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))
1010 /* h_Enumerate_r (revised):
1011 * Calls (*proc)(host, param) for each host in hostList, starting
1012 * at enumstart. Called only under H_LOCK. Hosts may be deleted (have
1013 * delete flag set); ditto for clients. refCount is always incremented
1014 * before (*proc) is called.
1016 * @note Assumes that hostList is only prepended to, that a host is never
1017 * inserted into the middle. Otherwise this would not be guaranteed to
1020 * The return value of the proc is a set of flags. The proc should set
1021 * H_ENUMERATE_BAIL(foo) if the enumeration of hosts should be stopped early.
1024 h_Enumerate_r(int (*proc) (struct host *, void *),
1025 struct host *enumstart, void *param)
1027 struct host *host, *next;
1031 if (hostCount == 0) {
1038 /* find the first non-deleted host, so we know where to actually start
1040 for (count = 0; host && count < hostCount; count++) {
1041 if (!(host->hostFlags & HOSTDELETED)) {
1048 /* we didn't find a non-deleted host... */
1050 if (host && count >= hostCount) {
1051 /* ...because we found a loop */
1052 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", hostCount));
1053 ShutDownAndCore(PANIC);
1056 /* ...because the hostList is full of deleted hosts */
1060 h_Hold_r(enumstart);
1062 /* remember hostCount, lest it change over the potential H_LOCK drop in
1064 origHostCount = hostCount;
1066 for (count = 0, host = enumstart; host && count < origHostCount; host = next, count++) {
1069 /* find the next non-deleted host */
1070 while (next && (next->hostFlags & HOSTDELETED)) {
1072 /* inc count for the skipped-over host */
1073 if (++count > origHostCount) {
1074 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", origHostCount));
1075 ShutDownAndCore(PANIC);
1081 if (!(host->hostFlags & HOSTDELETED)) {
1083 flags = (*proc) (host, param);
1084 if (H_ENUMERATE_ISSET_BAIL(flags)) {
1085 h_Release_r(host); /* this might free up the host */
1089 h_Release_r(host); /* this might free up the host */
1091 if (host != NULL && count >= origHostCount) {
1092 ViceLog(0, ("h_Enumerate_r found more than %d hosts\n", origHostCount));
1093 ShutDownAndCore(PANIC);
1095 } /*h_Enumerate_r */
1098 /* inserts a new HashChain structure corresponding to this UUID */
1100 h_AddHostToUuidHashTable_r(struct afsUUID *uuid, struct host *host)
1103 struct h_UuidHashChain *chain;
1104 char uuid1[128], uuid2[128];
1107 /* hash into proper bucket */
1108 index = h_UuidHashIndex(uuid);
1110 /* don't add the same entry multiple times */
1111 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
1112 if (!chain->hostPtr)
1115 if (chain->hostPtr->interface &&
1116 afs_uuid_equal(&chain->hostPtr->interface->uuid, uuid)) {
1117 if (LogLevel >= 125) {
1118 afsUUID_to_string(&chain->hostPtr->interface->uuid, uuid1,
1120 afsUUID_to_string(uuid, uuid2, 127);
1121 ViceLog(125, ("h_AddHostToUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s) exists as %s:%d (uuid %s)\n",
1123 afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1124 ntohs(chain->hostPtr->port), uuid2));
1130 /* insert into beginning of list for this bucket */
1131 chain = (struct h_UuidHashChain *)malloc(sizeof(struct h_UuidHashChain));
1133 ViceLogThenPanic(0, ("Failed malloc in h_AddHostToUuidHashTable_r\n"));
1135 chain->hostPtr = host;
1136 chain->next = hostUuidHashTable[index];
1137 hostUuidHashTable[index] = chain;
1140 afsUUID_to_string(uuid, uuid2, 127);
1142 ("h_AddHostToUuidHashTable_r: host %p (%s:%d) added as uuid %s\n",
1143 host, afs_inet_ntoa_r(chain->hostPtr->host, hoststr),
1144 ntohs(chain->hostPtr->port), uuid2));
1147 /* deletes a HashChain structure corresponding to this host */
1149 h_DeleteHostFromUuidHashTable_r(struct host *host)
1152 struct h_UuidHashChain **uhp, *uth;
1156 if (!host->interface)
1159 /* hash into proper bucket */
1160 index = h_UuidHashIndex(&host->interface->uuid);
1162 if (LogLevel >= 125)
1163 afsUUID_to_string(&host->interface->uuid, uuid1, 127);
1164 for (uhp = &hostUuidHashTable[index]; (uth = *uhp); uhp = &uth->next) {
1165 osi_Assert(uth->hostPtr);
1166 if (uth->hostPtr == host) {
1168 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d)\n",
1169 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1170 ntohs(host->port)));
1177 ("h_DeleteHostFromUuidHashTable_r: host %" AFS_PTR_FMT " (uuid %s %s:%d) not found\n",
1178 host, uuid1, afs_inet_ntoa_r(host->host, hoststr),
1179 ntohs(host->port)));
1184 * This is called with host locked and held.
1186 * All addresses are in network byte order.
1189 invalidateInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1193 struct Interface *interface;
1194 char hoststr[16], hoststr2[16];
1197 osi_Assert(host->interface);
1199 ViceLog(125, ("invalidateInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1200 host, afs_inet_ntoa_r(host->host, hoststr),
1201 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1205 * Make sure this address is on the list of known addresses
1208 interface = host->interface;
1209 number = host->interface->numberOfInterfaces;
1210 for (i = 0; i < number; i++) {
1211 if (interface->interface[i].addr == addr &&
1212 interface->interface[i].port == port) {
1213 if (interface->interface[i].valid) {
1214 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1215 interface->interface[i].valid = 0;
1226 * This is called with host locked and held. This function differs
1227 * from removeInterfaceAddr_r in that it is called when the address
1228 * is being removed from the host regardless of whether or not there
1229 * is an interface list for the host. This function will delete the
1230 * host if there are no addresses left on it.
1232 * All addresses are in network byte order.
1235 removeAddress_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1238 char hoststr[16], hoststr2[16];
1239 struct rx_connection *rxconn;
1241 if (!host->interface || host->interface->numberOfInterfaces == 1) {
1242 if (host->host == addr && host->port == port) {
1244 ("Removing only address for host %" AFS_PTR_FMT " (%s:%d), deleting host.\n",
1245 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1246 host->hostFlags |= HOSTDELETED;
1248 * Do not remove the primary addr/port from the hash table.
1249 * It will be ignored due to the HOSTDELETED flag and will
1250 * be removed when h_TossStuff_r() cleans up the HOSTDELETED
1251 * host. Removing it here will only result in a search for
1252 * the host/addr/port in the hash chain which will fail.
1256 ("Removing address that does not belong to host %" AFS_PTR_FMT " (%s:%d).\n",
1257 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1260 if (host->host == addr && host->port == port) {
1261 removeInterfaceAddr_r(host, addr, port);
1263 for (i=0; i < host->interface->numberOfInterfaces; i++) {
1264 if (host->interface->interface[i].valid) {
1266 ("Removed address for host %" AFS_PTR_FMT " (%s:%d), new primary interface %s:%d.\n",
1267 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1268 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr2),
1269 ntohs(host->interface->interface[i].port)));
1270 host->host = host->interface->interface[i].addr;
1271 host->port = host->interface->interface[i].port;
1272 h_AddHostToAddrHashTable_r(host->host, host->port, host);
1277 if (i == host->interface->numberOfInterfaces) {
1279 ("Removed only address for host %" AFS_PTR_FMT " (%s:%d), no valid alternate interfaces, deleting host.\n",
1280 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1281 host->hostFlags |= HOSTDELETED;
1282 /* addr/port was removed from the hash table */
1286 rxconn = host->callback_rxcon;
1287 host->callback_rxcon = NULL;
1290 rx_DestroyConnection(rxconn);
1295 sc = rxnull_NewClientSecurityObject();
1296 host->callback_rxcon =
1297 rx_NewConnection(host->host, host->port, 1, sc, 0);
1298 rx_SetConnDeadTime(host->callback_rxcon, 50);
1299 rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
1302 /* not the primary addr/port, just invalidate it */
1303 invalidateInterfaceAddr_r(host, addr, port);
1311 createHostAddrHashChain_r(int index, afs_uint32 addr, afs_uint16 port, struct host *host)
1313 struct h_AddrHashChain *chain;
1316 /* insert into beginning of list for this bucket */
1317 chain = (struct h_AddrHashChain *)malloc(sizeof(struct h_AddrHashChain));
1319 ViceLogThenPanic(0, ("Failed malloc in h_AddHostToAddrHashTable_r\n"));
1321 chain->hostPtr = host;
1322 chain->next = hostAddrHashTable[index];
1325 hostAddrHashTable[index] = chain;
1326 ViceLog(125, ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " added as %s:%d\n",
1327 host, afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1331 * Resolve host address conflicts when hashing by address.
