[systemd-devel] [PATCH] s390/getty-generator: initialize essential system terminals/consoles

Dr. Werner Fink werner at suse.de
Tue Feb 4 08:06:57 PST 2014

On Tue, Feb 04, 2014 at 02:25:06PM +0100, Lennart Poettering wrote:
> On Mon, 03.02.14 14:44, Hannes Reinecke (hare at suse.de) wrote:
> > 
> > Which raises the question: what exactly should be 'active' contain?
> > The console name (which doesn't have any equivalent in sysfs), or
> > the tty name (which has)?
> Userspace expects that /sys/class/tty/console/active refers to a valid
> tty name, and that /sys/class/tty/tty0/active refers to a valid VT tty
> name.

Even if the identifier string of tty3270.c becomes "3270/tty" it seems
that something goes wrong as in show_cons_active() of drivers/tty/tty_io.c
the name_base of the struct tty_driver is not honored.

Also on s390 the device for "3270/tty" its self is not plugged:

  systemctl list-units | grep virtual-tty | sed 's/^/  /'
  sys-devices-virtual-tty-hvc0.device       loaded active plugged   /sys/devices/virtual/tty/hvc0
  sys-devices-virtual-tty-hvc1.device       loaded active plugged   /sys/devices/virtual/tty/hvc1
  sys-devices-virtual-tty-hvc2.device       loaded active plugged   /sys/devices/virtual/tty/hvc2
  sys-devices-virtual-tty-hvc3.device       loaded active plugged   /sys/devices/virtual/tty/hvc3
  sys-devices-virtual-tty-hvc4.device       loaded active plugged   /sys/devices/virtual/tty/hvc4
  sys-devices-virtual-tty-hvc5.device       loaded active plugged   /sys/devices/virtual/tty/hvc5
  sys-devices-virtual-tty-hvc6.device       loaded active plugged   /sys/devices/virtual/tty/hvc6
  sys-devices-virtual-tty-hvc7.device       loaded active plugged   /sys/devices/virtual/tty/hvc7
  sys-devices-virtual-tty-ttysclp0.device   loaded active plugged   /sys/devices/virtual/tty/ttysclp0

as the existing directory


is not listed at least with 208.  Nevertheless the nodes are there

  ll /dev/3270/tty1 
  crw--w---- 1 root tty 227, 1 Feb  4 15:51 /dev/3270/tty1

but a `dev-3270-tty1.device' seems not to be usable.


  "Having a smoking section in a restaurant is like having
          a peeing section in a swimming pool." -- Edward Burr
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