lkml.org 
[lkml]   [2020]   [Oct]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH][next] block: scsi_ioctl: Avoid the use of one-element arrays
On Fri, Oct 02, 2020 at 05:53:05PM -0600, Jens Axboe wrote:
> On 10/2/20 5:10 PM, Gustavo A. R. Silva wrote:
> > diff --git a/include/uapi/linux/cdrom.h b/include/uapi/linux/cdrom.h
> > index 2817230148fd..6c34f6e2f1f7 100644
> > --- a/include/uapi/linux/cdrom.h
> > +++ b/include/uapi/linux/cdrom.h
> > @@ -289,7 +289,10 @@ struct cdrom_generic_command
> > unsigned char data_direction;
> > int quiet;
> > int timeout;
> > - void __user *reserved[1]; /* unused, actually */
> > + union {
> > + void __user *reserved[1]; /* unused, actually */
> > + void __user *unused;
> > + };
>
> What's the point of this union, why not just turn it into
>
> void * __user *unused;
>
> ?

I just don't want to take any chances of breaking any user-space
application that, for some reason, may be considering that field.

--
Gustavo

\
 
 \ /
  Last update: 2020-10-03 01:58    [W:0.058 / U:0.416 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site