Re: [PATCH 04/13] staging: gasket: core: allow root access based on user namespace

[Dmitry Torokhov]

Hi Todd,

On Sun, Jul 29, 2018 at 12:37 PM Todd Poynor <toddpoynor@xxxxxxxxx> wrote:
> @@ -1064,7 +1067,8 @@ static int gasket_open(struct inode *inode, struct file *filp)
>         char task_name[TASK_COMM_LEN];
>         struct gasket_cdev_info *dev_info =
>             container_of(inode->i_cdev, struct gasket_cdev_info, cdev);
> -       int is_root = capable(CAP_SYS_ADMIN);
> +       struct pid_namespace *pid_ns = task_active_pid_ns(current);
> +       int is_root = ns_capable(pid_ns->user_ns, CAP_SYS_ADMIN);

ns_capable() returns bool, why did you make is_root an integer?

Thanks,
Dmitry