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|
#!/bin/sh
. /usr/share/debconf/confmodule
log() {
logger -t grub-installer "$@"
}
findfs () {
mount | grep "on /target${1%/} " | cut -d' ' -f1
}
findfstype () {
mount | grep "on /target${1%/} " | cut -d' ' -f5
}
ARCH="$(archdetect)"
case $ARCH in
i386/*)
MANUFACTURER="$(dmidecode -s system-manufacturer)"
case $MANUFACTURER in
Apple*)
# Note: depends on partman-efi to load the efivars module!
if [ -d /sys/firmware/efi ]; then
log "GRUB not yet usable on Intel-based Macs booted using EFI"
exit 1
fi
;;
esac
;;
esac
bootfs=$(findfs /boot)
[ -n "$bootfs" ] || bootfs="$(findfs /)"
if [ -z "$bootfs" ]; then
# Probably not yet mounted.
exit 0
fi
# Check for the control file to work around lvdisplay refusal to work with
# certian lvm device names.
if lvdisplay "$bootfs" | grep -q 'LV Name' 2>/dev/null || [ -e "$(dirname $bootfs)/control" ]; then
log "/boot is a lvm volume ($bootfs), cannot install grub"
exit 1
fi
bootfstype=$(findfstype /boot)
[ -n "$bootfstype" ] || bootfstype="$(findfstype /)"
if [ "$bootfstype" = "xfs" ]; then
log "/boot on xfs, unsafe to install grub"
# Check this first to allow for preseeding forcing grub to xfs.
db_get grub-installer/install_to_xfs
if [ "$RET" != true ]; then
# grub behaves erratically on xfs. If priority is such that the
# main menu is not being displayed, remove grub from the menu.
# If main menu is displayed, grub will be left on it so expert
# users can choose to use it.
db_get debconf/priority
if [ "$RET" != low ] && [ "$RET" != medium ]; then
exit 1
fi
fi
fi
db_get grub-installer/skip
if [ "$RET" = true ]; then
exit 1
fi
exit 0
|
