blfs-bootscripts:

This package contains the bootscripts that are mentioned in
the BLFS BOOK. The scripts cannot be installed independently
but need to be installed in conjunction with a compatible
lfs-bootscripts package. See the <lfs-bootscripts.version> file
for compatibility information.

The various install targets are mentioned in the BLFS book. There 
are variables defined for script permissions {MODE}, configuration 
file permissions {CONFMODE}, directory permissions {DIRMODE} and 
destination directory {DESTDIR}.  For more information refer to the 
BLFS BOOK at http://www.linuxfromscratch.org/blfs/ .