/**
* 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 afs_conn *
afs_ConnByHost(struct server *aserver, unsigned short aport, afs_int32 acell,
struct vrequest *areq, int aforce, afs_int32 locktype,
struct rx_connection **rxconn)
{
struct unixuser *tu;
struct afs_conn *tc = NULL;
struct srvAddr *sa = NULL;
*rxconn = NULL;
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
(if aforce is true, create a connection at the first address)
*/
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, rxconn);
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, rxconn);
if (tc)
break;
}
}
afs_PutUser(tu, SHARED_LOCK);
return tc;
} /*afs_ConnByHost */
int afspag_PSetTokens(char *ain, afs_int32 ainSize, struct AFS_UCRED **acred)
{
afs_int32 i;
register struct unixuser *tu;
struct afspag_cell *tcell;
struct ClearToken clear;
char *stp;
int stLen;
afs_int32 flag, set_parent_pag = 0;
afs_int32 pag, uid;
AFS_STATCNT(PSetTokens);
if (!afs_resourceinit_flag) {
return EIO;
}
memcpy((char *)&i, ain, sizeof(afs_int32));
ain += sizeof(afs_int32);
stp = ain; /* remember where the ticket is */
if (i < 0 || i > MAXKTCTICKETLEN)
return EINVAL; /* malloc may fail */
stLen = i;
ain += i; /* skip over ticket */
memcpy((char *)&i, ain, sizeof(afs_int32));
ain += sizeof(afs_int32);
if (i != sizeof(struct ClearToken)) {
return EINVAL;
}
memcpy((char *)&clear, ain, sizeof(struct ClearToken));
if (clear.AuthHandle == -1)
clear.AuthHandle = 999; /* more rxvab compat stuff */
ain += sizeof(struct ClearToken);
if (ainSize != 2 * sizeof(afs_int32) + stLen + sizeof(struct ClearToken)) {
/* still stuff left? we've got primary flag and cell name. Set these */
memcpy((char *)&flag, ain, sizeof(afs_int32)); /* primary id flag */
ain += sizeof(afs_int32); /* skip id field */
/* rest is cell name, look it up */
/* some versions of gcc appear to need != 0 in order to get this right */
if ((flag & 0x8000) != 0) { /* XXX Use Constant XXX */
flag &= ~0x8000;
set_parent_pag = 1;
}
tcell = afspag_GetCell(ain);
} else {
/* default to primary cell, primary id */
flag = 1; /* primary id */
tcell = afspag_GetPrimaryCell();
}
if (!tcell) return ESRCH;
if (set_parent_pag) {
#if defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
#if defined(AFS_DARWIN_ENV)
struct proc *p = current_proc(); /* XXX */
#else
struct proc *p = curproc; /* XXX */
#endif
#ifndef AFS_DARWIN80_ENV
uprintf("Process %d (%s) tried to change pags in PSetTokens\n",
p->p_pid, p->p_comm);
#endif
setpag(p, acred, -1, &pag, 1);
#else
#ifdef AFS_OSF_ENV
setpag(u.u_procp, acred, -1, &pag, 1); /* XXX u.u_procp is a no-op XXX */
#else
setpag(acred, -1, &pag, 1);
#endif
#endif
}
pag = PagInCred(*acred);
uid = (pag == NOPAG) ? (*acred)->cr_uid : pag;
/* now we just set the tokens */
tu = afs_GetUser(uid, tcell->cellnum, WRITE_LOCK);
if (!tu->cellinfo)
tu->cellinfo = (void *)tcell;
tu->vid = clear.ViceId;
if (tu->stp != NULL) {
afs_osi_Free(tu->stp, tu->stLen);
}
tu->stp = (char *)afs_osi_Alloc(stLen);
tu->stLen = stLen;
memcpy(tu->stp, stp, stLen);
tu->ct = clear;
#ifndef AFS_NOSTATS
afs_stats_cmfullperf.authent.TicketUpdates++;
afs_ComputePAGStats();
#endif /* AFS_NOSTATS */
tu->states |= UHasTokens;
tu->states &= ~UTokensBad;
afs_SetPrimary(tu, flag);
tu->tokenTime = osi_Time();
afs_PutUser(tu, WRITE_LOCK);
return 0;
}
/**
* 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 afs_conn *
afs_Conn(struct VenusFid *afid, struct vrequest *areq,
afs_int32 locktype, struct rx_connection **rxconn)
{
u_short fsport = AFS_FSPORT;
struct volume *tv;
struct afs_conn *tconn = NULL;
struct srvAddr *lowp = NULL;
struct unixuser *tu;
int notbusy;
int i;
struct srvAddr *sa1p;
*rxconn = NULL;
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 < AFS_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;
}
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, rxconn);
afs_PutUser(tu, SHARED_LOCK);
}
return tconn;
} /*afs_Conn */