1333 * @param[in] addr an ip address of the interface
1334 * @param[in] port the port of the interface
1335 * @param[in] newHost the host being added with this address
1336 * @param[in] oldHost the host previously added with this address
1339 reconcileHosts_r(afs_uint32 addr, afs_uint16 port, struct host *newHost,
1340 struct host *oldHost)
1342 struct rx_connection *cb = NULL;
1344 struct interfaceAddr interf;
1346 afsUUID *newHostUuid = &nulluuid;
1347 afsUUID *oldHostUuid = &nulluuid;
1351 ("reconcileHosts_r: addr %s:%d newHost %" AFS_PTR_FMT " oldHost %"
1352 AFS_PTR_FMT, afs_inet_ntoa_r(addr, hoststr), ntohs(port),
1355 osi_Assert(oldHost != newHost);
1356 caps.Capabilities_val = NULL;
1359 sc = rxnull_NewClientSecurityObject();
1362 cb = rx_NewConnection(addr, port, 1, sc, 0);
1363 rx_SetConnDeadTime(cb, 50);
1364 rx_SetConnHardDeadTime(cb, AFS_HARDDEADTIME);
1369 code = RXAFSCB_TellMeAboutYourself(cb, &interf, &caps);
1370 if (code == RXGEN_OPCODE) {
1371 code = RXAFSCB_WhoAreYou(cb, &interf);
1375 if (code == RXGEN_OPCODE ||
1376 (code == 0 && afs_uuid_equal(&interf.uuid, &nulluuid))) {
1378 ("reconcileHosts_r: WhoAreYou not supported for connection (%s:%d), error %d\n",
1379 afs_inet_ntoa_r(addr, hoststr), ntohs(port), code));
1384 ("reconcileHosts_r: WhoAreYou failed for connection (%s:%d), error %d\n",
1385 afs_inet_ntoa_r(addr, hoststr), ntohs(port), code));
1389 /* Since lock was dropped, the hosts may have been deleted during the rpcs. */
1390 if ((newHost->hostFlags & HOSTDELETED)
1391 && (oldHost->hostFlags & HOSTDELETED)) {
1393 ("reconcileHosts_r: new and old hosts were deleted during probe.\n"));
1397 /* A check can be done if at least one of the hosts has a uuid. It
1398 * is an error if the hosts have the same (not null) uuid. */
1399 if ((!(newHost->hostFlags & HOSTDELETED)) && newHost->interface) {
1400 newHostUuid = &(newHost->interface->uuid);
1402 if ((!(oldHost->hostFlags & HOSTDELETED)) && oldHost->interface) {
1403 oldHostUuid = &(oldHost->interface->uuid);
1405 if (afs_uuid_equal(newHostUuid, &nulluuid) &&
1406 afs_uuid_equal(oldHostUuid, &nulluuid)) {
1408 ("reconcileHosts_r: Cannot reconcile hosts for connection (%s:%d), no uuids\n",
1409 afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1412 if (afs_uuid_equal(newHostUuid, oldHostUuid)) {
1414 ("reconcileHosts_r: Cannot reconcile hosts for connection (%s:%d), same uuids\n",
1415 afs_inet_ntoa_r(addr, hoststr), ntohs(port)));
1419 /* Determine which host should be hashed */
1420 if ((!(newHost->hostFlags & HOSTDELETED))
1421 && afs_uuid_equal(newHostUuid, &(interf.uuid))) {
1422 /* Install the new host into the hash before removing the stale
1423 * addresses. Walk the hash chain again since the hash table may have
1424 * been changed when the host lock was dropped to get the uuid. */
1425 struct h_AddrHashChain *chain;
1426 int index = h_HashIndex(addr);
1427 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1428 if (chain->addr == addr && chain->port == port) {
1429 chain->hostPtr = newHost;
1430 removeAddress_r(oldHost, addr, port);
1434 createHostAddrHashChain_r(index, addr, port, newHost);
1435 removeAddress_r(oldHost, addr, port);
1438 if ((!(oldHost->hostFlags & HOSTDELETED))
1439 && afs_uuid_equal(oldHostUuid, &(interf.uuid))) {
1440 removeAddress_r(newHost, addr, port);
1445 if (!(newHost->hostFlags & HOSTDELETED)) {
1446 removeAddress_r(newHost, addr, port);
1448 if (!(oldHost->hostFlags & HOSTDELETED)) {
1449 removeAddress_r(oldHost, addr, port);
1453 h_Release_r(newHost);
1454 h_Release_r(oldHost);
1455 rx_DestroyConnection(cb);
1459 /* inserts a new HashChain structure corresponding to this address */
1461 h_AddHostToAddrHashTable_r(afs_uint32 addr, afs_uint16 port, struct host *host)
1464 struct h_AddrHashChain *chain;
1467 /* hash into proper bucket */
1468 index = h_HashIndex(addr);
1470 /* don't add the same address:port pair entry multiple times */
1471 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
1472 if (chain->addr == addr && chain->port == port) {
1473 if (chain->hostPtr == host) {
1475 ("h_AddHostToAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) already hashed\n",
1476 host, afs_inet_ntoa_r(chain->addr, hoststr),
1477 ntohs(chain->port)));
1480 if (!(chain->hostPtr->hostFlags & HOSTDELETED)) {
1481 /* attempt to resolve host address collision */
1482 reconcileHosts_r(addr, port, host, chain->hostPtr);
1487 createHostAddrHashChain_r(index, addr, port, host);
1491 * This is called with host locked and held.
1492 * It is called to either validate or add an additional interface
1493 * address/port on the specified host.
1495 * All addresses are in network byte order.
1498 addInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1502 struct Interface *interface;
1503 char hoststr[16], hoststr2[16];
1506 osi_Assert(host->interface);
1509 * Make sure this address is on the list of known addresses
1512 number = host->interface->numberOfInterfaces;
1513 for (i = 0; i < number; i++) {
1514 if (host->interface->interface[i].addr == addr &&
1515 host->interface->interface[i].port == port) {
1517 ("addInterfaceAddr : found host %" AFS_PTR_FMT " (%s:%d) adding %s:%d%s\n",
1518 host, afs_inet_ntoa_r(host->host, hoststr),
1519 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1520 ntohs(port), host->interface->interface[i].valid ? "" :
1523 if (host->interface->interface[i].valid == 0) {
1524 host->interface->interface[i].valid = 1;
1525 h_AddHostToAddrHashTable_r(addr, port, host);
1531 ViceLog(125, ("addInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) adding %s:%d\n",
1532 host, afs_inet_ntoa_r(host->host, hoststr),
1533 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1536 interface = (struct Interface *)
1537 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * number));
1539 ViceLogThenPanic(0, ("Failed malloc in addInterfaceAddr_r\n"));
1541 interface->numberOfInterfaces = number + 1;
1542 interface->uuid = host->interface->uuid;
1543 for (i = 0; i < number; i++)
1544 interface->interface[i] = host->interface->interface[i];
1546 /* Add the new valid interface */
1547 interface->interface[number].addr = addr;
1548 interface->interface[number].port = port;
1549 interface->interface[number].valid = 1;
1550 h_AddHostToAddrHashTable_r(addr, port, host);
1551 free(host->interface);
1552 host->interface = interface;
1559 * This is called with host locked and held.
1561 * All addresses are in network byte order.
1564 removeInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port)
1568 struct Interface *interface;
1569 char hoststr[16], hoststr2[16];
1572 osi_Assert(host->interface);
1574 ViceLog(125, ("removeInterfaceAddr : host %" AFS_PTR_FMT " (%s:%d) addr %s:%d\n",
1575 host, afs_inet_ntoa_r(host->host, hoststr),
1576 ntohs(host->port), afs_inet_ntoa_r(addr, hoststr2),
1580 * Make sure this address is on the list of known addresses
1583 interface = host->interface;
1584 number = host->interface->numberOfInterfaces;
1585 for (i = 0; i < number; i++) {
1586 if (interface->interface[i].addr == addr &&
1587 interface->interface[i].port == port) {
1588 if (interface->interface[i].valid)
1589 h_DeleteHostFromAddrHashTable_r(addr, port, host);
1591 for (; i < number; i++) {
1592 interface->interface[i] = interface->interface[i+1];
1594 interface->numberOfInterfaces = number;
1605 h_threadquota(int waiting)
1610 } else if (lwps > 32) {
1613 } else if (lwps > 16) {
1623 /* If found, host is returned with refCount incremented */
1625 h_GetHost_r(struct rx_connection *tcon)
1628 struct host *oldHost;
1630 struct interfaceAddr interf;
1631 int interfValid = 0;
1632 struct Identity *identP = NULL;
1635 char hoststr[16], hoststr2[16];
1637 struct rx_connection *cb_conn = NULL;
1638 struct rx_connection *cb_in = NULL;
1640 caps.Capabilities_val = NULL;
1642 haddr = rxr_HostOf(tcon);
1643 hport = rxr_PortOf(tcon);
1646 rx_DestroyConnection(cb_in);
1649 if (caps.Capabilities_val)
1650 free(caps.Capabilities_val);
1651 caps.Capabilities_val = NULL;
1652 caps.Capabilities_len = 0;
1655 if (h_Lookup_r(haddr, hport, &host))
1657 identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
1658 if (host && !identP && !(host->Console & 1)) {
1659 /* This is a new connection, and we already have a host
1660 * structure for this address. Verify that the identity
1661 * of the caller matches the identity in the host structure.
1663 if ((host->hostFlags & HWHO_INPROGRESS) &&
1664 h_threadquota(host->lock.num_waiting)) {
1670 if (!(host->hostFlags & ALTADDR) ||
1671 (host->hostFlags & HOSTDELETED)) {
1672 /* Another thread is doing initialization
1673 * or this host was deleted while we
1674 * waited for the lock. */
1677 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1678 host, afs_inet_ntoa_r(host->host, hoststr),
1679 ntohs(host->port)));
1683 host->hostFlags |= HWHO_INPROGRESS;
1684 host->hostFlags &= ~ALTADDR;
1686 /* We received a new connection from an IP address/port
1687 * that is associated with 'host' but the address/port of
1688 * the callback connection does not have to match it.
1689 * If there is a match, we can use the existing callback
1690 * connection to verify the UUID. If they do not match
1691 * we need to use a new callback connection to verify the
1692 * UUID of the incoming caller and perhaps use the old
1693 * callback connection to verify that the old address/port
1697 cb_conn = host->callback_rxcon;
1698 rx_GetConnection(cb_conn);
1700 if (haddr == host->host && hport == host->port) {
1701 /* The existing callback connection matches the
1702 * incoming connection so just use it.
1705 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1706 if (code == RXGEN_OPCODE)
1707 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1709 /* We do not have a match. Create a new connection
1710 * for the new addr/port and use multi_Rx to probe
1711 * both of them simultaneously.
1714 sc = rxnull_NewClientSecurityObject();
1715 cb_in = rx_NewConnection(haddr, hport, 1, sc, 0);
1716 rx_SetConnDeadTime(cb_in, 50);
1717 rx_SetConnHardDeadTime(cb_in, AFS_HARDDEADTIME);
1720 RXAFSCB_TellMeAboutYourself(cb_in, &interf, &caps);
1721 if (code == RXGEN_OPCODE)
1722 code = RXAFSCB_WhoAreYou(cb_in, &interf);
1724 rx_PutConnection(cb_conn);
1727 if ((code == RXGEN_OPCODE) ||
1728 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1729 identP = (struct Identity *)malloc(sizeof(struct Identity));
1731 ViceLogThenPanic(0, ("Failed malloc in h_GetHost_r\n"));
1734 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1735 if (cb_in == NULL) {
1736 /* The host on this connection was unable to respond to
1737 * the WhoAreYou. We will treat this as a new connection
1738 * from the existing host. The worst that can happen is
1739 * that we maintain some extra callback state information */
1740 if (host->interface) {
1742 ("Host %" AFS_PTR_FMT " (%s:%d) used to support WhoAreYou, deleting.\n",
1744 afs_inet_ntoa_r(host->host, hoststr),
1745 ntohs(host->port)));
1746 host->hostFlags |= HOSTDELETED;
1747 host->hostFlags &= ~HWHO_INPROGRESS;
1754 /* The incoming connection does not support WhoAreYou but
1755 * the original one might have. Use removeAddress_r() to
1756 * remove this addr/port from the host that was found.
1757 * If there are no more addresses left for the host it
1758 * will be deleted. Then we retry.
