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

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