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#!/bin/bash
# Author: Tomas M. <http://www.slax.org/>
usage()
{
echo ""
echo "Convert directory to .sb compressed module"
echo "Usage: $0 [source_directory.sb] [[target_file.sb]]"
echo " If source_directory does not have .sb suffix and it is not 'squashfs-root',"
echo " then the source_directory itself is included in the module and"
echo " then the target_file.sb parameter is required."
echo " If target_file.sb is not specified, the source_directory is erased"
echo " and replaced by the newly generated module file."
}
P1="$(readlink -f "$1")"
P2="$(readlink -f "$2")"
if [ "$P1" = "$P2" ]; then
P2=""
fi
SB=$(echo "$P1" | grep -o "[.]sb/*\$")
if [ "$(echo "$P1" | grep -o "/squashfs-root/*\$")" != "" ]; then
SB="true"
fi
if [ "$SB" = "" ]; then
KEEP="-keep-as-directory"
if [ "$P2" = "" ]; then
usage
exit 1
fi
else
KEEP=""
fi
if [ ! -d "$P1" ]; then
echo "Not a directory: $P1" >&2
exit 2
fi
if [ "$P2" = "" ]; then
TARGET="$P1".sb
while [ -e "$TARGET" ]; do TARGET="$TARGET"x; done
mksquashfs "$P1" "$TARGET" -comp xz -b 1024K -always-use-fragments $KEEP >/dev/null || exit 3
umount "$P1" 2>/dev/null
rm -Rf "$P1"
mv "$TARGET" "$P1"
else
if [ -e "$P2" ]; then
echo "Target exists: $P2" >&2
exit 4
fi
mksquashfs "$P1" "$P2" -comp xz -b 1024K -always-use-fragments $KEEP >/dev/null
fi