Re: [Ltib] %post spec section not expanded in rpm

[Stuart Hughes]

Hi Alex,

I can explain what's happening here.  When you run -m scdeploy it 
fabricates an rpm spec file based on the input spec file to allow the 
files create in the install staging area to be put into the rootfs area. 
 This "fabricated" spec file does not preserve the %post sections in 
the input spec file, which explains why do don't see any output from 
your query.

Theoretically if you could (or can) run the whole command from a 
pristine state (e.g. nothing in rpm/BUILD/<pkg>) then the %post section 
would be run on the version you have (from Freescale).  However, it 
would always fail.  The reason is that if you look you'll see in the 
install commands:

sudo /opt/freescale/ltib/usr/bin/rpm --root <rootfs>

What rpm actually does is chroot to the target rootfs.  This would mean 
any commands in post would be run by busybox's /bin/sh built for 
powerpc.  Clearly this won't work on your build machine.

As I said before, %pre/%post etc are now verboten (certainly for the 
target packages).

I think what you're trying to do is to get the module loaded at boot 
time.  If this is the case, run ./ltib -m config and then navigate to:
--- Target System Configuration
        Options  --->
()  load these modules at boot

select this and enter the name of your kernel module (without the .ko 
extension IIRC).

Regards, Stuart

Badicioiu Alexandru wrote:
> Hi Stuart,
> thanks for your quick reply. 
> I checked carefully the command line for rpm when the package is installed and it doesn't contain --noscripts switch. However, in the rpm file the %post should be expanded, if not prevented somehow in rpmbuild command. I didn't find anywhere how to disable %post processing in rpmbuild. What I want to do is to build an external package which contains a kernel module and after installation onto the rootfs to execute scripts to add the module in MODLIST variable in rc.conf on target rootfs and run depmod also.
> Executing these actions in %post looked to me the way to do it.
>
> These are the commands for ltib -p bpswitch.spec -m scbuild and
> ltib -p bpswitch.spec -m scdeploy. The rpm builds and installs just fine, I 
> omitted the output.
>
> Processing: bpswitch
> ======================
> Build path taken because: build key set,
>
> rpmbuild --dbpath /home/alex/bhr/ltib-mpc8313erdb-20081222/rootfs//var/lib/rpm 
> --target ppc --define '_unpackaged_files_terminate_build 0' --define 
> '_target_cpu ppc' --define '__strip strip' --define '_topdir 
> /home/alex/bhr/ltib-mpc8313erdb-20081222/rpm' --define '_prefix /usr' --define 
> '_tmppath /home/alex/bhr/ltib-mpc8313erdb-20081222/tmp' --define '_mandir 
> /usr/share/man' --define '_sysconfdir /etc' --define '_localstatedir /var' -bc 
> --short-circuit  
> /home/alex/bhr/ltib-mpc8313erdb-20081222/dist/lfs-5.1/bpswitch/bpswitch.spec
>
> Processing: bpswitch
> ======================
> Build path taken because: build key set,
>
> rpmbuild --dbpath /home/alex/bhr/ltib-mpc8313erdb-20081222/rootfs//var/lib/rpm 
> --target ppc --define '_unpackaged_files_terminate_build 0' --define 
> '_target_cpu ppc' --define '__strip strip' --define '_topdir 
> /home/alex/bhr/ltib-mpc8313erdb-20081222/rpm' --define '_prefix /usr' --define 
> '_tmppath /home/alex/bhr/ltib-mpc8313erdb-20081222/tmp' --define '_mandir 
> /usr/share/man' --define '_sysconfdir /etc' --define '_localstatedir /var' -bi 
> --short-circuit  
> /home/alex/bhr/ltib-mpc8313erdb-20081222/dist/lfs-5.1/bpswitch/bpswitch.spec
>
> Processing: bpswitch
> ======================
> Build path taken because: build key set, spec file newer than rpm,
>
> rpmbuild --dbpath /home/alex/bhr/ltib-mpc8313erdb-20081222/rootfs//var/lib/rpm 
> --target ppc --define '_unpackaged_files_terminate_build 0' --define 
> '_target_cpu ppc' --define '__strip strip' --define '_topdir 
> /home/alex/bhr/ltib-mpc8313erdb-20081222/rpm' --define '_prefix /usr' --define 
> '_tmppath /home/alex/bhr/ltib-mpc8313erdb-20081222/tmp' --define '_mandir 
> /usr/share/man' --define '_sysconfdir /etc' --define '_localstatedir /var' -bb 
> --clean --rmsource  
> /home/alex/bhr/ltib-mpc8313erdb-20081222/rpm/SPECS/bpswitch.spec
>
> sudo /opt/freescale/ltib/usr/bin/rpm --root 
> /home/alex/bhr/ltib-mpc8313erdb-20081222/rootfs --dbpath /var/lib/rpm -e 
> --allmatches --nodeps --define '_tmppath /tmp/ltib' bpswitch 2>/dev/null
>
> sudo /opt/freescale/ltib/usr/bin/rpm --root 
> /home/alex/bhr/ltib-mpc8313erdb-20081222/rootfs --dbpath /var/lib/rpm --prefix 
> / --ignorearch -ivh --force --excludedocs --define '_tmppath /tmp/ltib' 
> /home/alex/bhr/ltib-mpc8313erdb-20081222/rpm/RPMS/ppc/bpswitch-1.0-1.ppc.rpm
> Preparing...                ########################################### [100%]
>    1:bpswitch               ########################################### [100%]
>
> --- On Fri, 6/12/09, Stuart Hughes <address@hidden> wrote:
>
> > From: Stuart Hughes <address@hidden>
> > Subject: Re: [Ltib] %post spec section not expanded in rpm
> > To: "Badicioiu Alexandru" <address@hidden>
> > Cc: address@hidden
> > Date: Friday, June 12, 2009, 3:43 AM
> > Hi Alex,
> >
> > I recently updated ltib so it adds --noscripts to the rpm
> > install/erase commands.  This has the effect of not
> > running and pre/post preun/postun scripts in the spec
> > file.  I suspect that when you query the installed
> > package these are now not recorded and so you see no
> > output.
> >
> > This is deliberate as another user correctly pointed out
> > this is a security risk.  I should also mention that
> > there are few instances where running these scripts makes
> > sense.
> >
> > What are you trying to do, maybe there's another way to do
> > this.
> >
> > Regards, Stuart
> >
> > Badicioiu Alexandru wrote:
> > > Hi, I'm trying to use %post section in an package spec
> > file, but the
> > > corresponding script is not expanded in the generated
> > rpm file. Does
> > > anybody know why it doesn't work? The spec file is the
> > one from
> > > dist/lfs-5.1/hello/hello_mod.spec with an added %post
> > section. Doing
> > > an /opt/freescale/ltib/usr/bin/rpm -qp --scripts on
> > the rpm file
> > > shows no scripts are present.
> > >
> > > Thank you.
> > >
> > >
> > >
> > >
> > >
> > >
> > > _______________________________________________ LTIB
> > home page:
> > > http://bitshrine.org
> > >
> > > Ltib mailing list address@hidden http://lists.nongnu.org/mailman/listinfo/ltib
>
>
>