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Re: [PATCH] <sys/stat.h>: Use Linux kernel UAPI header if available and useful
On Jun 06 2019, Florian Weimer <fweimer@redhat.com> wrote:
> diff --git a/sysdeps/unix/sysv/linux/statx.c b/sysdeps/unix/sysv/linux/statx.c
> index b99e30dc3e..5d634960a6 100644
> --- a/sysdeps/unix/sysv/linux/statx.c
> +++ b/sysdeps/unix/sysv/linux/statx.c
> @@ -21,6 +21,11 @@
>
> #include "statx_generic.c"
>
> +/* Ensure that the kernel headers have not changed the struct size.
> + If this ever happens, it may be necessary to introduce a new symbol
> + version. */
> +_Static_assert (sizeof (struct statx) == 256, "struct statx size changed");
Why is that needed? Isn't the point of statx that only the known parts
are filled?
Andreas.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
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