rpc_svc_reg(3nsl): svc_pollfd is modified too
Both xprt_register() and xprt_unregister() modifies both svc_fdset and svc_pollfd, but in the rpc_svc_reg(3nsl) man page the svc_pollfd is not mentioned. For example:
void xprt_register(const SVCXPRT *xprt); After RPC service transport handle xprt is created, it is registered with the RPC service package. This routine modifies the global variable svc_fdset (see rpc_svc_calls(3NSL)). Service implementors usually do not need this routine.
The description of both functions should be modified to note both svc_fdset and svc_pollfd.