[RFC PATCH v2 1/1] cmd: nvedit: Forbid key to be empty.

[Francis Laniel]

Hi.


Le mercredi 30 juin 2021, 09:38:16 CEST Wolfgang Denk a écrit :
> Dear Francis Laniel,
> 
> In message <20210629161859.298630-2-francis.laniel at amarulasolutions.com> you 
wrote:
> > Before this patch, it was possible to do the following using setenv:
> > setenv '' foo
> > Then, on next reboot, U-Boot will not be able to parse environment due to
> > it having:
> > =foo
> > 
> > Now, if the above command is given, an error message is thrown and
> > environment is not modified.
> > 
> > Signed-off-by: Francis Laniel <francis.laniel at amarulasolutions.com>
> > ---
> > 
> >  cmd/nvedit.c | 5 +++++
> >  1 file changed, 5 insertions(+)
> > 
> > diff --git a/cmd/nvedit.c b/cmd/nvedit.c
> > index d14ba10cef..6f99a85a9c 100644
> > --- a/cmd/nvedit.c
> > +++ b/cmd/nvedit.c
> > @@ -262,6 +262,11 @@ static int _do_env_set(int flag, int argc, char
> > *const argv[], int env_flag)> 
> >  		return 1;
> >  	
> >  	}
> > 
> > +	if (*name == '\0') {
> > +		printf("## Error: variable name must no be empty\n");
> > +		return 1;
> > +	}
> > +
> > 
> >  	env_id++;
> >  	
> >  	/* Delete only ? */
> 
> Reviewed-by: Wolfgang Denk <wd at denx.de>

Thank you for the review!

> 
> Best regards,
> 
> Wolfgang Denk