pub fn fcntl_getlk<Fd: AsFd>(fd: Fd, lock: &Flock) -> Result<Option<Flock>>Available on crate feature
process only.Expand description
fcntl(fd, F_GETLK)—Get the first lock that blocks the lock description
pointed to by the argument lock. If no such lock is found, then None is
returned.
If lock.typ is set to FlockType::Unlocked, the returned value/error is
not explicitly defined, as per POSIX, and will depend on the underlying
platform implementation.