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#!/bin/sh
# mkinitcpio - modular tool for building an init ramfs cpio image
#
# IMPORTANT: We need to keep a common base syntax here
# because some of these hooks/scripts need to run under
# the klibc shell or even busybox's ash - therefore, the
# following constraints should be enforced:
# variables should be quoted and bracketed "${SOMEVAR}"
# inline execution should be done with $() instead of backticks
# use "x${var}" = "x" to test for nulls/empty strings
# incase of embedded spaces, quote all path names and string comarpisons
#
# TODO
# hook help: help() function in install script, "-h base"
# Settings
BASEDIR=""
KERNELVERSION="$(uname -r)"
CONFIG="mkinitcpio.conf"
HOOKDIR="hooks"
INSTDIR="install"
SAVELIST=""
GENIMG=""
APPEND=""
QUIET="n"
APPNAME=$(basename "${0}")
usage ()
{
echo "${APPNAME}: usage"
echo " -c CONFIG Use CONFIG file. default: /etc/mkinitcpio.conf"
echo " -k KERNELVERSION Use KERNELVERSION. default: $(uname -r)"
echo " -s Save filelist. default: no"
echo " -b BASEDIR Use BASEDIR. default: /"
echo " -g IMAGE Generate a cpio image as IMAGE. default: no"
echo " -a Append to an existing filelist. default: no"
echo " -q Quiet output. Default: no"
echo " -h This message."
exit 1
}
while getopts 'c:k:sb:g:aqh' arg; do
case "$arg" in
c) CONFIG="$OPTARG" ;;
k) KERNELVERSION="$OPTARG" ;;
s) SAVELIST="y" ;;
b) BASEDIR="$OPTARG" ;;
g) GENIMG="$OPTARG" ;;
a) APPEND="y" ;;
q) QUIET="y" ;;
h|?) usage ;;
*) echo "invalid argument '$arg'"; usage ;;
esac
done
shift $(($OPTIND - 1))
# append a trailing / if needed
if [ "${BASEDIR:${#BASEDIR}}" == "/" ]; then
BASEDIR="${BASEDIR:0:${#BASEDIR}-1}"
fi
MODULEDIR="${BASEDIR}/lib/modules/${KERNELVERSION}"
FILELIST=${1:-"initcpio.filelist"}
if [ "x${BASEDIR}" != "x" ]; then
if [ "${BASEDIR:0:1}" != "/" ]; then
echo "base directory '${BASEDIR}' must be an absolute path"
exit 1
elif [ ! -d "${BASEDIR}" ]; then
echo "base directory '${BASEDIR}' does not exist or is not a directory"
exit 1
fi
fi
if [ ! -f "${CONFIG}" ]; then
echo "config file '${CONFIG}' cannot be found, aborting..."
exit 1
fi
source "${CONFIG}"
if [ -f "${FILELIST}" -a "x${APPEND}" == "x" ]; then
echo "destination file list '${FILELIST}' exists - remove before running"
exit 1
elif [ -f "${DESTIMG}" ]; then
echo "destination image '${DESTIMG}' exists - remove before running"
exit 1
else
touch "${FILELIST}"
fi
#parse 'global' hook, as defined in ${CONFIG}
parse_hook
for hook in $HOOKS; do
unset MODULES
unset BINARIES
unset FILES
install () { msg "${hook}: no install function..."; }
if grep "install ()" "${INSTDIR}/${hook}" /dev/null 2>&1; then
source "${INSTDIR}/${hook}"
install
parse_hook
fi
#quick test to check for existance... need a better way...
# note, this will only pick up valid run_hooks - a space is required
if grep "run_hook ()" "${HOOKDIR}/${hook}" 2>&1>/dev/null; then
add_file "${HOOKDIR}/${hook}" "/hooks/${hook}"
fi
done
if [ "${HAS_MODULES}" == "y" ]; then
add_file "${MODULEDIR}/modules.dep"
add_file "${MODULEDIR}/modules.alias"
add_file "${MODULEDIR}/modules.symbols"
fi
if [ "x$GENIMG" != "x" ]; then
if ! gen_init_cpio ${FILELIST} | gzip -9 > "${GENIMG}"; then
err "Failed to create '${GENIMG}' image" >2
fi
if [ "x${SAVELIST}" == "x" ]; then
rm ${FILELIST}
fi
fi
#vim:set ft=sh ts=4 sw=4 noet:
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