On Sat, Nov 24, 2018 at 7:59 PM Willem de Bruijn
<willemdebruijn.ker...@gmail.com> wrote:
>
> On Sat, Nov 24, 2018 at 3:58 AM Deepa Dinamani <deepa.ker...@gmail.com> wrote:
> >
> > SO_TIMESTAMP, SO_TIMESTAMPNS and SO_TIMESTAMPING options, the
> > way they are currently defined, are not y2038 safe.
> > Subsequent patches in the series add new y2038 safe versions
> > of these options which provide 64 bit timestamps on all
> > architectures uniformly.
> > Hence, rename existing options with OLD tag suffixes.
>
> Why do the existing interfaces have to be renamed when new interfaces are 
> added?

Existing options need to be renamed because of the macro below:

#define SO_TIMESTAMP (sizeof(time_t) == sizeof(__kernel_long_t) ? \
            SO_TIMESTAMP_OLD : SO_TIMESTAMP_NEW)

SO_TIMESTAMP is now dependent on size of time_t because of the libc flag.

-Deepa
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