r(myAddr, hoststr), ntohs(myPort), number));
3974 /* validation checks */
3975 if (number < 0 || number > AFS_MAX_INTERFACE_ADDR) {
3977 ("Invalid number of alternate addresses is %d\n", number));
3982 * The client's notion of its own IP addresses is not reliable.
3984 * 1. The client list might contain private address ranges which
3985 * are likely to be re-used by many clients allocated addresses
3988 * 2. The client list will not include any public addresses that
3989 * are hidden by a NAT.
3991 * 3. Private address ranges that are exposed to the server will
3992 * be obtained from the rx connections that use them.
3994 * 4. Lists provided by the client are not necessarily truthful.
3995 * Many existing clients (UNIX) do not refresh the IP address
3996 * list as the actual assigned addresses change. The end result
3997 * is that they report the initial address list for the lifetime
3998 * of the process. In other words, a client can report addresses
3999 * that they are in fact not using. Adding these addresses to
4000 * the host interface list without verification is not only
4001 * pointless, it is downright dangerous.
4003 * We therefore do not add alternate addresses to the addr hash table.
4004 * We only use them for multi-rx callback breaks.
4008 * Convert IP addresses to network byte order, and remove
4009 * duplicate IP addresses from the interface list, and
4010 * determine whether or not the incoming addr/port is
4011 * listed. Note that if the address matches it is not
4012 * truly a match because the port number for the entries
4013 * in the interface list are port 7001 and the port number
4014 * for this connection might not be 7001.
4016 for (i = 0, count = 0, found = 0; i < number; i++) {
4017 interf->addr_in[i] = htonl(interf->addr_in[i]);
4018 for (j = 0; j < count; j++) {
4019 if (interf->addr_in[j] == interf->addr_in[i])
4023 interf->addr_in[count] = interf->addr_in[i];
4024 if (interf->addr_in[count] == myAddr &&
4032 * Allocate and initialize an interface structure for this host.
4035 interface = (struct Interface *)
4036 malloc(sizeof(struct Interface) +
4037 (sizeof(struct AddrPort) * (count - 1)));
4039 ViceLogThenPanic(0, ("Failed malloc in initInterfaceAddr_r 1\n"));
4041 interface->numberOfInterfaces = count;
4043 interface = (struct Interface *)
4044 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * count));
4046 ViceLogThenPanic(0, ("Failed malloc in initInterfaceAddr_r 2\n"));
4048 interface->numberOfInterfaces = count + 1;
4049 interface->interface[count].addr = myAddr;
4050 interface->interface[count].port = myPort;
4051 interface->interface[count].valid = 1;
4054 for (i = 0; i < count; i++) {
4056 interface->interface[i].addr = interf->addr_in[i];
4057 /* We store the port as 7001 because the addresses reported by
4058 * TellMeAboutYourself and WhoAreYou RPCs are only valid if they
4059 * are coming from fully connected hosts (no NAT/PATs)
4061 interface->interface[i].port = port7001;
4062 interface->interface[i].valid =
4063 (interf->addr_in[i] == myAddr && port7001 == myPort) ? 1 : 0;
4066 interface->uuid = interf->uuid;
4068 osi_Assert(!host->interface);
4069 host->interface = interface;
4071 if (LogLevel >= 125) {
4072 afsUUID_to_string(&interface->uuid, uuidstr, 127);
4074 ViceLog(125, ("--- uuid %s\n", uuidstr));
4075 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
4076 ViceLog(125, ("--- alt address %s:%d\n",
4077 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
4078 ntohs(host->interface->interface[i].port)));
4085 /* deleted a HashChain structure for this address and host */
4086 /* returns 1 on success */
4088 h_DeleteHostFromAddrHashTable_r(afs_uint32 addr, afs_uint16 port,
4092 struct h_AddrHashChain **hp, *th;
4094 if (addr == 0 && port == 0)
4097 for (hp = &hostAddrHashTable[h_HashIndex(addr)]; (th = *hp);
4099 osi_Assert(th->hostPtr);
4100 if (th->hostPtr == host && th->addr == addr && th->port == port) {
4101 ViceLog(125, ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d)\n",
4102 host, afs_inet_ntoa_r(host->host, hoststr),
4103 ntohs(host->port)));
4110 ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) not found\n",
4111 host, afs_inet_ntoa_r(host->host, hoststr),
4112 ntohs(host->port)));
4118 ** prints out all alternate interface address for the host. The 'level'
4119 ** parameter indicates what level of debugging sets this output
4122 printInterfaceAddr(struct host *host, int level)
4127 if (host->interface) {
4128 /* check alternate addresses */
4129 number = host->interface->numberOfInterfaces;
4131 ViceLog(level, ("no-addresses "));
4133 for (i = 0; i < number; i++)
4134 ViceLog(level, ("%s:%d ", afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
4135 ntohs(host->interface->interface[i].port)));
4138 ViceLog(level, ("\n"));