elf/loadfail.c

   1 #include <dlfcn.h>
   2 #include <error.h>
   3 #include <mcheck.h>
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6
   7 int
   8 main (void)
   9 {
  10   void *su[5];
  11   void *h;
  12   int n;
  13
  14   mtrace ();
  15
  16   if ((su[0] = dlopen ("testobj1.so", RTLD_GLOBAL | RTLD_NOW)) == NULL
  17       || (su[1] = dlopen ("testobj2.so", RTLD_GLOBAL | RTLD_NOW)) == NULL
  18       || (su[2] = dlopen ("testobj3.so", RTLD_GLOBAL | RTLD_NOW)) == NULL
  19       || (su[3] = dlopen ("testobj4.so", RTLD_GLOBAL | RTLD_NOW)) == NULL
  20       || (su[4] = dlopen ("testobj5.so", RTLD_GLOBAL | RTLD_NOW)) == NULL)
  21     error (EXIT_FAILURE, 0, "failed to load shared object: %s", dlerror ());
  22
  23   h = dlopen ("failobj.so", RTLD_GLOBAL | RTLD_NOW);
  24
  25   printf ("h = %p, %s\n", h, h == NULL ? "ok" : "fail");
  26
  27   for (n = 0; n < 5; ++n)
  28     if (dlclose (su[n]) != 0)
  29       {
  30         printf ("failed to unload su[%d]: %s\n", n, dlerror ());
  31         exit (EXIT_FAILURE);
  32       }
  33
  34   return h != NULL;
  35 }
  36
  37 extern int foo (int a);
  38 int
  39 foo (int a)
  40 {
  41   return 10;
  42 }