Re: [OE-core] How to create a directory in multiple packages?
On 12/15/20 8:24 AM, Peter Kjellerstedt wrote:
>> -Original Message-
>> From: openembedded-core@lists.openembedded.org > c...@lists.openembedded.org> On Behalf Of Mark Hatle
>> Sent: den 15 december 2020 02:02
>> To: openembedded-core@lists.openembedded.org
>> Subject: Re: [OE-core] How to create a directory in multiple packages?
>>
>> On 12/14/20 11:43 AM, Peter Kjellerstedt wrote:
>>> Say we have a recipe that creates an empty /etc/foo directory. Now we
>>> want to add a new file in that directory /etc/foo/bar and package it as
>>> ${PN}-bar. This means the creation of the /etc/foo directory is moved
>>> from the ${PN} package to the ${PN}-bar package. Is there any way to
>>> make ${PN} continue to create an empty /etc/foo, or is the only
>>> alternative to introduce an /etc/foo/.dummy and package it in ${PN}?
>>
>> try adjust the order of the PACKAGES variant. Something like:
>>
>> PACKAGES = "${PN}-bar ... ${PN}"
>>
>> FILES_${PN}-bar = "/etc/foo/bar"
>> FILES_${PN} = "/etc/foo"
>>
>> That SHOULD package the file 'bar' in -bar, and the directory in ${PN}.
>
> Unfortunately that does not work (seems bitbake is too smart). What I have
> is basically:
>
> PACKAGE_BEFORE_PN = "${PN}-bar"
> FILES_${PN} += "${sysconfdir}/foo"
> FILES_${PN}-bar = "${sysconfdir}/foo/bar"
>
> which results in the following in the spec file:
>
> %files -n foo-bar
> %defattr(-,-,-,-)
> %dir "/etc"
> %dir "/etc/foo"
> "/etc/foo/bar"
>
> There is nothing else about /etc or /etc/foo in the spec file.
Ya, there definitely should be a way to do this... If not, it will be
problematic as more or more recipes get split into smaller chunks.
> After delving into the code for at bit, I believe this is due to how
> populate_packages() works. When it handles the ${PN}-bar package and
> finds the /etc/foo/bar file, it will also mark /etc and /etc/foo as
> seen, which means they will not be added to any other package, unless
> that package has an entry for some other /etc/foo/something file, even
> if /etc/foo is explicitly listed in, e.g., FILES_${PN}.
>
> So for now, it seems we will have to resort to using a pkg_postinst_${PN}.
Big problem with pkg_postinst, the system won't be able to track
perms/owner/group for the directory and ensure they are synced like the package
manager itself can.
For RPM, I know the %dir directive can (and should be) used to do this kind of
thing, but I don't know what the equivalencies are in opkg and deb. If there is
a similar mechanism there to specify a directory (not not it's contents) then I
suspect may want to extend recipe syntax to match.
--Mark
>> (Some of the people commenting this isn't less then optimal, actually
>> it's not that unusual.. Typical case I see is creating a directory in
>> /var or /usr/share for datafiles and the main package owns the directory,
>> with sub-packages [or other packages] contributing data into that
>> directory.)
>
> Yes, there are reason why the empty directory needs to be installed as
> part of the image. Otherwise I would just have used a file in
> "/usr/lib/tmpfiles.d".
>
>> --Mark
>>
>>> //Peter
>
> //Peter
>
>
>
>
>
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Re: [OE-core] How to create a directory in multiple packages?
> -Original Message-
> From: openembedded-core@lists.openembedded.org c...@lists.openembedded.org> On Behalf Of Mark Hatle
> Sent: den 15 december 2020 02:02
> To: openembedded-core@lists.openembedded.org
> Subject: Re: [OE-core] How to create a directory in multiple packages?
>
> On 12/14/20 11:43 AM, Peter Kjellerstedt wrote:
> > Say we have a recipe that creates an empty /etc/foo directory. Now we
> > want to add a new file in that directory /etc/foo/bar and package it as
> > ${PN}-bar. This means the creation of the /etc/foo directory is moved
> > from the ${PN} package to the ${PN}-bar package. Is there any way to
> > make ${PN} continue to create an empty /etc/foo, or is the only
> > alternative to introduce an /etc/foo/.dummy and package it in ${PN}?
>
> try adjust the order of the PACKAGES variant. Something like:
>
> PACKAGES = "${PN}-bar ... ${PN}"
>
> FILES_${PN}-bar = "/etc/foo/bar"
> FILES_${PN} = "/etc/foo"
>
> That SHOULD package the file 'bar' in -bar, and the directory in ${PN}.
