Re: [PATCH v2 00/18] sysctl: constify sysctl ctl_tables

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On Wed, Dec 20, 2023 at 08:39:20AM +0100, Julia Lawall wrote:
> 
> 
> On Tue, 19 Dec 2023, Luis Chamberlain wrote:
> 
> > On Tue, Dec 19, 2023 at 10:21:25PM +0100, Julia Lawall wrote:
> > > > As I noted, I think this is a generically neat endeavor and so I think
> > > > it would be nice to shorthand *any* member of the struct. ctl->any.
> > > > Julia, is that possible?
> > >
> > > What do you mean by *any* member?
> >
> > I meant when any code tries to assign a new variable to any of the
> > members of the struct ctl_table *foo, so any foo->*any*
> 
> Declaring any to be an identifier metavariable would be sufficient.

Fantastic thanks!

> > > If any is an identifier typed
> > > metavariable then that would get any immediate member.  But maybe you want
> > > something like
> > >
> > > <+...ctl->any...+>
> > >
> > > that will match anything that has ctl->any as a subexpression?
> >
> > If as just an expression, then no, we really want this to be tied to
> > the data struture in question we want to modify.
> 
> What about foo->a.b?  Or maybe that doesn't occur in your structure?

We'll consider that too, good idea!

  Luis




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