[Buildroot] manipulating raw disk images as non-root user

[Austin S Hemmelgarn]

On 2014-08-04 13:56, Dallas Clement wrote:
> 
> On Mon, Aug 4, 2014 at 2:05 AM, Waldemar Brodkorb <wbx at openadk.org
> <mailto:wbx at openadk.org>> wrote:
> 
>     Hi Dallas,
>     Dallas Clement wrote,
> 
>     > Hi All,
>     >
>     > I am trying to figure out a way to produce a uSD card image file
>     during my
>     > build process and do it as a non-root user.  I am hoping to do
>     this from a post
>     > image script.
>     >
>     > I can create the image file with dd and partition it with parted
>     as a non-root
>     > user.  However, I have not figured out how to format, and populate
>     the image
>     > file.  Tools such as kpartx and losetup seem ideal for this
>     purpose except that
>     > they must be run as root.
>     >
>     > Does anyone know of a way to do this using qemu or fuse or related
>     tools?
> 
>     You could use genext2fs to generate a filesystem as non-root.
> 
>     Installing a bootloader as non-root would be tricky, but is
>     possible, too.
> 
>     best regards
>      Waldemar
> 
> 
> Wow!  This is perfect.  I searched all over for a tool like this. 
> Couldn't find anything.  Thanks Waldemar!  Do you know of a similar tool
> to make / populate fat partitions.  I need to work with both fat and ext2.

you can use any mkfs command as a non-root user, and for FAT you should
be able to find a fuse driver for manipulating it (or there is always
mtools).


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