[PATCH V3] binder: ipc namespace support for android binder(Internet mail)

chouryzhou(周威) chouryzhou at tencent.com
Sat Nov 10 05:43:30 UTC 2018


> >
> > If IPC_NS is disabled, "current-nsporxy->ipc_ns" will also exists,  it will be a static
> > reference of "init_ipc_ns" (in ipc/msgutil.c, not defined in binder.c by me) with
> > no namespace-ization. You will get the same one in all processes, everything is
> > the same as  without this patch.
> 
> except, as far as I can tell, binder_init_ns() would never have been
> called on it so the mutex and list heads are not initialized so its
> completely broken. Am I missing something? How do those fields get
> initialized in this case?

> @@ -5832,8 +5888,12 @@ static int __init binder_init(void)
>                         goto err_init_binder_device_failed;
>         }
>
> -       return ret;
> +       ret = binder_init_ns(&init_ipc_ns);
> +       if (ret)
> +               goto err_init_namespace_failed;
>
> +       return ret;

They are initialized here.

- choury -



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