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Free tty struct after last close. This should fix the pty-leak by numbers.

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Remove workarounds for tty_refcount beeing 0, this will be fixed differently
later.
This commit is contained in:
Martin Blapp 2006-09-29 09:53:19 +00:00
parent e4936f3763
commit 9b206de5a0
1 changed files with 15 additions and 1 deletions
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16
sys/kern/tty_pts.c
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@ -238,6 +238,9 @@ pty_maybecleanup(struct pt_desc *pt)
if (pt->pt_ptc_open || pt->pt_pts_open)
return;
if (pt->pt_tty->t_refcnt > 1)
return;
if (bootverbose)
printf("destroying pty %d\n", pt->pt_num);
@ -245,6 +248,8 @@ pty_maybecleanup(struct pt_desc *pt)
destroy_dev(pt->pt_devc);
pt->pt_devs = pt->pt_devc = NULL;
pt->pt_tty->t_dev = NULL;
ttyrel(pt->pt_tty);
pt->pt_tty = NULL;
mtx_lock(&pt_mtx);
pty_release(pt);
@ -378,10 +383,19 @@ ptcwakeup(struct tty *tp, int flag)
static int
ptcopen(struct cdev *dev, int flag, int devtype, struct thread *td)
{
struct pt_desc *pt = dev->si_drv1;
struct pt_desc *pt;
struct tty *tp;
struct cdev *devs;
pt = dev->si_drv1;
/*
* In case we have destroyed the struct tty at the last connect time,
* we need to recreate it.
*/
if (pt->pt_tty == NULL) {
pt->pt_tty = ttyalloc();
dev->si_tty = pt->pt_tty;
}
tp = dev->si_tty;
if (tp->t_oproc)
return (EIO);