Setting root password

Setting root password

[Jack Mitchell]

What is the best way to set the root password for an image during build
time?

I have come across this snippet:

ROOTFS_POSTPROCESS_COMMAND += " \
        sed 's%^root:[^:]*:%root:${PASSWD}:%' \
        < ${IMAGE_ROOTFS}/etc/shadow \
        > ${IMAGE_ROOTFS}/etc/shadow.new;\
        mv ${IMAGE_ROOTFS}/etc/shadow.new ${IMAGE_ROOTFS}/etc/shadow ;"

but it feels a bit hacky... is there no defined way to do this cleanly?

Cheers,
Jack.

Re: Setting root password

[Koen Kooi]

Op 11 okt. 2013, om 16:35 heeft Jack Mitchell <ml@communistcode.co.uk> het volgende geschreven:

> What is the best way to set the root password for an image during build
> time?
> 
> I have come across this snippet:
> 
> ROOTFS_POSTPROCESS_COMMAND += " \
>        sed 's%^root:[^:]*:%root:${PASSWD}:%' \
>        < ${IMAGE_ROOTFS}/etc/shadow \
>> ${IMAGE_ROOTFS}/etc/shadow.new;\
>        mv ${IMAGE_ROOTFS}/etc/shadow.new ${IMAGE_ROOTFS}/etc/shadow ;"
> 
> but it feels a bit hacky...

indeed, gnu sed has had a -i option for some years now, no needs to that intermediate file.

Re: Setting root password

[ChenQi]

On 10/11/2013 10:35 PM, Jack Mitchell wrote:
> What is the best way to set the root password for an image during build
> time?
>
> I have come across this snippet:
>
> ROOTFS_POSTPROCESS_COMMAND += " \
>          sed 's%^root:[^:]*:%root:${PASSWD}:%' \
>          < ${IMAGE_ROOTFS}/etc/shadow \
>          > ${IMAGE_ROOTFS}/etc/shadow.new;\
>          mv ${IMAGE_ROOTFS}/etc/shadow.new ${IMAGE_ROOTFS}/etc/shadow ;"
>
> but it feels a bit hacky... is there no defined way to do this cleanly?
>
> Cheers,
> Jack.
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> Openembedded-core@lists.openembedded.org
> http://lists.openembedded.org/mailman/listinfo/openembedded-core
>
>
What about using EXTRA_USERS_PARAMS?

E.g.
1. Get the encrypted password.
(One way to get the encrypted password is using openssl, of course you 
can use other methods.)
openssl passwd -1 root
$1$QauDU/Ig$KEeg.OaCLFkNwSXW4xYRu1


2. Add to local.conf the following lines. Note the '$' sign should be 
escaped.

INHERIT += "extrausers"
EXTRA_USERS_PARAMS = "usermod -p '\$1\$QauDU/Ig\$KEeg.OaCLFkNwSXW4xYRu1' root;"


Best Regards,
Chen Qi