/*
* Implements:
*/
-#include "../afs/param.h" /* Should be always first */
#include <afsconfig.h>
+#include "afs/param.h"
-RCSID("$Header$");
+RCSID
+ ("$Header$");
-#include "../afs/stds.h"
-#include "../afs/sysincludes.h" /* Standard vendor system headers */
+#include "afs/stds.h"
+#include "afs/sysincludes.h" /* Standard vendor system headers */
#if !defined(UKERNEL)
+#if !defined(AFS_LINUX20_ENV)
#include <net/if.h>
+#endif
#include <netinet/in.h>
#ifdef AFS_SGI62_ENV
-#include "../h/hashing.h"
+#include "h/hashing.h"
#endif
-#if !defined(AFS_HPUX110_ENV) && !defined(AFS_LINUX20_ENV)
+#if !defined(AFS_HPUX110_ENV) && !defined(AFS_LINUX20_ENV) && !defined(AFS_DARWIN60_ENV)
#include <netinet/in_var.h>
#endif /* ! AFS_HPUX110_ENV */
#endif /* !defined(UKERNEL) */
-#include "../afs/afsincludes.h" /* Afs-based standard headers */
-#include "../afs/afs_stats.h" /* afs statistics */
+#include "afsincludes.h" /* Afs-based standard headers */
+#include "afs/afs_stats.h" /* afs statistics */
#if defined(AFS_SUN56_ENV)
#include <inet/led.h>
#include <inet/ip.h>
#endif
-/* Imported variables */
-/* these are for storing alternate interface addresses - from afs_callback.c */
-extern struct interfaceAddr afs_cb_interface;
-
-
-/* Imported functions. */
-struct rx_securityClass *rxnull_NewClientSecurityObject();
-struct rx_securityClass *rxkad_NewClientSecurityObject();
-
/* Exported variables */
-afs_rwlock_t afs_xconn; /* allocation lock for new things */
-afs_rwlock_t afs_xinterface; /* for multiple client address */
-
-/* Local variables */
-afs_int32 cryptall = 0;
+afs_rwlock_t afs_xconn; /* allocation lock for new things */
+afs_rwlock_t afs_xinterface; /* for multiple client address */
+afs_int32 cryptall = 0; /* encrypt all communications */
unsigned int VNOSERVERS = 0;
-struct conn *afs_Conn(afid, areq, locktype)
- register struct VenusFid *afid;
- register struct vrequest *areq;
- afs_int32 locktype;
+
+/**
+ * Try setting up a connection to the server containing the specified fid.
+ * Gets the volume, checks if it's up and does the connection by server address.
+ *
+ * @param afid
+ * @param areq Request filled in by the caller.
+ * @param locktype Type of lock that will be used.
+ *
+ * @return The conn struct, or NULL.
+ */
+struct conn *
+afs_Conn(register struct VenusFid *afid, register struct vrequest *areq,
+ afs_int32 locktype)
{
- u_short fsport=AFS_FSPORT;
- struct volume *tv;
- struct conn *tconn = (struct conn *)0;
- struct srvAddr *lowp= (struct srvAddr *)0;
- struct unixuser *tu;
- int notbusy;
- int i;
- struct srvAddr *sa1p;
-
- AFS_STATCNT(afs_Conn);
- tv = afs_GetVolume(afid, areq, READ_LOCK);
- if (!tv) {
- if (areq) {
- afs_FinalizeReq(areq);
- areq->volumeError = 1;
- }
- return (struct conn *) 0;
- }
-
- if (tv->serverHost[0] && tv->serverHost[0]->cell) {
- fsport = tv->serverHost[0]->cell->fsport;
- }
- else {
- VNOSERVERS++;
- }
-
- /* First is always lowest rank, if it's up */
- if ((tv->status[0] == not_busy) && tv->serverHost[0] &&
- !(tv->serverHost[0]->addr->sa_flags & SRVR_ISDOWN))
- lowp = tv->serverHost[0]->addr;
-
- /* Otherwise we look at all of them. There are seven levels of
- * not_busy. This means we will check a volume seven times before it
- * is marked offline. Ideally, we only need two levels, but this
- * serves a second purpose of waiting some number of seconds before
- * the client decides the volume is offline (ie: a clone could finish
- * in this time).
