Re: detection of functional openat() for usage inside getcwd.c

[Petr Salinger]

> > getcwd.c uses *at() function family iff AT_FDCWD is defined.
> > This approach does not work on GNU/kFreeBSD - FreeBSD kernel + GNU libc.
> > The kernel does not provide needed interfaces, and therefore glibc
> > provides only stub version for function from *at() family.
> > But the AT_FDCWD is declared and getcwd.c uses only native i.e. openat().
> >
> > Please, could you change detection whether really use *at() function
> > family in getcwd.
>
> Here's an untested patch.
> Please test it.
>
>         Port to GNU/kFreeBSD - FreeBSD kernel + GNU libc,
>         which has no openat syscall, yet <fcntl.h> does define AT_FDCWD.
>         * lib/getcwd.c: Undef AT_FDCWD if there is no openat function.
>         * modules/getcwd (Depends-on): Add openat.
>        Reported by Petr Salinger.

I slightly changed the patch, to be consistent with approach in lib/fts.c.
It does work for GNU/kFreeBSD.

Many thanks

Petr

getcwd.diff
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