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#!/bin/sh
# Create squashfs module from a directory or a Slackware package.
# Module can then be added to liveslak/addons directory.
# By default, overwrite destination module file without asking if it pre-exists.
INTERACTIVE=NO
function help() {
cat <<EOH
-- Usage:
$(basename $0) [-i] <packagename|directory> modulename.sxz
-- Option parameters:
h : This help.
i : Interactive mode will not overwrite destination file by default.
-- Description:
The first parameter is either the full path to a Slackware package,
or else a directory.
If a packagename is supplied as first parameter, it will be installed
into a temporary directory using Slackware's "installpkg".
The content of the temporary directory will be squashed into a module
by the "squashfs" program.
If a directoryname is supplied, its content will be squashed into
a module by the "squashfs" program.
The second parameter is the full pathname of the output module
which will be created.
EOH
}
# Option parsing:
while getopts "hi" Option
do
case $Option in
h ) help; exit
;;
i ) INTERACTIVE="YES"
;;
* ) help; exit
;; # DEFAULT
esac
done
shift $(($OPTIND - 1))
# End of option parsing.
# $1 now references the first non option item supplied on the command line
# ---------------------------------------------------------------------------
# Input check:
if [ "x$1" = "x" ]; then
help
exit 1
elif [ "x$2" = "x" ]; then
help
exit 1
elif [ -f "$2" -a "$INTERACTIVE" = "YES" ]; then
read -p "-- Destination file '$2' already exists. Overwrite Y/N (y): " ANSWER
if [ "x$ANSWER" = "xN" -o "x$ANSWER" = "xn" ]; then
echo "-- Aborting now."
exit
fi
fi
# .sxz extension uses xz compression:
COMPR="xz"
if [ -d "$1" ]; then
echo "Creating .sxz from directory."
PKGDIR="$1"
else
MODEXT=$(echo "$2" |rev |cut -d'.' -f1 |rev)
case $MODEXT in
sxz) COMPR="xz" ;;
sgz) COMPR="gzip" ;;
xzm) COMPR="xz" ;;
*) echo "-- Unsupported module extension '$MODEXT'" ; exit 1 ;;
esac
echo "Creating .${MODEXT} from package."
TMPDIR=$(mktemp -t -d makesxz.XXXXXX)
PKGDIR="$TMPDIR"
if [ ! -d $PKGDIR ]; then
echo "-- Failed to create temporary directory for extraction!"
exit 1
fi
# Extract the package:
/sbin/installpkg -root $PKGDIR "$1"
if [ $? -ne 0 ]; then
echo "-- Error installing package!"
exit 1
fi
fi
mksquashfs "${PKGDIR}" "$2" -noappend -comp ${COMPR} -b 256K $3 $4 $5 $6 $7 $8 $9
if [ $? -ne 0 ]; then
echo "-- Error creating squashfs compressed module"
exit 1
fi
# If we extracted a package, clean up now:
[ ! -z "$TMPDIR" ] && rm -rf $TMPDIR
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