[Buildroot] Changing permission recursively

Baruch Siach baruch at tkos.co.il
Fri Mar 13 10:27:41 UTC 2015


Hi Thomas, Angelo,

On Fri, Mar 13, 2015 at 07:46:03AM +0100, Angelo Compagnucci wrote:
> 2015-03-13 7:31 GMT+01:00 Thomas Petazzoni
> <thomas.petazzoni at free-electrons.com>:
> > On Thu, 12 Mar 2015 19:55:28 +0200, Baruch Siach wrote:
> >
> >> How about running the following from a post build script (untested):
> >>
> >>       ${HOST_DIR}/usr/bin/fakeroot -- chown -R UID:GID ${1}/path/to/directory
> >
> > Does this actually works ?
> >
> > My understanding of fakeroot is that you have to execute all the
> > fakeroot'ed commands under the same fakeroot invocation for the changes
> > made by these commands to actually have an effect.

Right. I forgot that.

> Fakeroot environment is not kept between invocations. You should use
> -i and -s options of fakeroot command if you want to save/restore
> permissions between invocations.
> We should provide a path for the savefile in buildroot to handle this
> scenario, but from my trials, maintaining consistent such file file is
> quite challenging.

Another options is to simply cat a user provided script into 
$(FAKEROOT_SCRIPT) as part of the rootfs image generation at fs/common.mk.

baruch

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