O_CLOEXEC was introduced with the 2008 revision of POSIX.1 and it's the
only way of doing child processes safely with fork(2) in multithreaded
applications.
But we need to support pre-2008 systems, so we can't use that constant.
So let's just choose two arbitrary values for both of our constants --
we need to change both because we need to be sure that FFD_CLOEXEC won't
be the same as FFD_NONBLOCK.
Linux will probably implement them to the O_ constants, like epoll,
signalfd and inotify have done.
Change-Id: I20a5aa6e6264e7a219e19759eeb8747e01df05ff
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Reviewed-by: Rafael Roquetto <rafael.roquetto@kdab.com>
3d051d41a3