static int
snpclone(struct dev_clone_args *ap)
{
int unit;
lwkt_gettoken(&tty_token);
unit = devfs_clone_bitmap_get(&DEVFS_CLONE_BITMAP(snp), 0);
ap->a_dev = make_only_dev(&snp_ops, unit, UID_ROOT, GID_WHEEL, 0600,
"snp%d", unit);
lwkt_reltoken(&tty_token);
return 0;
}
static int
ptyclone(struct dev_clone_args *ap)
{
int unit;
struct pt_ioctl *pt;
/*
* Limit the number of unix98 pty (slave) devices to 1000, as
* the utmp(5) format only allows for 8 bytes for the tty,
* "pts/XXX".
* If this limit is reached, we don't clone and return error
* to devfs.
*/
unit = devfs_clone_bitmap_get(&DEVFS_CLONE_BITMAP(pty), 1000);
if (unit < 0) {
ap->a_dev = NULL;
return 1;
}
pt = kmalloc(sizeof(*pt), M_PTY, M_WAITOK | M_ZERO);
pt->devc = make_only_dev(&ptc98_ops, unit,
ap->a_cred->cr_ruid,
0, 0600, "ptm/%d", unit);
pt->devs = make_dev(&pts98_ops, unit,
ap->a_cred->cr_ruid,
GID_TTY, 0620, "pts/%d", unit);
ap->a_dev = pt->devc;
pt->devs->si_flags |= SI_OVERRIDE; /* uid, gid, perms from dev */
pt->devc->si_flags |= SI_OVERRIDE; /* uid, gid, perms from dev */
pt->pt_tty.t_dev = pt->devs;
pt->pt_flags |= PF_UNIX98;
pt->pt_uminor = unit;
pt->devs->si_drv1 = pt->devc->si_drv1 = pt;
pt->devs->si_tty = pt->devc->si_tty = &pt->pt_tty;
ttyregister(&pt->pt_tty);
return 0;
}
