* This software has been released under the terms of the IBM Public
* License. For details, see the LICENSE file in the top-level source
* directory or online at http://www.openafs.org/dl/license10.html
+ *
+ * Portions Copyright (c) 2006 Sine Nomine Associates
*/
#include <afsconfig.h>
#include <stdio.h>
#include <errno.h>
+#include <string.h>
#ifdef AFS_NT40_ENV
#include <fcntl.h>
#include <winsock2.h>
#include <netinet/in.h>
#endif
-#ifdef HAVE_STRING_H
-#include <string.h>
-#else
-#ifdef HAVE_STRINGS_H
-#include <strings.h>
-#endif
-#endif
-
#include <afs/stds.h>
#include <rx/xdr.h>
#include <afs/assert.h>
#include <afs/prs_fs.h>
#include <afs/auth.h>
#include <afs/afsutil.h>
+#include <afs/com_err.h>
#include <rx/rx.h>
#include <afs/cellconfig.h>
#include <stdlib.h>
#include "viced_prototypes.h"
#include "viced.h"
#include "host.h"
-
+#include "callback.h"
+#ifdef AFS_DEMAND_ATTACH_FS
+#include "../util/afsutil_prototypes.h"
+#include "../tviced/serialize_state.h"
+#endif /* AFS_DEMAND_ATTACH_FS */
#ifdef AFS_PTHREAD_ENV
pthread_mutex_t host_glock_mutex;
extern int lwps; /* the max number of server threads */
extern afsUUID FS_HostUUID;
+afsUUID nulluuid;
int CEs = 0; /* active clients */
int CEBlocks = 0; /* number of blocks of CEs */
struct client *CEFree = 0; /* first free client */
int rxcon_ident_key;
int rxcon_client_key;
+static struct rx_securityClass *sc = NULL;
+
+static void h_SetupCallbackConn_r(struct host * host);
+
#define CESPERBLOCK 73
struct CEBlock { /* block of CESPERBLOCK file entries */
struct client entry[CESPERBLOCK];
};
static void h_TossStuff_r(register struct host *host);
-static int hashDelete_r(afs_uint32 addr, afs_uint16 port, struct host *host);
/*
* Make sure the subnet macros have been defined.
static void
FreeCE(register struct client *entry)
{
+ entry->VenusEpoch = 0;
+ entry->sid = 0;
entry->next = CEFree;
CEFree = entry;
CEs--;
* to map IP addresses onto host pointers, and another
* to map host UUIDs onto host pointers.
*/
-static struct h_hashChain *hostHashTable[h_HASHENTRIES];
-static struct h_hashChain *hostUuidHashTable[h_HASHENTRIES];
+static struct h_AddrHashChain *hostAddrHashTable[h_HASHENTRIES];
+static struct h_UuidHashChain *hostUuidHashTable[h_HASHENTRIES];
#define h_HashIndex(hostip) ((hostip) & (h_HASHENTRIES-1))
#define h_UuidHashIndex(uuidp) (((int)(afs_uuid_hash(uuidp))) & (h_HASHENTRIES-1))
{
register struct host *entry;
- if (HTFree == 0)
+ if (HTFree == NULL)
GetHTBlock();
- assert(HTFree != 0);
+ assert(HTFree != NULL);
entry = HTFree;
HTFree = entry->next;
HTs++;
} /*FreeHT */
+afs_int32
+hpr_Initialize(struct ubik_client **uclient)
+{
+ afs_int32 code;
+ struct rx_connection *serverconns[MAXSERVERS];
+ struct rx_securityClass *sc[3];
+ struct afsconf_dir *tdir;
+ char tconfDir[100] = "";
+ char tcell[64] = "";
+ struct ktc_token ttoken;
+ afs_int32 scIndex;
+ struct afsconf_cell info;
+ afs_int32 i;
+ char cellstr[64];
+
+ tdir = afsconf_Open(AFSDIR_SERVER_ETC_DIRPATH);
+ if (!tdir) {
+ ViceLog(0, ("hpr_Initialize: Could not open configuration directory: %s", AFSDIR_SERVER_ETC_DIRPATH));
+ return -1;
+ }
+
+ code = afsconf_GetLocalCell(tdir, cellstr, sizeof(cellstr));
+ if (code) {
+ ViceLog(0, ("hpr_Initialize: Could not get local cell. [%d]", code));
+ afsconf_Close(tdir);
+ return code;
+ }
+
+ code = afsconf_GetCellInfo(tdir, cellstr, "afsprot", &info);
+ if (code) {
+ ViceLog(0, ("hpr_Initialize: Could not locate cell %s in %s/%s", cellstr, confDir, AFSDIR_CELLSERVDB_FILE));
+ afsconf_Close(tdir);
+ return code;
+ }
+
+ code = rx_Init(0);
+ if (code) {
+ ViceLog(0, ("hpr_Initialize: Could not initialize rx."));
+ afsconf_Close(tdir);
+ return code;
+ }
+
+ scIndex = 2;
+ sc[0] = 0;
+ sc[1] = 0;
+ sc[2] = 0;
+ /* Most callers use secLevel==1, however, the fileserver uses secLevel==2
+ * to force use of the KeyFile. secLevel == 0 implies -noauth was
+ * specified. */
+ if ((afsconf_GetLatestKey(tdir, 0, 0) == 0)) {
+ code = afsconf_ClientAuthSecure(tdir, &sc[2], &scIndex);
+ if (code)
+ ViceLog(0, ("hpr_Initialize: clientauthsecure returns %d %s (so trying noauth)", code, afs_error_message(code)));
+ if (code)
+ scIndex = 0; /* use noauth */
+ if (scIndex != 2)
+ /* if there was a problem, an unauthenticated conn is returned */
+ sc[scIndex] = sc[2];
+ } else {
+ struct ktc_principal sname;
+ strcpy(sname.cell, info.name);
+ sname.instance[0] = 0;
+ strcpy(sname.name, "afs");
+ code = ktc_GetToken(&sname, &ttoken, sizeof(ttoken), NULL);
+ if (code)
+ scIndex = 0;
+ else {
+ if (ttoken.kvno >= 0 && ttoken.kvno <= 256)
+ /* this is a kerberos ticket, set scIndex accordingly */
+ scIndex = 2;
+ else {
+ ViceLog(0, ("hpr_Initialize: funny kvno (%d) in ticket, proceeding", ttoken.kvno));
+ scIndex = 2;
+ }
+ sc[2] =
+ rxkad_NewClientSecurityObject(rxkad_clear, &ttoken.sessionKey,
+ ttoken.kvno, ttoken.ticketLen,
+ ttoken.ticket);
+ }
+ }
+ if ((scIndex == 0) && (sc[0] == 0))
+ sc[0] = rxnull_NewClientSecurityObject();
+ if ((scIndex == 0))
+ ViceLog(0, ("hpr_Initialize: Could not get afs tokens, running unauthenticated. [%d]", code));
+
+ memset(serverconns, 0, sizeof(serverconns)); /* terminate list!!! */
+ for (i = 0; i < info.numServers; i++) {
+ serverconns[i] =
+ rx_NewConnection(info.hostAddr[i].sin_addr.s_addr,
+ info.hostAddr[i].sin_port, PRSRV, sc[scIndex],
+ scIndex);
+ }
+
+ code = ubik_ClientInit(serverconns, uclient);
+ if (code) {
+ ViceLog(0, ("hpr_Initialize: ubik client init failed. [%d]", code));
+ }
+ afsconf_Close(tdir);
+ code = rxs_Release(sc[scIndex]);
+ return code;
+}
+
+int
+hpr_End(struct ubik_client *uclient)
+{
+ int code = 0;
+
+ if (uclient) {
+ code = ubik_ClientDestroy(uclient);
+ }
+ return code;
+}
+
+int
+hpr_GetHostCPS(afs_int32 host, prlist *CPS)
+{
+#ifdef AFS_PTHREAD_ENV
+ register afs_int32 code;
+ afs_int32 over;
+ struct ubik_client *uclient =
+ (struct ubik_client *)pthread_getspecific(viced_uclient_key);
+
+ if (!uclient) {
+ code = hpr_Initialize(&uclient);
+ if (!code)
+ assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
+ else
+ return code;
+ }
+
+ over = 0;
+ code = ubik_PR_GetHostCPS(uclient, 0, host, CPS, &over);
+ if (code != PRSUCCESS)
+ return code;
+ if (over) {
+ /* do something about this, probably make a new call */
+ /* don't forget there's a hard limit in the interface */
+ fprintf(stderr,
+ "membership list for host id %d exceeds display limit\n",
+ host);
+ }
+ return 0;
+#else
+ return pr_GetHostCPS(host, CPS);
+#endif
+}
+
+int
+hpr_NameToId(namelist *names, idlist *ids)
+{
+#ifdef AFS_PTHREAD_ENV
+ register afs_int32 code;
+ register afs_int32 i;
+ struct ubik_client *uclient =
+ (struct ubik_client *)pthread_getspecific(viced_uclient_key);
+
+ if (!uclient) {
+ code = hpr_Initialize(&uclient);
+ if (!code)
+ assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
+ else
+ return code;
+ }
+
+ for (i = 0; i < names->namelist_len; i++)
+ stolower(names->namelist_val[i]);
+ code = ubik_PR_NameToID(uclient, 0, names, ids);
+ return code;
+#else
+ return pr_NameToId(names, ids);
+#endif
+}
+
+int
+hpr_IdToName(idlist *ids, namelist *names)
+{
+#ifdef AFS_PTHREAD_ENV
+ register afs_int32 code;
+ struct ubik_client *uclient =
+ (struct ubik_client *)pthread_getspecific(viced_uclient_key);
+
+ if (!uclient) {
+ code = hpr_Initialize(&uclient);
+ if (!code)
+ assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
+ else
+ return code;
+ }
+
+ code = ubik_PR_IDToName(uclient, 0, ids, names);
+ return code;
+#else
+ return pr_IdToName(ids, names);
+#endif
+}
+
+int
+hpr_GetCPS(afs_int32 id, prlist *CPS)
+{
+#ifdef AFS_PTHREAD_ENV
+ register afs_int32 code;
+ afs_int32 over;
+ struct ubik_client *uclient =
+ (struct ubik_client *)pthread_getspecific(viced_uclient_key);
+
+ if (!uclient) {
+ code = hpr_Initialize(&uclient);
+ if (!code)
+ assert(pthread_setspecific(viced_uclient_key, (void *)uclient) == 0);
+ else
+ return code;
+ }
+
+ over = 0;
+ code = ubik_PR_GetCPS(uclient, 0, id, CPS, &over);
+ if (code != PRSUCCESS)
+ return code;
+ if (over) {
+ /* do something about this, probably make a new call */
+ /* don't forget there's a hard limit in the interface */
+ fprintf(stderr, "membership list for id %d exceeds display limit\n",
+ id);
+ }
+ return 0;
+#else
+ return pr_GetCPS(id, CPS);
+#endif
+}
static short consolePort = 0;
free(host->hcps.prlist_val); /* this is for hostaclRefresh */
host->hcps.prlist_val = NULL;
host->hcps.prlist_len = 0;
- slept ? (host->cpsCall = FT_ApproxTime()) : (host->cpsCall = now);
+ host->cpsCall = slept ? (FT_ApproxTime()) : (now);
H_UNLOCK;
- code = pr_GetHostCPS(htonl(host->host), &host->hcps);
+ code = hpr_GetHostCPS(ntohl(host->host), &host->hcps);
H_LOCK;
if (code) {
+ char hoststr[16];
/*
* Although ubik_Call (called by pr_GetHostCPS) traverses thru all protection servers
* and reevaluates things if no sync server or quorum is found we could still end up
*/
host->hcpsfailed = 1;
ViceLog(0,
- ("Warning: GetHostCPS failed (%d) for %x; will retry\n",
- code, host->host));
+ ("Warning: GetHostCPS failed (%d) for %x (%s:%d); will retry\n",
+ code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
} else {
host->hcpsfailed = 0;
ViceLog(1,
- ("gethost: GetHostCPS failed (%d) for %x; ignored\n",
- code, host->host));
+ ("gethost: GetHostCPS failed (%d) for %x (%s:%d); ignored\n",
+ code, host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
}
if (host->hcps.prlist_val)
free(host->hcps.prlist_val);
/* args in net byte order */
void
-h_flushhostcps(register afs_uint32 hostaddr, register afs_uint32 hport)
+h_flushhostcps(register afs_uint32 hostaddr, register afs_uint16 hport)
{
- register struct host *host;
+ struct host *host;
int held = 0;
H_LOCK;
- host = h_Lookup_r(hostaddr, hport, &held);
+ h_Lookup_r(hostaddr, hport, &held, &host);
if (host) {
host->hcpsfailed = 1;
if (!held)
