[yocto] Setting Default User Accounts

[Chris Tapp]

Hi Nick,

On 20 Aug 2014, at 20:13, Crast, Nicholas <Nicholas.Crast at saabsensis.com> wrote:

> All,
>  
> I am currently in the middle of a battle with yocto, trying to accomplish the following:
>  
> 1.)    Disable root user account
> 2.)    Create default user account with default password
>  
> I currently have the following a recipe:
> USERADD_PACKAGES = "${PN}"
> USERADD_PARAM_${PN} = "-d /home/nick -r -s /bin/bash nick "
>  
> In order to try to add a user account. I have this in my image recipe:
>  
> ROOTFS_POSTPROCESS_COMMAND += "set_nick_passwd;"
> set_nick_passwd() {
>    sed 's%^ nick:[^:]*:% nick:adySxRKMiPvjA:%' \
>        < ${IMAGE_ROOTFS}/etc/shadow \
>        > ${IMAGE_ROOTFS}/etc/shadow.new;
>    mv ${IMAGE_ROOTFS}/etc/shadow.new ${IMAGE_ROOTFS}/etc/shadow ;
> }
>  
> This is to edit the /etc/shadow file and insert a new (hashed) password. What I’m looking for is a cleaner way to do this. When I run bitbake I get a lot of warnings because the “nick” account is already an account on my build machine. This seems like a fairly common use case, and I think I am likely going about it wrong.
>  
> Does anybody have any advice?

I've not tried it for a new user, but I use a .bbappend to base-passwd to set a root password. Basically:

do_install_append() {
    sed -i 's/root::/root:<new-hash>:/' $(D)${datadir}/base-passwd/passwd.master
}

>  
> -Nick
> ----------------------------------------
> Nick Crast
> Associate Software Engineer
> Saab Sensis Corporation
> Phone: 315-445-5703
> Email: Nicholas.Crast at saabsensis.com
>  
> 
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--

Chris Tapp
opensource at keylevel.com
www.keylevel.com




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