#include <dlfcn.h> #include <stdio.h> extern int found_in_mod1 (void); int found_in_mod1 (void) { return 1; } extern int found_in_mod2 (void); int found_in_mod2 (void) { return 2; } extern int test_in_mod2 (int (*mainp)(int, char **)); int test_in_mod2 (int (*mainp)(int, char **)) { int (*ifp) (void); void *p; int result = 0; /* Find function `main'. */ p = dlsym (RTLD_DEFAULT, "main"); if (p == NULL) { printf ("%s: main not found\n", __FILE__); result = 1; } else if ((int (*)(int, char **))p != mainp) { printf ("%s: wrong address returned for main\n", __FILE__); result = 1; } else printf ("%s: main correctly found\n", __FILE__); ifp = dlsym (RTLD_DEFAULT, "found_in_mod1"); if ((void *) ifp == NULL) { printf ("%s: found_in_mod1 not found\n", __FILE__); result = 1; } else if (ifp () != 1) { printf ("%s: wrong address returned for found_in_mod1\n", __FILE__); result = 1; } else printf ("%s: found_in_mod1 correctly found\n", __FILE__); ifp = dlsym (RTLD_DEFAULT, "found_in_mod2"); if ((void *) ifp == NULL) { printf ("%s: found_in_mod2 not found\n", __FILE__); result = 1; } else if (ifp () != 2) { printf ("%s: wrong address returned for found_in_mod2\n", __FILE__); result = 1; } else printf ("%s: found_in_mod2 correctly found\n", __FILE__); return result; }