[Buildroot] How to login as root without password

Thomas De Schampheleire patrickdepinguin+buildroot at gmail.com
Wed Jul 31 15:11:28 UTC 2013

On Wed, Jul 31, 2013 at 5:03 PM, zhou qiang <zhouqiang.search at gmail.com> wrote:
> Hi , Thomas
> We have an internal jffs2 image making process , which requires a pure
> target from buildroot ,
> and follow the steps as below :
> (1) extract rootfs.tar to designated target directory (rootfs) , this is
> done by post-script .
> (2) Adding functional script and application to rootfs .
> (3) make a new jffs2 image
> (4)burn this image to arm board
> Of course , if extract rootfs.tar as root , everything works pretty well ,
> busybox login as root .
> But in the server , there is no root permission .
> So the issue is how to login as root without "operation of extract
> rootfs.tar as root".

What is the input to step 4, an extracted directory, or just the image?

In general, when you want to add custom elements to the rootfs, you would do:
a. 'make' in buildroot
b. copy custom files to <buildroot>/output/target
c. 'make' in buildroot again, this will create a new image
d. burn image to board

Is there a reason why you do not do it this way?

Best regards,

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