1760 removeAddress_r(host, haddr, hport);
1761 host->hostFlags &= ~HWHO_INPROGRESS;
1762 host->hostFlags |= ALTADDR;
1768 } else if (code == 0) {
1770 identP = (struct Identity *)malloc(sizeof(struct Identity));
1772 ViceLogThenPanic(0, ("Failed malloc in h_GetHost_r\n"));
1775 identP->uuid = interf.uuid;
1776 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1777 /* Check whether the UUID on this connection matches
1778 * the UUID in the host structure. If they don't match
1779 * then this is not the same host as before. */
1780 if (!host->interface
1781 || !afs_uuid_equal(&interf.uuid, &host->interface->uuid)) {
1784 ("Uuid doesn't match connection (%s:%d).\n",
1785 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport)));
1786 removeAddress_r(host, haddr, hport);
1789 ("Uuid doesn't match host %" AFS_PTR_FMT " (%s:%d).\n",
1790 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
1792 removeAddress_r(host, host->host, host->port);
1794 host->hostFlags &= ~HWHO_INPROGRESS;
1795 host->hostFlags |= ALTADDR;
1801 /* the UUID matched the client at the incoming addr/port
1802 * but this is not the address of the active callback
1803 * connection. Try that connection and see if the client
1804 * is still there and if the reported UUID is the same.
1807 afsUUID uuid = host->interface->uuid;
1808 cb_conn = host->callback_rxcon;
1809 rx_GetConnection(cb_conn);
1810 rx_SetConnDeadTime(cb_conn, 2);
1811 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1813 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
1815 rx_SetConnDeadTime(cb_conn, 50);
1816 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
1817 rx_PutConnection(cb_conn);
1820 /* The primary address is either not responding or
1821 * is not the client we are looking for. Need to
1822 * remove the primary address and add swap in the new
1823 * callback connection, and destroy the old one.
1825 struct rx_connection *rxconn;
1826 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
1828 afs_inet_ntoa_r(host->host, hoststr),
1829 ntohs(host->port),code2));
1832 * make sure we add and then remove. otherwise, we
1833 * might end up with no valid interfaces after the
1834 * remove and the host will have been marked deleted.
1836 addInterfaceAddr_r(host, haddr, hport);
1837 removeInterfaceAddr_r(host, host->host, host->port);
1840 rxconn = host->callback_rxcon;
1841 host->callback_rxcon = cb_in;
1846 * If rx_DestroyConnection calls h_FreeConnection we
1847 * will deadlock on the host_glock_mutex. Work around
1848 * the problem by unhooking the client from the
1849 * connection before destroying the connection.
1851 rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
1852 rx_DestroyConnection(rxconn);
1858 /* A callback to the incoming connection address is failing.
1859 * Assume that the addr/port is no longer associated with the host
1860 * returned by h_Lookup_r.
1863 ("CB: WhoAreYou failed for connection (%s:%d) , error %d\n",
1864 afs_inet_ntoa_r(haddr, hoststr), ntohs(hport), code));
1865 removeAddress_r(host, haddr, hport);
1866 host->hostFlags &= ~HWHO_INPROGRESS;
1867 host->hostFlags |= ALTADDR;
1871 rx_DestroyConnection(cb_in);
1876 ("CB: WhoAreYou failed for host %" AFS_PTR_FMT " (%s:%d), error %d\n",
1877 host, afs_inet_ntoa_r(host->host, hoststr),
1878 ntohs(host->port), code));
1879 host->hostFlags |= VENUSDOWN;
1882 if (caps.Capabilities_val
1883 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
1884 host->hostFlags |= HERRORTRANS;
1886 host->hostFlags &= ~(HERRORTRANS);
1887 host->hostFlags |= ALTADDR;
1888 host->hostFlags &= ~HWHO_INPROGRESS;
1891 if (!(host->hostFlags & ALTADDR)) {
1892 /* another thread is doing the initialisation */
1894 ("Host %" AFS_PTR_FMT " (%s:%d) waiting for host-init to complete\n",
1895 host, afs_inet_ntoa_r(host->host, hoststr),
1896 ntohs(host->port)));
1900 ("Host %" AFS_PTR_FMT " (%s:%d) starting h_Lookup again\n",
1901 host, afs_inet_ntoa_r(host->host, hoststr),
1902 ntohs(host->port)));
1906 /* We need to check whether the identity in the host structure
1907 * matches the identity on the connection. If they don't match
1908 * then treat this a new host. */
1909 if (!(host->Console & 1)
1910 && ((!identP->valid && host->interface)
1911 || (identP->valid && !host->interface)
1913 && !afs_uuid_equal(&identP->uuid,
1914 &host->interface->uuid)))) {
1915 char uuid1[128], uuid2[128];
1917 afsUUID_to_string(&identP->uuid, uuid1, 127);
1918 if (host->interface)
1919 afsUUID_to_string(&host->interface->uuid, uuid2, 127);
1921 ("CB: new identity for host %p (%s:%d), "
1922 "deleting(%x %p %s %s)\n",
1923 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
1924 identP->valid, host->interface,
1925 identP->valid ? uuid1 : "no_uuid",
1926 host->interface ? uuid2 : "no_uuid"));
1928 /* The host in the cache is not the host for this connection */
1930 host->hostFlags |= HOSTDELETED;
1936 host = h_Alloc_r(tcon); /* returned held and locked */
1937 h_gethostcps_r(host, FT_ApproxTime());
1938 if (!(host->Console & 1)) {
1940 cb_conn = host->callback_rxcon;
1941 rx_GetConnection(cb_conn);
1942 host->hostFlags |= HWHO_INPROGRESS;
1945 RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
1946 if (code == RXGEN_OPCODE)
1947 code = RXAFSCB_WhoAreYou(cb_conn, &interf);
1948 rx_PutConnection(cb_conn);
1951 if ((code == RXGEN_OPCODE) ||
1952 ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
1955 (struct Identity *)malloc(sizeof(struct Identity));
1960 ViceLogThenPanic(0, ("Failed malloc in h_GetHost_r\n"));
1964 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1966 ("Host %" AFS_PTR_FMT " (%s:%d) does not support WhoAreYou.\n",
1967 host, afs_inet_ntoa_r(host->host, hoststr),
1968 ntohs(host->port)));
1970 } else if (code == 0) {
1973 (struct Identity *)malloc(sizeof(struct Identity));
1978 ViceLogThenPanic(0, ("Failed malloc in h_GetHost_r\n"));
1982 identP->uuid = interf.uuid;
1984 rx_SetSpecific(tcon, rxcon_ident_key, identP);
1986 ("WhoAreYou success on host %" AFS_PTR_FMT " (%s:%d)\n",
1987 host, afs_inet_ntoa_r(host->host, hoststr),
1988 ntohs(host->port)));
1990 if (code == 0 && !identP->valid) {
1991 cb_conn = host->callback_rxcon;
1992 rx_GetConnection(cb_conn);
1994 code = RXAFSCB_InitCallBackState(cb_conn);
1995 rx_PutConnection(cb_conn);
1998 } else if (code == 0) {
1999 oldHost = h_LookupUuid_r(&identP->uuid);
2004 if (oldHost->hostFlags & HOSTDELETED) {
2005 h_Unlock_r(oldHost);
2006 h_Release_r(oldHost);
2014 oldHost->hostFlags |= HWHO_INPROGRESS;
2016 if (oldHost->interface) {
2018 afsUUID uuid = oldHost->interface->uuid;
2019 cb_conn = oldHost->callback_rxcon;
2020 rx_GetConnection(cb_conn);
2021 rx_SetConnDeadTime(cb_conn, 2);
2022 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
2024 code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
2026 rx_SetConnDeadTime(cb_conn, 50);
2027 rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
2028 rx_PutConnection(cb_conn);
2031 /* The primary address is either not responding or
2032 * is not the client we are looking for.
2033 * MultiProbeAlternateAddress_r() will remove the
2034 * alternate interfaces that do not have the same
2036 ViceLog(0,("CB: ProbeUuid for host %" AFS_PTR_FMT " (%s:%d) failed %d\n",
2038 afs_inet_ntoa_r(oldHost->host, hoststr),
2039 ntohs(oldHost->port),code2));
2040 MultiProbeAlternateAddress_r(oldHost);
2047 /* This is a new address for an existing host. Update
2048 * the list of interfaces for the existing host and
2049 * delete the host structure we just allocated. */
2051 /* prevent warnings while manipulating interface lists */
2052 host->hostFlags |= HOSTDELETED;
2054 if (oldHost->host != haddr || oldHost->port != hport) {
2055 struct rx_connection *rxconn;
2058 ("CB: Host %" AFS_PTR_FMT " (%s:%d) has new addr %s:%d\n",
2060 afs_inet_ntoa_r(oldHost->host, hoststr2),
2061 ntohs(oldHost->port),
2062 afs_inet_ntoa_r(haddr, hoststr),
2065 * add then remove. otherwise the host may get marked
2066 * deleted if we removed the only valid address.
2068 addInterfaceAddr_r(oldHost, haddr, hport);
2069 if (probefail || oldHost->host == haddr) {
2071 * The probe failed which means that the old
2072 * address is either unreachable or is not the
2073 * same host we were just contacted by. We will
2074 * also remove addresses if only the port has
2075 * changed because that indicates the client
2078 removeInterfaceAddr_r(oldHost, oldHost->host, oldHost->port);
2081 struct Interface *interface = oldHost->interface;
2082 int number = oldHost->interface->numberOfInterfaces;
2083 for (i = 0; i < number; i++) {
2084 if (interface->interface[i].addr == haddr &&
2085 interface->interface[i].port != hport) {
2087 * We have just been contacted by a client
2088 * that has been seen from behind a NAT
2089 * and at least one other address.
