On Mon, 13 Jun 2016 11:02:12 +0200
Didier Kryn <kryn@???> wrote:
> Le 13/06/2016 08:16, Edward Bartolo a écrit :
> > Hi,
> >
> > This is a question about implementing a minimal OS initiator. If
> > DNG's admins/mods deem this email is misplaced please delete it or
> > ignore it.
> >
> > Till now, I implemented a little OS initiator that calls "/bin/bash"
> > and then enters an infinite while loop that does nothing. The loop's
> > purpose is to prevent PID 1 from exiting.
> >
> > I would like to have my OS initiator:
> > a) initiate a terminal before launching it. /sbin/init launches six
> > such terminals tty1..tty6
> > b) prevent this terminal from closing
> > c) do some basic child process management
>
> Here's something you could try:
>
> mount -t proc proc /proc
> mount -t sysfs sys /sys
> mount -t devtmpfs dev /dev # or mount /dev as tmpfs and start
> hotplugger (udev/eudev/vdev/mdev)
> mount -t tmpfs run /run
> mknod -m 0600 /dev/console c 5 1
> mknod -m 0660 /dev/tty1 c 4 1
> while ( true )
> do
> printf 'Entering interactive shell\n'
> setsid /bin/sh -c 'exec bash </dev/tty1 >/dev/tty1 2>&1'
> done;
>
> Have fun.
> Didier
And later, when Edward makes a real PID1, everything before the line
about /dev/console comprises the first few statements of the /etc/rc
shellscript.
SteveT
Steve Litt
June 2016 featured book: Troubleshooting: Why Bother?
http://www.troubleshooters.com/twb
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Re: [DNG] Custom OS initiator. In n…