- */
- for (notbusy = not_busy; (!lowp && (notbusy <= end_not_busy)); notbusy++) {
- for (i=0 ;i<MAXHOSTS && tv->serverHost[i];i++) {
- if (tv->status[i] != notbusy) {
- if (tv->status[i] == rd_busy || tv->status[i] == rdwr_busy) {
- if (!areq->busyCount)
- areq->busyCount++;
- } else if (tv->status[i] == offline) {
- if (!areq->volumeError)
- areq->volumeError = VOLMISSING;
+ u_short fsport = AFS_FSPORT;
+ struct volume *tv;
+ struct conn *tconn = NULL;
+ struct srvAddr *lowp = NULL;
+ struct unixuser *tu;
+ int notbusy;
+ int i;
+ struct srvAddr *sa1p;
+
+ AFS_STATCNT(afs_Conn);
+ /* Get fid's volume. */
+ tv = afs_GetVolume(afid, areq, READ_LOCK);
+ if (!tv) {
+ if (areq) {
+ afs_FinalizeReq(areq);
+ areq->volumeError = 1;
+ }
+ return NULL;
+ }
+
+ if (tv->serverHost[0] && tv->serverHost[0]->cell) {
+ fsport = tv->serverHost[0]->cell->fsport;
+ } else {
+ VNOSERVERS++;
+ }
+
+ /* First is always lowest rank, if it's up */
+ if ((tv->status[0] == not_busy) && tv->serverHost[0]
+ && !(tv->serverHost[0]->addr->sa_flags & SRVR_ISDOWN) &&
+ !(((areq->idleError > 0) || (areq->tokenError > 0))
+ && (areq->skipserver[0] == 1)))
+ lowp = tv->serverHost[0]->addr;
+
+ /* Otherwise we look at all of them. There are seven levels of
+ * not_busy. This means we will check a volume seven times before it
+ * is marked offline. Ideally, we only need two levels, but this
+ * serves a second purpose of waiting some number of seconds before
+ * the client decides the volume is offline (ie: a clone could finish
+ * in this time).
+ */
+ for (notbusy = not_busy; (!lowp && (notbusy <= end_not_busy)); notbusy++) {
+ for (i = 0; i < MAXHOSTS && tv->serverHost[i]; i++) {
+ if (((areq->tokenError > 0)||(areq->idleError > 0))
+ && (areq->skipserver[i] == 1))
+ continue;
+ if (tv->status[i] != notbusy) {
+ if (tv->status[i] == rd_busy || tv->status[i] == rdwr_busy) {
+ if (!areq->busyCount)
+ areq->busyCount++;
+ } else if (tv->status[i] == offline) {
+ if (!areq->volumeError)
+ areq->volumeError = VOLMISSING;
+ }
+ continue;
}
- continue;
- }
- for (sa1p = tv->serverHost[i]->addr; sa1p; sa1p = sa1p->next_sa) {
- if (sa1p->sa_flags & SRVR_ISDOWN)
- continue;
- if (!lowp || (lowp->sa_iprank > sa1p->sa_iprank))
- lowp = sa1p;
- }
- }
- }
- afs_PutVolume(tv, READ_LOCK);
-
- if (lowp) {
- tu = afs_GetUser(areq->uid, afid->Cell, SHARED_LOCK);
- tconn = afs_ConnBySA(lowp, fsport, afid->Cell, tu,
- 0/*!force*/, 1/*create*/, locktype);
-
- afs_PutUser(tu, SHARED_LOCK);
- }
-
- return tconn;
-} /*afs_Conn*/
-
-
-struct conn *afs_ConnBySA(struct srvAddr *sap, unsigned short aport,
- afs_int32 acell, struct unixuser *tu,
- int force_if_down, afs_int32 create, afs_int32 locktype)
+ for (sa1p = tv->serverHost[i]->addr; sa1p; sa1p = sa1p->next_sa) {
+ if (sa1p->sa_flags & SRVR_ISDOWN)
+ continue;
+ if (!lowp || (lowp->sa_iprank > sa1p->sa_iprank))
+ lowp = sa1p;
+ }
+ }
+ }
+ afs_PutVolume(tv, READ_LOCK);
+
+ if (lowp) {
+ tu = afs_GetUser(areq->uid, afid->Cell, SHARED_LOCK);
+ tconn = afs_ConnBySA(lowp, fsport, afid->Cell, tu, 0 /*!force */ ,
+ 1 /*create */ , locktype);
+
+ afs_PutUser(tu, SHARED_LOCK);
+ }
+
+ return tconn;
+} /*afs_Conn */
+
+
+/**
+ * Connects to a server by it's server address.