h_Alloc_r(register struct rx_connection *r_con)
{
struct servent *serverentry;
- int index = h_HashIndex(rxr_HostOf(r_con));
struct host *host;
- static struct rx_securityClass *sc = 0;
afs_int32 now;
- struct h_hashChain *h_hashChain;
#if FS_STATS_DETAILED
afs_uint32 newHostAddr_HBO; /*New host IP addr, in host byte order */
#endif /* FS_STATS_DETAILED */
host = GetHT();
- h_hashChain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
- if (!h_hashChain) {
- ViceLog(0, ("Failed malloc in h_Alloc_r\n"));
- assert(0);
- }
- h_hashChain->hostPtr = host;
- h_hashChain->addr = rxr_HostOf(r_con);
- h_hashChain->next = hostHashTable[index];
- hostHashTable[index] = h_hashChain;
-
host->host = rxr_HostOf(r_con);
host->port = rxr_PortOf(r_con);
+
+ h_AddHostToAddrHashTable_r(host->host, host->port, host);
+
if (consolePort == 0) { /* find the portal number for console */
#if defined(AFS_OSF_ENV)
serverentry = getservbyname("ropcons", "");
host->Console = 1;
/* Make a callback channel even for the console, on the off chance that it
* makes a request that causes a break call back. It shouldn't. */
- {
- if (!sc)
- sc = rxnull_NewClientSecurityObject();
- host->callback_rxcon =
- rx_NewConnection(host->host, host->port, 1, sc, 0);
- rx_SetConnDeadTime(host->callback_rxcon, 50);
- rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
- }
+ h_SetupCallbackConn_r(host);
now = host->LastCall = host->cpsCall = host->ActiveCall = FT_ApproxTime();
host->hostFlags = 0;
host->hcps.prlist_val = NULL;
host->hcps.prlist_len = 0;
- host->interface = 0;
+ host->interface = NULL;
#ifdef undef
host->hcpsfailed = 0; /* save cycles */
h_gethostcps(host); /* do this under host hold/lock */
#endif
- host->FirstClient = 0;
+ host->FirstClient = NULL;
h_Hold_r(host);
h_Lock_r(host);
h_InsertList_r(host); /* update global host List */
} /*h_Alloc_r */
+
+/* Make a callback channel even for the console, on the off chance that it
+ * makes a request that causes a break call back. It shouldn't. */
+static void
+h_SetupCallbackConn_r(struct host * host)
+{
+ if (!sc)
+ sc = rxnull_NewClientSecurityObject();
+ host->callback_rxcon =
+ rx_NewConnection(host->host, host->port, 1, sc, 0);
+ rx_SetConnDeadTime(host->callback_rxcon, 50);
+ rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
+}
+
/* Lookup a host given an IP address and UDP port number. */
/* hostaddr and hport are in network order */
/* Note: host should be released by caller if 0 == *heldp and non-null */
/* hostaddr and hport are in network order */
-struct host *
-h_Lookup_r(afs_uint32 haddr, afs_uint32 hport, int *heldp)
+int
+h_Lookup_r(afs_uint32 haddr, afs_uint16 hport, int *heldp, struct host **hostp)
{
afs_int32 now;
- struct host *host = 0;
- struct h_hashChain *chain;
+ struct host *host = NULL;
+ struct h_AddrHashChain *chain;
int index = h_HashIndex(haddr);
extern int hostaclRefresh;
restart:
- for (chain = hostHashTable[index]; chain; chain = chain->next) {
+ for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
host = chain->hostPtr;
assert(host);
if (!(host->hostFlags & HOSTDELETED) && chain->addr == haddr
&& chain->port == hport) {
+ if ((host->hostFlags & HWHO_INPROGRESS) &&
+ h_threadquota(host->lock.num_waiting)) {
+ *hostp = 0;
+ return VBUSY;
+ }
*heldp = h_Held_r(host);
if (!*heldp)
h_Hold_r(host);
}
host = NULL;
}
- return host;
-
+ *hostp = host;
+ return 0;
} /*h_Lookup */
/* Lookup a host given its UUID. */
h_LookupUuid_r(afsUUID * uuidp)
{
struct host *host = 0;
- struct h_hashChain *chain;
+ struct h_UuidHashChain *chain;
int index = h_UuidHashIndex(uuidp);
for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
if (h_NBLock_r(host) != 0) {
char hoststr[16];
ViceLog(0,
- ("Warning: h_TossStuff_r failed; Host %s:%d was locked.\n",
- afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
+ ("Warning: h_TossStuff_r failed; Host %x (%s:%d) was locked.\n",
+ host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
return;
} else {
h_Unlock_r(host);
/* ASSUMPTION: rxi_FreeConnection() does not yield */
for (cp = &host->FirstClient; (client = *cp);) {
if ((host->hostFlags & HOSTDELETED) || client->deleted) {
+ int code;
+ ObtainWriteLockNoBlock(&client->lock, code);
+ if (code < 0) {
+ char hoststr[16];
+ ViceLog(0,
+ ("Warning: h_TossStuff_r failed: Host %x (%s:%d) client %x was locked.\n",
+ host, afs_inet_ntoa_r(host->host, hoststr),
+ ntohs(host->port), client));
+ return;
+ }
+
if (client->refCount) {
char hoststr[16];
ViceLog(0,
- ("Warning: Host %s:%d client %x refcount %d while deleting, failing.\n",
- afs_inet_ntoa_r(host->host, hoststr),
+ ("Warning: h_TossStuff_r failed: Host %x (%s:%d) client %x refcount %d.\n",
+ host, afs_inet_ntoa_r(host->host, hoststr),
ntohs(host->port), client, client->refCount));
/* This is the same thing we do if the host is locked */
+ ReleaseWriteLock(&client->lock);
return;
}
- /* We can't protect this without dropping the H_LOCK */
client->CPS.prlist_len = 0;
if ((client->ViceId != ANONYMOUSID) && client->CPS.prlist_val)
free(client->CPS.prlist_val);
client->CPS.prlist_val = NULL;
- if (client->tcon) {
- rx_SetSpecific(client->tcon, rxcon_client_key, (void *)0);
- }
CurrentConnections--;
*cp = client->next;
+ ReleaseWriteLock(&client->lock);
FreeCE(client);
} else
cp = &client->next;
host->hostFlags &= ~CLIENTDELETED;
if (host->hostFlags & HOSTDELETED) {
- register struct h_hashChain **hp, *th;
+ register struct h_AddrHashChain **ahp, *ath;
register struct rx_connection *rxconn;
afsUUID *uuidp;
struct AddrPort hostAddrPort;
Console--;
if ((rxconn = host->callback_rxcon)) {
host->callback_rxcon = (struct rx_connection *)0;
- /*
- * If rx_DestroyConnection calls h_FreeConnection we will
- * deadlock on the host_glock_mutex. Work around the problem
- * by unhooking the client from the connection before
- * destroying the connection.
- */
- client = rx_GetSpecific(rxconn, rxcon_client_key);
- if (client && client->tcon == rxconn)
- client->tcon = NULL;
- rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
rx_DestroyConnection(rxconn);
}
if (host->hcps.prlist_val)
/* if alternate addresses do not exist */
if (!(host->interface)) {
- for (hp = &hostHashTable[h_HashIndex(host->host)]; (th = *hp);
- hp = &th->next) {
- assert(th->hostPtr);
- if (th->hostPtr == host) {
- *hp = th->next;
- h_DeleteList_r(host);
- FreeHT(host);
- free(th);
+ for (ahp = &hostAddrHashTable[h_HashIndex(host->host)]; (ath = *ahp);
+ ahp = &ath->next) {
+ assert(ath->hostPtr);
+ if (ath->hostPtr == host) {
+ *ahp = ath->next;
+ free(ath);
break;
}
}
} else {
- /* delete all hash entries for the UUID */
+ register struct h_UuidHashChain **uhp, *uth;
+ /* delete the hash entry for the UUID */
uuidp = &host->interface->uuid;
- for (hp = &hostUuidHashTable[h_UuidHashIndex(uuidp)]; (th = *hp);
- hp = &th->next) {
- assert(th->hostPtr);
- if (th->hostPtr == host) {
- *hp = th->next;
- free(th);
+ for (uhp = &hostUuidHashTable[h_UuidHashIndex(uuidp)]; (uth = *uhp);
+ uhp = &uth->next) {
+ assert(uth->hostPtr);
+ if (uth->hostPtr == host) {
+ *uhp = uth->next;
+ free(uth);
break;
}
}
- /* delete all hash entries for alternate addresses */
- assert(host->interface->numberOfInterfaces > 0);
+ /* delete the hash entry for each alternate addresses */
for (i = 0; i < host->interface->numberOfInterfaces; i++) {
hostAddrPort = host->interface->interface[i];
- for (hp = &hostHashTable[h_HashIndex(hostAddrPort.addr)]; (th = *hp);
- hp = &th->next) {
- assert(th->hostPtr);
- if (th->hostPtr == host) {
- *hp = th->next;
- free(th);
+ if (!hostAddrPort.valid)
+ continue;
+
+ for (ahp = &hostAddrHashTable[h_HashIndex(hostAddrPort.addr)]; (ath = *ahp);
+ ahp = &ath->next) {
+ assert(ath->hostPtr);
+ if (ath->hostPtr == host) {
+ *ahp = ath->next;
+ free(ath);
break;
}
}
}
free(host->interface);
host->interface = NULL;
- h_DeleteList_r(host); /* remove host from global host List */
- FreeHT(host);
} /* if alternate address exists */
- }
-} /*h_TossStuff_r */
-
-
-/* Called by rx when a server connection disappears */
-int
-h_FreeConnection(struct rx_connection *tcon)
-{
- register struct client *client;
- client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
- if (client) {
- H_LOCK;
- if (client->tcon == tcon)
- client->tcon = (struct rx_connection *)0;
- H_UNLOCK;
+ h_DeleteList_r(host); /* remove host from global host List */
+ FreeHT(host);
}
- return 0;
-} /*h_FreeConnection */
+} /*h_TossStuff_r */
/* h_Enumerate: Calls (*proc)(host, held, param) for at least each host in the
if (!(held[count] = h_Held_r(host)))
h_Hold_r(host);
}
- assert(count == hostCount);
+ if (count != hostCount) {
+ ViceLog(0, ("h_Enumerate found %d of %d hosts\n", count, hostCount));
+ }
+ assert(count <= hostCount);
H_UNLOCK;
for (i = 0; i < count; i++) {
held[i] = (*proc) (list[i], held[i], param);
- if (!held[i])
+ if (!H_ENUMERATE_ISSET_HELD(held[i]))
h_Release(list[i]); /* this might free up the host */
+ /* bail out of the enumeration early */
+ if (H_ENUMERATE_ISSET_BAIL(held[i]))
+ break;
}
free((void *)list);
free((void *)held);
if (enumstart && !(held = h_Held_r(enumstart)))
h_Hold_r(enumstart);
for (host = enumstart; host; host = next, held = nheld) {
- held = (*proc) (host, held, param);
next = host->next;
- if (next && !(nheld = h_Held_r(next)))
+ if (next && !(nheld = h_Held_r(next)) && !H_ENUMERATE_ISSET_BAIL(held))
h_Hold_r(next);
- if (!held)
+ held = (*proc) (host, held, param);
+ if (!H_ENUMERATE_ISSET_HELD(held))
h_Release_r(host); /* this might free up the host */
+ if (H_ENUMERATE_ISSET_BAIL(held)) {
+ if (!H_ENUMERATE_ISSET_HELD(nheld))
+ h_Release_r(next); /* this might free up the host */
+ break;
+ }
}
} /*h_Enumerate_r */
/* inserts a new HashChain structure corresponding to this UUID */
void
-hashInsertUuid_r(struct afsUUID *uuid, struct host *host)