2091 removeInterfaceAddr_r(oldHost, haddr,
2092 interface->interface[i].port);
2097 h_AddHostToAddrHashTable_r(haddr, hport, oldHost);
2098 oldHost->host = haddr;
2099 oldHost->port = hport;
2100 rxconn = oldHost->callback_rxcon;
2101 oldHost->callback_rxcon = host->callback_rxcon;
2102 host->callback_rxcon = rxconn;
2104 /* don't destroy rxconn here; let h_TossStuff_r
2105 * take care of that via h_Release_r below */
2107 host->hostFlags &= ~HWHO_INPROGRESS;
2109 /* release host because it was allocated by h_Alloc_r */
2112 /* the new host is held and locked */
2114 /* This really is a new host */
2115 h_AddHostToUuidHashTable_r(&identP->uuid, host);
2116 cb_conn = host->callback_rxcon;
2117 rx_GetConnection(cb_conn);
2120 RXAFSCB_InitCallBackState3(cb_conn,
2122 rx_PutConnection(cb_conn);
2127 ("InitCallBackState3 success on host %" AFS_PTR_FMT " (%s:%d)\n",
2128 host, afs_inet_ntoa_r(host->host, hoststr),
2129 ntohs(host->port)));
2130 osi_Assert(interfValid == 1);
2131 initInterfaceAddr_r(host, &interf);
2137 ("CB: RCallBackConnectBack failed for %" AFS_PTR_FMT " (%s:%d)\n",
2138 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
2139 host->hostFlags |= VENUSDOWN;
2142 ("CB: RCallBackConnectBack succeeded for %" AFS_PTR_FMT " (%s:%d)\n",
2143 host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
2144 host->hostFlags |= RESETDONE;
2147 if (caps.Capabilities_val
2148 && (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
2149 host->hostFlags |= HERRORTRANS;
2151 host->hostFlags &= ~(HERRORTRANS);
2152 host->hostFlags |= ALTADDR; /* host structure initialization complete */
2153 host->hostFlags &= ~HWHO_INPROGRESS;
2158 if (caps.Capabilities_val)
2159 free(caps.Capabilities_val);
2160 caps.Capabilities_val = NULL;
2161 caps.Capabilities_len = 0;
2163 rx_DestroyConnection(cb_in);
2171 static char localcellname[PR_MAXNAMELEN + 1];
2172 char local_realms[AFS_NUM_LREALMS][AFS_REALM_SZ];
2173 int num_lrealms = -1;
2177 h_InitHostPackage(void)
2179 memset(&nulluuid, 0, sizeof(afsUUID));
2180 afsconf_GetLocalCell(confDir, localcellname, PR_MAXNAMELEN);
2181 if (num_lrealms == -1) {
2183 for (i=0; i<AFS_NUM_LREALMS; i++) {
2184 if (afs_krb_get_lrealm(local_realms[i], i) != 0 /*KSUCCESS*/)
2190 ("afs_krb_get_lrealm failed, using %s.\n",
2192 strncpy(local_realms[0], localcellname, AFS_REALM_SZ);
2198 /* initialize the rest of the local realms to nullstring for debugging */
2199 for (; i<AFS_NUM_LREALMS; i++)
2200 local_realms[i][0] = '\0';
2202 rxcon_ident_key = rx_KeyCreate((rx_destructor_t) free);
2203 rxcon_client_key = rx_KeyCreate((rx_destructor_t) 0);
2204 MUTEX_INIT(&host_glock_mutex, "host glock", MUTEX_DEFAULT, 0);
2208 MapName_r(char *aname, char *acell, afs_int32 * aval)
2213 afs_int32 anamelen, cnamelen;
2217 anamelen = strlen(aname);
2218 if (anamelen >= PR_MAXNAMELEN)
2219 return -1; /* bad name -- caller interprets this as anonymous, but retries later */
2221 lnames.namelist_len = 1;
2222 lnames.namelist_val = (prname *) aname; /* don't malloc in the common case */
2223 lids.idlist_len = 0;
2224 lids.idlist_val = NULL;
2226 cnamelen = strlen(acell);
2228 if (afs_is_foreign_ticket_name(aname, NULL, acell, localcellname)) {
2230 ("MapName: cell is foreign. cell=%s, localcell=%s, localrealms={%s,%s,%s,%s}\n",
2231 acell, localcellname, local_realms[0],local_realms[1],local_realms[2],local_realms[3]));
2232 if ((anamelen + cnamelen + 1) >= PR_MAXNAMELEN) {
2234 ("MapName: Name too long, using AnonymousID for %s@%s\n",
2236 *aval = AnonymousID;
2239 foreign = 1; /* attempt cross-cell authentication */
2240 tname = (char *)malloc(PR_MAXNAMELEN);
2242 ViceLogThenPanic(0, ("Failed malloc in MapName_r\n"));
2244 strcpy(tname, aname);
2245 tname[anamelen] = '@';
2246 strcpy(tname + anamelen + 1, acell);
2247 lnames.namelist_val = (prname *) tname;
2252 code = hpr_NameToId(&lnames, &lids);
2255 if (lids.idlist_val) {
2256 *aval = lids.idlist_val[0];
2257 if (*aval == AnonymousID) {
2259 ("MapName: NameToId on %s returns anonymousID\n",
2260 lnames.namelist_val[0]));
2262 free(lids.idlist_val); /* return parms are not malloced in stub if server proc aborts */
2265 ("MapName: NameToId on '%s' is unknown\n",
2266 lnames.namelist_val[0]));
2272 free(lnames.namelist_val); /* We allocated this above, so we must free it now. */
2280 /* NOTE: this returns the client with a Write lock and a refCount */
2282 h_ID2Client(afs_int32 vid)
2284 struct client *client;
2289 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
2290 if (host->hostFlags & HOSTDELETED)
2292 for (client = host->FirstClient; client; client = client->next) {
2293 if (!client->deleted && client->ViceId == vid) {
2296 ObtainWriteLock(&client->lock);
2301 if (count != hostCount) {
2302 ViceLog(0, ("h_ID2Client found %d of %d hosts\n", count, hostCount));
2303 } else if (host != NULL) {
2304 ViceLog(0, ("h_ID2Client found more than %d hosts\n", hostCount));
2305 ShutDownAndCore(PANIC);
2313 * Called by the server main loop. Returns a h_Held client, which must be
2314 * released later the main loop. Allocates a client if the matching one
2315 * isn't around. The client is returned with its reference count incremented
2316 * by one. The caller must call h_ReleaseClient_r when finished with
2319 * The refCount on client->host is returned incremented. h_ReleaseClient_r
2320 * does not decrement the refCount on client->host.
2323 h_FindClient_r(struct rx_connection *tcon)
2325 struct client *client;
2326 struct host *host = NULL;
2327 struct client *oldClient;
2328 afs_int32 viceid = 0;
2332 #if (64-MAXKTCNAMELEN)
2333 ticket name length != 64
2337 char uname[PR_MAXNAMELEN];
2338 char tcell[MAXKTCREALMLEN];
2342 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2343 if (client && client->sid == rxr_CidOf(tcon)
2344 && client->VenusEpoch == rxr_GetEpoch(tcon)
2345 && !(client->host->hostFlags & HOSTDELETED)) {
2348 h_Hold_r(client->host);
2349 if (!client->deleted && client->prfail != 2) {
2350 /* Could add shared lock on client here */
2351 /* note that we don't have to lock entry in this path to
2352 * ensure CPS is initialized, since we don't call rx_SetSpecific
2353 * until initialization is done, and we only get here if
2354 * rx_GetSpecific located the client structure.
2359 ObtainWriteLock(&client->lock); /* released at end */
2365 authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
2367 ("FindClient: authenticating connection: authClass=%d\n",
2369 if (authClass == 1) {
2370 /* A bcrypt tickets, no longer supported */
2371 ViceLog(1, ("FindClient: bcrypt ticket, using AnonymousID\n"));
2372 viceid = AnonymousID;
2373 expTime = 0x7fffffff;
2374 } else if (authClass == 2) {
2377 /* kerberos ticket */
2378 code = rxkad_GetServerInfo(tcon, /*level */ 0, (afs_uint32 *)&expTime,
2379 tname, tinst, tcell, &kvno);
2381 ViceLog(1, ("Failed to get rxkad ticket info\n"));
2382 viceid = AnonymousID;
2383 expTime = 0x7fffffff;
2385 int ilen = strlen(tinst);
2387 ("FindClient: rxkad conn: name=%s,inst=%s,cell=%s,exp=%d,kvno=%d\n",
2388 tname, tinst, tcell, expTime, kvno));
2389 strncpy(uname, tname, sizeof(uname));
2391 if (strlen(uname) + 1 + ilen >= sizeof(uname))
2394 strcat(uname, tinst);
2396 /* translate the name to a vice id */
2397 code = MapName_r(uname, tcell, &viceid);
2401 ("failed to map name=%s, cell=%s -> code=%d\n", uname,
2404 viceid = AnonymousID;
2405 expTime = 0x7fffffff;
2409 viceid = AnonymousID; /* unknown security class */
2410 expTime = 0x7fffffff;
2413 if (!client) { /* loop */
2414 host = h_GetHost_r(tcon); /* Returns with incremented refCount */
2420 /* First try to find the client structure */
2421 for (client = host->FirstClient; client; client = client->next) {
2422 if (!client->deleted && (client->sid == rxr_CidOf(tcon))
2423 && (client->VenusEpoch == rxr_GetEpoch(tcon))) {
2426 ObtainWriteLock(&client->lock);
2432 /* Still no client structure - get one */
2435 if (host->hostFlags & HOSTDELETED) {
2440 /* Retry 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))) {
2445 goto retryfirstclient;
2450 ObtainWriteLock(&client->lock);
2451 client->refCount = 1;
2452 client->host = host;
2453 #if FS_STATS_DETAILED
2454 client->InSameNetwork = host->InSameNetwork;
2455 #endif /* FS_STATS_DETAILED */
2456 client->ViceId = viceid;
2457 client->expTime = expTime; /* rx only */
2458 client->authClass = authClass; /* rx only */
2459 client->sid = rxr_CidOf(tcon);
2460 client->VenusEpoch = rxr_GetEpoch(tcon);
2461 client->CPS.prlist_val = NULL;
2462 client->CPS.prlist_len = 0;
2466 client->prfail = fail;
2468 if (!(client->CPS.prlist_val) || (viceid != client->ViceId)) {
2469 client->CPS.prlist_len = 0;
2470 if (client->CPS.prlist_val && (client->ViceId != ANONYMOUSID))
2471 free(client->CPS.prlist_val);
2472 client->CPS.prlist_val = NULL;
2473 client->ViceId = viceid;
2474 client->expTime = expTime;
2476 if (viceid == ANONYMOUSID) {
2477 client->CPS.prlist_len = AnonCPS.prlist_len;
2478 client->CPS.prlist_val = AnonCPS.prlist_val;
2481 code = hpr_GetCPS(viceid, &client->CPS);
2486 ("pr_GetCPS failed(%d) for user %d, host %" AFS_PTR_FMT " (%s:%d)\n",
2487 code, viceid, client->host,
2488 afs_inet_ntoa_r(client->host->host,hoststr),
2489 ntohs(client->host->port)));
2491 /* Although ubik_Call (called by pr_GetCPS) traverses thru
2492 * all protection servers and reevaluates things if no
2493 * sync server or quorum is found we could still end up
2494 * with one of these errors. In such case we would like to
2495 * reevaluate the rpc call to find if there's cps for this
2496 * guy. We treat other errors (except network failures
2497 * ones - i.e. code < 0) as an indication that there is no
2498 * CPS for this host. Ideally we could like to deal this
2499 * problem the other way around (i.e. if code == NOCPS
2500 * ignore else retry next time) but the problem is that
2501 * there're other errors (i.e. EPERM) for which we don't
2502 * want to retry and we don't know the whole code list!
2504 if (code < 0 || code == UNOQUORUM || code == UNOTSYNC)
2508 /* the disabling of system:administrators is so iffy and has so many
2509 * possible failure modes that we will disable it again */
2510 /* Turn off System:Administrator for safety
2511 * if (AL_IsAMember(SystemId, client->CPS) == 0)
2512 * osi_Assert(AL_DisableGroup(SystemId, client->CPS) == 0); */
2515 /* Now, tcon may already be set to a rock, since we blocked with no host
2516 * or client locks set above in pr_GetCPS (XXXX some locking is probably
2517 * required). So, before setting the RPC's rock, we should disconnect
2518 * the RPC from the other client structure's rock.