+ *
+ * @param sap Server address.
+ * @param aport Server port.
+ * @param acell
+ * @param tu Connect as this user.
+ * @param force_if_down
+ * @param create
+ * @param locktype Specifies type of lock to be used for this function.
+ *
+ * @return The new connection.
+ */
+struct conn *
+afs_ConnBySA(struct srvAddr *sap, unsigned short aport, afs_int32 acell,
+ struct unixuser *tu, int force_if_down, afs_int32 create,
+ afs_int32 locktype)
{
- struct conn *tc=0;
- struct rx_securityClass *csec; /*Security class object*/
- int isec; /*Security index*/
+ struct conn *tc = 0;
+ struct rx_securityClass *csec; /*Security class object */
+ int isec; /*Security index */
int service;
if (!sap || ((sap->sa_flags & SRVR_ISDOWN) && !force_if_down)) {
/* sa is known down, and we don't want to force it. */
- return (struct conn *)0;
+ return NULL;
}
- ObtainSharedLock(&afs_xconn,15);
- for (tc = sap->conns; tc; tc=tc->next) {
- if (tc->user == tu && tc->port == aport) {
- break;
- }
- }
+ ObtainSharedLock(&afs_xconn, 15);
+ /* Get conn by port and user. */
+ for (tc = sap->conns; tc; tc = tc->next) {
+ if (tc->user == tu && tc->port == aport) {
+ break;
+ }
+ }
if (!tc && !create) {
- ReleaseSharedLock(&afs_xconn);
- return (struct conn *)0;
+ /* Not found and can't create a new one. */
+ ReleaseSharedLock(&afs_xconn);
+ return NULL;
+ }
+
+ if (AFS_IS_DISCONNECTED && !AFS_IN_SYNC) {
+ afs_warnuser("afs_ConnBySA: disconnected\n");
+ ReleaseSharedLock(&afs_xconn);
+ return NULL;
}
if (!tc) {
- /* No such connection structure exists. Create one and splice it in.
- * Make sure the server record has been marked as used (for the purposes
- * of calculating up & down times, it's now considered to be an
- * ``active'' server). Also make sure the server's lastUpdateEvalTime
- * gets set, marking the time of its ``birth''.
- */
- UpgradeSToWLock(&afs_xconn,37);
- tc = (struct conn *) afs_osi_Alloc(sizeof(struct conn));
- bzero((char *)tc, sizeof(struct conn));
+ /* No such connection structure exists. Create one and splice it in.
+ * Make sure the server record has been marked as used (for the purposes
+ * of calculating up & down times, it's now considered to be an
+ * ``active'' server). Also make sure the server's lastUpdateEvalTime
+ * gets set, marking the time of its ``birth''.
+ */
+ UpgradeSToWLock(&afs_xconn, 37);
+ tc = (struct conn *)afs_osi_Alloc(sizeof(struct conn));
+ memset((char *)tc, 0, sizeof(struct conn));
tc->user = tu;
tc->port = aport;
tc->srvr = sap;
- tc->refCount = 0; /* bumped below */
+ tc->refCount = 0; /* bumped below */
tc->forceConnectFS = 1;
- tc->id = (struct rx_connection *) 0;
+ tc->id = (struct rx_connection *)0;
tc->next = sap->conns;
sap->conns = tc;
- afs_ActivateServer(sap);
+ afs_ActivateServer(sap);
ConvertWToSLock(&afs_xconn);
- }
+ } /* end of if (!tc) */
tc->refCount++;
if (tu->states & UTokensBad) {
/* we may still have an authenticated RPC connection here,
- * we'll have to create a new, unauthenticated, connection.
- * Perhaps a better way to do this would be to set
- * conn->forceConnectFS on all conns when the token first goes
- * bad, but that's somewhat trickier, due to locking
- * constraints (though not impossible).
- */
+ * we'll have to create a new, unauthenticated, connection.
+ * Perhaps a better way to do this would be to set
+ * conn->forceConnectFS on all conns when the token first goes
+ * bad, but that's somewhat trickier, due to locking
+ * constraints (though not impossible).
