Scriptlet errors during manual installation of Fedora 23

[Andrej Podzimek]

>> 	error: %prein(selinux-policy-targeted-3.13.1-157.fc23.noarch) scriptlet failed, exit status 126
>> 	Error in PREIN scriptlet in rpm package selinux-policy-targeted
>
>> How can I diagnose this? Where can I dig out the exact reason why the scriptlets are failing?
>
> Once you know a specific package that fails like that, you could query its
> scriptlets section and try to reproduce manually:
>
>    rpm -q --scripts selinux-policy-targeted
>
> At the top find the %prein section. It doesn't do much, but it may run some
> external commands.

Thanks a lot for the hint. So I tried looking at the very first package that had any failure at all (albeit nonfatal), during the initial filesystem installation. That was glibc. :-( It was a POSTIN failure.

"rpm -q --scripts glibc" tells me that "postinstall program" is set to /usr/sbin/glibc_post_upgrade.x86_64. This binary is both in the installation environment and in the sysimage (even twice, perhaps hardlinked, in /sbin and /usr/sbin).

When I chroot into the sysimage, I can run the glibc_post_upgrade.x86_64 binary just fine and its exit code is 0. Yet upon glibc (re)installation, I'm getting that non-fatal error message saying that its exit code was 126.

So the question is why glibc_post_upgrade.x86_64 can't be run by/from rpm. Does rpm try to execute the postinstall oneliner using a shell that could be missing? Executing simply "sh" in the sysimage chroot works fine though...

Could someone please point me to the sources of rpm/dnf/whatever where the "postinstall program" command gets executed? It seems that I can't reproduce the failure manually. And it's probably not worth looking into all the subsequent failures until I know more about the very first one.

Andrej