sync_init
syncfd = sync_init(sync_iface, sync_baddr, sync_port);
extern int sync_init(const char *, const char *, u_short);
syncfd = sync_init(sync_iface, sync_baddr, sync_port);
if (sync_init(sync_iface, sync_baddr, sync_port) == -1)
extern int sync_init(const char *, const char *, u_short);