+ */
if (tc->id && (rx_SecurityClassOf(tc->id) != 0)) {
- tc->forceConnectFS = 1; /* force recreation of connection */
+ tc->forceConnectFS = 1; /* force recreation of connection */
}
tu->vid = UNDEFVID; /* forcibly disconnect the authentication info */
}
- if (tc->forceConnectFS) {
- UpgradeSToWLock(&afs_xconn,38);
- csec = (struct rx_securityClass *) 0;
+ if (tc->forceConnectFS) {
+ UpgradeSToWLock(&afs_xconn, 38);
+ csec = (struct rx_securityClass *)0;
if (tc->id) {
AFS_GUNLOCK();
rx_DestroyConnection(tc->id);
service = 1;
isec = 0;
if (tu->vid != UNDEFVID) {
- int level;
-
- if (cryptall) {
- level=rxkad_crypt;
- } else {
- level=rxkad_clear;
- }
- isec=2;
- /* kerberos tickets on channel 2 */
- csec = rxkad_NewClientSecurityObject(level, tu->ct.HandShakeKey,
- /* kvno */
- tu->ct.AuthHandle,
- tu->stLen, tu->stp);
+ int level;
+
+ if (cryptall) {
+ level = rxkad_crypt;
+ } else {
+ level = rxkad_clear;
+ }
+ isec = 2;
+ /* kerberos tickets on channel 2 */
+ csec = rxkad_NewClientSecurityObject(level,
+ (struct ktc_encryptionKey *)tu->ct.HandShakeKey,
+ /* kvno */
+ tu->ct.AuthHandle, tu->stLen,
+ tu->stp);
}
if (isec == 0)
csec = rxnull_NewClientSecurityObject();
AFS_GUNLOCK();
tc->id = rx_NewConnection(sap->sa_ip, aport, service, csec, isec);
AFS_GLOCK();
- if (service == 52) {
- rx_SetConnHardDeadTime(tc->id, AFS_HARDDEADTIME);
- }
-
+ if (service == 52) {
+ rx_SetConnHardDeadTime(tc->id, afs_rx_harddead);
+ }
+ rx_SetConnIdleDeadTime(tc->id, afs_rx_idledead);
tc->forceConnectFS = 0; /* apparently we're appropriately connected now */
if (csec)
rxs_Release(csec);
ConvertWToSLock(&afs_xconn);
- }
+ } /* end of if (tc->forceConnectFS)*/
ReleaseSharedLock(&afs_xconn);
return tc;
}
-/*
- * afs_ConnByHost
- *
+
+/**
* forceConnectFS is set whenever we must recompute the connection. UTokensBad
* is true only if we know that the tokens are bad. We thus clear this flag
* when we get a new set of tokens..
* Having force... true and UTokensBad true simultaneously means that the tokens
* went bad and we're supposed to create a new, unauthenticated, connection.
+ *
+ * @param aserver Server to connect to.
+ * @param aport Connection port.
+ * @param acell The cell where all of this happens.
+ * @param areq The request.
+ * @param aforce Force connection?
+ * @param locktype Type of lock to be used.
+ *
+ * @return The established connection.
*/
-struct conn *afs_ConnByHost(aserver, aport, acell, areq, aforce, locktype)
- struct server *aserver;
- afs_int32 acell;
- unsigned short aport;
- struct vrequest *areq;
- int aforce;
- afs_int32 locktype;
-{ /*afs_ConnByHost*/
-
+struct conn *
+afs_ConnByHost(struct server *aserver, unsigned short aport, afs_int32 acell,
+ struct vrequest *areq, int aforce, afs_int32 locktype)
+{
struct unixuser *tu;
- struct conn *tc=0;
- struct srvAddr *sa=0;
+ struct conn *tc = 0;
+ struct srvAddr *sa = 0;
AFS_STATCNT(afs_ConnByHost);
+
+ if (AFS_IS_DISCONNECTED && !AFS_IN_SYNC) {
+ afs_warnuser("afs_ConnByHost: disconnected\n");
+ return NULL;
+ }
+
/*
1. look for an existing connection
2. create a connection at an address believed to be up
tu = afs_GetUser(areq->uid, acell, SHARED_LOCK);
- for (sa = aserver->addr; sa; sa = sa->next_sa) {
- tc = afs_ConnBySA(sa, aport, acell, tu, aforce,
- 0/*don't create one*/,
- locktype);
- if (tc)
+ for (sa = aserver->addr; sa; sa = sa->next_sa) {
+ tc = afs_ConnBySA(sa, aport, acell, tu, aforce,
+ 0 /*don't create one */ ,
+ locktype);
+ if (tc)
break;
}
if (!tc) {
- for (sa = aserver->addr; sa; sa = sa->next_sa) {
- tc = afs_ConnBySA(sa, aport, acell, tu, aforce,
- 1/*create one*/,
- locktype);
- if (tc)
- break;
- }
+ for (sa = aserver->addr; sa; sa = sa->next_sa) {
+ tc = afs_ConnBySA(sa, aport, acell, tu, aforce,
+ 1 /*create one */ ,
+ locktype);
+ if (tc)
+ break;
+ }
}
afs_PutUser(tu, SHARED_LOCK);
return tc;
-} /*afs_ConnByHost*/
+} /*afs_ConnByHost */
-struct conn *afs_ConnByMHosts(ahosts, aport, acell, areq, locktype)
- struct server *ahosts[];
- afs_int32 acell;
- unsigned short aport;
- register struct vrequest *areq;
- afs_int32 locktype;
+/**
+ * Connect by multiple hosts.
