[Buildroot] understanding and using buildroot

[Lionel Landwerlin]

Le jeudi 25 mars 2010 à 12:22 +0545, Ravi Kumar Kulkarni a écrit :
> Hi all,
> 
> On Wed, Mar 24, 2010 at 1:34 AM, Lionel Landwerlin
> <llandwerlin at gmail.com> wrote:
> > Le mercredi 24 mars 2010 à 00:44 +0530, Ravi Kumar Kulkarni a écrit :
> >> On Wed, Mar 24, 2010 at 12:27 AM, Paulius Zaleckas
> >> <paulius.zaleckas at gmail.com> wrote:
> >> > On 03/23/2010 07:53 PM, Ravi Kumar Kulkarni wrote:
> >> >>
> >> >> Hello everybody,
> >> >> finally after 2 weeks of struggling i managed to build buildroot!
> >> >>  i have some doubts to clarify on usage of buildroot and regarding some
> >> >> packages
> >> >> i have built buildroot jffs2 image from using daily snapshot and
> >> >> booted onto target.
> >> >> but
> >> >> a)when i get login prompt what password should i enter for a user and for
> >> >> root?
> >> >
> >> > Initially password for root is empty. Just press Enter when you get asked
> >> > for password.
> >>  i pressed enter but it is again comin back to login only.any idea wat
> >> might be wrong?
> >
> > Same problem here ... I do not
> > Boot your kernel with option init=/bin/sh, then change the root
> > password.
> >
> >>
> >> >> b)and what should be enabled to so as to login as root?
> >> >
> >
> > You can edit the /etc/inittab file to login automatically as root by
> > default on the console. Like this :
> >
> > tty0::respawn:/bin/sh # GENERIC_SERIAL
> >
> > Quite useful for people doing development on your board.
> >
> I tried the above possible options but no luck !!  :( and im getting
> out of ideas!.
> 
> this is what my console gives me when i tried to login
> 
> 
> (none) login: root
> Dec 31 17:01:01 (none) auth.info login[63]: root login on 'ttyS0'
> Dec 31 17:01:01 (none) daemon.info init: process '/sbin/getty -L ttyS0
> 115200 vt100 ' (pid 63) exited. Scheduling for restart.
> Dec 31 17:01:01 (none) daemon.info init: starting pid 64, tty
> '/dev/ttyS0': '/sbin/getty -L ttyS0 115200
> 
> 
> 
> (none) login: user
> Password:
> Dec 31 17:01:08 (none) daemon.info init: process '/sbin/
> 
> my /etc/ inittab file is shown below.
> # /etc/inittab
> #
> # Copyright (C) 2001 Erik Andersen <andersen at codepoet.org>
> #
> # Note: BusyBox init doesn't support runlevels.  The runlevels field is
> # completely ignored by BusyBox init. If you want runlevels, use
> # sysvinit.
> #
> # Format for each entry: <id>:<runlevels>:<action>:<process>
> #
> # id        == tty to run on, or empty for /dev/console
> # runlevels == ignored
> # action    == one of sysinit, respawn, askfirst, wait, and once
> # process   == program to run
> 
> # Startup the system
> null::sysinit:/bin/mount -t proc none /proc
> null::sysinit:/bin/mount -t sysfs none /sys
> null::sysinit:/bin/mount -t tmpfs -o size=64k,mode=0755 none /dev
> null::sysinit:/bin/mkdir /dev/pts
> null::sysinit:/bin/mount -t devpts devpts /dev/pts
> null::sysinit:/bin/echo /sbin/mdev > /proc/sys/kernel/hotplug
> null::sysinit:/sbin/mdev -s
> null::sysinit:/bin/mount -o remount,rw /
> null::sysinit:/bin/mount -a
> null::sysinit:/bin/hostname -F /etc/hostname
> null::sysinit:/sbin/ifconfig lo 127.0.0.1 up
> null::sysinit:/sbin/route add -net 127.0.0.0 netmask 255.0.0.0 lo
> # now run any rc scripts
> null::sysinit:/etc/init.d/rcS
> 
> # Set up a couple of getty's
> tty1::respawn:/sbin/getty 38400 tty1
> tty2::respawn:/sbin/getty 38400 tty2
> 
> 
> 
> # Put a getty on the serial port
> ttyS0::respawn:/sbin/getty -L ttyS0 115200 vt100 # GENERIC_SERIAL

Replace previous line by :

ttyS0::respawn:/bin/sh

> 
> 
> # Logging junk
> null::sysinit:/bin/touch /var/log/messages
> null::respawn:/sbin/syslogd -n
> null::respawn:/sbin/klogd -n
> tty3::respawn:/usr/bin/tail -f /var/log/messages
> 
> # Stuff to do for the 3-finger salute
> ::ctrlaltdel:/sbin/reboot
> 
> # Stuff to do before rebooting
> null::shutdown:/usr/bin/killall klogd
> null::shutdown:/usr/bin/killall syslogd
> null::shutdown:/bin/umount -a -r
> null::shutdown:/sbin/swapoff -a
> 
> any clues?
> warm regards,
> Ravi Kulkarni.