static void
break_ccpairs (struct ropa_client *c, Bool notify_clientp)
{
AFSCBFids fids;
AFSCBs cbs;
struct ropa_ccpair *cc;
AFSCallBack callback;
DIAGNOSTIC_CHECK_CLIENT(c);
fids.val = NULL;
fids.len = 0;
cbs.val = NULL;
cbs.len = 0;
while ((cc = listdeltail (c->callbacks)) != NULL) {
DIAGNOSTIC_CHECK_CCPAIR(cc);
update_callback (cc, &callback, CBDROPPED);
add_to_cb (&cc->cb->fid, &callback, &fids, &cbs);
break_ccpair (cc, FALSE);
}
if (notify_clientp)
notify_client (c, &fids, &cbs);
}
int
mnode_find (const AFSFid *fid, struct mnode **node)
{
struct mnode ptr, *res = NULL;
ptr.fid = *fid;
while (res == NULL) {
res = hashtabsearch (mnode_htab, &ptr);
if (res) {
if (res->flags.removedp == TRUE)
return ENOENT;
if (res->li)
listdel (mnode_lru, res->li);
if (res->ref == 0)
mnode_numfree--;
res->ref++;
} else if (mnode_numfree != 0) {
res = listdeltail (mnode_lru); assert (res);
assert (res->ref == 0);
hashtabdel (mnode_htab, res);
reset_node (res, fid);
hashtabadd (mnode_htab, res);
res->ref++;
} else {
/* XXX */
mlog_log (MDEBWARN,
"mnode_find: no free nodes, had to malloc()");
res = malloc(sizeof(struct mnode));
if (res == NULL) {
mlog_log (MDEBWARN,
"mnode_find: malloc() failed");
LWP_DispatchProcess(); /* Yield */
continue;
}
reset_node (res, fid);
hashtabadd (mnode_htab, res);
res->ref++;
}
}
assert(res->flags.removedp == FALSE);
*node = res;
res->li = listaddhead (mnode_lru, *node);
return 0;
}
static struct ropa_ccpair *
add_client (struct ropa_cb *cb, struct ropa_client *c)
{
struct timeval tv;
struct ropa_ccpair cckey, *cc;
assert (cb && c);
cckey.client = c;
cckey.cb = cb;
cc = hashtabsearch (ht_ccpairs, &cckey);
if (cc) {
listdel (lru_ccpair, cc->li);
cc->li = listaddhead (lru_ccpair, cc);
return cc;
}
/* The reverse of these are in break_ccpair */
callback_ref (cb);
client_ref (c);
cc = listdeltail (lru_ccpair);
DIAGNOSTIC_CHECK_CCPAIR(cc);
cc->li = NULL;
if (ccpairs_inuse_p (cc))
break_ccpair (cc, TRUE);
/* XXX do it for real */
gettimeofday(&tv, NULL);
cc->expire = tv.tv_sec + 3600;
heap_insert (heap_ccpairs, cc, &cc->heap);
LWP_NoYieldSignal (heap_ccpairs);
cc->cb_li = listaddtail (cb->ccpairs, cc);
cc->client = c;
cc->cb = cb;
cc->li = listaddhead (lru_ccpair, cc);
hashtabadd (ht_ccpairs, cc);
mlog_log (MDEBROPA, "add_client: added %x to callback %x.%x.%x",
c->addr[0].addr_in, cb->fid.Volume, cb->fid.Vnode, cb->fid.Unique);
return cc;
}
static struct ropa_client *
obtain_client (void)
{
struct ropa_client *c;
c = listdeltail (lru_clients);
DIAGNOSTIC_CHECK_CLIENT(c);
c->li = NULL;
if (client_inuse_p (c))
break_client (c, TRUE);
if (c->li) {
listdel(lru_clients, c->li);
c->li = NULL;
}
return c;
}
int
ropa_getcallback (uint32_t host, uint16_t port, const struct AFSFid *fid,
AFSCallBack *callback, int32_t voltype)
{
struct ropa_client *c;
struct ropa_cb cbkey, *cb;
struct ropa_ccpair *cc ;
struct AFSFid callback_fid;
debug_print_callbacks();
c = client_query (host, port);
if (c == NULL) {
mlog_log (MDEBROPA, "ropa_getcallback: didn't find client %x/%d",
host, port);
update_callback_time (DEFAULT_TIMEOUT, callback, CBSHARED);
return 0;
}
/*
* At this point the client should be firmly set
* in the ropa client database.
*/
#if 0
if (c->have_outstanding_callbacks)
break_outstanding_callbacks (c);
#endif
if (voltype == RWVOL) {
callback_fid = *fid;
} else {
callback_fid.Volume = fid->Volume;
callback_fid.Vnode = 0;
callback_fid.Unique = 0;
}
cbkey.fid = callback_fid;
cb = hashtabsearch (ht_callbacks, &cbkey);
if (cb == NULL) {
cb = listdeltail (lru_callback);
DIAGNOSTIC_CHECK_CALLBACK(cb);
cb->li = NULL;
if (callback_inuse_p (cb)) {
break_callback (cb, NULL, FALSE);
callback_ref(cb);
} else {
callback_ref(cb);
cb->li = listaddhead (lru_callback, cb);
}
cb->fid = callback_fid;
hashtabadd (ht_callbacks, cb);
mlog_log (MDEBROPA, "ropa_getcallback: added callback %x.%x.%x:%x",
callback_fid.Volume, callback_fid.Vnode,
callback_fid.Unique, host);
} else {
mlog_log (MDEBROPA, "ropa_getcallback: found callback %x.%x.%x:%x",
callback_fid.Volume, callback_fid.Vnode,
callback_fid.Unique, host);
callback_ref(cb);
}
cc = add_client (cb, c);
callback_deref (cb);
update_callback (cc, callback, CBSHARED);
debug_print_callbacks();
return 0;
}