Changing UID GID

Changing UID GID

[Dominig ar Foll (Intel Open Source)]

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Re: Changing UID GID

[Joshua Lock]

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On Wed, 2017-02-15 at 15:43 +0100, Dominig ar Foll (Intel Open Source)
wrote:
>     Hello,
> 
>       
> 
>       in AGL project we are facing an issue as when we create new
> images
>       the UID,GID of given packages can (and does) change depending
> of
>       the build.
> 
>       This induces issues when we create partial update file using
> image
>       diffs.
> 
>       
> 
>       Could you let us know if we need to create our own solution, or
> if
>       yocto already has a model to enforce a known UID-GID on
> packages
>       coming from internal or external repo such as Open-Embedded 
>       without patching (or creating a bbappend) for each imported
> package
>       ?

You can use useradd-staticids, which will use a table of known uid/gid
rather than using the next available id.

See the docs:
http://www.yoctoproject.org/docs/latest/ref-manual/ref-manual.html#ref-
classes-useradd

and the commit which introduced the feature:
http://git.yoctoproject.org/clean/cgit.cgi/poky/commit/meta/classes/use
radd-staticids.bbclass?id=4bc6982ea60929226bcd9d206b4879dea2a3157c

Joshua

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Re: Changing UID GID

[Patrick Ohly]

On Wed, 2017-02-15 at 15:43 +0100, Dominig ar Foll (Intel Open Source)
wrote:
> Hello,
> 
> in AGL project we are facing an issue as when we create new images the
> UID,GID of given packages can (and does) change depending of the
> build.
> This induces issues when we create partial update file using image
> diffs.

Is that for partial updates with OSTree or something else?

> Could you let us know if we need to create our own solution, or if
> yocto already has a model to enforce a known UID-GID on packages
> coming from internal or external repo such as Open-Embedded  without
> patching (or creating a bbappend) for each imported package ?

There's useradd-staticids.bbclass in OE-core, see
https://github.com/ostroproject/ostro-os/blob/master/meta-ostro/conf/distro/ostro.conf#L179 for an example how that was used.

-- 
Best Regards, Patrick Ohly

The content of this message is my personal opinion only and although
I am an employee of Intel, the statements I make here in no way
represent Intel's position on the issue, nor am I authorized to speak
on behalf of Intel on this matter.

Re: Changing UID GID (thaks)

[Dominig ar Foll (Intel Open Source)]

Le 15/02/2017 à 15:57, Patrick Ohly a écrit :
>
> Is that for partial updates with OSTree or something else?
Yes we use OSTree in AGL but the issue is very similar to the one faced
by Ostro.
Thanks to Joshua and Patrick for the pointers.

-- 
Dominig ar Foll
Senior Software Architect
Intel Open Source Technology Centre