title: Busybox rpm scriplets
body: <p>I am packaging with rpm for embedded device with busybox instead normal GNU system.
  When I install with busybox, it install module, but do not even try to run scriplets.
  On regular system, It runs them and fails(ofc, another version of kernel). </p>
  
  <p>Question: Where am I wrong, and how to work around it?
  Here is my spec-file:</p>
  
  <pre><code># The kernel version you are building for  
  %define kernel 3.4.0-rc6-01292-g9b8149d  
  
  # The name of the module you are supplying  
  %define modname ktgrabber  
  # The path to the module, after it is installed  
  %define modpath /lib/modules/%{kernel}/kernel/net/ipv4  
  
  # Which revision are we on  
  %define pkgrelease 1.SL  
  
  # Is this a new module, or are we replacing an existing module  
  # 1 - new module  
  # 0 - replacing an existing module  
  %define newmodule 1  
  
  # Optional - what Architecture we are building for  
  #%define thisarch ia32e  
  
  Name: kernel-module-%{modname}-%{kernel}  
  Summary: Kernel Module %{modname}  for the %{kernel} kernel  
  Version: 0.99  
  Release: 1  
  Epoch: 0  
  License: GPLv2+  
  Packager: Troy Dawson &lt;dawson@fnal.gov&gt;  
  Group: System Environment/Kernel  
  BuildRoot: %{_tmppath}/%{name}-%{version}-root  
  #Requires: /boot/vmlinux-%{kernel}, modutils  
  Provides: kernel-module-%{modname} = %{epoch}:%{version}  
  Source0: %{modname}.ko.%{kernel}  
  
  %description  
  This package provides a %{modname} kernel module for  
  kernel %{kernel}.  
  
  %install  
  mkdir -p $RPM_BUILD_ROOT/%{modpath}  
  
  %if %{newmodule}  
      install -m 644 %{SOURCE0} $RPM_BUILD_ROOT/%{modpath}/%{modname}.ko  
  %else  
      install -m 644 %{SOURCE0} $RPM_BUILD_ROOT/%{modpath}/%{modname}.%{version}.%{pkgrelease}.o  
  
  %endif  
  %pre  
  touch /root/bar  
  mkdir /alice  
  %post  
  touch /bar  
  /bin/echo %{modname} &gt;&gt; /etc/modules  
  depmod  
  mkdir /foo  
  depmod -ae %{kernel} &gt;/dev/null 2&gt;&amp;1   
  modprobe %{modname}  
  
  %postun  
  sed -i 's/^%{modname}$//g' /etc/modules  
  %if %{newmodule}  
      depmod -ae %{kernel} &gt;/dev/null 2&gt;&amp;1 || :  
  %else  
      if [ "" = "0" ] ; then  
          if ! [ -f %{modpath}/%{modname}.original.o ] ; then  
              mv %{modpath}/%{modname}.o %{modpath}/%{modname}.original.o  
          fi  
          cp -f %{modpath}/%{modname}.%{version}.%{pkgrelease}.o %{modpath}/%{modname}.o  
          depmod -ae %{kernel} &gt;/dev/null 2&gt;&amp;1 || :  
      fi  
  %endif  
  
  
  %files  
  %if %{newmodule}  
      %{modpath}/%{modname}.ko  
  %else  
      %{modpath}/%{modname}.%{version}.%{pkgrelease}.ko  
  %endif  
  </code></pre>