Re: [PATCH v2 03/18] ovl: stack miscattr ops

[Al Viro]

On Wed, Mar 24, 2021 at 05:09:59AM +0000, Al Viro wrote:
> On Mon, Mar 22, 2021 at 03:49:01PM +0100, Miklos Szeredi wrote:

> Umm...  No equivalents of
>         /*  
>          * Prevent copy up if immutable and has no CAP_LINUX_IMMUTABLE
>          * capability.
>          */ 
>         ret = -EPERM;
>         if (!ovl_has_upperdata(inode) && IS_IMMUTABLE(inode) &&
>             !capable(CAP_LINUX_IMMUTABLE))
>                 goto unlock;
> 

Nevermind, you take care of that in the caller...