Re: [PATCH RFC v2 4/6] coredump: show supported coredump modes

[Christian Brauner <brauner@xxxxxxxxxx>]

On Fri, May 02, 2025 at 04:07:23PM +0200, Jann Horn wrote:
> On Fri, May 2, 2025 at 2:43 PM Christian Brauner <brauner@xxxxxxxxxx> wrote:
> > Allow userspace to discover what coredump modes are supported.
> >
> > Signed-off-by: Christian Brauner <brauner@xxxxxxxxxx>
> > ---
> >  fs/coredump.c | 14 ++++++++++++++
> >  1 file changed, 14 insertions(+)
> >
> > diff --git a/fs/coredump.c b/fs/coredump.c
> > index 9a6cba233db9..1c7428c23878 100644
> > --- a/fs/coredump.c
> > +++ b/fs/coredump.c
> > @@ -1217,6 +1217,13 @@ static int proc_dostring_coredump(const struct ctl_table *table, int write,
> >
> >  static const unsigned int core_file_note_size_min = CORE_FILE_NOTE_SIZE_DEFAULT;
> >  static const unsigned int core_file_note_size_max = CORE_FILE_NOTE_SIZE_MAX;
> > +static char core_modes[] = {
> > +#ifdef CONFIG_UNIX
> > +       "file\npipe\nunix"
> > +#else
> > +       "file\npipe"
> > +#endif
> > +};
> 
> Nit: You could do something like
> 
> static char core_modes[] =
> #ifdef CONFIG_UNIX
>   "unix\n"
> #endif
>   "file\npipe"
> ;

Thanks!