2520 oldClient = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2521 if (oldClient && oldClient != client && oldClient->sid == rxr_CidOf(tcon)
2522 && oldClient->VenusEpoch == rxr_GetEpoch(tcon)) {
2524 if (!oldClient->deleted) {
2525 /* if we didn't create it, it's not ours to put back */
2527 ViceLog(0, ("FindClient: stillborn client %p(%x); "
2528 "conn %p (host %s:%d) had client %p(%x)\n",
2529 client, client->sid, tcon,
2530 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2531 ntohs(rxr_PortOf(tcon)),
2532 oldClient, oldClient->sid));
2533 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2534 free(client->CPS.prlist_val);
2535 client->CPS.prlist_val = NULL;
2536 client->CPS.prlist_len = 0;
2538 /* We should perhaps check for 0 here */
2540 ReleaseWriteLock(&client->lock);
2545 oldClient->refCount++;
2547 ObtainWriteLock(&oldClient->lock);
2551 ViceLog(0, ("FindClient: deleted client %p(%x) already had "
2552 "conn %p (host %s:%d), stolen by client %p(%x)\n",
2553 oldClient, oldClient->sid, tcon,
2554 afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2555 ntohs(rxr_PortOf(tcon)),
2556 client, client->sid));
2557 /* rx_SetSpecific will be done immediately below */
2560 /* Avoid chaining in more than once. */
2564 if (host->hostFlags & HOSTDELETED) {
2569 client->host = NULL;
2571 if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
2572 free(client->CPS.prlist_val);
2573 client->CPS.prlist_val = NULL;
2574 client->CPS.prlist_len = 0;
2577 ReleaseWriteLock(&client->lock);
2582 client->next = host->FirstClient;
2583 host->FirstClient = client;
2585 CurrentConnections++; /* increment number of connections */
2587 rx_SetSpecific(tcon, rxcon_client_key, client);
2588 ReleaseWriteLock(&client->lock);
2592 } /*h_FindClient_r */
2595 h_ReleaseClient_r(struct client *client)
2597 osi_Assert(client->refCount > 0);
2604 * Sigh: this one is used to get the client AGAIN within the individual
2605 * server routines. This does not bother h_Holding the host, since
2606 * this is assumed already have been done by the server main loop.
2607 * It does check tokens, since only the server routines can return the
2608 * VICETOKENDEAD error code
2611 GetClient(struct rx_connection *tcon, struct client **cp)
2613 struct client *client;
2618 client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
2619 if (client == NULL) {
2621 ("GetClient: no client in conn %p (host %s:%d), VBUSYING\n",
2622 tcon, afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
2623 ntohs(rxr_PortOf(tcon))));
2627 if (rxr_CidOf(tcon) != client->sid || rxr_GetEpoch(tcon) != client->VenusEpoch) {
2629 ("GetClient: tcon %p tcon sid %d client sid %d\n",
2630 tcon, rxr_CidOf(tcon), client->sid));
2634 if (client && client->LastCall > client->expTime && client->expTime) {
2636 ("Token for %s at %s:%d expired %d\n", h_UserName(client),
2637 afs_inet_ntoa_r(client->host->host, hoststr),
2638 ntohs(client->host->port), client->expTime));
2640 return VICETOKENDEAD;
2650 PutClient(struct client **cp)
2656 h_ReleaseClient_r(*cp);
2663 /* Client user name for short term use. Note that this is NOT inexpensive */
2665 h_UserName(struct client *client)
2667 static char User[PR_MAXNAMELEN + 1];
2671 lids.idlist_len = 1;
2672 lids.idlist_val = (afs_int32 *) malloc(1 * sizeof(afs_int32));
2673 if (!lids.idlist_val) {
2674 ViceLogThenPanic(0, ("Failed malloc in h_UserName\n"));
2676 lnames.namelist_len = 0;
2677 lnames.namelist_val = (prname *) 0;
2678 lids.idlist_val[0] = client->ViceId;
2679 if (hpr_IdToName(&lids, &lnames)) {
2680 /* We need to free id we alloced above! */
2681 free(lids.idlist_val);
2682 return "*UNKNOWN USER NAME*";
2684 strncpy(User, lnames.namelist_val[0], PR_MAXNAMELEN);
2685 free(lids.idlist_val);
2686 free(lnames.namelist_val);
2695 ("Total Client entries = %d, blocks = %d; Host entries = %d, blocks = %d\n",
2696 CEs, CEBlocks, HTs, HTBlocks));
2702 h_PrintClient(struct host *host, void *rock)
2704 StreamHandle_t *file = (StreamHandle_t *)rock;
2705 struct client *client;
2710 time_t LastCall, expTime;
2714 LastCall = host->LastCall;
2715 if (host->hostFlags & HOSTDELETED) {
2719 strftime(tbuffer, sizeof(tbuffer), "%a %b %d %T %Y",
2720 localtime_r(&LastCall, &tm));
2721 snprintf(tmpStr, sizeof tmpStr, "Host %s:%d down = %d, LastCall %s\n",
2722 afs_inet_ntoa_r(host->host, hoststr),
2723 ntohs(host->port), (host->hostFlags & VENUSDOWN),
2725 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2726 for (client = host->FirstClient; client; client = client->next) {
2727 if (!client->deleted) {
2728 expTime = client->expTime;
2729 strftime(tbuffer, sizeof(tbuffer), "%a %b %d %T %Y",
2730 localtime_r(&expTime, &tm));
2731 snprintf(tmpStr, sizeof tmpStr,
2732 " user id=%d, name=%s, sl=%s till %s\n",
2733 client->ViceId, h_UserName(client),
2734 client->authClass ? "Authenticated"
2735 : "Not authenticated",
2736 client->authClass ? tbuffer : "No Limit");
2737 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2738 snprintf(tmpStr, sizeof tmpStr, " CPS-%d is [",
2739 client->CPS.prlist_len);
2740 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2741 if (client->CPS.prlist_val) {
2742 for (i = 0; i < client->CPS.prlist_len; i++) {
2743 snprintf(tmpStr, sizeof tmpStr, " %d",
2744 client->CPS.prlist_val[i]);
2745 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2748 sprintf(tmpStr, "]\n");
2749 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2755 } /*h_PrintClient */
2760 * Print a list of clients, with last security level and token value seen,
2764 h_PrintClients(void)
2771 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_CLNTDUMP_FILEPATH, "w");
2775 ("Couldn't create client dump file %s\n",
2776 AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2779 now = FT_ApproxTime();
2780 strftime(tbuffer, sizeof(tbuffer), "%a %b %d %T %Y",
2781 localtime_r(&now, &tm));
2782 snprintf(tmpStr, sizeof tmpStr, "List of active users at %s\n\n",
2784 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2785 h_Enumerate(h_PrintClient, (char *)file);
2786 STREAM_REALLYCLOSE(file);
2787 ViceLog(0, ("Created client dump %s\n", AFSDIR_SERVER_CLNTDUMP_FILEPATH));
2794 h_DumpHost(struct host *host, void *rock)
2796 StreamHandle_t *file = (StreamHandle_t *)rock;
2803 snprintf(tmpStr, sizeof tmpStr,
2804 "ip:%s port:%d hidx:%d cbid:%d lock:%x last:%u active:%u "
2805 "down:%d del:%d cons:%d cldel:%d\n\t hpfailed:%d hcpsCall:%u "
2807 afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
2808 host->index, host->cblist, CheckLock(&host->lock),
2809 host->LastCall, host->ActiveCall, (host->hostFlags & VENUSDOWN),
2810 host->hostFlags & HOSTDELETED, host->Console,
2811 host->hostFlags & CLIENTDELETED, host->hcpsfailed,
2813 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2814 if (host->hcps.prlist_val)
2815 for (i = 0; i < host->hcps.prlist_len; i++) {
2816 snprintf(tmpStr, sizeof tmpStr, " %d", host->hcps.prlist_val[i]);
2817 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2819 sprintf(tmpStr, "] [");
2820 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2821 if (host->interface)
2822 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
2824 sprintf(tmpStr, " %s:%d",
2825 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
2826 ntohs(host->interface->interface[i].port));
2827 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2829 sprintf(tmpStr, "] refCount:%d hostFlags:%hu\n", host->refCount, host->hostFlags);
2830 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2842 StreamHandle_t *file = STREAM_OPEN(AFSDIR_SERVER_HOSTDUMP_FILEPATH, "w");
2849 ("Couldn't create host dump file %s\n",
2850 AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2853 now = FT_ApproxTime();
2854 strftime(tbuffer, sizeof(tbuffer), "%a %b %d %T %Y",
2855 localtime_r(&now, &tm));
2856 snprintf(tmpStr, sizeof tmpStr, "List of active hosts at %s\n\n", tbuffer);
2857 (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
2858 h_Enumerate(h_DumpHost, (char *)file);
2859 STREAM_REALLYCLOSE(file);
2860 ViceLog(0, ("Created host dump %s\n", AFSDIR_SERVER_HOSTDUMP_FILEPATH));
2864 #ifdef AFS_DEMAND_ATTACH_FS
2867 * host state serialization
2869 static int h_stateFillHeader(struct host_state_header * hdr);
2870 static int h_stateCheckHeader(struct host_state_header * hdr);
2871 static int h_stateAllocMap(struct fs_dump_state * state);
2872 static int h_stateSaveHost(struct host * host, void *rock);
2873 static int h_stateRestoreHost(struct fs_dump_state * state);
2874 static int h_stateRestoreIndex(struct host * h, void *rock);
2875 static int h_stateVerifyHost(struct host * h, void *rock);
2876 static int h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h,
2877 afs_uint32 addr, afs_uint16 port, int valid);
2878 static int h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h);
2879 static void h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out);
2880 static void h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out);
2883 /* this procedure saves all host state to disk for fast startup */
2885 h_stateSave(struct fs_dump_state * state)
2887 AssignInt64(state->eof_offset, &state->hdr->h_offset);
2890 ViceLog(0, ("h_stateSave: hostCount=%d\n", hostCount));
2892 /* invalidate host state header */
2893 memset(state->h_hdr, 0, sizeof(struct host_state_header));
2895 if (fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2896 sizeof(struct host_state_header))) {
2901 fs_stateIncEOF(state, sizeof(struct host_state_header));
2903 h_Enumerate_r(h_stateSaveHost, hostList, (char *)state);
2908 h_stateFillHeader(state->h_hdr);
2910 /* write the real header to disk */
2911 state->bail = fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
2912 sizeof(struct host_state_header));
2919 * host state serialization
2921 * this procedure restores all host state from a disk for fast startup
2924 h_stateRestore(struct fs_dump_state * state)
2928 /* seek to the right position and read in the host state header */
2929 if (fs_stateReadHeader(state, &state->hdr->h_offset, state->h_hdr,
2930 sizeof(struct host_state_header))) {
2935 /* check the validity of the header */
2936 if (h_stateCheckHeader(state->h_hdr)) {
2941 records = state->h_hdr->records;
2943 if (h_stateAllocMap(state)) {
2948 /* iterate over records restoring host state */
2949 for (i=0; i < records; i++) {
2950 if (h_stateRestoreHost(state) != 0) {
2961 h_stateRestoreIndices(struct fs_dump_state * state)
2963 h_Enumerate_r(h_stateRestoreIndex, hostList, (char *)state);
2968 h_stateRestoreIndex(struct host * h, void *rock)
2970 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2971 if (cb_OldToNew(state, h->cblist, &h->cblist)) {
2972 return H_ENUMERATE_BAIL(0);
2978 h_stateVerify(struct fs_dump_state * state)
2980 h_Enumerate_r(h_stateVerifyHost, hostList, (char *)state);
2985 h_stateVerifyHost(struct host * h, void* rock)
2987 struct fs_dump_state *state = (struct fs_dump_state *)rock;
2991 ViceLog(0, ("h_stateVerifyHost: error: NULL host pointer in linked list\n"));
2992 return H_ENUMERATE_BAIL(0);
2996 for (i = h->interface->numberOfInterfaces-1; i >= 0; i--) {
2997 if (h_stateVerifyAddrHash(state, h, h->interface->interface[i].addr,
2998 h->interface->interface[i].port,
2999 h->interface->interface[i].valid)) {
3003 if (h_stateVerifyUuidHash(state, h)) {
3006 } else if (h_stateVerifyAddrHash(state, h, h->host, h->port, 1)) {
3010 if (cb_stateVerifyHCBList(state, h)) {
3018 * verify a host is either in, or absent from, the addr hash table.
