int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
{
if (!vdso64_enabled)
return 0;
return map_vdso(&vdso_image_64, true);
}
int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
{
if (!vdso_enabled)
return 0;
#if defined CONFIG_COMPAT
if (!(is_32bit_task()))
return map_vdso(&vdso_image_64_builtin, &vdso_mapping64);
else
return map_vdso(&vdso_image_32_builtin, &vdso_mapping32);
#else
return map_vdso(&vdso_image_64_builtin, &vdso_mapping64);
#endif
}
int compat_arch_setup_additional_pages(struct linux_binprm *bprm,
int uses_interp)
{
#ifdef CONFIG_X86_X32_ABI
if (test_thread_flag(TIF_X32)) {
if (!vdso64_enabled)
return 0;
return map_vdso(&vdso_image_x32, true);
}
#endif
return load_vdso32();
}
static int load_vdso32(void)
{
int ret;
if (vdso32_enabled != 1) /* Other values all mean "disabled" */
return 0;
ret = map_vdso(selected_vdso32, false);
if (ret)
return ret;
if (selected_vdso32->sym_VDSO32_SYSENTER_RETURN)
current_thread_info()->sysenter_return =
current->mm->context.vdso +
selected_vdso32->sym_VDSO32_SYSENTER_RETURN;
return 0;
}
