void g_subprocess_launcher_take_fd ( GSubprocessLauncher* self, gint source_fd, gint target_fd )
Transfer an arbitrary file descriptor from parent process to the
child. This function takes ownership of the
source_fd; it will be closed
in the parent when
self is freed.
By default, all file descriptors from the parent will be closed.
This function allows you to create (for example) a custom
socketpair() before launching the process, and choose the target
descriptor in the child.
An example use case is GNUPG, which has a command line argument
--passphrase-fd providing a file descriptor number where it expects
the passphrase to be written.
Available since: 2.40