+h_AddHostToUuidHashTable_r(struct afsUUID *uuid, struct host *host)
{
int index;
- struct h_hashChain *chain;
+ struct h_UuidHashChain *chain;
/* hash into proper bucket */
index = h_UuidHashIndex(uuid);
+ /* don't add the same entry multiple times */
+ for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
+ if (chain->hostPtr->interface &&
+ afs_uuid_equal(&chain->hostPtr->interface->uuid, uuid))
+ return;
+ }
+
/* insert into beginning of list for this bucket */
- chain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
+ chain = (struct h_UuidHashChain *)malloc(sizeof(struct h_UuidHashChain));
if (!chain) {
- ViceLog(0, ("Failed malloc in hashInsertUuid_r\n"));
+ ViceLog(0, ("Failed malloc in h_AddHostToUuidHashTable_r\n"));
assert(0);
}
assert(chain);
/* inserts a new HashChain structure corresponding to this address */
void
-hashInsert_r(afs_uint32 addr, afs_uint16 port, struct host *host)
+h_AddHostToAddrHashTable_r(afs_uint32 addr, afs_uint16 port, struct host *host)
{
int index;
- struct h_hashChain *chain;
+ struct h_AddrHashChain *chain;
+ int found = 0;
+ char hoststr[16];
/* hash into proper bucket */
index = h_HashIndex(addr);
+ /* don't add the same entry multiple times */
+ for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
+ if (chain->addr == addr && chain->port == port) {
+ if (chain->hostPtr == host)
+ found = 1;
+ else if (!(host->hostFlags & HOSTDELETED))
+ ViceLog(125, ("Addr %s:%d assigned to %x and %x.\n",
+ afs_inet_ntoa_r(addr, hoststr), ntohs(port),
+ host, chain));
+ }
+ }
+
+ if (found)
+ return;
+
/* insert into beginning of list for this bucket */
- chain = (struct h_hashChain *)malloc(sizeof(struct h_hashChain));
+ chain = (struct h_AddrHashChain *)malloc(sizeof(struct h_AddrHashChain));
if (!chain) {
- ViceLog(0, ("Failed malloc in hashInsert_r\n"));
+ ViceLog(0, ("Failed malloc in h_AddHostToAddrHashTable_r\n"));
assert(0);
}
chain->hostPtr = host;
- chain->next = hostHashTable[index];
+ chain->next = hostAddrHashTable[index];
chain->addr = addr;
chain->port = port;
- hostHashTable[index] = chain;
-
+ hostAddrHashTable[index] = chain;
}
/*
* This is called with host locked and held. At this point, the
- * hostHashTable should not be having entries for the alternate
+ * hostAddrHashTable should not have entries for the alternate
* interfaces. This function has to insert these entries in the
- * hostHashTable.
+ * hostAddrHashTable.
*
* All addresses are in network byte order.
*/
assert(host);
assert(host->interface);
- ViceLog(125, ("addInterfaceAddr : host %s:d addr %s:%d\n",
- afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
- afs_inet_ntoa_r(addr, hoststr2), ntohs(port)));
-
/*
* Make sure this address is on the list of known addresses
* for this host.
number = host->interface->numberOfInterfaces;
for (i = 0, found = 0; i < number && !found; i++) {
if (host->interface->interface[i].addr == addr &&
- host->interface->interface[i].port == port)
+ host->interface->interface[i].port == port) {
found = 1;
+ host->interface->interface[i].valid = 1;
+ }
}
+
+ ViceLog(125, ("addInterfaceAddr : host %s:%d addr %s:%d : found:%d\n",
+ afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
+ afs_inet_ntoa_r(addr, hoststr2), ntohs(port), found));
+
if (!found) {
interface = (struct Interface *)
malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * number));
interface->interface[i] = host->interface->interface[i];
interface->interface[number].addr = addr;
interface->interface[number].port = port;
+ interface->interface[number].valid = 1;
free(host->interface);
host->interface = interface;
}
- /*
- * Create a hash table entry for this address
- */
- hashInsert_r(addr, port, host);
-
return 0;
}
/*
* This is called with host locked and held. At this point, the
- * hostHashTable should not be having entries for the alternate
+ * hostAddrHashTable should not be having entries for the alternate
* interfaces. This function has to insert these entries in the
- * hostHashTable.
+ * hostAddrHashTable.
*
* All addresses are in network byte order.
*/
*/
interface = host->interface;
number = host->interface->numberOfInterfaces;
- for (i = 0, found = 0; i < number; i++) {
+ for (i = 0, found = 0; i < number && !found; i++) {
if (interface->interface[i].addr == addr &&
interface->interface[i].port == port) {
found = 1;
- break;
+ interface->interface[i].valid = 0;
}
}
if (found) {
number--;
for (; i < number; i++) {
- interface->interface[i].addr = interface->interface[i+1].addr;
- interface->interface[i].port = interface->interface[i+1].port;
+ interface->interface[i] = interface->interface[i+1];
}
interface->numberOfInterfaces = number;
}
/*
* Remove the hash table entry for this address
*/
- hashDelete_r(addr, port, host);
+ h_DeleteHostFromAddrHashTable_r(addr, port, host);
return 0;
}
+/*
+ * This is called with host locked and held. This function differs
+ * from removeInterfaceAddr_r in that it is called when the address
+ * is being removed from the host regardless of whether or not there
+ * is an interface list for the host. This function will delete the
+ * host if there are no addresses left on it.
+ *
+ * All addresses are in network byte order.
+ */
+int
+removeAddress_r(struct host *host, afs_uint32 addr, afs_uint16 port)
+{
+ int i;
+ char hoststr[16], hoststr2[16];
+
+ if (!host->interface) {
+ if (host->host == addr && host->port == port) {
+ ViceLog(25,
+ ("Removing only address for host %x (%s:%d), deleting host.\n",
+ host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
+ host->hostFlags |= HOSTDELETED;
+ }
+ } else {
+ removeInterfaceAddr_r(host, host->host, host->port);
+ if (host->interface->numberOfInterfaces == 0) {
+ ViceLog(25,
+ ("Removed only address for host %x (%s:%d), no alternate interfaces, deleting host.\n",
+ host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
+ host->hostFlags |= HOSTDELETED;
+ } else {
+ struct rx_connection *rxconn;
+
+ rxconn = host->callback_rxcon;
+ host->callback_rxcon = NULL;
+
+ if (rxconn) {
+ struct client *client;
+ /*
+ * If rx_DestroyConnection calls h_FreeConnection we will
+ * deadlock on the host_glock_mutex. Work around the problem
+ * by unhooking the client from the connection before
+ * destroying the connection.
+ */
+ client = rx_GetSpecific(rxconn, rxcon_client_key);
+ rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
+ rx_DestroyConnection(rxconn);
+ }
+
+ for (i=0; i < host->interface->numberOfInterfaces; i++) {
+ if (host->interface->interface[i].valid) {
+ ViceLog(25,
+ ("Removed address for host %x (%s:%d), new primary interface %s:%d.\n",
+ host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
+ afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr2),
+ ntohs(host->interface->interface[i].port)));
+ host->host = host->interface->interface[i].addr;
+ host->port = host->interface->interface[i].port;
+ h_AddHostToAddrHashTable_r(host->host, host->port, host);
+ break;
+ }
+ }
+
+ if (i == host->interface->numberOfInterfaces) {
+ ViceLog(25,
+ ("Removed only address for host %x (%s:%d), no valid alternate interfaces, deleting host.\n",
+ host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
+ host->hostFlags |= HOSTDELETED;
+ } else {
+ if (!sc)
+ sc = rxnull_NewClientSecurityObject();
+ host->callback_rxcon =
+ rx_NewConnection(host->host, host->port, 1, sc, 0);
+ rx_SetConnDeadTime(host->callback_rxcon, 50);
+ rx_SetConnHardDeadTime(host->callback_rxcon, AFS_HARDDEADTIME);
+ }
+ }
+ }
+
+ return 0;
+}
+int
+h_threadquota(int waiting)
+{
+ if (lwps > 64) {
+ if (waiting > 5)
+ return 1;
+ } else if (lwps > 32) {
+ if (waiting > 4)
+ return 1;
+ } else if (lwps > 16) {
+ if (waiting > 3)
+ return 1;
+ } else {
+ if (waiting > 2)
+ return 1;
+ }
+ return 0;
+}
/* Host is returned held */
struct host *
struct host *host;
struct host *oldHost;
int code;
- int held, oheld;
+ int held;
struct interfaceAddr interf;
int interfValid = 0;
struct Identity *identP = NULL;
- afs_int32 haddr;
- afs_int16 hport;
+ afs_uint32 haddr;
+ afs_uint16 hport;
char hoststr[16], hoststr2[16];
Capabilities caps;
struct rx_connection *cb_conn = NULL;
+ struct rx_connection *cb_in = NULL;
caps.Capabilities_val = NULL;
haddr = rxr_HostOf(tcon);
hport = rxr_PortOf(tcon);
retry:
+ if (cb_in) {
+ rx_DestroyConnection(cb_in);
+ cb_in = NULL;
+ }
if (caps.Capabilities_val)
free(caps.Capabilities_val);
caps.Capabilities_val = NULL;
caps.Capabilities_len = 0;
code = 0;
- host = h_Lookup_r(haddr, hport, &held);
+ if (h_Lookup_r(haddr, hport, &held, &host))
+ return 0;
identP = (struct Identity *)rx_GetSpecific(tcon, rxcon_ident_key);
if (host && !identP && !(host->Console & 1)) {
/* This is a new connection, and we already have a host
* structure for this address. Verify that the identity
* of the caller matches the identity in the host structure.
*/
+ if ((host->hostFlags & HWHO_INPROGRESS) &&
+ h_threadquota(host->lock.num_waiting)) {
+ if (!held)
+ h_Release_r(host);
+ return 0;
+ }
h_Lock_r(host);
if (!(host->hostFlags & ALTADDR)) {
/* Another thread is doing initialization */
if (!held)
h_Release_r(host);
ViceLog(125,
- ("Host %s:%d starting h_Lookup again\n",
- afs_inet_ntoa_r(host->host, hoststr),
+ ("Host %x (%s:%d) starting h_Lookup again\n",
+ host, afs_inet_ntoa_r(host->host, hoststr),
ntohs(host->port)));
goto retry;
}
+ host->hostFlags |= HWHO_INPROGRESS;
host->hostFlags &= ~ALTADDR;
+
+ /* We received a new connection from an IP address/port
+ * that is associated with 'host' but the address/port of
+ * the callback connection does not have to match it.
+ * If there is a match, we can use the existing callback
+ * connection to verify the UUID. If they do not match
+ * we need to use a new callback connection to verify the
+ * UUID of the incoming caller and perhaps use the old
+ * callback connection to verify that the old address/port
+ * is still valid.
