1#define _GNU_SOURCE
 2#include <netdb.h>
 3
 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}