dlfcn/tst-dlinfo.c

   1 /* Test for dlinfo.
   2    Copyright (C) 2003 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <dlfcn.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <error.h>
  24
  25 #define TEST_FUNCTION do_test ()
  26
  27 static int
  28 do_test (void)
  29 {
  30   int status = 0;
  31
  32   void *handle = dlopen ("glreflib1.so", RTLD_NOW);
  33   if (handle == NULL)
  34     error (EXIT_FAILURE, 0, "cannot load: glreflib1.so: %s", dlerror ());
  35
  36 #define TRY(req, arg)                                                         \
  37   if (dlinfo (handle, req, arg) != 0)                                         \
  38     {                                                                         \
  39       printf ("dlinfo failed for %s: %s\n", #req, dlerror ());                \
  40       status = 1;                                                             \
  41     }                                                                         \
  42   else
  43
  44   struct link_map *l;
  45   TRY (RTLD_DI_LINKMAP, &l)
  46     {
  47       if (l != handle)
  48         {
  49           printf ("bogus link_map? %p != %p\n", l, handle);
  50           status = 1;
  51         }
  52     }
  53
  54   char origin[8192];            /* >= PATH_MAX, in theory */
  55   TRY (RTLD_DI_ORIGIN, origin)
  56     {
  57       printf ("origin: %s\n", origin);
  58     }
  59
  60   Dl_serinfo counts;
  61   TRY (RTLD_DI_SERINFOSIZE, &counts)
  62     {
  63       Dl_serinfo *buf = alloca (counts.dls_size);
  64       buf->dls_cnt = counts.dls_cnt;
  65       buf->dls_size = counts.dls_size;
  66       printf ("%u library directories\n", buf->dls_cnt);
  67       TRY (RTLD_DI_SERINFO, buf)
  68         {
  69           if (counts.dls_cnt != buf->dls_cnt)
  70             {
  71               printf ("??? became %u library directories\n", buf->dls_cnt);
  72               status = 1;
  73             }
  74           for (unsigned int i = 0; i < buf->dls_cnt; ++i)
  75             printf ("\t%#02x\t%s\n",
  76                     buf->dls_serpath[i].dls_flags,
  77                     buf->dls_serpath[i].dls_name);
  78         }
  79     }
  80
  81   unsigned long int lmid = 0xdeadbeefUL;
  82   if (dlinfo (handle, RTLD_DI_LMID, &lmid) != 0)
  83     printf ("dlinfo refuses RTLD_DI_LMID: %s\n", dlerror ());
  84   else
  85     {
  86       printf ("dlinfo RTLD_DI_LMID worked? %#lx\n", lmid);
  87       status = lmid == 0xdeadbeefUL;
  88     }
  89
  90 #undef TRY
  91   dlclose (handle);
  92
  93   return status;
  94 }
  95
  96 #include "../test-skeleton.c"