[Devel] Re: [PATCH 3/3] proc: make UTS-related sysctls utsns aware

[Dave Hansen]

On Tue, 2006-05-23 at 13:23 +1200, Sam Vilain wrote:
> 
> +       /* map the filename to the pointer.  perhaps it would be
> better
> +          to put struct offset pointers in table->data ? */
> +       switch (filp->f_dentry->d_name.name[3]) {
> +               case 'y':  /* ostYpe */
> +                       which = uts_ns->name.sysname;
> +                       break;
> +               case 't':  /* hosTname */
> +                       which = uts_ns->name.nodename;
> +                       break;
> +               case 'e':  /* osrElease */
> +                       which = uts_ns->name.release;
> +                       break;
> +               case 's':  /* verSion */
> +                       which = uts_ns->name.version;
> +                       break;
> +               case 'x':  /* XXX - unreachable */
> +                       which = uts_ns->name.machine;
> +                       break;
> +               case 'a':  /* domAinname */
> +                       which = uts_ns->name.domainname;
> +                       break;
> +               default:
> +                       printk("procfs: impossible uts part '%s'",
> +                              (char*)filp->f_dentry->d_name.name);
> +                       r = -EINVAL;
> +                       goto out;
> +       } 

Why not just switch on the ->ctl_name from the table?  Wouldn't that be
easier?

-- Dave