+ */
+
cb_conn = host->callback_rxcon;
rx_GetConnection(cb_conn);
H_UNLOCK;
- code =
- RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
- if (code == RXGEN_OPCODE)
- code = RXAFSCB_WhoAreYou(cb_conn, &interf);
+ if (haddr == host->host && hport == host->port) {
+ /* The existing callback connection matches the
+ * incoming connection so just use it.
+ */
+ code =
+ RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
+ if (code == RXGEN_OPCODE)
+ code = RXAFSCB_WhoAreYou(cb_conn, &interf);
+ } else {
+ /* We do not have a match. Create a new connection
+ * for the new addr/port and use multi_Rx to probe
+ * both of them simultaneously.
+ */
+ if (!sc)
+ sc = rxnull_NewClientSecurityObject();
+ cb_in = rx_NewConnection(haddr, hport, 1, sc, 0);
+ rx_SetConnDeadTime(cb_in, 50);
+ rx_SetConnHardDeadTime(cb_in, AFS_HARDDEADTIME);
+
+ code =
+ RXAFSCB_TellMeAboutYourself(cb_in, &interf, &caps);
+ if (code == RXGEN_OPCODE)
+ code = RXAFSCB_WhoAreYou(cb_in, &interf);
+ }
rx_PutConnection(cb_conn);
cb_conn=NULL;
H_LOCK;
- if (code == RXGEN_OPCODE) {
+ if ((code == RXGEN_OPCODE) ||
+ ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
identP = (struct Identity *)malloc(sizeof(struct Identity));
if (!identP) {
ViceLog(0, ("Failed malloc in h_GetHost_r\n"));
}
identP->valid = 0;
rx_SetSpecific(tcon, rxcon_ident_key, identP);
- /* The host on this connection was unable to respond to
- * the WhoAreYou. We will treat this as a new connection
- * from the existing host. The worst that can happen is
- * that we maintain some extra callback state information */
- if (host->interface) {
- ViceLog(0,
- ("Host %s:%d used to support WhoAreYou, deleting.\n",
- afs_inet_ntoa_r(host->host, hoststr),
- ntohs(host->port)));
- host->hostFlags |= HOSTDELETED;
- h_Unlock_r(host);
+ if (cb_in == NULL) {
+ /* The host on this connection was unable to respond to
+ * the WhoAreYou. We will treat this as a new connection
+ * from the existing host. The worst that can happen is
+ * that we maintain some extra callback state information */
+ if (host->interface) {
+ ViceLog(0,
+ ("Host %x (%s:%d) used to support WhoAreYou, deleting.\n",
+ host,
+ afs_inet_ntoa_r(host->host, hoststr),
+ ntohs(host->port)));
+ host->hostFlags |= HOSTDELETED;
+ host->hostFlags &= ~HWHO_INPROGRESS;
+ h_Unlock_r(host);
+ if (!held)
+ h_Release_r(host);
+ host = NULL;
+ goto retry;
+ }
+ } else {
+ /* The incoming connection does not support WhoAreYou but
+ * the original one might have. Use removeAddress_r() to
+ * remove this addr/port from the host that was found.
+ * If there are no more addresses left for the host it
+ * will be deleted. Then we retry.
+ */
+ removeAddress_r(host, haddr, hport);
+ host->hostFlags &= ~HWHO_INPROGRESS;
+ h_Unlock_r(host);
if (!held)
- h_Release_r(host);
- host = NULL;
- goto retry;
+ h_Release_r(host);
+ host = NULL;
+ goto retry;
}
} else if (code == 0) {
interfValid = 1;
* then this is not the same host as before. */
if (!host->interface
|| !afs_uuid_equal(&interf.uuid, &host->interface->uuid)) {
- ViceLog(25,
- ("Host %s:%d has changed its identity, deleting.\n",
- afs_inet_ntoa_r(host->host, hoststr), host->port));
- host->hostFlags |= HOSTDELETED;
+ if (cb_in) {
+ ViceLog(25,
+ ("Uuid doesn't match connection (%s:%d).\n",
+ afs_inet_ntoa_r(haddr, hoststr), ntohs(hport)));
+
+ removeAddress_r(host, haddr, hport);
+ } else {
+ ViceLog(25,
+ ("Uuid doesn't match host %x (%s:%d).\n",
+ host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
+
+ removeAddress_r(host, host->host, host->port);
+ }
+ host->hostFlags &= ~HWHO_INPROGRESS;
h_Unlock_r(host);
if (!held)
h_Release_r(host);
host = NULL;
goto retry;
+ } else if (cb_in) {
+ /* the UUID matched the client at the incoming addr/port
+ * but this is not the address of the active callback
+ * connection. Try that connection and see if the client
+ * is still there and if the reported UUID is the same.
+ */
+ int code2;
+ afsUUID uuid = host->interface->uuid;
+ cb_conn = host->callback_rxcon;
+ rx_GetConnection(cb_conn);
+ rx_SetConnDeadTime(cb_conn, 2);
+ rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
+ H_UNLOCK;
+ code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
+ H_LOCK;
+ rx_SetConnDeadTime(cb_conn, 50);
+ rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
+ rx_PutConnection(cb_conn);
+ cb_conn=NULL;
+ if (code2) {
+ /* The primary address is either not responding or
+ * is not the client we are looking for. Need to
+ * remove the primary address and add swap in the new
+ * callback connection, and destroy the old one.
+ */
+ struct rx_connection *rxconn;
+ ViceLog(0,("CB: ProbeUuid for host %x (%s:%d) failed %d\n",
+ host,
+ afs_inet_ntoa_r(host->host, hoststr),
+ ntohs(host->port),code2));
+
+ removeInterfaceAddr_r(host, host->host, host->port);
+ addInterfaceAddr_r(host, haddr, hport);
+ host->host = haddr;
+ host->port = hport;
+ rxconn = host->callback_rxcon;
+ host->callback_rxcon = cb_in;
+ cb_in = NULL;
+
+ if (rxconn) {
+ struct client *client;
+ /*
+ * If rx_DestroyConnection calls h_FreeConnection we will
+ * deadlock on the host_glock_mutex. Work around the problem
+ * by unhooking the client from the connection before
+ * destroying the connection.
+ */
+ client = rx_GetSpecific(rxconn, rxcon_client_key);
+ rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
+ rx_DestroyConnection(rxconn);
+ }
+ }
}
} else {
- afs_inet_ntoa_r(host->host, hoststr);
- ViceLog(0,
- ("CB: WhoAreYou failed for %s:%d, error %d\n", hoststr,
- ntohs(host->port), code));
- host->hostFlags |= VENUSDOWN;
+ if (cb_in) {
+ /* A callback to the incoming connection address is failing.
+ * Assume that the addr/port is no longer associated with the host
+ * returned by h_Lookup_r.
+ */
+ ViceLog(0,
+ ("CB: WhoAreYou failed for connection (%s:%d) , error %d\n",
+ afs_inet_ntoa_r(haddr, hoststr), ntohs(hport), code));
+ removeAddress_r(host, haddr, hport);
+ host->hostFlags &= ~HWHO_INPROGRESS;
+ h_Unlock_r(host);
+ if (!held)
+ h_Release_r(host);
+ host = NULL;
+ rx_DestroyConnection(cb_in);
+ return 0;
+ } else {
+ ViceLog(0,
+ ("CB: WhoAreYou failed for host %x (%s:%d), error %d\n",
+ host, afs_inet_ntoa_r(host->host, hoststr),
+ ntohs(host->port), code));
+ host->hostFlags |= VENUSDOWN;
+ }
}
if (caps.Capabilities_val
&& (caps.Capabilities_val[0] & CLIENT_CAPABILITY_ERRORTRANS))
else
host->hostFlags &= ~(HERRORTRANS);
host->hostFlags |= ALTADDR;
+ host->hostFlags &= ~HWHO_INPROGRESS;
h_Unlock_r(host);
} else if (host) {
if (!(host->hostFlags & ALTADDR)) {
/* another thread is doing the initialisation */
ViceLog(125,
- ("Host %s:%d waiting for host-init to complete\n",
- afs_inet_ntoa_r(host->host, hoststr),
+ ("Host %x (%s:%d) waiting for host-init to complete\n",
+ host, afs_inet_ntoa_r(host->host, hoststr),
ntohs(host->port)));
h_Lock_r(host);
h_Unlock_r(host);
if (!held)
h_Release_r(host);
ViceLog(125,
- ("Host %s:%d starting h_Lookup again\n",
- afs_inet_ntoa_r(host->host, hoststr),
+ ("Host %x (%s:%d) starting h_Lookup again\n",
+ host, afs_inet_ntoa_r(host->host, hoststr),
ntohs(host->port)));
goto retry;
}
if (host->interface)
afsUUID_to_string(&host->interface->uuid, uuid2, 127);
ViceLog(0,
- ("CB: new identity for host %s:%d, deleting(%x %x %s %s)\n",
- afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
+ ("CB: new identity for host %x (%s:%d), deleting(%x %x %s %s)\n",
+ host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port),
identP->valid, host->interface,
- identP->valid ? uuid1 : "",
- host->interface ? uuid2 : ""));
+ identP->valid ? uuid1 : "no_uuid",
+ host->interface ? uuid2 : "no_uuid"));
/* The host in the cache is not the host for this connection */
+ h_Lock_r(host);
host->hostFlags |= HOSTDELETED;
h_Unlock_r(host);
if (!held)
int pident = 0;
cb_conn = host->callback_rxcon;
rx_GetConnection(cb_conn);
+ host->hostFlags |= HWHO_INPROGRESS;
H_UNLOCK;
code =
RXAFSCB_TellMeAboutYourself(cb_conn, &interf, &caps);
rx_PutConnection(cb_conn);
cb_conn=NULL;
H_LOCK;
- if (code == RXGEN_OPCODE) {
+ if ((code == RXGEN_OPCODE) ||
+ ((code == 0) && (afs_uuid_equal(&interf.uuid, &nulluuid)))) {
if (!identP)
identP =
(struct Identity *)malloc(sizeof(struct Identity));
if (!pident)
rx_SetSpecific(tcon, rxcon_ident_key, identP);
ViceLog(25,
- ("Host %s:%d does not support WhoAreYou.\n",
- afs_inet_ntoa_r(host->host, hoststr),
+ ("Host %x (%s:%d) does not support WhoAreYou.\n",
+ host, afs_inet_ntoa_r(host->host, hoststr),
ntohs(host->port)));
code = 0;
} else if (code == 0) {
if (!pident)
rx_SetSpecific(tcon, rxcon_ident_key, identP);
ViceLog(25,
- ("WhoAreYou success on %s:%d\n",
- afs_inet_ntoa_r(host->host, hoststr),
+ ("WhoAreYou success on host %x (%s:%d)\n",
+ host, afs_inet_ntoa_r(host->host, hoststr),
ntohs(host->port)));
}
if (code == 0 && !identP->valid) {
if (oldHost) {
int probefail = 0;
- if (!(oheld = h_Held_r(oldHost)))
+ if (!h_Held_r(oldHost))
h_Hold_r(oldHost);
h_Lock_r(oldHost);
+ oldHost->hostFlags |= HWHO_INPROGRESS;
if (oldHost->interface) {
+ int code2;
afsUUID uuid = oldHost->interface->uuid;
cb_conn = oldHost->callback_rxcon;
rx_GetConnection(cb_conn);
rx_SetConnDeadTime(cb_conn, 2);
rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
H_UNLOCK;
- code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
+ code2 = RXAFSCB_ProbeUuid(cb_conn, &uuid);
H_LOCK;
rx_SetConnDeadTime(cb_conn, 50);
rx_SetConnHardDeadTime(cb_conn, AFS_HARDDEADTIME);
rx_PutConnection(cb_conn);
cb_conn=NULL;
- if (code && MultiProbeAlternateAddress_r(oldHost)) {
+ if (code2) {
+ /* The primary address is either not responding or
+ * is not the client we are looking for.
