- entry = getservbyname("sunrpc", proto->p_name);
- if (entry != NULL)
- return (in_port_t)entry->s_port;
- }
- return htons((uint16_t)PMAPPORT);
+/*
+ * Look up a network service in /etc/services and return the
+ * network-order port number of that service.
+ */
+static in_port_t nfs_gp_getservbyname(const char *service,
+ const unsigned short protocol)
+{
+ const struct addrinfo gai_hint = {
+ .ai_family = AF_INET,
+ .ai_protocol = protocol,
+ .ai_flags = AI_PASSIVE,
+ };
+ struct addrinfo *gai_results;
+ const struct sockaddr_in *sin;
+ in_port_t port;
+
+ if (getaddrinfo(NULL, service, &gai_hint, &gai_results) != 0)
+ return 0;
+
+ sin = (const struct sockaddr_in *)gai_results->ai_addr;
+ port = sin->sin_port;
+
+ freeaddrinfo(gai_results);
+ return port;