getservent_r
struct servent *getservent_r(struct servent *, char *, int);
struct servent *getservent_r();
struct servent *getservent_r(struct servent *, char *, int);
struct servent *getservent_r __P((struct servent *, char *, int));
res = getservent_r(b->result, b->buffer, b->buflen);