Function _finstall

freebsd/kern/kern_descrip.c:2058–2082

* Install a file in a file descriptor table. */

 * Install a file in a file descriptor table.
 */
void
_finstall(struct filedesc *fdp, struct file *fp, int fd, int flags,
    struct filecaps *fcaps)
{
	struct filedescent *fde;

	MPASS(fp != NULL);
	if (fcaps != NULL)
		filecaps_validate(fcaps, __func__);
	FILEDESC_XLOCK_ASSERT(fdp);

	fde = &fdp->fd_ofiles[fd];
#ifdef CAPABILITIES
	seqc_write_begin(&fde->fde_seqc);
#endif
	fde->fde_file = fp;
	fde->fde_flags = (flags & O_CLOEXEC) != 0 ? UF_EXCLOSE : 0;
	if (fcaps != NULL)
		filecaps_move(fcaps, &fde->fde_caps);
	else
		filecaps_fill(&fde->fde_caps);
#ifdef CAPABILITIES
	seqc_write_end(&fde->fde_seqc);
#endif
}

int
finstall_refed(struct thread *td, struct file *fp, int *fd, int flags,