# This file contains utility functions used by rpi23-gen-image.sh cleanup (){ set +x set +e # Remove exports from nexmon unset KERNEL unset ARCH unset SUBARCH unset CCPLUGIN unset ZLIBFLATE unset Q unset NEXMON_SETUP_ENV unset HOSTUNAME unset PLATFORMUNAME # Identify and kill all processes still using files echo "killing processes using mount point ..." fuser -k "${R}" sleep 3 fuser -9 -k -v "${R}" # Clean up temporary .password file if [ -r ".password" ] ; then shred -zu .password fi # Clean up all temporary mount points echo "removing temporary mount points ..." umount -l "${R}/proc" 2> /dev/null umount -l "${R}/sys" 2> /dev/null umount -l "${R}/dev/pts" 2> /dev/null umount "$BUILDDIR/mount/boot/firmware" 2> /dev/null umount "$BUILDDIR/mount" 2> /dev/null cryptsetup close "${CRYPTFS_MAPPING}" 2> /dev/null losetup -d "$ROOT_LOOP" 2> /dev/null losetup -d "$FRMW_LOOP" 2> /dev/null trap - 0 1 2 3 6 } chroot_exec() { # Exec command in chroot LANG=C LC_ALL=C DEBIAN_FRONTEND=noninteractive chroot "${R}" "$@" } as_nobody() { # Exec command as user nobody sudo -E -u nobody LANG=C LC_ALL=C "$@" } install_readonly() { # Install file with user read-only permissions install -o root -g root -m 644 "$@" } install_exec() { # Install file with root exec permissions install -o root -g root -m 744 "$@" } use_template () { # Test if configuration template file exists if [ ! -r "./templates/${CONFIG_TEMPLATE}" ] ; then echo "error: configuration template ${CONFIG_TEMPLATE} not found" exit 1 fi # Load template configuration parameters . "./templates/${CONFIG_TEMPLATE}" } chroot_install_cc() { # Install c/c++ build environment inside the chroot if [ -z "${COMPILER_PACKAGES}" ] ; then COMPILER_PACKAGES=$(chroot_exec apt-get -s install g++ make bc | grep "^Inst " | awk -v ORS=" " '{ print $2 }') if [ "$RELEASE" = "jessie" ] || [ "$RELEASE" = "stretch" ] || [ "$RELEASE" = "buster" ] ; then chroot_exec apt-get -q -y --no-install-recommends install ${COMPILER_PACKAGES} elif [ "$RELEASE" = "stretch" ] || [ "$RELEASE" = "buster" ] ; then chroot_exec apt-get -q -y --allow-unauthenticated --no-install-recommends install ${COMPILER_PACKAGES} fi fi } chroot_remove_cc() { # Remove c/c++ build environment from the chroot if [ -n "${COMPILER_PACKAGES}" ] ; then chroot_exec apt-get -qq -y --auto-remove purge ${COMPILER_PACKAGES} COMPILER_PACKAGES="" fi } # https://serverfault.com/a/682849 - converts e.g. /24 to 255.255.255.0 cdr2mask () { # Number of args to shift, 255..255, first non-255 byte, zeroes set -- $(( 5 - ($1 / 8) )) 255 255 255 255 $(( (255 << (8 - ($1 % 8))) & 255 )) 0 0 0 [ $1 -gt 1 ] && shift $1 || shift echo ${1-0}.${2-0}.${3-0}.${4-0} } # GPL v2.0 - #https://github.com/sakaki-/bcmrpi3-kernel-bis/blob/master/conform_config.sh set_kernel_config() { # flag as $1, value to set as $2, config must exist at "./.config" TGT="CONFIG_${1#CONFIG_}" REP="${2}" if grep -q "^${TGT}[^_]" .config; then sed -i "s/^\(${TGT}=.*\|# ${TGT} is not set\)/${TGT}=${REP}/" .config else echo "${TGT}"="${2}" >> .config fi } # unset kernel config parameter unset_kernel_config() { # unsets flag with the value of $1, config must exist at "./.config" TGT="CONFIG_${1#CONFIG_}" sed -i "s/^${TGT}=.*/# ${TGT} is not set/" .config }