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