On Dienstag, 4. Juli 2017 19:05:25 CEST Pantelis Antoniou wrote:
> Hi Marek,
> 
> On Sat, 2017-07-01 at 16:11 +0200, Marek Vasut wrote:
> > On 06/30/2017 06:23 PM, Pantelis Antoniou wrote:
> > > Introduce an overlay based method for constructing a base DT blob
> > > to pass to the kernel.
> > > 
> > > Both canned and runtime feature selection is supported.
> > > 
> > > Signed-off-by: Pantelis Antoniou <pantelis.anton...@konsulko.com>
> > 
> > [...]
> > 
> > > @@ -1475,29 +1482,58 @@ int fit_conf_get_node(const void *fit, const
> > > char *conf_uname)> > 
> > >           debug("Found default configuration: '%s'\n", conf_uname);
> > >   
> > >   }
> > > 
> > > + s = strchr(conf_uname, '#');
> > > + if (s) {
> > > +         len = s - conf_uname;
> > > +         conf_uname_copy = malloc(len + 1);
> > > +         if (!conf_uname_copy) {
> > > +                 debug("Can't allocate uname copy: '%s'\n",
> > > +                                 conf_uname);
> > > +                 return -ENOMEM;
> > > +         }
> > > +         memcpy(conf_uname_copy, conf_uname, len);
> > 
> > Is that like strdup() here ?
> 
> No. The space allocated is not the full string, just the span until the
> next #.

You could use strndup() to copy only the first n characters.
 
> > > +         conf_uname_copy[len] = '\0';
> > > +         conf_uname = conf_uname_copy;
> > > + }
> > > +
> > > 
> > >   noffset = fdt_subnode_offset(fit, confs_noffset, conf_uname);
> > >   if (noffset < 0) {
> > >   
> > >           debug("Can't get node offset for configuration unit name: '%s'
> > >           (%s)\n",
> > >           
> > >                 conf_uname, fdt_strerror(noffset));
> > >   
> > >   }
> > > 
> > > + if (conf_uname_copy)

No need for a null ptr check, IIRC.

> > > +         free(conf_uname_copy);
> > > +
> > > 
> > >   return noffset;
> > >  
> > >  }
> > 
> > [...]
> 
> Regards
> 
> -- Pantelis
> 
> 
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