Re: [PATCH 2/2] vfs: support statx(..., NULL, AT_EMPTY_PATH, ...)

[Florian Weimer <fweimer@redhat.com>]

* Xi Ruoyao:

> Also some bad news: Glibc has this:
>
> #if (__WORDSIZE == 32 \
>      && (!defined __SYSCALL_WORDSIZE || __SYSCALL_WORDSIZE == 32)) \
>     || defined STAT_HAS_TIME32 \
>     || (!defined __NR_newfstatat && !defined __NR_fstatat64)
> # define FSTATAT_USE_STATX 1
> #else
> # define FSTATAT_USE_STATX 0
> #endif

These __NR_* constants come from the glibc headers, not the kernel
headers.  In other words, the result of the preprocessor condition does
not depend on the kernel header version.

Thanks,
Florian