1 #define _GNU_SOURCE 2 #include <netdb.h> 3 getservbyport(int port,const char * prots)4struct servent *getservbyport(int port, const char *prots) 5 { 6 static struct servent se; 7 static long buf[32/sizeof(long)]; 8 struct servent *res; 9 if (getservbyport_r(port, prots, &se, (void *)buf, sizeof buf, &res)) 10 return 0; 11 return &se; 12 } 13