C++ (Cpp) apply_gnu_relro Examples

Example #1

File: libc_init_static.cpp Project: 01org/android-bluez-bionic

__noreturn void __libc_init(void* raw_args,
                            void (*onexit)(void),
                            int (*slingshot)(int, char**, char**),
                            structors_array_t const * const structors) {
  KernelArgumentBlock args(raw_args);
  __libc_init_tls(args);
  __libc_init_common(args);

  apply_gnu_relro();

  // Several Linux ABIs don't pass the onexit pointer, and the ones that
  // do never use it.  Therefore, we ignore it.

  call_array(structors->preinit_array);
  call_array(structors->init_array);

  // The executable may have its own destructors listed in its .fini_array
  // so we need to ensure that these are called when the program exits
  // normally.
  if (structors->fini_array != NULL) {
    __cxa_atexit(__libc_fini,structors->fini_array,NULL);
  }

  exit(slingshot(args.argc, args.argv, args.envp));
}

Example #2

File: libc_init_static.c Project: sempervictus/platform_bionic

__noreturn void __libc_init(uintptr_t *elfdata,
                       void (*onexit)(void),
                       int (*slingshot)(int, char**, char**),
                       structors_array_t const * const structors)
{
    int  argc;
    char **argv, **envp;

    __libc_init_tls(NULL);

    /* Initialize the C runtime environment */
    __libc_init_common(elfdata);

    /* Several Linux ABIs don't pass the onexit pointer, and the ones that
     * do never use it.  Therefore, we ignore it.
     */

    /* pre-init array. */
    call_array(structors->preinit_array);

    // call static constructors
    call_array(structors->init_array);

    argc = (int) *elfdata;
    argv = (char**)(elfdata + 1);
    envp = argv + argc + 1;

    /* The executable may have its own destructors listed in its .fini_array
     * so we need to ensure that these are called when the program exits
     * normally.
     */
    if (structors->fini_array)
        __cxa_atexit(__libc_fini,structors->fini_array,NULL);

    apply_gnu_relro();
    exit(slingshot(argc, argv, envp));
}