+ * Try to connect to one of the hosts from the ahosts array.
+ *
+ * @param ahosts Multiple hosts to connect to.
+ * @param aport Connection port.
+ * @param acell The cell where all of this happens.
+ * @param areq The request.
+ * @param locktype Type of lock to be used.
+ *
+ * @return The established connection or NULL.
+ */
+struct conn *
+afs_ConnByMHosts(struct server *ahosts[], unsigned short aport,
+ afs_int32 acell, register struct vrequest *areq,
+ afs_int32 locktype)
{
register afs_int32 i;
register struct conn *tconn;
/* try to find any connection from the set */
AFS_STATCNT(afs_ConnByMHosts);
- for (i=0;i<MAXCELLHOSTS;i++) {
- if ((ts = ahosts[i]) == (struct server *) 0) break;
- tconn = afs_ConnByHost(ts, aport, acell,
- areq, 0, locktype);
+ for (i = 0; i < MAXCELLHOSTS; i++) {
+ if ((ts = ahosts[i]) == NULL)
+ break;
+ tconn = afs_ConnByHost(ts, aport, acell, areq, 0, locktype);
if (tconn) {
- return tconn;
+ return tconn;
}
}
- return (struct conn *) 0;
+ return NULL;
-} /*afs_ConnByMHosts*/
+} /*afs_ConnByMHosts */
-void afs_PutConn(ac, locktype)
- register struct conn *ac;
- afs_int32 locktype;
+/**
+ * Decrement reference count to this connection.
+ * @param ac
+ * @param locktype
+ */
+void
+afs_PutConn(register struct conn *ac, afs_int32 locktype)
{
AFS_STATCNT(afs_PutConn);
ac->refCount--;
-} /*afs_PutConn*/
+} /*afs_PutConn */
-/* for multi homed clients, an RPC may timeout because of a
-client network interface going down. We need to reopen new
-connections in this case
-*/
-ForceNewConnections(sap)
-struct srvAddr *sap;
+/**
+ * For multi homed clients, a RPC may timeout because of a
+ * client network interface going down. We need to reopen new
+ * connections in this case.
+ *
+ * @param sap Server address.
+ */
+void
+ForceNewConnections(struct srvAddr *sap)
{
- struct conn *tc=0;
+ struct conn *tc = 0;
- if ( !sap) return; /* defensive check */
+ if (!sap)
+ return; /* defensive check */
- /* if client is not multihomed, do nothing */
- ObtainReadLock(&afs_xinterface);
- if ( afs_cb_interface.numberOfInterfaces <= 1 )
- {
- ReleaseReadLock(&afs_xinterface);
- return;
- }
- ReleaseReadLock(&afs_xinterface);
-
- ObtainWriteLock(&afs_xconn,413);
- for (tc = sap->conns; tc; tc=tc->next)
- tc->forceConnectFS=1;
- ReleaseWriteLock(&afs_xconn);
+ ObtainWriteLock(&afs_xconn, 413);
+ for (tc = sap->conns; tc; tc = tc->next)
+ tc->forceConnectFS = 1;
+ ReleaseWriteLock(&afs_xconn);
}
git://git.openafs.org / openafs.git / blobdiff