other-licenses/android/resolv_static.h

   1 /*
   2  * This version of this file is derived from Android 2.3 "Gingerbread",
   3  * which contains uncredited changes by Android/Google developers.  It has
   4  * been modified in 2011 for use in the Android build of Mozilla Firefox by
   5  * Mozilla contributors (including Michael Edwards <m.k.edwards@gmail.com>,
   6  * and Steve Workman <sjhworkman@gmail.com>).
   7  * These changes are offered under the same license as the original NetBSD
   8  * file, whose copyright and license are unchanged above.
   9  */
  10
  11 #ifndef _RESOLV_STATIC_H
  12 #define _RESOLV_STATIC_H
  13
  14 #include <netdb.h>
  15
  16 /* this structure contains all the variables that were declared
  17  * 'static' in the original NetBSD resolver code.
  18  *
  19  * this caused vast amounts of crashes and memory corruptions
  20  * when the resolver was being used by multiple threads.
  21  *
  22  * (note: the OpenBSD/FreeBSD resolver has similar 'issues')
  23  */
  24
  25 #define MAXALIASES      35
  26 #define MAXADDRS        35
  27
  28 typedef struct res_static {
  29     char*           h_addr_ptrs[MAXADDRS + 1];
  30     char*           host_aliases[MAXALIASES];
  31     char            hostbuf[8*1024];
  32     u_int32_t       host_addr[16 / sizeof(u_int32_t)];  /* IPv4 or IPv6 */
  33     FILE*           hostf;
  34     int             stayopen;
  35     const char*     servent_ptr;
  36     struct servent  servent;
  37     struct hostent  host;
  38 } *res_static;
  39
  40 extern res_static __res_get_static(void);
  41
  42 #endif /* _RESOLV_STATIC_H */