1 #include <stdio.h>

     2 #include <dlfcn.h>

     3 #include <stdlib.h>

     4 #include "dl.h"

     5 

     6 void *get_original_function(const char *soname, const char *name)

     7 {

     8     const char* error;

     9     void *handle = dlopen(soname, RTLD_LAZY);

    10     void *rc;

    11 

    12     if (!handle) {

    13 	fprintf(stderr, "dlopen on %s: %s\n", soname, dlerror());

    14 	exit(1);

    15     }

    16 

    17     dlerror();

    18     rc = dlsym(handle, name);

    19     if ((error = dlerror())) {

    20 	fprintf(stderr, "dlsym for %s: %s\n", name, error);

    21 	exit(1);

    22     }

    23     dlclose(handle);

    24 

    25     return rc;

    26 }