winsup/cygwin/libc/minires.h

   1 /* minires.h.  Stub synchronous resolver for Cygwin.
   2
   3    Written by Pierre A. Humblet <Pierre.Humblet@ieee.org>
   4
   5 This file is part of Cygwin.
   6
   7 This software is a copyrighted work licensed under the terms of the
   8 Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
   9 details. */
  10
  11 #include "winsup.h"
  12 #include <string.h>
  13 #include <malloc.h>
  14 #include <stdlib.h>
  15 #include <ctype.h>
  16 #include <sys/time.h>
  17 #include <sys/socket.h>
  18 #include <netinet/in.h>
  19 #include <arpa/inet.h>
  20 #include <errno.h>
  21 #include <fcntl.h>
  22 #include <stdio.h>
  23 #include <stdarg.h>
  24 #include <sys/unistd.h>
  25 #define  __INSIDE_CYGWIN_NET__
  26 #include <netdb.h>
  27 #include <arpa/nameser.h>
  28 #include <resolv.h>
  29
  30 extern in_addr_t cygwin_inet_addr (const char *);
  31 extern int cygwin_socket (int, int, int);
  32 extern int cygwin_bind (int, const struct sockaddr *, socklen_t);
  33 extern int cygwin_connect (int, const struct sockaddr *, socklen_t);
  34 extern int cygwin_select (int, fd_set *, fd_set *, fd_set *, struct timeval *);
  35 extern int cygwin_sendto (int, const void *, size_t, int,
  36                           const struct sockaddr *, socklen_t);
  37 extern int cygwin_recvfrom (int, void *, size_t, int, struct sockaddr *,
  38                             socklen_t *);
  39
  40 /* Number of elements is an array */
  41 #define DIM(x) (sizeof(x) / sizeof(*(x)))
  42
  43 /* Definitions to parse the messages */
  44 #define RD (1<<8) /* Offset in a short */
  45 #define RA (1<<7)
  46 #define QR (1<<7) /* Offsets in a char */
  47 #define TC (1<<1)
  48 #define ERR_MASK 0xF
  49
  50 /* Type for os specific res_lookup */
  51 typedef int (os_query_t) (res_state, const char *, int, int, u_char *, int);
  52
  53 /* Special use of state elements */
  54 #define sockfd _vcsock
  55 #define mypid _flags
  56 #define os_query qhook
  57 #define use_os pfcode
  58
  59 #define DPRINTF(cond, format...)  if (cond) minires_dprintf(format)
  60
  61 /* Utility functions */
  62 void minires_dprintf(const char * format, ...);
  63 void minires_get_search(char * string, res_state statp);
  64 void get_dns_info(res_state statp);