:: Re: [DNG] Custom OS initiator. In n…
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Skribent: Edward Bartolo
Dato:  
Til: Didier Kryn
CC: dng
Emne: Re: [DNG] Custom OS initiator. In need of some hints...
Hi,

Many thanks for your replies especially for:
https://felipec.wordpress.com/2013/11/04/init/

Edward

On 13/06/2016, 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

>
>