nsz Git - musl/blob - src/network/res_query.c

   1 #define _GNU_SOURCE
   2 #include <resolv.h>
   3 #include <netdb.h>
   4 #include "__dns.h"
   5 #include "libc.h"
   6
   7 int res_query(const char *name, int class, int type, unsigned char *dest, int len)
   8 {
   9         if (class != 1 || len < 512)
  10                 return -1;
  11         switch(__dns_doqueries(dest, name, &type, 1)) {
  12         case EAI_NONAME:
  13                 h_errno = HOST_NOT_FOUND;
  14                 return -1;
  15         case EAI_AGAIN:
  16                 h_errno = TRY_AGAIN;
  17                 return -1;
  18         case EAI_FAIL:
  19                 h_errno = NO_RECOVERY;
  20                 return -1;
  21         }
  22         return 512;
  23 }
  24
  25 weak_alias(res_query, res_search);