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

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