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|
# $Id$
set_bootloader() {
print_info 1 ''
# When adding/removing supported bootloaders, do NOT forget
# to update print_warning in genkernel file as well.
case "${BOOTLOADER}" in
grub)
set_bootloader_grub
;;
grub2)
set_bootloader_grub2
;;
no)
print_info 1 "--no-bootloader set; Skipping bootloader update ..."
;;
*)
print_warning 1 "Bootloader '${BOOTLOADER}' is currently not supported; Skipping bootloader update ..."
;;
esac
}
set_bootloader_read_fstab() {
local ROOTFS=$(awk 'BEGIN{RS="((#[^\n]*)?\n)"}( $2 == "/" ) { print $1; exit }' /etc/fstab)
local BOOTFS=$(awk 'BEGIN{RS="((#[^\n]*)?\n)"}( $2 == "'${BOOTDIR}'") { print $1; exit }' /etc/fstab)
# If ${BOOTDIR} is not defined in /etc/fstab, it must be the same as /
[ -z "${BOOTFS}" ] && BOOTFS=${ROOTFS}
echo "${ROOTFS} ${BOOTFS}"
}
set_bootloader_grub2() {
local GRUB_CONF
for candidate in \
"${BOOTDIR}/grub/grub.cfg" \
"${BOOTDIR}/grub2/grub.cfg" \
; do
if [[ -e "${candidate}" ]]
then
GRUB_CONF=${candidate}
break
fi
done
if [[ -z "${GRUB_CONF}" ]]
then
print_error 1 "Error! Grub2 configuration file does not exist, please ensure grub2 is correctly setup first."
return 0
fi
print_info 1 "You can customize Grub2 parameters in /etc/default/grub."
print_info 1 "Running grub-mkconfig to create '${GRUB_CONF}' ..."
grub-mkconfig -o "${GRUB_CONF}" 2>/dev/null \
|| grub2-mkconfig -o "${GRUB_CONF}" 2>/dev/null \
|| gen_die "grub-mkconfig failed!"
isTrue "${BUILD_RAMDISK}" && sed -i 's/ro single/ro debug/' "${GRUB_CONF}"
}
set_bootloader_grub() {
local GRUB_CONF="${BOOTDIR}/grub/grub.conf"
print_info 1 "Adding kernel to '${GRUB_CONF}' ..."
if [ ! -e ${GRUB_CONF} ]
then
print_warning 1 "No ${GRUB_CONF} found, generating!"
local GRUB_BOOTFS
if [ -n "${BOOTFS}" ]
then
GRUB_BOOTFS=$BOOTFS
else
GRUB_BOOTFS=$(set_bootloader_read_fstab | cut -d' ' -f2)
fi
# Get the GRUB mapping for our device
echo "quit" | grub --batch --device-map="${TEMP}/grub.map" &>/dev/null
local GRUB_BOOT_DISK1=$(echo ${GRUB_BOOTFS} | sed -e 's#\(/dev/.\+\)[[:digit:]]\+#\1#')
local GRUB_BOOT_DISK=$(awk '{if ($2 == "'${GRUB_BOOT_DISK1}'") {gsub(/(\(|\))/, "", $1); print $1;}}' "${TEMP}/grub.map")
local GRUB_BOOT_PARTITION=$(($(echo ${GRUB_BOOTFS} | sed -e 's#/dev/.\+\([[:digit:]]?*\)#\1#') - 1))
if [ -n "${GRUB_BOOT_DISK}" -a -n "${GRUB_BOOT_PARTITION}" ]
then
# Create grub configuration directory and file if it doesn't exist.
local GRUB_CONF_DIR=$(dirname "${GRUB_CONF}")
if [ ! -d "${GRUB_CONF_DIR}" ]
then
mkdir -p "${GRUB_CONF_DIR}" \
|| gen_die "Failed to create GRUB config directory '${GRUB_CONF_DIR}'!"
