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glibc  2.9
Defines | Functions
tst-dlinfo.c File Reference
#include <dlfcn.h>
#include <stdio.h>
#include <stdlib.h>
#include <error.h>
#include "../test-skeleton.c"

Go to the source code of this file.

Defines

#define TEST_FUNCTION   do_test ()
#define TRY(req, arg)

Functions

static int do_test (void)

Define Documentation

#define TEST_FUNCTION   do_test ()

Definition at line 25 of file tst-dlinfo.c.

#define TRY (   req,
  arg 
)
Value:
if (dlinfo (handle, req, arg) != 0)                                         \
    {                                                                \
      printf ("dlinfo failed for %s: %s\n", #req, dlerror ());              \
      status = 1;                                                    \
    }                                                                \
  else

Function Documentation

static int do_test ( void  ) [static]

Definition at line 28 of file tst-dlinfo.c.

{
  int status = 0;

  void *handle = dlopen ("glreflib3.so", RTLD_NOW);
  if (handle == NULL)
    error (EXIT_FAILURE, 0, "cannot load: glreflib1.so: %s", dlerror ());

#define TRY(req, arg)                                                       \
  if (dlinfo (handle, req, arg) != 0)                                       \
    {                                                                \
      printf ("dlinfo failed for %s: %s\n", #req, dlerror ());              \
      status = 1;                                                    \
    }                                                                \
  else

  struct link_map *l;
  TRY (RTLD_DI_LINKMAP, &l)
    {
      if (l != handle)
       {
         printf ("bogus link_map? %p != %p\n", l, handle);
         status = 1;
       }
    }

  char origin[8192];        /* >= PATH_MAX, in theory */
  TRY (RTLD_DI_ORIGIN, origin)
    {
      printf ("origin: %s\n", origin);
    }

  Dl_serinfo counts;
  TRY (RTLD_DI_SERINFOSIZE, &counts)
    {
      Dl_serinfo *buf = alloca (counts.dls_size);
      buf->dls_cnt = counts.dls_cnt;
      buf->dls_size = counts.dls_size;
      printf ("%u library directories\n", buf->dls_cnt);
      TRY (RTLD_DI_SERINFO, buf)
       {
         if (counts.dls_cnt != buf->dls_cnt)
           {
             printf ("??? became %u library directories\n", buf->dls_cnt);
             status = 1;
           }
         for (unsigned int i = 0; i < buf->dls_cnt; ++i)
           printf ("\t%#02x\t%s\n",
                  buf->dls_serpath[i].dls_flags,
                  buf->dls_serpath[i].dls_name);
       }
    }

  unsigned long int lmid = 0xdeadbeefUL;
  if (dlinfo (handle, RTLD_DI_LMID, &lmid) != 0)
    printf ("dlinfo refuses RTLD_DI_LMID: %s\n", dlerror ());
  else
    {
      printf ("dlinfo RTLD_DI_LMID worked? %#lx\n", lmid);
      status = lmid == 0xdeadbeefUL;
    }

#undef TRY
  dlclose (handle);

  return status;
}

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