fstatat
=======

POSIX specification: http://www.opengroup.org/onlinepubs/9699919799/functions/fstatat.html

Gnulib module: openat

Portability problems fixed by Gnulib:

  * This function is missing on some platforms: glibc 2.3.6, MacOS X 10.3, FreeBSD 6.0, NetBSD 3.0, OpenBSD 3.8, AIX 5.1, HP-UX 11, IRIX 6.5, OSF/1 5.1, Cygwin 1.5.x, mingw, Interix 3.5, BeOS. But the replacement function is not safe to be used in libraries and is not multithread-safe.

Portability problems not fixed by Gnulib: