[ia64] No serial entry in inittab after serial install

This is how prebaseconfig works out whether it's running on a serial console:

# Since this script is running with debconf, 'tty' does
# not give reliable answers about what sort of terminal
# we have. The stdin of /sbin/debian-installer seems
# to tell the truth.
inst_pid=$(pidof debian-installer | cut -d" " -f1)
rawconsole=$(readlink /proc/${inst_pid}/fd/0)
console=$(mapdevfs "$rawconsole")
rawconsole=${rawconsole#/dev/}
console=${console#/dev/}

case "$console" in
ttyS*)

Do you have any ideas on how to improve this?

Here are the results of those commands:

~ # inst_pid=$(pidof debian-installer | cut -d" " -f1)
~ # echo ${inst_pid}
2003
~ # rawconsole=$(readlink /proc/${inst_pid}/fd/0)
~ # echo ${rawconsole}
/dev/console
~ # console=$(mapdevfs "$rawconsole")
~ # echo ${console}
/dev/console
~ # rawconsole=${rawconsole#/dev/}
~ # echo ${rawconsole}
console
~ # console=${console#/dev/}
~ # echo ${console}
console

Apparently SuSE uses a kernel patch that was rejected by the lkml people which creates a new ioctl called TIOCGDEV. If you're curious, look at the fetchtty code from libconsole.c in the showconsole-1.08 tarball of SuSE's sysvinit package. I believe this was one of the first postings on the subject:

   http://lkml.org/lkml/2000/12/15/160

The best my friends and I have come up with that doesn't require a kernel patch is something like the following:

grep "Adding console on ttyS" /var/log/syslog | sed -e "s/^.*console on \(.*\) at .*$/\1/"

Colin,

I finally got around to figuring how RedHat is doing this in the newer Fedora Cores and created the attached utility that prints out the serial device and baud rate using the TIOCGSERIAL ioctl.

Bryan

[Expired for finish-install (Ubuntu) because there has been no activity for 60 days.]