fi
touch ${GRUB_CONF}
echo 'default 0' >> ${GRUB_CONF}
echo 'timeout 5' >> ${GRUB_CONF}
echo "root (${GRUB_BOOT_DISK},${GRUB_BOOT_PARTITION})" >> ${GRUB_CONF}
echo >> ${GRUB_CONF}
# Add grub configuration to grub.conf
echo "# Genkernel generated entry, see GRUB documentation for details" >> ${GRUB_CONF}
echo "title=Gentoo Linux ($KV)" >> ${GRUB_CONF}
printf "%b\n" "\tkernel /${GK_FILENAME_KERNEL} root=${GRUB_ROOTFS}" >> ${GRUB_CONF}
if isTrue "${BUILD_RAMDISK}"
then
if [ "${PAT}" -gt '4' ]
then
printf "%b\n" "\tinitrd /${GK_FILENAME_INITRAMFS}" >> ${GRUB_CONF}
fi
fi
echo >> ${GRUB_CONF}
else
print_error 1 "Error! ${BOOTDIR}/grub/grub.conf does not exist and the correct settings can not be automatically detected."
print_error 1 "Please manually create your ${BOOTDIR}/grub/grub.conf file."
fi
else
# The grub.conf already exists, so let's try to duplicate the default entry
if set_bootloader_grub_check_for_existing_entry "${GRUB_CONF}"; then
print_warning 1 "An entry was already found for a kernel/initramfs with this name; Skipping update ..."
return 0
fi
set_bootloader_grub_duplicate_default "${GRUB_CONF}"
fi
}
set_bootloader_grub_duplicate_default_replace_kernel_initrd() {
sed -r -e "/^[[:space:]]*kernel/s/kernel-[[:alnum:][:punct:]]+/${GK_FILENAME_KERNEL}/" - |
sed -r -e "/^[[:space:]]*initrd/s/init(rd|ramfs)-[[:alnum:][:punct:]]+/${GK_FILENAME_INITRAMFS}/"
}
set_bootloader_grub_check_for_existing_entry() {
local GRUB_CONF=$1
if grep -q "^[[:space:]]*kernel[[:space:]=]*.*/${GK_FILENAME_KERNEL}\([[:space:]]\|$\)" "${GRUB_CONF}" &&
grep -q "^[[:space:]]*initrd[[:space:]=]*.*/${GK_FILENAME_INITRAMFS}\([[:space:]]\|$\)" "${GRUB_CONF}"
then
return 0
fi
return 1
}
set_bootloader_grub_duplicate_default() {
local GRUB_CONF=$1
local GRUB_CONF_TMP="${GRUB_CONF}.tmp"
line_count=$(wc -l < "${GRUB_CONF}")
line_nums="$(grep -n "^title" "${GRUB_CONF}" | cut -d: -f1)"
if [ -z "${line_nums}" ]; then
print_error 1 "No current 'title' entries found in your grub.conf; Skipping update ..."
return 0
fi
line_nums="${line_nums} $((${line_count}+1))"
# Find default entry
default=$(sed -rn '/^[[:space:]]*default[[:space:]=]/s/^.*default[[:space:]=]+([[:alnum:]]+).*$/\1/p' "${GRUB_CONF}")
if [ -z "${default}" ]; then
print_warning 1 "No default entry found; Assuming 0 ..."
default=0
fi
if ! echo ${default} | grep -q '^[0-9]\+$'; then
print_error 1 "We don't support non-numeric (such as 'saved') default values; Skipping update ..."
return 0
fi
# Grub defaults are 0 based, cut is 1 based
# Figure out where the default entry lives
startstop=$(echo ${line_nums} | cut -d" " -f$((${default}+1))-$((${default}+2)))
startline=$(echo ${startstop} | cut -d" " -f1)
stopline=$(echo ${startstop} | cut -d" " -f2)
# Write out the bits before the default entry
sed -n 1,$((${startline}-1))p "${GRUB_CONF}" > "${GRUB_CONF_TMP}"
# Put in our title
echo "title=Gentoo Linux (${KV})" >> "${GRUB_CONF_TMP}"
# Pass the default entry (minus the title) through to the replacement function and pipe the output to GRUB_CONF_TMP
sed -n $((${startline}+1)),$((${stopline}-1))p "${GRUB_CONF}" | set_bootloader_grub_duplicate_default_replace_kernel_initrd >> "${GRUB_CONF_TMP}"
# Finish off with everything including the previous default entry
sed -n ${startline},${line_count}p "${GRUB_CONF}" >> "${GRUB_CONF_TMP}"
cp "${GRUB_CONF}" "${GRUB_CONF}.bak"
cp "${GRUB_CONF_TMP}" "${GRUB_CONF}"
rm "${GRUB_CONF_TMP}"
}
|
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