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#include <dlfcn.h>
#include <errno.h>
#include <mcheck.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
int
main (void)
{
void *a;
void *b;
void *c;
void *d;
char *wd;
char *base;
char *buf;
mtrace ();
/* Change to the binary directory. */
if (chdir (OBJDIR) != 0)
{
printf ("cannot change to `%s': %m", OBJDIR);
exit (EXIT_FAILURE);
}
wd = getcwd (NULL, 0);
base = basename (wd);
buf = alloca (strlen (wd) + strlen (base) + 5 + sizeof "testobj1.so");
printf ("loading `%s'\n", "./testobj1.so");
a = dlopen ("./testobj1.so", RTLD_NOW);
if (a == NULL)
{
printf ("cannot load `./testobj1.so': %s\n", dlerror ());
exit (EXIT_FAILURE);
}
stpcpy (stpcpy (stpcpy (buf, "../"), base), "/testobj1.so");
printf ("loading `%s'\n", buf);
b = dlopen (buf, RTLD_NOW);
if (b == NULL)
{
printf ("cannot load `%s': %s\n", buf, dlerror ());
exit (EXIT_FAILURE);
}
stpcpy (stpcpy (buf, wd), "/testobj1.so");
printf ("loading `%s'\n", buf);
c = dlopen (buf, RTLD_NOW);
if (c == NULL)
{
printf ("cannot load `%s': %s\n", buf, dlerror ());
exit (EXIT_FAILURE);
}
stpcpy (stpcpy (stpcpy (stpcpy (buf, wd), "/../"), base), "/testobj1.so");
printf ("loading `%s'\n", buf);
d = dlopen (buf, RTLD_NOW);
if (d == NULL)
{
printf ("cannot load `%s': %s\n", buf, dlerror ());
exit (EXIT_FAILURE);
}
if (a != b || b != c || c != d)
{
puts ("shared object loaded more than once");
exit (EXIT_FAILURE);
}
if (dlclose (a) != 0)
{
puts ("closing `a' failed");
exit (EXIT_FAILURE);
}
if (dlclose (b) != 0)
{
puts ("closing `a' failed");
exit (EXIT_FAILURE);
}
if (dlclose (c) != 0)
{
puts ("closing `a' failed");
exit (EXIT_FAILURE);
}
if (dlclose (d) != 0)
{
puts ("closing `a' failed");
exit (EXIT_FAILURE);
}
free (wd);
return 0;
}
extern int foo (int a);
int
foo (int a)
{
return a;
}
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