+ * MultiProbeAlternateAddress_r() will remove the
+ * alternate interfaces that do not have the same
+ * Uuid. */
+ ViceLog(0,("CB: ProbeUuid for host %x (%s:%d) failed %d\n",
+ oldHost,
+ afs_inet_ntoa_r(oldHost->host, hoststr),
+ ntohs(oldHost->port),code2));
+ MultiProbeAlternateAddress_r(oldHost);
probefail = 1;
}
} else {
probefail = 1;
}
- if (probefail) {
- /* The old host is either does not have a Uuid,
- * is not responding to Probes,
- * or does not have a matching Uuid.
- * Delete it! */
- oldHost->hostFlags |= HOSTDELETED;
- h_Unlock_r(oldHost);
- /* Let the holder be last release */
- if (!oheld) {
- h_Release_r(oldHost);
- }
- oldHost = NULL;
- }
- }
- if (oldHost) {
/* This is a new address for an existing host. Update
* the list of interfaces for the existing host and
* delete the host structure we just allocated. */
+
+ /* prevent warnings while manipulating interface lists */
+ host->hostFlags |= HOSTDELETED;
+
if (oldHost->host != haddr || oldHost->port != hport) {
+ struct rx_connection *rxconn;
+
ViceLog(25,
- ("CB: new addr %s:%d for old host %s:%d\n",
- afs_inet_ntoa_r(haddr, hoststr),
- ntohs(hport),
- afs_inet_ntoa_r(oldHost->host, hoststr2),
- ntohs(oldHost->port)));
- if (oldHost->host == haddr) {
- /* We have just been contacted by a client behind a NAT */
+ ("CB: Host %x (%s:%d) has new addr %s:%d\n",
+ oldHost,
+ afs_inet_ntoa_r(oldHost->host, hoststr2),
+ ntohs(oldHost->port),
+ afs_inet_ntoa_r(haddr, hoststr),
+ ntohs(hport)));
+ if (probefail || oldHost->host == haddr) {
+ /* The probe failed which means that the old address is
+ * either unreachable or is not the same host we were just
+ * contacted by. We will also remove addresses if only
+ * the port has changed because that indicates the client
+ * is behind a NAT.
+ */
removeInterfaceAddr_r(oldHost, oldHost->host, oldHost->port);
} else {
int i, found;
addInterfaceAddr_r(oldHost, haddr, hport);
oldHost->host = haddr;
oldHost->port = hport;
+ rxconn = oldHost->callback_rxcon;
+ oldHost->callback_rxcon = host->callback_rxcon;
+ host->callback_rxcon = NULL;
+
+ if (rxconn) {
+ struct client *client;
+ /*
+ * If rx_DestroyConnection calls h_FreeConnection we will
+ * deadlock on the host_glock_mutex. Work around the problem
+ * by unhooking the client from the connection before
+ * destroying the connection.
+ */
+ client = rx_GetSpecific(rxconn, rxcon_client_key);
+ rx_SetSpecific(rxconn, rxcon_client_key, (void *)0);
+ rx_DestroyConnection(rxconn);
+ }
}
- host->hostFlags |= HOSTDELETED;
+ host->hostFlags &= ~HWHO_INPROGRESS;
h_Unlock_r(host);
- /* regardless of whether or not we obtained the hold on
- * 'host', we are going to release it here because we
- * are replacing it with 'oldHost' and when CallPostamble
- * is called, the host that is obtained is going to be
- * 'oldHost' and not 'host'. */
+ /* release host because it was allocated by h_Alloc_r */
h_Release_r(host);
host = oldHost;
/* the new host is held and locked */
} else {
/* This really is a new host */
- hashInsertUuid_r(&identP->uuid, host);
+ h_AddHostToUuidHashTable_r(&identP->uuid, host);
cb_conn = host->callback_rxcon;
rx_GetConnection(cb_conn);
H_UNLOCK;
H_LOCK;
if (code == 0) {
ViceLog(25,
- ("InitCallBackState3 success on %s:%d\n",
- afs_inet_ntoa_r(host->host, hoststr),
+ ("InitCallBackState3 success on host %x (%s:%d)\n",
+ host, afs_inet_ntoa_r(host->host, hoststr),
ntohs(host->port)));
assert(interfValid == 1);
initInterfaceAddr_r(host, &interf);
}
}
if (code) {
- afs_inet_ntoa_r(host->host, hoststr);
ViceLog(0,
- ("CB: RCallBackConnectBack failed for %s:%d\n",
- hoststr, ntohs(host->port)));
+ ("CB: RCallBackConnectBack failed for %x (%s:%d)\n",
+ host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
host->hostFlags |= VENUSDOWN;
} else {
ViceLog(125,
- ("CB: RCallBackConnectBack succeeded for %s:%d\n",
- hoststr, ntohs(host->port)));
+ ("CB: RCallBackConnectBack succeeded for %x (%s:%d)\n",
+ host, afs_inet_ntoa_r(host->host, hoststr), ntohs(host->port)));
host->hostFlags |= RESETDONE;
}
}
else
host->hostFlags &= ~(HERRORTRANS);
host->hostFlags |= ALTADDR; /* host structure initialization complete */
+ host->hostFlags &= ~HWHO_INPROGRESS;
h_Unlock_r(host);
}
if (caps.Capabilities_val)
void
h_InitHostPackage()
{
+ memset(&nulluuid, 0, sizeof(afsUUID));
afsconf_GetLocalCell(confDir, localcellname, PR_MAXNAMELEN);
if (num_lrealms == -1) {
int i;
break;
}
- if (i=0) {
+ if (i == 0) {
ViceLog(0,
("afs_krb_get_lrealm failed, using %s.\n",
localcellname));
cnamelen = strlen(acell);
if (cnamelen) {
- if (afs_is_foreign_ticket_name(aname, "", acell, localcellname)) {
+ if (afs_is_foreign_ticket_name(aname, NULL, acell, localcellname)) {
ViceLog(2,
("MapName: cell is foreign. cell=%s, localcell=%s, localrealms={%s,%s,%s,%s}\n",
acell, localcellname, local_realms[0],local_realms[1],local_realms[2],local_realms[3]));
}
H_UNLOCK;
- code = pr_NameToId(&lnames, &lids);
+ code = hpr_NameToId(&lnames, &lids);
H_LOCK;
if (code == 0) {
if (lids.idlist_val) {
int created = 0;
client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
- if (client) {
+ if (client && client->sid == rxr_CidOf(tcon)
+ && client->VenusEpoch == rxr_GetEpoch(tcon)) {
client->refCount++;
h_Hold_r(client->host);
if (!client->deleted && client->prfail != 2) {
H_UNLOCK;
ObtainWriteLock(&client->lock); /* released at end */
H_LOCK;
+ } else {
+ client = NULL;
}
authClass = rx_SecurityClassOf((struct rx_connection *)tcon);
expTime = 0x7fffffff;
} else if (authClass == 2) {
afs_int32 kvno;
-
+
/* kerberos ticket */
code = rxkad_GetServerInfo(tcon, /*level */ 0, &expTime,
tname, tinst, tcell, &kvno);
if (!client) { /* loop */
host = h_GetHost_r(tcon); /* Returns it h_Held */
+ if (!host)
+ return 0;
+
retryfirstclient:
/* First try to find the client structure */
for (client = host->FirstClient; client; client = client->next) {
if (!client->deleted && (client->sid == rxr_CidOf(tcon))
&& (client->VenusEpoch == rxr_GetEpoch(tcon))) {
- if (client->tcon && (client->tcon != tcon)) {
- ViceLog(0,
- ("*** Vid=%d, sid=%x, tcon=%x, Tcon=%x ***\n",
- client->ViceId, client->sid, client->tcon,
- tcon));
- oldClient =
- (struct client *)rx_GetSpecific(client->tcon,
- rxcon_client_key);
- if (oldClient) {
- if (oldClient == client)
- rx_SetSpecific(client->tcon, rxcon_client_key,
- NULL);
- else
- ViceLog(0,
- ("Client-conn mismatch: CL1=%x, CN=%x, CL2=%x\n",
- client, client->tcon, oldClient));
- }
- client->tcon = (struct rx_connection *)0;
- }
client->refCount++;
H_UNLOCK;
ObtainWriteLock(&client->lock);
client->authClass = authClass; /* rx only */
client->sid = rxr_CidOf(tcon);
client->VenusEpoch = rxr_GetEpoch(tcon);
- client->CPS.prlist_val = 0;
+ client->CPS.prlist_val = NULL;
client->CPS.prlist_len = 0;
h_Unlock_r(host);
}
client->CPS.prlist_val = AnonCPS.prlist_val;
} else {
H_UNLOCK;
- code = pr_GetCPS(viceid, &client->CPS);
+ code = hpr_GetCPS(viceid, &client->CPS);
H_LOCK;
if (code) {
char hoststr[16];
ViceLog(0,
- ("pr_GetCPS failed(%d) for user %d, host %s:%d\n",
- code, viceid, afs_inet_ntoa_r(client->host->host,
- hoststr),
+ ("pr_GetCPS failed(%d) for user %d, host %x (%s:%d)\n",
+ code, viceid, client->host,
+ afs_inet_ntoa_r(client->host->host,hoststr),
ntohs(client->host->port)));
/* Although ubik_Call (called by pr_GetCPS) traverses thru
* the RPC from the other client structure's rock.
