function centos_is_stupid { FUNCNAME="centos_is_stupid" echo "Checking for appropriate kernel version and mksquashfs version..." SQFS_VER=$(mksquashfs -version 2>&1 | head -n1 | awk '{print $3}' | sed -re 's/(^[0-9]*\.[0-9]*).*$/\1/g') KERN_VER=$(uname -r | cut -f1 -d"-") SQUASH_OPTS="-noappend -comp xz" set +e ver_check() { [ "$1" == "$2" ] && return 10 ver1front=`echo $1 | cut -d "." -f -1` ver1back=`echo $1 | cut -d "." -f 2-` ver2front=`echo $2 | cut -d "." -f -1` ver2back=`echo $2 | cut -d "." -f 2-` if [ "$ver1front" != "$1" ] || [ "$ver2front" != "$2" ]; then [ "$ver1front" -gt "$ver2front" ] && return 11 [ "$ver1front" -lt "$ver2front" ] && return 9 [ "$ver1front" == "$1" ] || [ -z "$ver1back" ] && ver1back=0 [ "$ver2front" == "$2" ] || [ -z "$ver2back" ] && ver2back=0 ver_check "$ver1back" "$ver2back" return $? else [ "$1" -gt "$2" ] && return 11 || return 9 fi } ver_check ${KERN_VER} "2.6.38" KERNTEST=${?} ver_check ${SQFS_VER} "4.2" SQFSTEST=${?} if [ ${KERNTEST} -lt "10" ]; then echo "You need a newer kernel to even think about doing this. (>= 2.6.38)" echo "If you're on CentOS, there are 3.x branches available via the elrepo repository." echo "I recommend the 'kernel-lt' package from there." echo "Bailing out." exit 1 #elif [ ${SQFS_VER} -ge "4.2" ] && [ ${KERN_VER} -ge "2.6.38" ]; elif [ ${SQFSTEST} -ge "10" ] && [ ${KERNTEST} -ge "10" ]; then #echo "Awesome; your mksquashfs (if found) is not less than v4.2." SQUASH_CMD=$(which mksquashfs) if [ ${?} != "0" ]; then echo "...Except you need to install whatever package you need to for mksquashfs." exit 1 else SQUASH_CMD=$(which mksquashfs) fi elif [ ${SQFSTEST} -lt "10" ] && [ ${KERNTEST} -ge "10" ]; then if [ ! -f ${SRCDIR}/squashfs4.2/squashfs-tools/mksquashfs ]; then echo "Boy howdy. We need to compile a custom version of the squashfs-tools because you aren't running a version that supports XZ. Give me a second." set -e mkdir -p ${SRCDIR} ${BASEDIR}/bin cd ${SRCDIR} #wget --quiet -O squashfs4.2.tar.gz "http://downloads.sourceforge.net/project/squashfs/squashfs/squashfs4.2/squashfs4.2.tar.gz?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fsquashfs%2Ffiles%2F&ts=1387047818&use_mirror=hivelocity" curl -o squashfs4.2.tar.gz "http://downloads.sourceforge.net/project/squashfs/squashfs/squashfs4.2/squashfs4.2.tar.gz?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fsquashfs%2Ffiles%2F&ts=1387047818&use_mirror=hivelocity" >> "${LOGFILE}.${FUNCNAME}" 2>&1 tar -zxf squashfs4.2.tar.gz cd squashfs4.2/squashfs-tools make clean sed -i -e 's/^#\(XZ_SUPPORT\)/\1/g' Makefile make SQUASH_CMD="${SRCDIR}/squashfs4.2/squashfs-tools/mksquashfs" else echo "Using custom-compiled mksquashfs from an earlier run." SQUASH_CMD="${SRCDIR}/squashfs4.2/squashfs-tools/mksquashfs" fi fi set -e }