blkid: add hint about lsblk to the man page

Signed-off-by: Karel Zak <kzak@redhat.com>
login: ignore SIGXFSZ when write to lastlog

the lastlog file is huge and on systems with large UIDs, it's so huge that
it generates SIGXFSZ when the FSIZE limit is too small.

Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=1165702
Signed-off-by: Karel Zak <kzak@redhat.com>
libmount: fix lock test to use real time to sync

Signed-off-by: Karel Zak <kzak@redhat.com>
aggety: always set default serial line speed

* makes speeds table usage more robust
* don't call next_speed() for empty speeds table to avoid division by zero
* default to 9600 when port baud unspecified

Addresses: https://github.com/karelzak/util-linux/pull/131
Signed-off-by: Karel Zak <kzak@redhat.com>
agetty: dont use default speed for serial console

Serial console is used for boot messages and is pre-configured by kernel.
Previous versions of agetty didn't change its speed.
To keep the backward compatibility, detect the serial console and
don't change its speed settings if none are explicitly specified.

This treatment is similar to how the virtual consoles are handled.