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SubjectRe: [PATCH v3] tty: Set correct tty name in 'active' sysfs attribute
On 02/27/2014 12:30 PM, David Herrmann wrote:
> From: Hannes Reinecke <>
> The 'active' sysfs attribute should refer to the currently active tty
> devices the console is running on, not the currently active console. The
> console structure doesn't refer to any device in sysfs, only the tty the
> console is running on has. So we need to print out the tty names in
> 'active', not the console names.
> There is one special-case, which is tty0. If the console is directed to
> it, we want 'tty0' to show up in the file, so user-space knows that the
> messages get forwarded to the active VT. The ->device() callback would
> resolve tty0, though. Hence, treat it special and don't call into the VT
> layer to resolve it (plymouth is known to depend on it).
> Cc: Lennart Poettering <>
> Cc: Kay Sievers <>
> Cc: Greg Kroah-Hartman <>
> Cc: Jiri Slaby <>
> Signed-off-by: Werner Fink <>
> Signed-off-by: Hannes Reinecke <>
> Signed-off-by: David Herrmann <>
> ---
> v2: use cs[i]->index instead of ->index
> refactor code to avoid >80 lines
> split out sprintf("%c",...);
> Tested on my x86-64 machine.

Thanks for this.
Patch looks good.

Acked-by: Hannes Reinecke <>


Dr. Hannes Reinecke zSeries & Storage +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)
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