*/
oldClient = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
- if (oldClient && oldClient->tcon == tcon) {
+ if (oldClient && oldClient != client && oldClient->sid == rxr_CidOf(tcon)
+ && oldClient->VenusEpoch == rxr_GetEpoch(tcon)) {
char hoststr[16];
if (!oldClient->deleted) {
/* if we didn't create it, it's not ours to put back */
free(client->CPS.prlist_val);
client->CPS.prlist_val = NULL;
client->CPS.prlist_len = 0;
- if (client->tcon) {
- rx_SetSpecific(client->tcon, rxcon_client_key, (void *)0);
- }
}
/* We should perhaps check for 0 here */
client->refCount--;
FreeCE(client);
created = 0;
}
- ObtainWriteLock(&oldClient->lock);
oldClient->refCount++;
+ H_UNLOCK;
+ ObtainWriteLock(&oldClient->lock);
+ H_LOCK;
client = oldClient;
} else {
- oldClient->tcon = (struct rx_connection *)0;
ViceLog(0, ("FindClient: deleted client %x(%x) already had conn %x (host %s:%d), stolen by client %x(%x)\n",
oldClient, oldClient->sid, tcon,
afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
h_Unlock_r(host);
CurrentConnections++; /* increment number of connections */
}
- client->tcon = tcon;
rx_SetSpecific(tcon, rxcon_client_key, client);
ReleaseWriteLock(&client->lock);
GetClient(struct rx_connection *tcon, struct client **cp)
{
register struct client *client;
+ char hoststr[16];
H_LOCK;
*cp = NULL;
client = (struct client *)rx_GetSpecific(tcon, rxcon_client_key);
- if (client == NULL || client->tcon == NULL) {
+ if (client == NULL) {
ViceLog(0,
- ("GetClient: no client in conn %x (host %x:%d), VBUSYING\n",
- tcon, rxr_HostOf(tcon),ntohs(rxr_PortOf(tcon))));
+ ("GetClient: no client in conn %x (host %s:%d), VBUSYING\n",
+ tcon, afs_inet_ntoa_r(rxr_HostOf(tcon), hoststr),
+ ntohs(rxr_PortOf(tcon))));
H_UNLOCK;
return VBUSY;
}
- if (rxr_CidOf(client->tcon) != client->sid) {
+ if (rxr_CidOf(tcon) != client->sid || rxr_GetEpoch(tcon) != client->VenusEpoch) {
ViceLog(0,
("GetClient: tcon %x tcon sid %d client sid %d\n",
- client->tcon, rxr_CidOf(client->tcon), client->sid));
+ tcon, rxr_CidOf(tcon), client->sid));
H_UNLOCK;
return VBUSY;
}
- if (!(client && client->tcon && rxr_CidOf(client->tcon) == client->sid)) {
- if (!client)
- ViceLog(0, ("GetClient: no client in conn %x\n", tcon));
- else
- ViceLog(0,
- ("GetClient: tcon %x tcon sid %d client sid %d\n",
- client->tcon, client->tcon ? rxr_CidOf(client->tcon)
- : -1, client->sid));
- assert(0);
- }
if (client && client->LastCall > client->expTime && client->expTime) {
- char hoststr[16];
ViceLog(1,
("Token for %s at %s:%d expired %d\n", h_UserName(client),
afs_inet_ntoa_r(client->host->host, hoststr),
lnames.namelist_len = 0;
lnames.namelist_val = (prname *) 0;
lids.idlist_val[0] = client->ViceId;
- if (pr_IdToName(&lids, &lnames)) {
+ if (hpr_IdToName(&lids, &lnames)) {
/* We need to free id we alloced above! */
free(lids.idlist_val);
return "*UNKNOWN USER NAME*";
free(lids.idlist_val);
free(lnames.namelist_val);
return User;
-
} /*h_UserName */
char tmpStr[256];
char tbuffer[32];
char hoststr[16];
+ time_t LastCall, expTime;
H_LOCK;
+ LastCall = host->LastCall;
if (host->hostFlags & HOSTDELETED) {
H_UNLOCK;
return held;
"Host %s:%d down = %d, LastCall %s",
afs_inet_ntoa_r(host->host, hoststr),
ntohs(host->port), (host->hostFlags & VENUSDOWN),
- afs_ctime((time_t *) & host->LastCall, tbuffer,
+ afs_ctime(&LastCall, tbuffer,
sizeof(tbuffer)));
(void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
for (client = host->FirstClient; client; client = client->next) {
if (!client->deleted) {
- if (client->tcon) {
+ expTime = client->expTime;
(void)afs_snprintf(tmpStr, sizeof tmpStr,
" user id=%d, name=%s, sl=%s till %s",
client->ViceId, h_UserName(client),
authClass ? "Authenticated" :
"Not authenticated",
client->
- authClass ? afs_ctime((time_t *) & client->
- expTime, tbuffer,
+ authClass ? afs_ctime(&expTime, tbuffer,
sizeof(tbuffer))
: "No Limit\n");
(void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
- } else {
- (void)afs_snprintf(tmpStr, sizeof tmpStr,
- " user=%s, no current server connection\n",
- h_UserName(client));
- (void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
- }
(void)afs_snprintf(tmpStr, sizeof tmpStr, " CPS-%d is [",
client->CPS.prlist_len);
(void)STREAM_WRITE(tmpStr, strlen(tmpStr), 1, file);
} /*h_DumpHosts */
-
+#ifdef AFS_DEMAND_ATTACH_FS
/*
- * This counts the number of workstations, the number of active workstations,
- * and the number of workstations declared "down" (i.e. not heard from
- * recently). An active workstation has received a call since the cutoff
- * time argument passed.
+ * demand attach fs
+ * host state serialization
*/
-void
-h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
+static int h_stateFillHeader(struct host_state_header * hdr);
+static int h_stateCheckHeader(struct host_state_header * hdr);
+static int h_stateAllocMap(struct fs_dump_state * state);
+static int h_stateSaveHost(register struct host * host, int held, struct fs_dump_state * state);
+static int h_stateRestoreHost(struct fs_dump_state * state);
+static int h_stateRestoreIndex(struct host * h, int held, struct fs_dump_state * state);
+static int h_stateVerifyHost(struct host * h, int held, struct fs_dump_state * state);
+static int h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h, afs_uint32 addr, afs_uint16 port);
+static int h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h);
+static void h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out);
+static void h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out);
+
+
+/* this procedure saves all host state to disk for fast startup */
+int
+h_stateSave(struct fs_dump_state * state)
{
- register struct host *host;
- register int num = 0, active = 0, del = 0;
+ AssignInt64(state->eof_offset, &state->hdr->h_offset);
- H_LOCK;
- for (host = hostList; host; host = host->next) {
- if (!(host->hostFlags & HOSTDELETED)) {
- num++;
- if (host->ActiveCall > cutofftime)
- active++;
- if (host->hostFlags & VENUSDOWN)
- del++;
+ /* XXX debug */
+ ViceLog(0, ("h_stateSave: hostCount=%d\n", hostCount));
+
+ /* invalidate host state header */
+ memset(state->h_hdr, 0, sizeof(struct host_state_header));
+
+ if (fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
+ sizeof(struct host_state_header))) {
+ state->bail = 1;
+ goto done;
+ }
+
+ fs_stateIncEOF(state, sizeof(struct host_state_header));
+
+ h_Enumerate_r(h_stateSaveHost, hostList, (char *)state);
+ if (state->bail) {
+ goto done;
+ }
+
+ h_stateFillHeader(state->h_hdr);
+
+ /* write the real header to disk */
+ state->bail = fs_stateWriteHeader(state, &state->hdr->h_offset, state->h_hdr,
+ sizeof(struct host_state_header));
+
+ done:
+ return state->bail;
+}
+
+/* demand attach fs
+ * host state serialization
+ *
+ * this procedure restores all host state from a disk for fast startup
+ */
+int
+h_stateRestore(struct fs_dump_state * state)
+{
+ int i, records;
+
+ /* seek to the right position and read in the host state header */
+ if (fs_stateReadHeader(state, &state->hdr->h_offset, state->h_hdr,
+ sizeof(struct host_state_header))) {
+ state->bail = 1;
+ goto done;
+ }
+
+ /* check the validity of the header */
+ if (h_stateCheckHeader(state->h_hdr)) {
+ state->bail = 1;
+ goto done;
+ }
+
+ records = state->h_hdr->records;
+
+ if (h_stateAllocMap(state)) {
+ state->bail = 1;
+ goto done;
+ }
+
+ /* iterate over records restoring host state */
+ for (i=0; i < records; i++) {
+ if (h_stateRestoreHost(state) != 0) {
+ state->bail = 1;
+ break;
+ }
+ }
+
+ done:
+ return state->bail;
+}
+
+int
+h_stateRestoreIndices(struct fs_dump_state * state)
+{
+ h_Enumerate_r(h_stateRestoreIndex, hostList, (char *)state);
+ return state->bail;
+}
+
+static int
+h_stateRestoreIndex(struct host * h, int held, struct fs_dump_state * state)
+{
+ if (cb_OldToNew(state, h->cblist, &h->cblist)) {
+ return H_ENUMERATE_BAIL(held);
+ }
+ return held;
+}
+
+int
+h_stateVerify(struct fs_dump_state * state)
+{
+ h_Enumerate_r(h_stateVerifyHost, hostList, (char *)state);
+ return state->bail;
+}
+
+static int
+h_stateVerifyHost(struct host * h, int held, struct fs_dump_state * state)
+{
+ int i;
+
+ if (h == NULL) {
+ ViceLog(0, ("h_stateVerifyHost: error: NULL host pointer in linked list\n"));
+ return H_ENUMERATE_BAIL(held);
+ }
+
+ if (h->interface) {
+ for (i = h->interface->numberOfInterfaces-1; i >= 0; i--) {
+ if (h_stateVerifyAddrHash(state, h, h->interface->interface[i].addr,
+ h->interface->interface[i].port)) {
+ state->bail = 1;
+ }
+ }
+ if (h_stateVerifyUuidHash(state, h)) {
+ state->bail = 1;
+ }
+ } else if (h_stateVerifyAddrHash(state, h, h->host, h->port)) {
+ state->bail = 1;
+ }
+
+ if (cb_stateVerifyHCBList(state, h)) {
+ state->bail = 1;
+ }
+
+ done:
+ return held;
+}
+
+static int
+h_stateVerifyAddrHash(struct fs_dump_state * state, struct host * h, afs_uint32 addr, afs_uint16 port)
+{
+ int ret = 0, found = 0;
+ struct host *host = NULL;
+ struct h_AddrHashChain *chain;
+ int index = h_HashIndex(addr);
+ char tmp[16];
+ int chain_len = 0;
+
+ for (chain = hostAddrHashTable[index]; chain; chain = chain->next) {
+ host = chain->hostPtr;
+ if (host == NULL) {
+ afs_inet_ntoa_r(addr, tmp);
+ ViceLog(0, ("h_stateVerifyAddrHash: error: addr hash chain has NULL host ptr (lookup addr %s)\n", tmp));
+ ret = 1;
+ goto done;
+ }
+ if ((chain->addr == addr) && (chain->port == port)) {
+ if (host != h) {
+ ViceLog(0, ("h_stateVerifyAddrHash: warning: addr hash entry points to different host struct (%d, %d)\n",
+ h->index, host->index));
+ state->flags.warnings_generated = 1;
+ }
+ found = 1;
+ break;
+ }
+ if (chain_len > FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN) {
+ ViceLog(0, ("h_stateVerifyAddrHash: error: hash chain length exceeds %d; assuming there's a loop\n",
+ FS_STATE_H_MAX_ADDR_HASH_CHAIN_LEN));
+ ret = 1;
+ goto done;