3020 * @param[in] state fs dump state
3021 * @param[in] h host we're dealing with
3022 * @param[in] addr addr to look for (NBO)
3023 * @param[in] port port to look for (NBO)
3024 * @param[in] valid 1 if we're verifying that the specified addr and port
3025 * in the hash table point to the specified host. 0 if we're
3026 * verifying that the specified addr and port do NOT point
3027 * to the specified host
3029 * @return operation status
3030 * @retval 1 failed to verify, bail out
3031 * @retval 0 verified successfully, all is well
3034 h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h,
3035 afs_uint32 addr, afs_uint16 port, int valid)
3037 int ret = 0, found = 0;
3038 struct host *host = NULL;
3039 struct h_AddrHashChain *chain;
3040 int index = h_HashIndex(addr);
3044 for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
3045 host = chain->hostPtr;
3047 afs_inet_ntoa_r(addr, tmp);
3048 ViceLog(0, ("h_stateVerifyAddrHash: error: addr hash chain has NULL host ptr (lookup addr %s)\n", tmp));
3052 if ((chain->addr == addr) && (chain->port == port)) {
3055 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr hash entry "
3056 "points to different host struct (%d, %d)\n",
3057 h->index, host->index));
3058 state->flags.warnings_generated = 1;
3062 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s:%u is "
3063 "marked invalid, but points to the containing "
3064 "host\n", afs_inet_ntoa_r(addr, tmp),
3065 (unsigned)htons(port)));
3073 if (chain_len > FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN) {
3074 ViceLog(0, ("h_stateVerifyAddrHash: error: hash chain length exceeds %d; assuming there's a loop\n",
3075 FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN));
3082 if (!found && valid) {
3083 afs_inet_ntoa_r(addr, tmp);
3084 if (state->mode == FS_STATE_LOAD_MODE) {
3085 ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s:%u not found in hash\n",
3086 tmp, (unsigned)htons(port)));
3090 ViceLog(0, ("h_stateVerifyAddrHash: warning: addr %s:%u not found in hash\n",
3091 tmp, (unsigned)htons(port)));
3092 state->flags.warnings_generated = 1;
3101 h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h)
3103 int ret = 0, found = 0;
3104 struct host *host = NULL;
3105 struct h_UuidHashChain *chain;
3106 afsUUID * uuidp = &h->interface->uuid;
3107 int index = h_UuidHashIndex(uuidp);
3111 for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
3112 host = chain->hostPtr;
3114 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
3115 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid hash chain has NULL host ptr (lookup uuid %s)\n", tmp));
3119 if (host->interface &&
3120 afs_uuid_equal(&host->interface->uuid, uuidp)) {
3122 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid hash entry points to different host struct (%d, %d)\n",
3123 h->index, host->index));
3124 state->flags.warnings_generated = 1;
3129 if (chain_len > FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN) {
3130 ViceLog(0, ("h_stateVerifyUuidHash: error: hash chain length exceeds %d; assuming there's a loop\n",
3131 FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN));
3139 afsUUID_to_string(uuidp, tmp, sizeof(tmp));
3140 if (state->mode == FS_STATE_LOAD_MODE) {
3141 ViceLog(0, ("h_stateVerifyUuidHash: error: uuid %s not found in hash\n", tmp));
3145 ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid %s not found in hash\n", tmp));
3146 state->flags.warnings_generated = 1;
3154 /* create the host state header structure */
3156 h_stateFillHeader(struct host_state_header * hdr)
3158 hdr->stamp.magic = HOST_STATE_MAGIC;
3159 hdr->stamp.version = HOST_STATE_VERSION;
3163 /* check the contents of the host state header structure */
3165 h_stateCheckHeader(struct host_state_header * hdr)
3169 if (hdr->stamp.magic != HOST_STATE_MAGIC) {
3170 ViceLog(0, ("check_host_state_header: invalid state header\n"));
3173 else if (hdr->stamp.version != HOST_STATE_VERSION) {
3174 ViceLog(0, ("check_host_state_header: unknown version number\n"));
3180 /* allocate the host id mapping table */
3182 h_stateAllocMap(struct fs_dump_state * state)
3184 state->h_map.len = state->h_hdr->index_max + 1;
3185 state->h_map.entries = (struct idx_map_entry_t *)
3186 calloc(state->h_map.len, sizeof(struct idx_map_entry_t));
3187 return (state->h_map.entries != NULL) ? 0 : 1;
3190 /* function called by h_Enumerate to save a host to disk */
3192 h_stateSaveHost(struct host * host, void* rock)
3194 struct fs_dump_state *state = (struct fs_dump_state *) rock;
3195 int if_len=0, hcps_len=0;
3196 struct hostDiskEntry hdsk;
3197 struct host_state_entry_header hdr;
3198 struct Interface * ifp = NULL;
3199 afs_int32 * hcps = NULL;
3200 struct iovec iov[4];
3203 memset(&hdr, 0, sizeof(hdr));
3205 if (state->h_hdr->index_max < host->index) {
3206 state->h_hdr->index_max = host->index;
3209 h_hostToDiskEntry_r(host, &hdsk);
3210 if (host->interface) {
3211 if_len = sizeof(struct Interface) +
3212 ((host->interface->numberOfInterfaces-1) * sizeof(struct AddrPort));
3213 ifp = (struct Interface *) malloc(if_len);
3214 osi_Assert(ifp != NULL);
3215 memcpy(ifp, host->interface, if_len);
3216 hdr.interfaces = host->interface->numberOfInterfaces;
3217 iov[iovcnt].iov_base = (char *) ifp;
3218 iov[iovcnt].iov_len = if_len;
3221 if (host->hcps.prlist_val) {
3222 hdr.hcps = host->hcps.prlist_len;
3223 hcps_len = hdr.hcps * sizeof(afs_int32);
3224 hcps = (afs_int32 *) malloc(hcps_len);
3225 osi_Assert(hcps != NULL);
3226 memcpy(hcps, host->hcps.prlist_val, hcps_len);
3227 iov[iovcnt].iov_base = (char *) hcps;
3228 iov[iovcnt].iov_len = hcps_len;
3232 if (hdsk.index > state->h_hdr->index_max)
3233 state->h_hdr->index_max = hdsk.index;
3235 hdr.len = sizeof(struct host_state_entry_header) +
3236 sizeof(struct hostDiskEntry) + if_len + hcps_len;
3237 hdr.magic = HOST_STATE_ENTRY_MAGIC;
3239 iov[0].iov_base = (char *) &hdr;
3240 iov[0].iov_len = sizeof(hdr);
3241 iov[1].iov_base = (char *) &hdsk;
3242 iov[1].iov_len = sizeof(struct hostDiskEntry);
3244 if (fs_stateWriteV(state, iov, iovcnt)) {
3245 ViceLog(0, ("h_stateSaveHost: failed to save host %d", host->index));
3249 fs_stateIncEOF(state, hdr.len);
3251 state->h_hdr->records++;
3258 return H_ENUMERATE_BAIL(0);
3263 /* restores a host from disk */
3265 h_stateRestoreHost(struct fs_dump_state * state)
3267 int ifp_len=0, hcps_len=0, bail=0;
3268 struct host_state_entry_header hdr;
3269 struct hostDiskEntry hdsk;
3270 struct host *host = NULL;
3271 struct Interface *ifp = NULL;
3272 afs_int32 * hcps = NULL;
3273 struct iovec iov[3];
3276 if (fs_stateRead(state, &hdr, sizeof(hdr))) {
3277 ViceLog(0, ("h_stateRestoreHost: failed to read host entry header from dump file '%s'\n",
3283 if (hdr.magic != HOST_STATE_ENTRY_MAGIC) {
3284 ViceLog(0, ("h_stateRestoreHost: fileserver state dump file '%s' is corrupt.\n",
3290 iov[0].iov_base = (char *) &hdsk;
3291 iov[0].iov_len = sizeof(struct hostDiskEntry);
3293 if (hdr.interfaces) {
3294 ifp_len = sizeof(struct Interface) +
3295 ((hdr.interfaces-1) * sizeof(struct AddrPort));
3296 ifp = (struct Interface *) malloc(ifp_len);
3297 osi_Assert(ifp != NULL);
3298 iov[iovcnt].iov_base = (char *) ifp;
3299 iov[iovcnt].iov_len = ifp_len;
3303 hcps_len = hdr.hcps * sizeof(afs_int32);
3304 hcps = (afs_int32 *) malloc(hcps_len);
3305 osi_Assert(hcps != NULL);
3306 iov[iovcnt].iov_base = (char *) hcps;
3307 iov[iovcnt].iov_len = hcps_len;
3311 if ((ifp_len + hcps_len + sizeof(hdsk) + sizeof(hdr)) != hdr.len) {
3312 ViceLog(0, ("h_stateRestoreHost: host entry header length fields are inconsistent\n"));
3317 if (fs_stateReadV(state, iov, iovcnt)) {
3318 ViceLog(0, ("h_stateRestoreHost: failed to read host entry\n"));
3323 if (!hdr.hcps && hdsk.hcps_valid) {
3324 /* valid, zero-length host cps ; does this ever happen? */
3325 hcps = (afs_int32 *) malloc(sizeof(afs_int32));
3326 osi_Assert(hcps != NULL);
3330 osi_Assert(host != NULL);
3333 host->interface = ifp;
3336 host->hcps.prlist_val = hcps;
3337 host->hcps.prlist_len = hdr.hcps;
3340 h_diskEntryToHost_r(&hdsk, host);
3341 h_SetupCallbackConn_r(host);
3343 h_AddHostToAddrHashTable_r(host->host, host->port, host);
3346 for (i = ifp->numberOfInterfaces-1; i >= 0; i--) {
3347 if (ifp->interface[i].valid &&
3348 !(ifp->interface[i].addr == host->host &&
3349 ifp->interface[i].port == host->port)) {
3350 h_AddHostToAddrHashTable_r(ifp->interface[i].addr,
3351 ifp->interface[i].port,
3355 h_AddHostToUuidHashTable_r(&ifp->uuid, host);
3357 h_InsertList_r(host);
3359 /* setup host id map entry */
3360 state->h_map.entries[hdsk.index].old_idx = hdsk.index;
3361 state->h_map.entries[hdsk.index].new_idx = host->index;
3373 /* serialize a host structure to disk */
3375 h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out)
3377 out->host = in->host;
3378 out->port = in->port;
3379 out->hostFlags = in->hostFlags;
3380 out->Console = in->Console;
3381 out->hcpsfailed = in->hcpsfailed;
3382 out->LastCall = in->LastCall;
3383 out->ActiveCall = in->ActiveCall;
3384 out->cpsCall = in->cpsCall;
3385 out->cblist = in->cblist;
3386 #ifdef FS_STATS_DETAILED
3387 out->InSameNetwork = in->InSameNetwork;
3390 /* special fields we save, but are not memcpy'd back on restore */
3391 out->index = in->index;
3392 out->hcps_len = in->hcps.prlist_len;
3393 out->hcps_valid = (in->hcps.prlist_val == NULL) ? 0 : 1;
3396 /* restore a host structure from disk */
3398 h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out)
3400 out->host = in->host;
3401 out->port = in->port;
3402 out->hostFlags = in->hostFlags;
3403 out->Console = in->Console;
3404 out->hcpsfailed = in->hcpsfailed;
3405 out->LastCall = in->LastCall;
3406 out->ActiveCall = in->ActiveCall;
3407 out->cpsCall = in->cpsCall;
3408 out->cblist = in->cblist;
3409 #ifdef FS_STATS_DETAILED
3410 out->InSameNetwork = in->InSameNetwork;
3414 /* index translation routines */
3416 h_OldToNew(struct fs_dump_state * state, afs_uint32 old, afs_uint32 * new)
3420 /* hosts use a zero-based index, so old==0 is valid */
3422 if (old >= state->h_map.len) {
3423 ViceLog(0, ("h_OldToNew: index %d is out of range\n", old));
3425 } else if (state->h_map.entries[old].old_idx != old) { /* sanity check */
3426 ViceLog(0, ("h_OldToNew: index %d points to an invalid host record\n", old));
3429 *new = state->h_map.entries[old].new_idx;
3434 #endif /* AFS_DEMAND_ATTACH_FS */
3438 * This counts the number of workstations, the number of active workstations,
3439 * and the number of workstations declared "down" (i.e. not heard from
3440 * recently). An active workstation has received a call since the cutoff
3441 * time argument passed.
