/* Add YP entries to active servers */
void yp_add (const char *mount)
{
struct yp_server *server;
/* make sure YP thread is not modifying the lists */
thread_rwlock_rlock (&yp_lock);
/* make sure we don't race against another yp_add */
thread_mutex_lock (&yp_pending_lock);
server = (struct yp_server *)active_yps;
while (server)
{
ypdata_t *yp;
/* add new ypdata to each servers pending yp */
if ((yp = create_yp_entry (mount)) != NULL)
{
DEBUG2 ("Adding %s to %s", mount, server->url);
yp->server = server;
yp->touch_interval = server->touch_interval;
yp->next = server->pending_mounts;
yp->next_update = time(NULL) + 5;
server->pending_mounts = yp;
yp_update = 1;
}
server = server->next;
}
thread_mutex_unlock (&yp_pending_lock);
thread_rwlock_unlock (&yp_lock);
}
/* Check for changes in the YP servers configured */
static void check_servers (void)
{
struct yp_server *server = (struct yp_server *)active_yps,
**server_p = (struct yp_server **)&active_yps;
while (server)
{
if (server->remove)
{
struct yp_server *to_go = server;
DEBUG1 ("YP server \"%s\"removed", server->url);
*server_p = server->next;
server = server->next;
destroy_yp_server (to_go);
continue;
}
server_p = &server->next;
server = server->next;
}
/* add new server entries */
while (pending_yps)
{
avl_node *node;
server = (struct yp_server *)pending_yps;
pending_yps = server->next;
DEBUG1("Add pending yps %s", server->url);
server->next = (struct yp_server *)active_yps;
active_yps = server;
/* new YP server configured, need to populate with existing sources */
avl_tree_rlock (global.source_tree);
node = avl_get_first (global.source_tree);
while (node)
{
ypdata_t *yp;
source_t *source = node->key;
thread_rwlock_rlock (&source->lock);
if (source->yp_public && (yp = create_yp_entry (source->mount)) != NULL)
{
DEBUG1 ("Adding existing mount %s", source->mount);
yp->server = server;
yp->touch_interval = server->touch_interval;
yp->next = server->mounts;
server->mounts = yp;
}
thread_rwlock_unlock (&source->lock);
node = avl_get_next (node);
}
avl_tree_unlock (global.source_tree);
}
}
/* Add YP entries to active servers */
void yp_add (const char *mount)
{
struct yp_server *server;
/* make sure YP thread is not modifying the lists */
thread_rwlock_rlock (&yp_lock);
/* make sure we don't race against another yp_add */
thread_mutex_lock (&yp_pending_lock);
server = (struct yp_server *)active_yps;
while (server)
{
ypdata_t *yp;
/* on-demand relays may already have a YP entry */
yp = find_yp_mount (server->mounts, mount);
if (yp == NULL)
{
/* add new ypdata to each servers pending yp */
yp = create_yp_entry (mount);
if (yp)
{
DEBUG2 ("Adding %s to %s", mount, server->url);
yp->server = server;
yp->touch_interval = server->touch_interval;
yp->next = server->pending_mounts;
yp->next_update = time(NULL) + 5;
server->pending_mounts = yp;
yp_update = 1;
}
}
else
DEBUG1 ("YP entry %s already exists", mount);
server = server->next;
}
thread_mutex_unlock (&yp_pending_lock);
thread_rwlock_unlock (&yp_lock);
}