chown
=====

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

Gnulib module: chown

Portability problems fixed by Gnulib:

  * Some platforms fail to detect trailing slash on non-directories, as in chown("link-to-file/",uid,gid): FreeBSD 7.2, Solaris 9.

  * Some platforms fail to update the change time when at least one argument was not -1, but no ownership changes resulted: OpenBSD 4.0.

  * When passed an argument of -1, some implementations really set the owner user/group id of the file to this value, rather than leaving that id of the file alone.

  * When applied to a symbolic link, some implementations don't dereference the symlink, i.e. they behave like lchown.

  * This function is missing on some platforms; however, the replacement always fails with ENOSYS: mingw.

Portability problems not fixed by Gnulib: