refs #975 postprocess the generated initrd

Dockerfile

@@ -33,7 +33,7 @@ RUN git clone -c http.sslVerify=false --branch ${OPENGNSYS_BRANCH} https://ognpr
     git --git-dir /tmp/ogrepo/.git log --date format:r%Y%m%d --format=%ad -1 >/tmp/opengnsys/oglive_builder/gitrelease && \
     rm -rf /tmp/ogrepo/
 
-#RUN echo 0     ## development: invalidate docker cache at this point, so that the 'COPY' below actually copies files
+## if we place the ogagent.deb and the ogbrowser.deb in the cwd, then this 'COPY .' copies them to the image
 COPY . /tmp/opengnsys/oglive_builder/
 RUN cp /tmp/opengnsys/oglive_builder/schroot.conf /tmp/opengnsys/oglive_builder/mount-defaults /etc/schroot/ && echo '' >/etc/schroot/default/nssdatabases && rm -f /etc/schroot/setup.d/*chrootname
 

chroot-tasks.py

@@ -108,10 +108,23 @@ def boottoolsInitrdGenerate (osrelease):
         os.unlink (f)
     shutil.copy ('/bin/busybox', '/usr/lib/initramfs-tools/bin')
 
+    initrd_img = f'/tmp/initrd.img-{osrelease}'
+
     os.chdir ('/tmp')
-    utils.run (['mkinitramfs', '-o', f'/tmp/initrd.img-{osrelease}', osrelease])
+    utils.run (['mkinitramfs', '-o', initrd_img, osrelease])
     shutil.copy (f'/boot/vmlinuz-{osrelease}', '/tmp/')
 
+    ## turn cpio-with-prepended-stuff into a regular cpio, see #975
+    utils.run (['unmkinitramfs', initrd_img, 'undone'])
+    os.mkdir ('undone/merged')
+    subprocess.run (['rsync -aH undone/early/* undone/main/* undone/merged/'], shell=True)
+    shutil.rmtree ('undone/early')
+    shutil.rmtree ('undone/main')
+    os.chdir ('undone/merged/')
+    subprocess.run ([f'find . |cpio -H newc -oa >{initrd_img}'], shell=True)
+    os.chdir ('/tmp')
+    shutil.rmtree ('undone')
+
 if __name__ == '__main__':
     parser = argparse.ArgumentParser()
     parser.add_argument ('--osarch',    help='OS architecture',            action='store', required=True)