On Wed, 25 Apr 2007 22:50:39 +0200, "J.A. Magallón" <[email protected]> wrote:
> On Tue, 24 Apr 2007 10:22:50 -0700, Andrew Morton <[email protected]> wrote:
>
> > On Tue, 24 Apr 2007 15:43:21 +0200 "J.A. Magallón" <[email protected]> wrote:
> >
> > > On Tue, 24 Apr 2007 04:58:01 -0700, Andrew Morton <[email protected]> wrote:
> > >
> > > > On Tue, 24 Apr 2007 10:10:41 +0200 "J.A. Magallón" <[email protected]> wrote:
> > > >
> > > > > On Sun, 8 Apr 2007 14:35:59 -0700, Andrew Morton <[email protected]> wrote:
> > > > >
> > > > > >
> > > > > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.21-rc6/2.6.21-rc6-mm1/
> > > > > >
> > > > > >
> > > > > > - Lots of x86 updates
> > > > > >
> > > > >
> > > > > Has somthing related with PTY's changed in this kernel ?
> > > >
> > > > Not as far as I know, but there were some kobject_uevent changes which
> > > > might have caused udev upcalls to break. Perhaps.
> > > >
> > > > > I have to enable legacy PTY handling in a couple boxes to get ssh working.
> > > > > If not, I had openpty() errors and nor sshd nor virtual terminals (aterm) were
> > > > > able to get a terminal.
> > > >
> > > > I have CONFIG_PM_LEGACY unset in at least one of my test configs and it
> > > > works OK here.
> > > >
> > > > > User space (udev) is the same in three boxes and one works and two fail.
> > > > > I had /dev/ptmx everywhere and /dev/pts mounted
> > > > >
> > > > > Any idea ?
> > > >
> > > > Nope. Can you please check 2.6.21-rc7-mm1, see if that fixed it? If so,
> > > > it might have been the kobject_uevent thing.
> > > >
> > >
> > > I will, thanks.
> > >
> > > A couple questions (as far as udev behaviour is sooooooo distro dependent):
> > > - What should I have in /dev if I don't use legacy ptys ? As I understand
> > > it, only /dev/ptmx and /dev/pts/*, no /dev/tty* nor /dev/pty* ?
> >
> > My FC5 CONFIG_LEGACY_PTYS=n box has no /dev/ptmx, /dev/pts/*, all of
> > /dev/tty0 through /dev/tty63 and no /dev/pty*.
> >
> > I'm not sure where all the /dev/tty*'s came from - perhaps a static udev
> > rule?
> >
>
> Uh ?
> From the Kconfig help fot UNIX98_PTYS:
>
> Linux has traditionally used the BSD-like names /dev/ptyxx for
> masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
> has a number of problems. The GNU C library glibc 2.1 and later,
> however, supports the Unix98 naming standard: in order to acquire a
> pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
> terminal is then made available to the process and the pseudo
> terminal slave can be accessed as /dev/pts/<number>. What was
> traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
>
> So if all userspace is Unix98-aware, you just would be done with
> /dev/ptmx and /dev/pts/*. In your setup it looks like you are not able
> to use Unix98 PTYs, but as udev has created tty* things work.
> Or not ?
>
> > > - If my setup, for whatever strange reasons has /dev/tty* stored anyware
> > > (/dev/.udev, links.conf...) and they get created, I supose that opening
> > > /dev/tty will give a ENODEV ?
> >
> > well, /dev/tty is attached to your current tty and /dev/tty2 will get you
> > talking to the second VT. I can't immediately thing what /dev/tty22 is
> > attached to.
> >
>
> I supposed it was something like you always opened /dev/tty but kernel+glibc
> redirect you to /dev/ttyXX, that is your _real_ terminal.
> I will try to check docs...
>
Oops, no, /dev/tty?? are for virtual consoles.
But I think I found the problem.
In short, in /dev/pts is mounted before /dev. I remounted it and ssh worked
fine again.
I'll dig mandrivas rc's to check this...
Anyways, I see no plain 'mount' command in /sbin/start_udev, all are
'mount --move' commands. So I think it supposes is already mounted and
tries to move it.
--
J.A. Magallon <jamagallon()ono!com> \ Software is like sex:
\ It's better when it's free
Mandriva Linux release 2008.0 (Cooker) for i586
Linux 2.6.20-jam10 (gcc 4.1.2 20070302 (prerelease) (4.1.2-1mdv2007.1)) #4 SMP PREEMPT
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