Unfortunately that does not work (seems bitbake is too smart). What I have
is basically:
PACKAGE_BEFORE_PN = "${PN}-bar"
FILES_${PN} += "${sysconfdir}/foo"
FILES_${PN}-bar = "${sysconfdir}/foo/bar"
which results in the following in the spec file:
%files -n foo-bar
%defattr(-,-,-,-)
%dir "/etc"
%dir "/etc/foo"
"/etc/foo/bar"
There is nothing else about /etc or /etc/foo in the spec file.
After delving into the code for at bit, I believe this is due to how
populate_packages() works. When it handles the ${PN}-bar package and
finds the /etc/foo/bar file, it will also mark /etc and /etc/foo as
seen, which means they will not be added to any other package, unless
that package has an entry for some other /etc/foo/something file, even
if /etc/foo is explicitly listed in, e.g., FILES_${PN}.
So for now, it seems we will have to resort to using a pkg_postinst_${PN}.
> (Some of the people commenting this isn't less then optimal, actually
> it's not that unusual.. Typical case I see is creating a directory in
> /var or /usr/share for datafiles and the main package owns the directory,
> with sub-packages [or other packages] contributing data into that
> directory.)
Yes, there are reason why the empty directory needs to be installed as
part of the image. Otherwise I would just have used a file in
"/usr/lib/tmpfiles.d".
> --Mark
>
> > //Peter
//Peter
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Re: [OE-core] How to create a directory in multiple packages?
On 12/14/20 11:43 AM, Peter Kjellerstedt wrote:
> Say we have a recipe that creates an empty /etc/foo directory. Now we
> want to add a new file in that directory /etc/foo/bar and package it as
> ${PN}-bar. This means the creation of the /etc/foo directory is moved
> from the ${PN} package to the ${PN}-bar package. Is there any way to
> make ${PN} continue to create an empty /etc/foo, or is the only
> alternative to introduce an /etc/foo/.dummy and package it in ${PN}?
try adjust the order of the PACKAGES variant. Something like:
PACKAGES = "${PN}-bar ... ${PN}"
FILES_${PN}-bar = "/etc/foo/bar"
FILES_${PN} = "/etc/foo"
That SHOULD package the file 'bar' in -bar, and the directory in ${PN}.
(Some of the people commenting this isn't less then optimal, actually it's not
that unusual.. Typical case I see is creating a directory in /var or /usr/share
for datafiles and the main package owns the directory, with sub-packages [or
other packages] contributing data into that directory.)
--Mark
> //Peter
>
>
>
>
>
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Re: [OE-core] How to create a directory in multiple packages?
Clearly an empty dir seems to be sub-optimal design, but if one would
need it, I'd recommend to add a pkg_postinst_${PN} script and
dynamically determine at installation time if this path needs to be
created or not.
So the dir either will be create by ${PN}-bin or by the script - I think
I've seen at a couple of times like that
On 14.12.20 18:46, Robert P. J. Day wrote:
On Mon, 14 Dec 2020, Peter Kjellerstedt wrote:
Say we have a recipe that creates an empty /etc/foo directory. Now we
want to add a new file in that directory /etc/foo/bar and package it as
${PN}-bar. This means the creation of the /etc/foo directory is moved
from the ${PN} package to the ${PN}-bar package. Is there any way to
make ${PN} continue to create an empty /etc/foo, or is the only
alternative to introduce an /etc/foo/.dummy and package it in ${PN}?
it strikes me that creating an empty directory for no other reason
than creating an empty directory is less-than-optimal design. the
proper approach is that all file installation should create
directories as needed.
rday
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Re: [OE-core] How to create a directory in multiple packages?
On Mon, 14 Dec 2020, Peter Kjellerstedt wrote:
> Say we have a recipe that creates an empty /etc/foo directory. Now we
> want to add a new file in that directory /etc/foo/bar and package it as
> ${PN}-bar. This means the creation of the /etc/foo directory is moved
> from the ${PN} package to the ${PN}-bar package. Is there any way to
> make ${PN} continue to create an empty /etc/foo, or is the only
> alternative to introduce an /etc/foo/.dummy and package it in ${PN}?
it strikes me that creating an empty directory for no other reason
than creating an empty directory is less-than-optimal design. the
proper approach is that all file installation should create
directories as needed.
rday
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