Initial commit

2025-10-26 18:06:53 +01:00
commit 05d538e677
85 changed files with 6639 additions and 0 deletions
--- a/functions.sh
+++ b/functions.sh
@@ -0,0 +1,121 @@
+# 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" = "trixie" ] || [ "$RELEASE" = "bullseye" ] || [ "$RELEASE" = "bookworm" ] ; then
+#      chroot_exec apt-get -q -y --no-install-recommends install ${COMPILER_PACKAGES}
+#    elif [ "$RELEASE" = "bullseye" ] || [ "$RELEASE" = "bookworm" ] || [ "$RELEASE" = "bookworm" ]; 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
+}