Re: [PATCH v14 05/12] KEYS: Move KEY_LOOKUP_ to include/linux/key.h and set KEY_LOOKUP_FLAGS_ALL

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On Wed, Aug 31, 2022 at 08:33:38AM -0700, Alexei Starovoitov wrote:
> On Wed, Aug 31, 2022 at 2:24 AM Roberto Sassu
> <roberto.sassu@xxxxxxxxxxxxxxx> wrote:
> > > > >
> > > > > +#define KEY_LOOKUP_CREATE        0x01
> > > > > +#define KEY_LOOKUP_PARTIAL       0x02
> > > > > +#define KEY_LOOKUP_FLAGS_ALL     (KEY_LOOKUP_CREATE |
> > > > > KEY_LOOKUP_PARTIAL)
> > > >
> > > > IMHO this could be just KEY_LOOKUP_ALL.
> 
> Since this is supposed to be kernel internal flags
> please make them enum, so that bpf progs can auto-adjust
> (with the help of CORE) to changes in this enum.
> With #define there is no way for bpf prog to know
> when #define changed in the future kernels.

Isn't enum also Rust compatibility requirement, or do I remember
incorrectly? Anyway, good suggestion.

BR, Jarkko



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