pub fn held_exit_dependency(
fd_directory: &Path,
) -> Result<Option<(String, &'static str)>>Expand description
The first descriptor listed in fd_directory (a /proc/<pid>/fd
directory) that would make its holder serve another guest’s exit: its name
in the directory and what it is. The in-guest runtime checks
/proc/self/fd with it before installing Detcore. A directory that cannot
be listed is an error, never a pass. Listed with
crate::util::find_in_directory: this runs inside the guest, where
std::fs::read_dir would leave the listing in the guest’s heap.