3444 h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
3447 int num = 0, active = 0, del = 0;
3451 for (count = 0, host = hostList; host && count < hostCount; host = host->next, count++) {
3452 if (!(host->hostFlags & HOSTDELETED)) {
3454 if (host->ActiveCall > cutofftime)
3456 if (host->hostFlags & VENUSDOWN)
3460 if (count != hostCount) {
3461 ViceLog(0, ("h_GetWorkStats found %d of %d hosts\n", count, hostCount));
3462 } else if (host != NULL) {
3463 ViceLog(0, ("h_GetWorkStats found more than %d hosts\n", hostCount));
3464 ShutDownAndCore(PANIC);
3474 } /*h_GetWorkStats */
3477 h_GetWorkStats64(afs_uint64 *nump, afs_uint64 *activep, afs_uint64 *delp,
3478 afs_int32 cutofftime)
3480 int num, active, del;
3481 h_GetWorkStats(&num, &active, &del, cutofftime);
3490 /*------------------------------------------------------------------------
3491 * PRIVATE h_ClassifyAddress
3494 * Given a target IP address and a candidate IP address (both
3495 * in host byte order), classify the candidate into one of three
3496 * buckets in relation to the target by bumping the counters passed
3500 * a_targetAddr : Target address.
3501 * a_candAddr : Candidate address.
3502 * a_sameNetOrSubnetP : Ptr to counter to bump when the two
3503 * addresses are either in the same network
3504 * or the same subnet.
3505 * a_diffSubnetP : ...when the candidate is in a different
3507 * a_diffNetworkP : ...when the candidate is in a different
3514 * The target and candidate addresses are both in host byte
3515 * order, NOT network byte order, when passed in.
3519 *------------------------------------------------------------------------*/
3522 h_ClassifyAddress(afs_uint32 a_targetAddr, afs_uint32 a_candAddr,
3523 afs_int32 * a_sameNetOrSubnetP, afs_int32 * a_diffSubnetP,
3524 afs_int32 * a_diffNetworkP)
3525 { /*h_ClassifyAddress */
3527 afs_uint32 targetNet;
3528 afs_uint32 targetSubnet;
3530 afs_uint32 candSubnet;
3533 * Put bad values into the subnet info to start with.
3535 targetSubnet = (afs_uint32) 0;
3536 candSubnet = (afs_uint32) 0;
3539 * Pull out the network and subnetwork numbers from the target
3540 * and candidate addresses. We can short-circuit this whole
3541 * affair if the target and candidate addresses are not of the
3544 if (IN_CLASSA(a_targetAddr)) {
3545 if (!(IN_CLASSA(a_candAddr))) {
3546 (*a_diffNetworkP)++;
3549 targetNet = a_targetAddr & IN_CLASSA_NET;
3550 candNet = a_candAddr & IN_CLASSA_NET;
3551 if (IN_SUBNETA(a_targetAddr))
3552 targetSubnet = a_targetAddr & IN_CLASSA_SUBNET;
3553 if (IN_SUBNETA(a_candAddr))
3554 candSubnet = a_candAddr & IN_CLASSA_SUBNET;
3555 } else if (IN_CLASSB(a_targetAddr)) {
3556 if (!(IN_CLASSB(a_candAddr))) {
3557 (*a_diffNetworkP)++;
3560 targetNet = a_targetAddr & IN_CLASSB_NET;
3561 candNet = a_candAddr & IN_CLASSB_NET;
3562 if (IN_SUBNETB(a_targetAddr))
3563 targetSubnet = a_targetAddr & IN_CLASSB_SUBNET;
3564 if (IN_SUBNETB(a_candAddr))
3565 candSubnet = a_candAddr & IN_CLASSB_SUBNET;
3566 } /*Class B target */
3567 else if (IN_CLASSC(a_targetAddr)) {
3568 if (!(IN_CLASSC(a_candAddr))) {
3569 (*a_diffNetworkP)++;
3572 targetNet = a_targetAddr & IN_CLASSC_NET;
3573 candNet = a_candAddr & IN_CLASSC_NET;
3576 * Note that class C addresses can't have subnets,
3577 * so we leave the defaults untouched.
3579 } /*Class C target */
3581 targetNet = a_targetAddr;
3582 candNet = a_candAddr;
3583 } /*Class D address */
3586 * Now, simply compare the extracted net and subnet values for
3587 * the two addresses (which at this point are known to be of the
3590 if (targetNet == candNet) {
3591 if (targetSubnet == candSubnet)
3592 (*a_sameNetOrSubnetP)++;
3596 (*a_diffNetworkP)++;
3598 } /*h_ClassifyAddress */
3601 /*------------------------------------------------------------------------
3602 * EXPORTED h_GetHostNetStats
3605 * Iterate through the host table, and classify each (non-deleted)
3606 * host entry into ``proximity'' categories (same net or subnet,
3607 * different subnet, different network).
3610 * a_numHostsP : Set to total number of (non-deleted) hosts.
3611 * a_sameNetOrSubnetP : Set to # hosts on same net/subnet as server.
3612 * a_diffSubnetP : Set to # hosts on diff subnet as server.
3613 * a_diffNetworkP : Set to # hosts on diff network as server.
3619 * We only count non-deleted hosts. The storage pointed to by our
3620 * parameters is zeroed upon entry.
3624 *------------------------------------------------------------------------*/
3627 h_GetHostNetStats(afs_int32 * a_numHostsP, afs_int32 * a_sameNetOrSubnetP,
3628 afs_int32 * a_diffSubnetP, afs_int32 * a_diffNetworkP)
3629 { /*h_GetHostNetStats */
3631 struct host *hostP; /*Ptr to current host entry */
3632 afs_uint32 currAddr_HBO; /*Curr host addr, host byte order */
3636 * Clear out the storage pointed to by our parameters.
3638 *a_numHostsP = (afs_int32) 0;
3639 *a_sameNetOrSubnetP = (afs_int32) 0;
3640 *a_diffSubnetP = (afs_int32) 0;
3641 *a_diffNetworkP = (afs_int32) 0;
3644 for (count = 0, hostP = hostList; hostP && count < hostCount; hostP = hostP->next, count++) {
3645 if (!(hostP->hostFlags & HOSTDELETED)) {
3647 * Bump the number of undeleted host entries found.
3648 * In classifying the current entry's address, make
3649 * sure to first convert to host byte order.
3652 currAddr_HBO = (afs_uint32) ntohl(hostP->host);
3653 h_ClassifyAddress(FS_HostAddr_HBO, currAddr_HBO,
3654 a_sameNetOrSubnetP, a_diffSubnetP,
3656 } /*Only look at non-deleted hosts */
3657 } /*For each host record hashed to this index */
3658 if (count != hostCount) {
3659 ViceLog(0, ("h_GetHostNetStats found %d of %d hosts\n", count, hostCount));
3660 } else if (hostP != NULL) {
3661 ViceLog(0, ("h_GetHostNetStats found more than %d hosts\n", hostCount));
3662 ShutDownAndCore(PANIC);
3665 } /*h_GetHostNetStats */
3667 static afs_uint32 checktime;
3668 static afs_uint32 clientdeletetime;
3669 static struct AFSFid zerofid;
3673 * XXXX: This routine could use Multi-Rx to avoid serializing the timeouts.
3674 * Since it can serialize them, and pile up, it should be a separate LWP
3675 * from other events.
