lkml.org 
[lkml]   [2012]   [Jan]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] tty: cleanup prohibition of direct opening for unix98 pty master
On Tue, Jan 03, 2012 at 12:51:11PM +0400, Konstantin Khlebnikov wrote:
> cleanup hack added in v2.6.27-3203-g15582d3
>
> comment from that patch:
>
> : pty: If the administrator creates a device for a ptmx slave we should not error
> :
> : The open path for ptmx slaves is via the ptmx device. Opening them any
> : other way is not allowed. Vegard Nossum found that previously this was not
> : the case and mknod foo c 128 42; cat foo would produce nasty diagnostics
> :
> : Signed-off-by: Alan Cox <alan@redhat.com>
> : Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
>
> devpts_get_tty() returns non-null only for inodes on devpts, but there is no
> inodes for master-devices, /dev/ptmx (/dev/pts/ptmx) is the only way to open them.
> Thus we can completely forbid lookup for master-devices and eliminate that hack in
> tty_init_dev() because tty_open() will get EIO from tty_driver_lookup_tty().
>
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>

What tree did you make this patch against? I get fuzz warnings when
applying it to the tty-next branch (it's in the linux-next releases).

Please rediff it and resend it.

thanks,

greg k-h


\
 
 \ /
  Last update: 2012-01-05 01:33    [W:0.200 / U:0.036 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site