| #define _BSD_SOURCE |
| #include <resolv.h> |
| #include <netdb.h> |
| |
| int res_query(const char *name, int class, int type, unsigned char *dest, int len) |
| { |
| unsigned char q[280]; |
| int ql = __res_mkquery(0, name, class, type, 0, 0, 0, q, sizeof q); |
| if (ql < 0) return ql; |
| int r = __res_send(q, ql, dest, len); |
| if (r<12) { |
| h_errno = TRY_AGAIN; |
| return -1; |
| } |
| if ((dest[3] & 15) == 3) { |
| h_errno = HOST_NOT_FOUND; |
| return -1; |
| } |
| if ((dest[3] & 15) == 0 && !dest[6] && !dest[7]) { |
| h_errno = NO_DATA; |
| return -1; |
| } |
| return r; |
| } |
| |
| weak_alias(res_query, res_search); |
