# License: This file is licensed under the GPL v2+
################################################################################
+# error_handler {{{
+[ -n "$REPORT_TRAP_ERR" ] || REPORT_TRAP_ERR='no'
+[ -n "$FAIL_TRAP_ERR" ] || FAIL_TRAP_ERR='no'
+
+error_handler() {
+ last_exit_code="$?"
+ last_bash_command="$BASH_COMMAND"
+ if [ "$REPORT_TRAP_ERR" = "yes" ]; then
+ echo "Unexpected non-zero exit code $last_exit_code in $BASH_SOURCE at line $BASH_LINENO detected!
+last bash command: $last_bash_command"
+ fi
+ if [ ! "$FAIL_TRAP_ERR" = "yes" ]; then
+ return
+ fi
+ ## Check if "bailout" function is available.
+ ## This is not the case in chroot-script.
+ if command -v bailout >/dev/null 2>&1; then
+ bailout 1
+ else
+ echo 'FAIL_TRAP_ERR is set to "yes", exit 1.'
+ exit 1
+ fi
+}
+
+if [ "$REPORT_TRAP_ERR" = "yes" ] || [ "$FAIL_TRAP_ERR" = "yes" ]; then
+ set -E
+ set -o pipefail
+ trap "error_handler" ERR
+ export -f "error_handler"
+fi
+# }}}
+
# variables {{{
PN="$(basename "$0")"
if [[ -d "$(dirname "$(which "$0")")"/.git ]]; then
# make sure we have what we need {{{
if [ -n "$VIRTUAL" ] ; then
- check4progs grub-mkimage kpartx mksh parted qemu-img || bailout 1
+ check4progs kpartx mksh parted qemu-img || bailout 1
fi
# }}}
bailout 1
fi
- einfo "Installing Grub as bootloader."
mount -t proc none "${MNTPOINT}"/proc
mount -t sysfs none "${MNTPOINT}"/sys
mount --bind /dev "${MNTPOINT}"/dev
mount --bind /dev/pts "${MNTPOINT}"/dev/pts
+# Has chroot-script installed GRUB to MBR using grub-install (successfully), already?
+# chroot-script skips installation for unset ${GRUB}
+if [[ -z "${GRUB}" ]] || ! dd if="${GRUB}" bs=512 count=1 2>/dev/null | cat -v | fgrep -q GRUB; then
+ einfo "Installing Grub as bootloader."
mkdir -p "${MNTPOINT}/boot/grub"
if ! [ -d "${MNTPOINT}"/usr/lib/grub/i386-pc/ ] ; then
eerror "Error: grub not installed inside Virtual Machine. Can not install bootloader." ; eend 1
chroot "${MNTPOINT}" grub-mkimage -O i386-pc -p "(hd0,msdos1)/boot/grub" -o /tmp/core.img biosdisk part_msdos ext2
dd if="${MNTPOINT}/tmp/core.img" of="${ORIG_TARGET}" conv=notrunc seek=4
rm -f "${MNTPOINT}/tmp/core.img"
+fi
einfo "Updating grub configuration file."
if [ -n "$BOOT_APPEND" ] ; then
mount --bind /dev "$MNTPOINT"/dev
mount --bind /dev/pts "$MNTPOINT"/dev/pts
if [ "$DEBUG" = "true" ] ; then
- chroot "$MNTPOINT" /bin/sh -x /bin/chroot-script ; RC=$?
+ chroot "$MNTPOINT" /bin/bash -x /bin/chroot-script ; RC=$?
else
chroot "$MNTPOINT" /bin/chroot-script ; RC=$?
fi