+ }
+ chain_len++;
+ }
+
+ if (!found) {
+ afs_inet_ntoa_r(addr, tmp);
+ if (state->mode == FS_STATE_LOAD_MODE) {
+ ViceLog(0, ("h_stateVerifyAddrHash: error: addr %s not found in hash\n", tmp));
+ ret = 1;
+ goto done;
+ } else {
+ ViceLog(0, ("h_stateVerifyAddrHash: warning: addr %s not found in hash\n", tmp));
+ state->flags.warnings_generated = 1;
+ }
+ }
+
+ done:
+ return ret;
+}
+
+static int
+h_stateVerifyUuidHash(struct fs_dump_state * state, struct host * h)
+{
+ int ret = 0, found = 0;
+ struct host *host = NULL;
+ struct h_UuidHashChain *chain;
+ afsUUID * uuidp = &h->interface->uuid;
+ int index = h_UuidHashIndex(uuidp);
+ char tmp[40];
+ int chain_len = 0;
+
+ for (chain = hostUuidHashTable[index]; chain; chain = chain->next) {
+ host = chain->hostPtr;
+ if (host == NULL) {
+ afsUUID_to_string(uuidp, tmp, sizeof(tmp));
+ ViceLog(0, ("h_stateVerifyUuidHash: error: uuid hash chain has NULL host ptr (lookup uuid %s)\n", tmp));
+ ret = 1;
+ goto done;
+ }
+ if (host->interface &&
+ afs_uuid_equal(&host->interface->uuid, uuidp)) {
+ if (host != h) {
+ ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid hash entry points to different host struct (%d, %d)\n",
+ h->index, host->index));
+ state->flags.warnings_generated = 1;
+ }
+ found = 1;
+ goto done;
+ }
+ if (chain_len > FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN) {
+ ViceLog(0, ("h_stateVerifyUuidHash: error: hash chain length exceeds %d; assuming there's a loop\n",
+ FS_STATE_H_MAX_UUID_HASH_CHAIN_LEN));
+ ret = 1;
+ goto done;
+ }
+ chain_len++;
+ }
+
+ if (!found) {
+ afsUUID_to_string(uuidp, tmp, sizeof(tmp));
+ if (state->mode == FS_STATE_LOAD_MODE) {
+ ViceLog(0, ("h_stateVerifyUuidHash: error: uuid %s not found in hash\n", tmp));
+ ret = 1;
+ goto done;
+ } else {
+ ViceLog(0, ("h_stateVerifyUuidHash: warning: uuid %s not found in hash\n", tmp));
+ state->flags.warnings_generated = 1;
+ }
+ }
+
+ done:
+ return ret;
+}
+
+/* create the host state header structure */
+static int
+h_stateFillHeader(struct host_state_header * hdr)
+{
+ hdr->stamp.magic = HOST_STATE_MAGIC;
+ hdr->stamp.version = HOST_STATE_VERSION;
+}
+
+/* check the contents of the host state header structure */
+static int
+h_stateCheckHeader(struct host_state_header * hdr)
+{
+ int ret=0;
+
+ if (hdr->stamp.magic != HOST_STATE_MAGIC) {
+ ViceLog(0, ("check_host_state_header: invalid state header\n"));
+ ret = 1;
+ }
+ else if (hdr->stamp.version != HOST_STATE_VERSION) {
+ ViceLog(0, ("check_host_state_header: unknown version number\n"));
+ ret = 1;
+ }
+ return ret;
+}
+
+/* allocate the host id mapping table */
+static int
+h_stateAllocMap(struct fs_dump_state * state)
+{
+ state->h_map.len = state->h_hdr->index_max + 1;
+ state->h_map.entries = (struct idx_map_entry_t *)
+ calloc(state->h_map.len, sizeof(struct idx_map_entry_t));
+ return (state->h_map.entries != NULL) ? 0 : 1;
+}
+
+/* function called by h_Enumerate to save a host to disk */
+static int
+h_stateSaveHost(register struct host * host, int held, struct fs_dump_state * state)
+{
+ int i, if_len=0, hcps_len=0;
+ struct hostDiskEntry hdsk;
+ struct host_state_entry_header hdr;
+ struct Interface * ifp = NULL;
+ afs_int32 * hcps = NULL;
+ struct iovec iov[4];
+ int iovcnt = 2;
+
+ memset(&hdr, 0, sizeof(hdr));
+
+ if (state->h_hdr->index_max < host->index) {
+ state->h_hdr->index_max = host->index;
+ }
+
+ h_hostToDiskEntry_r(host, &hdsk);
+ if (host->interface) {
+ if_len = sizeof(struct Interface) +
+ ((host->interface->numberOfInterfaces-1) * sizeof(struct AddrPort));
+ ifp = (struct Interface *) malloc(if_len);
+ assert(ifp != NULL);
+ memcpy(ifp, host->interface, if_len);
+ hdr.interfaces = host->interface->numberOfInterfaces;
+ iov[iovcnt].iov_base = (char *) ifp;
+ iov[iovcnt].iov_len = if_len;
+ iovcnt++;
+ }
+ if (host->hcps.prlist_val) {
+ hdr.hcps = host->hcps.prlist_len;
+ hcps_len = hdr.hcps * sizeof(afs_int32);
+ hcps = (afs_int32 *) malloc(hcps_len);
+ assert(hcps != NULL);
+ memcpy(hcps, host->hcps.prlist_val, hcps_len);
+ iov[iovcnt].iov_base = (char *) hcps;
+ iov[iovcnt].iov_len = hcps_len;
+ iovcnt++;
+ }
+
+ if (hdsk.index > state->h_hdr->index_max)
+ state->h_hdr->index_max = hdsk.index;
+
+ hdr.len = sizeof(struct host_state_entry_header) +
+ sizeof(struct hostDiskEntry) + if_len + hcps_len;
+ hdr.magic = HOST_STATE_ENTRY_MAGIC;
+
+ iov[0].iov_base = (char *) &hdr;
+ iov[0].iov_len = sizeof(hdr);
+ iov[1].iov_base = (char *) &hdsk;
+ iov[1].iov_len = sizeof(struct hostDiskEntry);
+
+ if (fs_stateWriteV(state, iov, iovcnt)) {
+ ViceLog(0, ("h_stateSaveHost: failed to save host %d", host->index));
+ state->bail = 1;
+ }
+
+ fs_stateIncEOF(state, hdr.len);
+
+ state->h_hdr->records++;
+
+ done:
+ if (ifp)
+ free(ifp);
+ if (hcps)
+ free(hcps);
+ if (state->bail) {
+ return H_ENUMERATE_BAIL(held);
+ }
+ return held;
+}
+
+/* restores a host from disk */
+static int
+h_stateRestoreHost(struct fs_dump_state * state)
+{
+ int ifp_len=0, hcps_len=0, bail=0;
+ struct host_state_entry_header hdr;
+ struct hostDiskEntry hdsk;
+ struct host *host = NULL;
+ struct Interface *ifp = NULL;
+ afs_int32 * hcps = NULL;
+ struct iovec iov[3];
+ int iovcnt = 1;
+
+ if (fs_stateRead(state, &hdr, sizeof(hdr))) {
+ ViceLog(0, ("h_stateRestoreHost: failed to read host entry header from dump file '%s'\n",
+ state->fn));
+ bail = 1;
+ goto done;
+ }
+
+ if (hdr.magic != HOST_STATE_ENTRY_MAGIC) {
+ ViceLog(0, ("h_stateRestoreHost: fileserver state dump file '%s' is corrupt.\n",
+ state->fn));
+ bail = 1;
+ goto done;
+ }
+
+ iov[0].iov_base = (char *) &hdsk;
+ iov[0].iov_len = sizeof(struct hostDiskEntry);
+
+ if (hdr.interfaces) {
+ ifp_len = sizeof(struct Interface) +
+ ((hdr.interfaces-1) * sizeof(struct AddrPort));
+ ifp = (struct Interface *) malloc(ifp_len);
+ assert(ifp != NULL);
+ iov[iovcnt].iov_base = (char *) ifp;
+ iov[iovcnt].iov_len = ifp_len;
+ iovcnt++;
+ }
+ if (hdr.hcps) {
+ hcps_len = hdr.hcps * sizeof(afs_int32);
+ hcps = (afs_int32 *) malloc(hcps_len);
+ assert(hcps != NULL);
+ iov[iovcnt].iov_base = (char *) hcps;
+ iov[iovcnt].iov_len = hcps_len;
+ iovcnt++;
+ }
+
+ if ((ifp_len + hcps_len + sizeof(hdsk) + sizeof(hdr)) != hdr.len) {
+ ViceLog(0, ("h_stateRestoreHost: host entry header length fields are inconsistent\n"));
+ bail = 1;
+ goto done;
+ }
+
+ if (fs_stateReadV(state, iov, iovcnt)) {
+ ViceLog(0, ("h_stateRestoreHost: failed to read host entry\n"));
+ bail = 1;
+ goto done;
+ }
+
+ if (!hdr.hcps && hdsk.hcps_valid) {
+ /* valid, zero-length host cps ; does this ever happen? */
+ hcps = (afs_int32 *) malloc(sizeof(afs_int32));
+ assert(hcps != NULL);
+ }
+
+ host = GetHT();
+ assert(host != NULL);
+
+ if (ifp) {
+ host->interface = ifp;
+ }
+ if (hcps) {
+ host->hcps.prlist_val = hcps;
+ host->hcps.prlist_len = hdr.hcps;
+ }
+
+ h_diskEntryToHost_r(&hdsk, host);
+ h_SetupCallbackConn_r(host);
+
+ if (ifp) {
+ int i;
+ for (i = ifp->numberOfInterfaces-1; i >= 0; i--) {
+ }
+ h_AddHostToUuidHashTable_r(&ifp->uuid, host);
+ }
+ h_AddHostToAddrHashTable_r(host->host, host->port, host);
+ h_InsertList_r(host);
+
+ /* setup host id map entry */
+ state->h_map.entries[hdsk.index].old_idx = hdsk.index;
+ state->h_map.entries[hdsk.index].new_idx = host->index;
+
+ done:
+ if (bail) {
+ if (ifp)
+ free(ifp);
+ if (hcps)
+ free(hcps);
+ }
+ return bail;
+}
+
+/* serialize a host structure to disk */
+static void
+h_hostToDiskEntry_r(struct host * in, struct hostDiskEntry * out)
+{
+ out->host = in->host;
+ out->port = in->port;
+ out->hostFlags = in->hostFlags;
+ out->Console = in->Console;
+ out->hcpsfailed = in->hcpsfailed;
+ out->LastCall = in->LastCall;
+ out->ActiveCall = in->ActiveCall;
+ out->cpsCall = in->cpsCall;
+ out->cblist = in->cblist;
+#ifdef FS_STATS_DETAILED
+ out->InSameNetwork = in->InSameNetwork;
+#endif
+
+ /* special fields we save, but are not memcpy'd back on restore */
+ out->index = in->index;
+ out->hcps_len = in->hcps.prlist_len;
+ out->hcps_valid = (in->hcps.prlist_val == NULL) ? 0 : 1;
+}
+
+/* restore a host structure from disk */
+static void
+h_diskEntryToHost_r(struct hostDiskEntry * in, struct host * out)
+{
+ out->host = in->host;
+ out->port = in->port;
+ out->hostFlags = in->hostFlags;
+ out->Console = in->Console;
+ out->hcpsfailed = in->hcpsfailed;
+ out->LastCall = in->LastCall;
+ out->ActiveCall = in->ActiveCall;
+ out->cpsCall = in->cpsCall;
+ out->cblist = in->cblist;
+#ifdef FS_STATS_DETAILED
+ out->InSameNetwork = in->InSameNetwork;
+#endif
+}
+
+/* index translation routines */
+int
+h_OldToNew(struct fs_dump_state * state, afs_uint32 old, afs_uint32 * new)
+{
+ int ret = 0;
+
+ /* hosts use a zero-based index, so old==0 is valid */
+
+ if (old >= state->h_map.len) {
+ ViceLog(0, ("h_OldToNew: index %d is out of range\n", old));
+ ret = 1;
+ } else if (state->h_map.entries[old].old_idx != old) { /* sanity check */
+ ViceLog(0, ("h_OldToNew: index %d points to an invalid host record\n", old));
+ ret = 1;
+ } else {
+ *new = state->h_map.entries[old].new_idx;
+ }
+
+ done:
+ return ret;
+}
+#endif /* AFS_DEMAND_ATTACH_FS */
+
+
+/*
+ * This counts the number of workstations, the number of active workstations,
+ * and the number of workstations declared "down" (i.e. not heard from
+ * recently). An active workstation has received a call since the cutoff
+ * time argument passed.
+ */
+void
+h_GetWorkStats(int *nump, int *activep, int *delp, afs_int32 cutofftime)
+{
+ register struct host *host;
+ register int num = 0, active = 0, del = 0;
+
+ H_LOCK;
+ for (host = hostList; host; host = host->next) {
+ if (!(host->hostFlags & HOSTDELETED)) {
+ num++;
+ if (host->ActiveCall > cutofftime)
+ active++;
+ if (host->hostFlags & VENUSDOWN)
+ del++;
}
}
H_UNLOCK;
* Since it can serialize them, and pile up, it should be a separate LWP
* from other events.
