Re: Serial console on /dev/ttyS0

[Ivan Shmakov <ivan@main.uusia.org>]

>>>>> "OT" == Olof Tångrot <olof.tangrot@omicron.se> writes:

 OT> So I uncommented the following line in inittab (of the compressed
 OT> squashfs file system):

 OT> #T0=:23:respawn:/sbin/getty -L ttyS0 9600 vt100

 OT> After boot that linte in inittab mysteriously becomes:

 OT> T0:23:respawn:/bin/login -f user </dev/tty >/dev/tty 2>&1

[...]

 OT> What mechanism rebuilds inittab?

	It's the autologin mechanism that does.  And it seems that it
	assumes `tty[[:digit:]]*' as the device name, which is not the
	case for a serial console.

	The following kernel command line options may be of use:

--cut: /usr/share/doc/live-initramfs/parameters.txt --
live noautologin
live noxautologin
--cut: /usr/share/doc/live-initramfs/parameters.txt --

	OTOH, if autologin is desired, then you may wish to look at:

$ cat < /usr/share/initramfs-tools/scripts/live-bottom/25configure_init 
...
        if [ -f /root/etc/inittab ]; then
            sed -i -e "s|^\([^:]*:[^:]*:[^:]*\):.*getty.*\<\(tty[0-9]*\).*$|\1:/bin/login -f $USERNAME </dev/\2 >/dev/\2 2>\&1|" /root/etc/inittab
       fi
...
$ 

	There, the regular expression should obviously read
	...tty[A-Z]*[0-9]\+..., not ...tty[0-9]*...

	(And what's about USB to RS-232 converters, would those be
	usb/ttyUSB0 or something like that, BTW?)

 OT> How can I make a proper change to the compressed filesystem that
 OT> works as intended?

[...]

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