9.308 fstatat

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

Gnulib module: fstatat

Portability problems fixed by Gnulib:

• This function is missing on some platforms: glibc 2.3.6, Mac OS X 10.5, FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, HP-UX 11, IRIX 6.5, OSF/1 5.1, Cygwin 1.5.x, mingw, MSVC 9, Interix 3.5, BeOS. But the replacement function is not safe to be used in libraries and is not multithread-safe.
• On platforms where off_t is a 32-bit type, fstatat may not correctly report the size of files or block devices larger than 2 GB. (Cf. AC_SYS_LARGEFILE.)
• On some platforms, fstatat(fd,"file/",buf,flag) succeeds instead of failing with ENOTDIR. Solaris 9.
• For symlinks, when the argument ends in a slash, some platforms don't dereference the argument: Solaris 9.

Portability problems not fixed by Gnulib:

• See sys/stat.h, for general portability problems with struct stat.