[CRIU] [RFC 1/2] tty: fix /dev/tty{1,63} minor number

[Cyrill Gorcunov]

On Wed, Apr 27, 2016 at 08:10:53PM +0300, Dmitry Safonov wrote:
> Seems like, device with TTY_MAJOR major and minor MIN_NR_CONSOLES
> is pointing to /dev/tty1 (first vitual console) and MAX_NR_CONSOLES
> is /dev/tty63.
> 
> Cc: Cyrill Gorcunov <gorcunov at openvz.org>
> Signed-off-by: Dmitry Safonov <dsafonov at virtuozzo.com>
> ---
>  criu/tty.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/criu/tty.c b/criu/tty.c
> index 68d7ba3d133b..7c634e19ebc0 100644
> --- a/criu/tty.c
> +++ b/criu/tty.c
> @@ -261,7 +261,7 @@ struct tty_driver *get_tty_driver(dev_t rdev, dev_t dev)
>  			return &ctty_driver;
>  		break;
>  	case TTY_MAJOR:
> -		if (minor > MIN_NR_CONSOLES && minor < MAX_NR_CONSOLES)
> +		if (minor >= MIN_NR_CONSOLES && minor <= MAX_NR_CONSOLES)
>  			/*
>  			 * Minors [MIN_NR_CONSOLES; MAX_NR_CONSOLES] stand
>  			 * for consoles (virtual terminals, VT in terms

Wait! IIRC MIN_NR_CONSOLES stands for 0 so it is pointing to /dev/tty
and should be treated as current tty.

[cyrill at uranus ~] stat /dev/tty
  File: ‘/dev/tty’
Device: 6h/6dInode: 1035        Links: 1     Device type: 5,0