buildextend-live: change karg embed area magic number
The coreos-installer code to use the karg embed area hasn't landed yet,
but there are shipped ISOs built with the embed area in a slightly
variant format (without the previous commit or b48e4287).  To avoid
confusion, change the magic number while we have the chance.
@@ -576,7 +576,7 @@ def generate_iso():
for i, fn in enumerate(files_with_karg_embed_areas):
offset_in_file = files_with_karg_embed_areas[fn]
offsets[i + 1] = file_offset_in_iso(isoinfo, os.path.basename(fn)) + offset_in_file
- isofh.write(struct.pack(KARGSFMT, b'corekarg', karg_embed_area_length, *offsets))
+ isofh.write(struct.pack(KARGSFMT, b'coreKarg', karg_embed_area_length, *offsets))
# Magic number + offset + length
isofh.write(struct.pack(INITRDFMT, b'coreiso+', offset, initrd_ignition_padding))
print(f'Embedded {initrd_ignition_padding} bytes Ignition config space at {offset}')