3679 CheckHost(struct host *host, int flags, void *rock)
3681 struct client *client;
3682 struct rx_connection *cb_conn = NULL;
3685 #ifdef AFS_DEMAND_ATTACH_FS
3686 /* kill the checkhost lwp ASAP during shutdown */
3688 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3690 return H_ENUMERATE_BAIL(flags);
3695 /* Host is held by h_Enumerate */
3697 for (client = host->FirstClient; client; client = client->next) {
3698 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3699 client->deleted = 1;
3700 host->hostFlags |= CLIENTDELETED;
3703 if (host->LastCall < checktime) {
3705 if (!(host->hostFlags & HOSTDELETED)) {
3706 host->hostFlags |= HWHO_INPROGRESS;
3707 cb_conn = host->callback_rxcon;
3708 rx_GetConnection(cb_conn);
3709 if (host->LastCall < clientdeletetime) {
3710 host->hostFlags |= HOSTDELETED;
3711 if (!(host->hostFlags & VENUSDOWN)) {
3712 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3713 if (host->interface) {
3716 RXAFSCB_InitCallBackState3(cb_conn,
3722 RXAFSCB_InitCallBackState(cb_conn);
3725 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3728 (void)afs_inet_ntoa_r(host->host, hoststr);
3730 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3731 hoststr, ntohs(host->port)));
3732 host->hostFlags |= VENUSDOWN;
3734 /* Note: it's safe to delete hosts even if they have call
3735 * back state, because break delayed callbacks (called when a
3736 * message is received from the workstation) will always send a
3737 * break all call backs to the workstation if there is no
3742 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3744 (void)afs_inet_ntoa_r(host->host, hoststr);
3745 if (host->interface) {
3746 afsUUID uuid = host->interface->uuid;
3748 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3751 if (MultiProbeAlternateAddress_r(host)) {
3752 ViceLog(0,("CheckHost: Probing all interfaces of host %s:%d failed, code %d\n",
3753 hoststr, ntohs(host->port), code));
3754 host->hostFlags |= VENUSDOWN;
3759 code = RXAFSCB_Probe(cb_conn);
3763 ("CheckHost: Probe failed for host %s:%d, code %d\n",
3764 hoststr, ntohs(host->port), code));
3765 host->hostFlags |= VENUSDOWN;
3771 rx_PutConnection(cb_conn);
3774 host->hostFlags &= ~HWHO_INPROGRESS;
3785 CheckHost_r(struct host *host, void *dummy)
3787 struct client *client;
3788 struct rx_connection *cb_conn = NULL;
3791 #ifdef AFS_DEMAND_ATTACH_FS
3792 /* kill the checkhost lwp ASAP during shutdown */
3794 if (fs_state.mode == FS_MODE_SHUTDOWN) {
3796 return H_ENUMERATE_BAIL(0);
3801 /* Host is held by h_Enumerate_r */
3802 for (client = host->FirstClient; client; client = client->next) {
3803 if (client->refCount == 0 && client->LastCall < clientdeletetime) {
3804 client->deleted = 1;
3805 host->hostFlags |= CLIENTDELETED;
3808 if (host->LastCall < checktime) {
3810 if (!(host->hostFlags & HOSTDELETED)) {
3811 host->hostFlags |= HWHO_INPROGRESS;
3812 cb_conn = host->callback_rxcon;
3813 rx_GetConnection(cb_conn);
3814 if (host->LastCall < clientdeletetime) {
3815 host->hostFlags |= HOSTDELETED;
3816 if (!(host->hostFlags & VENUSDOWN)) {
3817 host->hostFlags &= ~ALTADDR; /* alternate address invalid */
3818 if (host->interface) {
3821 RXAFSCB_InitCallBackState3(cb_conn,
3827 RXAFSCB_InitCallBackState(cb_conn);
3830 host->hostFlags |= ALTADDR; /* alternate addresses valid */
3833 (void)afs_inet_ntoa_r(host->host, hoststr);
3835 ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
3836 hoststr, ntohs(host->port)));
3837 host->hostFlags |= VENUSDOWN;
3839 /* Note: it's safe to delete hosts even if they have call
3840 * back state, because break delayed callbacks (called when a
3841 * message is received from the workstation) will always send a
3842 * break all call backs to the workstation if there is no
3847 if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
3849 (void)afs_inet_ntoa_r(host->host, hoststr);
3850 if (host->interface) {
3851 afsUUID uuid = host->interface->uuid;
3853 code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
3856 if (MultiProbeAlternateAddress_r(host)) {
3857 ViceLog(0,("CheckHost_r: Probing all interfaces of host %s:%d failed, code %d\n",
3858 hoststr, ntohs(host->port), code));
3859 host->hostFlags |= VENUSDOWN;
3864 code = RXAFSCB_Probe(cb_conn);
3868 ("CheckHost_r: Probe failed for host %s:%d, code %d\n",
3869 hoststr, ntohs(host->port), code));
3870 host->hostFlags |= VENUSDOWN;
3876 rx_PutConnection(cb_conn);
3879 host->hostFlags &= ~HWHO_INPROGRESS;
3889 * Set VenusDown for any hosts that have not had a call in 15 minutes and
3890 * don't respond to a probe. Note that VenusDown can only be cleared if
3891 * a message is received from the host (see ServerLWP in file.c).
3892 * Delete hosts that have not had any calls in 1 hour, clients that
3893 * have not had any calls in 15 minutes.
3895 * This routine is called roughly every 5 minutes.
3900 afs_uint32 now = FT_ApproxTime();
3902 memset(&zerofid, 0, sizeof(zerofid));
3904 * Send a probe to the workstation if it hasn't been heard from in
3907 checktime = now - 15 * 60;
3908 clientdeletetime = now - 120 * 60; /* 2 hours ago */
3911 h_Enumerate_r(CheckHost_r, hostList, NULL);
3916 * This is called with host locked and held. At this point, the
3917 * hostAddrHashTable has an entry for the primary addr/port inserted
3918 * by h_Alloc_r(). No other interfaces should be considered valid.
3920 * The addresses in the interfaceAddr list are in host byte order.
3923 initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf)
3930 struct Interface *interface;
3933 afs_uint16 port7001 = htons(7001);
3938 number = interf->numberOfInterfaces;
3939 myAddr = host->host; /* current interface address */
3940 myPort = host->port; /* current port */
3943 ("initInterfaceAddr : host %s:%d numAddr %d\n",
3944 afs_inet_ntoa_r(myAddr, hoststr), ntohs(myPort), number));
3946 /* validation checks */
3947 if (number < 0 || number > AFS_MAX_INTERFACE_ADDR) {
3949 ("Invalid number of alternate addresses is %d\n", number));
3954 * The client's notion of its own IP addresses is not reliable.
3956 * 1. The client list might contain private address ranges which
3957 * are likely to be re-used by many clients allocated addresses
3960 * 2. The client list will not include any public addresses that
3961 * are hidden by a NAT.
3963 * 3. Private address ranges that are exposed to the server will
3964 * be obtained from the rx connections that use them.
3966 * 4. Lists provided by the client are not necessarily truthful.
3967 * Many existing clients (UNIX) do not refresh the IP address
3968 * list as the actual assigned addresses change. The end result
3969 * is that they report the initial address list for the lifetime
3970 * of the process. In other words, a client can report addresses
3971 * that they are in fact not using. Adding these addresses to
3972 * the host interface list without verification is not only
3973 * pointless, it is downright dangerous.
3975 * We therefore do not add alternate addresses to the addr hash table.
3976 * We only use them for multi-rx callback breaks.
3980 * Convert IP addresses to network byte order, and remove
3981 * duplicate IP addresses from the interface list, and
3982 * determine whether or not the incoming addr/port is
3983 * listed. Note that if the address matches it is not
3984 * truly a match because the port number for the entries
3985 * in the interface list are port 7001 and the port number
3986 * for this connection might not be 7001.
3988 for (i = 0, count = 0, found = 0; i < number; i++) {
3989 interf->addr_in[i] = htonl(interf->addr_in[i]);
3990 for (j = 0; j < count; j++) {
3991 if (interf->addr_in[j] == interf->addr_in[i])
3995 interf->addr_in[count] = interf->addr_in[i];
3996 if (interf->addr_in[count] == myAddr &&
4004 * Allocate and initialize an interface structure for this host.
4007 interface = (struct Interface *)
4008 malloc(sizeof(struct Interface) +
4009 (sizeof(struct AddrPort) * (count - 1)));
4011 ViceLogThenPanic(0, ("Failed malloc in initInterfaceAddr_r 1\n"));
4013 interface->numberOfInterfaces = count;
4015 interface = (struct Interface *)
4016 malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * count));
4018 ViceLogThenPanic(0, ("Failed malloc in initInterfaceAddr_r 2\n"));
4020 interface->numberOfInterfaces = count + 1;
4021 interface->interface[count].addr = myAddr;
4022 interface->interface[count].port = myPort;
4023 interface->interface[count].valid = 1;
4026 for (i = 0; i < count; i++) {
4028 interface->interface[i].addr = interf->addr_in[i];
4029 /* We store the port as 7001 because the addresses reported by
4030 * TellMeAboutYourself and WhoAreYou RPCs are only valid if they
4031 * are coming from fully connected hosts (no NAT/PATs)
4033 interface->interface[i].port = port7001;
4034 interface->interface[i].valid =
4035 (interf->addr_in[i] == myAddr && port7001 == myPort) ? 1 : 0;
4038 interface->uuid = interf->uuid;
4040 osi_Assert(!host->interface);
4041 host->interface = interface;
4043 if (LogLevel >= 125) {
4044 afsUUID_to_string(&interface->uuid, uuidstr, 127);
4046 ViceLog(125, ("--- uuid %s\n", uuidstr));
4047 for (i = 0; i < host->interface->numberOfInterfaces; i++) {
4048 ViceLog(125, ("--- alt address %s:%d\n",
4049 afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
4050 ntohs(host->interface->interface[i].port)));
4057 /* deleted a HashChain structure for this address and host */
4058 /* returns 1 on success */
4060 h_DeleteHostFromAddrHashTable_r(afs_uint32 addr, afs_uint16 port,
4064 struct h_AddrHashChain **hp, *th;
4066 if (addr == 0 && port == 0)
4069 for (hp = &hostAddrHashTable[h_HashIndex(addr)]; (th = *hp);
4071 osi_Assert(th->hostPtr);
4072 if (th->hostPtr == host && th->addr == addr && th->port == port) {
4073 ViceLog(125, ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d)\n",
4074 host, afs_inet_ntoa_r(host->host, hoststr),
4075 ntohs(host->port)));
4082 ("h_DeleteHostFromAddrHashTable_r: host %" AFS_PTR_FMT " (%s:%d) not found\n",
4083 host, afs_inet_ntoa_r(host->host, hoststr),
4084 ntohs(host->port)));
4090 ** prints out all alternate interface address for the host. The 'level'
4091 ** parameter indicates what level of debugging sets this output
4094 printInterfaceAddr(struct host *host, int level)
4099 if (host->interface) {
4100 /* check alternate addresses */
4101 number = host->interface->numberOfInterfaces;
4103 ViceLog(level, ("no-addresses "));
4105 for (i = 0; i < number; i++)
4106 ViceLog(level, ("%s:%d ", afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
4107 ntohs(host->interface->interface[i].port)));
4110 ViceLog(level, ("\n"));