opensde-nopast/target/share/initramfs/build.sh

# --- SDE-COPYRIGHT-NOTE-BEGIN ---
# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
# 
# Filename: target/share/initramfs/build.sh
# Copyright (C) 2007 The OpenSDE Project
# 
# More information can be found in the files COPYING and README.
# 
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License. A copy of the
# GNU General Public License can be found in the file COPYING.
# --- SDE-COPYRIGHT-NOTE-END ---

#Description: Initial ramfs image (cpio.gz) 

initrddir="$build_toolchain/initrd"

rm -rf "$initrddir"
mkdir -p "$initrddir"

INITRD_POSTFLIST_HOOK=

INITRD_FLIST_PACKAGES=
INITRD_FLIST_PATTERN="-e '/\.\(h\|o\|a\|a\..*\|la\|pc\)$/d;' -e '/ usr\/share\/\(doc\|info\|man\)\//d;'"
INITRD_EMPTY_PATTERN="-e '/\.\/lib\/udev\/devices\//d;'"

# weak function, should this package be extracted by flist or not?
initrd_flist_install_filter() { true; }

# source target specific code
#
if [ -f target/$target/build-initramfs.in ]; then
	. target/$target/build-initramfs.in
fi

# install what was flisted for stage 1 packages, use $INITRD_FLIST_PATTERN to skip files
#
if [ -z "$INITRD_FLIST_PACKAGES" ]; then
	INITRD_FLIST_PACKAGES=$( grep '^X .1' $base/config/$config/packages | cut -d' ' -f5 | tr '\n' ' ' )
fi

echo_status "Populating ${initrddir#$base/} ..."
for pkg_name in $INITRD_FLIST_PACKAGES; do
	if initrd_flist_install_filter $pkg_name; then
		echo_status "- $pkg_name"
		flist="build/${SDECFG_ID}/var/adm/flists/$pkg_name"

		eval "sed -e '/ var\/adm/ d;' $INITRD_FLIST_PATTERN '$flist'" | cut -f2- -d' ' |
			tar -C "build/${SDECFG_ID}/" -cf- --no-recursion --files-from=- |
			tar -C "$initrddir" -xf-
	fi
done

# hook
#
[ -z "$INITRD_POSTFLIST_HOOK" ] || eval "$INITRD_POSTFLIST_HOOK"

if [ -r "target/$target/init.sh" ]; then
	echo_status "Copying target's /init script."
	cp "target/$target/init.sh" "${initrddir}/init"
	chmod +x "${initrddir}/init"
fi

# remove empty folder, use $INITRD_EMPTY_PATTERN to skip folders
#
echo_status "Removing empty folders ..."
( cd "$initrddir"; find . -type d ) | tac | eval "sed -e '/\.\/\(dev\|sys\|proc\|mnt\|tmp\)\$/d;' $INITRD_EMPTY_PATTERN" | while read folder; do
	count=$( find "${initrddir}/$folder" | wc -l )

	if [ $count -eq 1 ]; then
		rm -r "${initrddir}/$folder"
	#	echo_status "- ${folder} deleted."
	fi
done

# sanity check
[ -x "${initrddir}/init" ] || echo_warning "This image is missing an /init file, it wont run."
for x in ${initrddir}/{,usr/}{sbin,bin}/* ${initrddir}/init ${initrddir}/lib/udev/*; do
	[ -e "$x" ] || continue

	signature="$( file "$x" 2> /dev/null | cut -d' ' -f2- )"

	case "$signature" in
		directory)	continue ;;
		ASCII\ English\ text)
				continue ;;
		*symbolic*|*statically*|*shell*)
				continue ;;
	esac

	echo_warning "evil signature ($signature) on '${x#$initrddir}'."
done

echo_status "Expanded size: $( du -sh "$initrddir" | cut -f1)."

echo_status "Creating ${initrddir#$base/}.img ..."
( cd "$initrddir"; find * | cpio -o -H newc ) |
	gzip -c -9 > "$initrddir.img"

echo_status "Image size: $( du -sh "$initrddir.img" | cut -f1)."