Function closefp_hl

freebsd/kern/kern_descrip.c:1286–1318

}

static int
closefp_hl(struct filedesc *fdp, int fd, struct file *fp, struct thread *td,
    bool holdleaders, bool audit)
{
	int error;

	FILEDESC_XLOCK_ASSERT(fdp);

	if (holdleaders) {
		if (td->td_proc->p_fdtol != NULL) {
			/*
			 * Ask fdfree() to sleep to ensure that all relevant
			 * process leaders can be traversed in closef().
			 */
			fdp->fd_holdleaderscount++;
		} else {
			holdleaders = false;
		}
	}

	error = closefp_impl(fdp, fd, fp, td, audit);
	if (holdleaders) {
		FILEDESC_XLOCK(fdp);
		fdp->fd_holdleaderscount--;
		if (fdp->fd_holdleaderscount == 0 &&
		    fdp->fd_holdleaderswakeup != 0) {
			fdp->fd_holdleaderswakeup = 0;
			wakeup(&fdp->fd_holdleaderscount);
		}
		FILEDESC_XUNLOCK(fdp);
	}
	return (error);
}

static int
closefp(struct filedesc *fdp, int fd, struct file *fp, struct thread *td,