*/
-int
+static int
CheckHost(register struct host *host, int held)
{
register struct client *client;
struct rx_connection *cb_conn = NULL;
int code;
+#ifdef AFS_DEMAND_ATTACH_FS
+ /* kill the checkhost lwp ASAP during shutdown */
+ FS_STATE_RDLOCK;
+ if (fs_state.mode == FS_MODE_SHUTDOWN) {
+ FS_STATE_UNLOCK;
+ return H_ENUMERATE_BAIL(held);
+ }
+ FS_STATE_UNLOCK;
+#endif
+
/* Host is held by h_Enumerate */
H_LOCK;
for (client = host->FirstClient; client; client = client->next) {
}
if (host->LastCall < checktime) {
h_Lock_r(host);
+ host->hostFlags |= HWHO_INPROGRESS;
if (!(host->hostFlags & HOSTDELETED)) {
cb_conn = host->callback_rxcon;
rx_GetConnection(cb_conn);
}
} else {
if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
+ char hoststr[16];
+ (void)afs_inet_ntoa_r(host->host, hoststr);
if (host->interface) {
afsUUID uuid = host->interface->uuid;
H_UNLOCK;
H_LOCK;
if (code) {
if (MultiProbeAlternateAddress_r(host)) {
- char hoststr[16];
- (void)afs_inet_ntoa_r(host->host, hoststr);
- ViceLog(0,
- ("ProbeUuid failed for host %s:%d\n",
- hoststr, ntohs(host->port)));
+ ViceLog(0,("CheckHost: Probing all interfaces of host %s:%d failed, code %d\n",
+ hoststr, ntohs(host->port), code));
host->hostFlags |= VENUSDOWN;
}
}
code = RXAFSCB_Probe(cb_conn);
H_LOCK;
if (code) {
- char hoststr[16];
- (void)afs_inet_ntoa_r(host->host, hoststr);
ViceLog(0,
- ("Probe failed for host %s:%d\n", hoststr,
- ntohs(host->port)));
+ ("CheckHost: Probe failed for host %s:%d, code %d\n",
+ hoststr, ntohs(host->port), code));
host->hostFlags |= VENUSDOWN;
}
}
cb_conn=NULL;
H_LOCK;
}
+ host->hostFlags &= ~HWHO_INPROGRESS;
h_Unlock_r(host);
}
H_UNLOCK;
} /*CheckHost */
+int
+CheckHost_r(register struct host *host, int held, char *dummy)
+{
+ register struct client *client;
+ struct rx_connection *cb_conn = NULL;
+ int code;
+
+#ifdef AFS_DEMAND_ATTACH_FS
+ /* kill the checkhost lwp ASAP during shutdown */
+ FS_STATE_RDLOCK;
+ if (fs_state.mode == FS_MODE_SHUTDOWN) {
+ FS_STATE_UNLOCK;
+ return H_ENUMERATE_BAIL(held);
+ }
+ FS_STATE_UNLOCK;
+#endif
+
+ /* Host is held by h_Enumerate_r */
+ for (client = host->FirstClient; client; client = client->next) {
+ if (client->refCount == 0 && client->LastCall < clientdeletetime) {
+ client->deleted = 1;
+ host->hostFlags |= CLIENTDELETED;
+ }
+ }
+ if (host->LastCall < checktime) {
+ h_Lock_r(host);
+ if (!(host->hostFlags & HOSTDELETED)) {
+ cb_conn = host->callback_rxcon;
+ rx_GetConnection(cb_conn);
+ if (host->LastCall < clientdeletetime) {
+ host->hostFlags |= HOSTDELETED;
+ if (!(host->hostFlags & VENUSDOWN)) {
+ host->hostFlags &= ~ALTADDR; /* alternate address invalid */
+ if (host->interface) {
+ H_UNLOCK;
+ code =
+ RXAFSCB_InitCallBackState3(cb_conn,
+ &FS_HostUUID);
+ H_LOCK;
+ } else {
+ H_UNLOCK;
+ code =
+ RXAFSCB_InitCallBackState(cb_conn);
+ H_LOCK;
+ }
+ host->hostFlags |= ALTADDR; /* alternate addresses valid */
+ if (code) {
+ char hoststr[16];
+ (void)afs_inet_ntoa_r(host->host, hoststr);
+ ViceLog(0,
+ ("CB: RCallBackConnectBack (host.c) failed for host %s:%d\n",
+ hoststr, ntohs(host->port)));
+ host->hostFlags |= VENUSDOWN;
+ }
+ /* Note: it's safe to delete hosts even if they have call
+ * back state, because break delayed callbacks (called when a
+ * message is received from the workstation) will always send a
+ * break all call backs to the workstation if there is no
+ *callback.
+ */
+ }
+ } else {
+ if (!(host->hostFlags & VENUSDOWN) && host->cblist) {
+ char hoststr[16];
+ (void)afs_inet_ntoa_r(host->host, hoststr);
+ if (host->interface) {
+ afsUUID uuid = host->interface->uuid;
+ H_UNLOCK;
+ code = RXAFSCB_ProbeUuid(cb_conn, &uuid);
+ H_LOCK;
+ if (code) {
+ if (MultiProbeAlternateAddress_r(host)) {
+ ViceLog(0,("CheckHost_r: Probing all interfaces of host %s:%d failed, code %d\n",
+ hoststr, ntohs(host->port), code));
+ host->hostFlags |= VENUSDOWN;
+ }
+ }
+ } else {
+ H_UNLOCK;
+ code = RXAFSCB_Probe(cb_conn);
+ H_LOCK;
+ if (code) {
+ ViceLog(0,
+ ("CheckHost_r: Probe failed for host %s:%d, code %d\n",
+ hoststr, ntohs(host->port), code));
+ host->hostFlags |= VENUSDOWN;
+ }
+ }
+ }
+ }
+ H_UNLOCK;
+ rx_PutConnection(cb_conn);
+ cb_conn=NULL;
+ H_LOCK;
+ }
+ h_Unlock_r(host);
+ }
+ return held;
+
+} /*CheckHost_r */
+
/*
* Set VenusDown for any hosts that have not had a call in 15 minutes and
* This routine is called roughly every 5 minutes.
*/
void
-h_CheckHosts()
+h_CheckHosts(void)
{
afs_uint32 now = FT_ApproxTime();
*/
checktime = now - 15 * 60;
clientdeletetime = now - 120 * 60; /* 2 hours ago */
- h_Enumerate(CheckHost, NULL);
-
+
+ H_LOCK;
+ h_Enumerate_r(CheckHost_r, hostList, NULL);
+ H_UNLOCK;
} /*h_CheckHosts */
/*
* This is called with host locked and held. At this point, the
- * hostHashTable should not have any entries for the alternate
+ * hostAddrHashTable should not have any entries for the alternate
* interfaces. This function has to insert these entries in the
- * hostHashTable.
+ * hostAddrHashTable.
*
* The addresses in the interfaceAddr list are in host byte order.
*/
afs_uint16 myPort;
int found;
struct Interface *interface;
+ char hoststr[16];
+ char uuidstr[128];
+ afs_uint16 port7001 = htons(7001);
assert(host);
assert(interf);
- ViceLog(125,
- ("initInterfaceAddr : host %x numAddr %d\n", host->host,
- interf->numberOfInterfaces));
-
number = interf->numberOfInterfaces;
myAddr = host->host; /* current interface address */
myPort = host->port; /* current port */
+ ViceLog(125,
+ ("initInterfaceAddr : host %s:%d numAddr %d\n",
+ afs_inet_ntoa_r(myAddr, hoststr), ntohs(myPort), number));
+
/* validation checks */
if (number < 0 || number > AFS_MAX_INTERFACE_ADDR) {
ViceLog(0,
- ("Number of alternate addresses returned is %d\n", number));
+ ("Invalid number of alternate addresses is %d\n", number));
return -1;
}
/*
- * Convert IP addresses to network byte order, and remove for
- * duplicate IP addresses from the interface list.
+ * The client's notion of its own IP addresses is not reliable.
+ *
+ * 1. The client list might contain private address ranges which
+ * are likely to be re-used by many clients allocated addresses
+ * by a NAT.
+ *
+ * 2. The client list will not include any public addresses that
+ * are hidden by a NAT.
+ *
+ * 3. Private address ranges that are exposed to the server will
+ * be obtained from the rx connections that use them.
+ *
+ * 4. Lists provided by the client are not necessarily truthful.
+ * Many existing clients (UNIX) do not refresh the IP address
+ * list as the actual assigned addresses change. The end result
+ * is that they report the initial address list for the lifetime
+ * of the process. In other words, a client can report addresses
+ * that they are in fact not using. Adding these addresses to
+ * the host interface list without verification is not only
+ * pointless, it is downright dangerous.
+ *
+ * We therefore do not add alternate addresses to the addr hash table.
+ * We only use them for multi-rx callback breaks.
+ */
+
+ /*
+ * Convert IP addresses to network byte order, and remove
+ * duplicate IP addresses from the interface list, and
+ * determine whether or not the incoming addr/port is
+ * listed. Note that if the address matches it is not
+ * truly a match because the port number for the entries
+ * in the interface list are port 7001 and the port number
+ * for this connection might not be 7001.
*/
for (i = 0, count = 0, found = 0; i < number; i++) {
interf->addr_in[i] = htonl(interf->addr_in[i]);
}
if (j == count) {
interf->addr_in[count] = interf->addr_in[i];
- if (interf->addr_in[count] == myAddr)
+ if (interf->addr_in[count] == myAddr &&
+ port7001 == myPort)
found = 1;
count++;
}
malloc(sizeof(struct Interface) +
(sizeof(struct AddrPort) * (count - 1)));
if (!interface) {
- ViceLog(0, ("Failed malloc in initInterfaceAddr_r\n"));
+ ViceLog(0, ("Failed malloc in initInterfaceAddr_r 1\n"));
assert(0);
}
interface->numberOfInterfaces = count;
} else {
interface = (struct Interface *)
malloc(sizeof(struct Interface) + (sizeof(struct AddrPort) * count));
- assert(interface);
+ if (!interface) {
+ ViceLog(0, ("Failed malloc in initInterfaceAddr_r 2\n"));
+ assert(0);
+ }
interface->numberOfInterfaces = count + 1;
interface->interface[count].addr = myAddr;
interface->interface[count].port = myPort;
+ interface->interface[count].valid = 1;
}
- interface->uuid = interf->uuid;
+
for (i = 0; i < count; i++) {
- interface->interface[i].addr = interf->addr_in[i];
+
+ interface->interface[i].addr = interf->addr_in[i];
/* We store the port as 7001 because the addresses reported by
* TellMeAboutYourself and WhoAreYou RPCs are only valid if they
* are coming from fully connected hosts (no NAT/PATs)
*/
- interface->interface[i].port = htons(7001);
+ interface->interface[i].port = port7001;
+ interface->interface[i].valid = 1; /* valid until a conflict is found */
}
+ interface->uuid = interf->uuid;
+
assert(!host->interface);
host->interface = interface;
+ afsUUID_to_string(&interface->uuid, uuidstr, 127);
+
+ ViceLog(125, ("--- uuid %s\n", uuidstr));
for (i = 0; i < host->interface->numberOfInterfaces; i++) {
- char hoststr[16];
ViceLog(125, ("--- alt address %s:%d\n",
afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
ntohs(host->interface->interface[i].port)));
/* deleted a HashChain structure for this address and host */
/* returns 1 on success */
-static int
-hashDelete_r(afs_uint32 addr, afs_uint16 port, struct host *host)
+int
+h_DeleteHostFromAddrHashTable_r(afs_uint32 addr, afs_uint16 port, struct host *host)
{
int flag;
- register struct h_hashChain **hp, *th;
+ register struct h_AddrHashChain **hp, *th;
- for (hp = &hostHashTable[h_HashIndex(addr)]; (th = *hp);) {
+ for (hp = &hostAddrHashTable[h_HashIndex(addr)]; (th = *hp);) {
assert(th->hostPtr);
if (th->hostPtr == host && th->addr == addr && th->port == port) {
*hp = th->next;
if (host->interface) {
/* check alternate addresses */
number = host->interface->numberOfInterfaces;
- assert(number > 0);
- for (i = 0; i < number; i++)
- ViceLog(level, ("%s:%d ", afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
- ntohs(host->interface->interface[i].port)));
+ if (number == 0)
+ ViceLog(level, ("no-addresses "));
+ else {
+ for (i = 0; i < number; i++)
+ ViceLog(level, ("%s:%d ", afs_inet_ntoa_r(host->interface->interface[i].addr, hoststr),
+ ntohs(host->interface->interface[i].port)));
+ }
}
ViceLog(level, ("\n"));
}
git://git.openafs.org / openafs.git / blobdiff