usr/src/lib/libast/common/features/botch.c

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1985-2010 AT&T Intellectual Property          *
   5 *                      and is licensed under the                       *
   6 *                  Common Public License, Version 1.0                  *
   7 *                    by AT&T Intellectual Property                     *
   8 *                                                                      *
   9 *                A copy of the License is available at                 *
  10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
  11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
  12 *                                                                      *
  13 *              Information and Software Systems Research               *
  14 *                            AT&T Research                             *
  15 *                           Florham Park NJ                            *
  16 *                                                                      *
  17 *                 Glenn Fowler <gsf@research.att.com>                  *
  18 *                  David Korn <dgk@research.att.com>                   *
  19 *                   Phong Vo <kpv@research.att.com>                    *
  20 *                                                                      *
  21 ***********************************************************************/
  22 #pragma prototyped
  23 /*
  24  * Glenn Fowler
  25  * AT&T Bell Laboratories
  26  *
  27  * generate ast traps for botched standard prototypes
  28  */
  29
  30 #include <sys/types.h>
  31
  32 #include "FEATURE/lib"
  33 #include "FEATURE/sys"
  34
  35 #if _lib_getgroups
  36 extern int              getgroups(int, gid_t*);
  37 #endif
  38
  39 int
  40 main()
  41 {
  42 #if _lib_getgroups
  43         if (sizeof(int) > sizeof(gid_t))
  44         {
  45                 int     n;
  46                 int     i;
  47                 int     r;
  48                 gid_t   groups[32 * sizeof(int) / sizeof(gid_t)];
  49
  50                 r = sizeof(int) / sizeof(gid_t);
  51                 if ((n = getgroups((sizeof(groups) / sizeof(groups[0])) / r, groups)) > 0)
  52                         for (i = 1; i <= n; i++)
  53                         {
  54                                 groups[i] = ((gid_t)0);
  55                                 if (getgroups(i, groups) != i)
  56                                         goto botched;
  57                                 if (groups[i] != ((gid_t)0))
  58                                         goto botched;
  59                                 groups[i] = ((gid_t)-1);
  60                                 if (getgroups(i, groups) != i)
  61                                         goto botched;
  62                                 if (groups[i] != ((gid_t)-1))
  63                                         goto botched;
  64                         }
  65         }
  66         return 0;
  67  botched:
  68         printf("#undef  getgroups\n");
  69         printf("#define getgroups       _ast_getgroups /* implementation botches gid_t* arg */\n");
  70 #endif
  71         return 0;
  72 }