AIX 5.2 and Kerberos 1.4.1 Patches

[Milton Turley]

Following are 2 patches for kerberos 1.4.1 to build on AIX 5.2.  The 
patches are for the problem of not being able to resolve the address for 
the kdc.
The #ifndef LANL and #ifdef LANL are locale compiler directives and will 
need to be changed or specifiy -D LANL in configure process.

The patch for dsnglue.c is if "thread-support" is enabled.  The patch adds 
a 1024 byte buffer after the  _res_state structure.  IBM AIX has a problem 
where 735+- bytes are overlaid when res_ninit is called.  The 1024 bytes 
pads the storage to stop res_ninit from overlaying critical storage.  Ken 
Raeburn had tried a similar patch with 72 bytes.

*** ./src/lib/krb5/os/dnsglue.c.orig    Fri Jan 14 17:10:53 2005
--- ./src/lib/krb5/os/dnsglue.c Thu May  5 11:39:52 2005
***************
*** 62,68 ****
--- 62,76 ----
                char *host, int nclass, int ntype)
  {
  #if HAVE_RES_NSEARCH
+ #ifndef LANL
      struct __res_state statbuf;
+ #else   /* LANL */
+ #ifndef _AIX
+     struct __res_state statbuf;
+ #else   /* _AIX */
+     struct { struct __res_state s; char pad[1024]; } statbuf;
+ #endif  /* AIX */
+ #endif  /* LANL */
  #endif
      struct krb5int_dns_state *ds;
      int len, ret;
The patch for locate_kdc.c is when "disable-thread-support" is set for 
configure.  Again the #ifndef LANL and #ifdef LANL is a local compiler 
directive.  This will need to be changed for local setting or -D LANL set 
for configure process.


*** ./src/lib/krb5/os/locate_kdc.c.orig Thu May  5 08:06:45 2005
--- ./src/lib/krb5/os/locate_kdc.c      Thu May  5 11:34:27 2005
***************
*** 267,275 ****
--- 267,283 ----
      memset(&hint, 0, sizeof(hint));
      hint.ai_family = family;
      hint.ai_socktype = socktype;
+ #ifndef LANL
  #ifdef AI_NUMERICSERV
      hint.ai_flags = AI_NUMERICSERV;
  #endif
+ #else   /* LANL */
+ #ifndef _AIX
+ #ifdef AI_NUMERICSERV
+     hint.ai_flags = AI_NUMERICSERV;
+ #endif
+ #endif  /* _AIX */
+ #endif  /* LANL */
      sprintf(portbuf, "%d", ntohs(port));
      sprintf(secportbuf, "%d", ntohs(secport));
      err = getaddrinfo (hostname, portbuf, &hint, &addrs);
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