Sysupgrade extras

• This instruction extends the functionality of Sysupgrade on x86 target.
• Follow the automated section for quick setup.

• Check the latest firmware release available.
• Download the firmware image and verify its checksum.
• Allow to force/skip upgrade matching the current release.
• Expand the root partition and filesystem after upgrading.

# Configure profile
mkdir -p /etc/profile.d
cat << "EOF" > /etc/profile.d/sysupgrade.sh
sysupgrade() {
local SYSUP_CMD="${1}"
case "${SYSUP_CMD}" in
(-I) opkg save
sysupgrade_init ;;
(-A) . /etc/openwrt_release
sysupgrade_auto ;;
(-U) local SYSUP_FORCE="1"
sysupgrade -A ;;
(*) command sysupgrade "${@}" ;;
esac
}
 
sysupgrade_init() {
uci -q batch << EOI
set opkg.init='opkg'
add_list opkg.init.ipkg='losetup'
add_list opkg.init.ipkg='parted'
add_list opkg.init.ipkg='resize2fs'
commit opkg
EOI
}
 
sysupgrade_auto() {
local SYSUP_VER="$(sysupgrade_ver)"
local SYSUP_URL="$(sysupgrade_url)"
local SYSUP_REV="$(sysupgrade_rev)"
if [ "${SYSUP_REV}" != "${DISTRIB_REVISION}" ] \
|| [ -n "${SYSUP_FORCE}" ]
then
local SYSUP_DEV="$(sysupgrade_dev)"
local SYSUP_PROF="$(sysupgrade_prof)"
local SYSUP_FS="$(sysupgrade_fs)"
local SYSUP_TYPE="$(sysupgrade_type)"
local SYSUP_EFI="$(sysupgrade_efi)"
local SYSUP_JSON="$(sysupgrade_json)"
local SYSUP_IMG="$(sysupgrade_img)"
local SYSUP_HASH="$(sysupgrade_hash)"
uclient-fetch -P /tmp "${SYSUP_URL}/${SYSUP_IMG}"
sha256sum -c << EOI
${SYSUP_HASH}  /tmp/${SYSUP_IMG}
EOI
case "${SYSUP_IMG}" in
(*.gz) gunzip -k /tmp/"${SYSUP_IMG}" ;;
esac
sysupgrade -i /tmp/"${SYSUP_IMG%.gz}"
fi
}
 
sysupgrade_ver() {
case "${DISTRIB_RELEASE}" in
(SNAPSHOT) echo "../snapshots" ;;
(*) uclient-fetch -O - \
"https://api.github.com/repos/openwrt/openwrt/tags" \
| jsonfilter -e "$[*]['name']" \
| sed -e "/-rc/d;s/^v//;q" ;;
esac
}
 
sysupgrade_url() {
echo "https://downloads.openwrt.org/\
releases/${SYSUP_VER}/targets/${DISTRIB_TARGET}"
}
 
sysupgrade_rev() {
uclient-fetch -O - "${SYSUP_URL}/version.buildinfo"
}
 
sysupgrade_dev() {
ubus call system board \
| jsonfilter -e "$['board_name']"
}
 
sysupgrade_prof() {
case "${DISTRIB_TARGET}" in
(x86*) echo "generic" ;;
(*) echo "${SYSUP_DEV//,/_}" ;;
esac
}
 
sysupgrade_fs() {
ubus call system board \
| jsonfilter -e "$['rootfs_type']"
}
 
sysupgrade_type() {
case "${DISTRIB_TARGET}" in
(x86*) echo "combined" ;;
(*) echo "sysupgrade" ;;
esac
}
 
sysupgrade_efi() {
if [ -d /sys/firmware/efi ]
then echo "-efi"
fi
}
 
sysupgrade_json() {
uclient-fetch -O - "${SYSUP_URL}/profiles.json" \
| jsonfilter -e "$['profiles']['${SYSUP_PROF}']\
['images'][@['type']='${SYSUP_TYPE}${SYSUP_EFI}'\
&&@['filesystem']='${SYSUP_FS}']"
}
 
sysupgrade_img() {
jsonfilter -e "$['name']" << EOI
${SYSUP_JSON}
EOI
}
 
sysupgrade_hash() {
jsonfilter -e "$['sha256']" << EOI
${SYSUP_JSON}
EOI
}
EOF
. /etc/profile.d/sysupgrade.sh
 
# Configure startup scripts
cat << "EOF" > /etc/uci-defaults/70-rootpt-resize
if [ ! -e /etc/rootpt-resize ] \
&& type parted > /dev/null \
&& lock -n /var/lock/rootpt-resize
then
BOOT_DEV="$(sed -n -e "\|\s/boot\s.*$|{s///p;q}" /etc/mtab)"
BOOT_PART="${BOOT_DEV##*[^0-9]}"
DISK_DEV="${BOOT_DEV%${BOOT_PART}}"
parted -l ---pretend-input-tty << EOI
ok
fix
EOI
parted -s "${DISK_DEV%p}" resizepart "$((BOOT_PART+1))" 100%
touch /etc/rootpt-resize
reboot
fi
exit 1
EOF
cat << "EOF" > /etc/uci-defaults/80-rootfs-resize
if [ ! -e /etc/rootfs-resize ] \
&& [ -e /etc/rootpt-resize ] \
&& type losetup > /dev/null \
&& type resize2fs > /dev/null \
&& lock -n /var/lock/rootpt-resize
then
BOOT_DEV="$(sed -n -e "\|\s/boot\s.*$|{s///p;q}" /etc/mtab)"
BOOT_PART="${BOOT_DEV##*[^0-9]}"
DISK_DEV="${BOOT_DEV%${BOOT_PART}}"
ROOT_DEV="${DISK_DEV}$((BOOT_PART+1))"
ROOT_TYPE="$(ubus call system board \
| jsonfilter -e "$['rootfs_type']")"
case "${ROOT_TYPE}" in
(ext4) LOOP_DEV="$(losetup -f)"
losetup "${LOOP_DEV}" "${ROOT_DEV}" ;;
(squashfs) LOOP_DEV="$(losetup -n -l \
| sed -n -e "\|\s.*\s${ROOT_DEV#/dev}\s.*$|{s///p;q}")" ;;
esac
resize2fs -f "${LOOP_DEV}"
touch /etc/rootfs-resize
reboot
fi
exit 1
EOF
cat << "EOF" >> /etc/sysupgrade.conf
/etc/uci-defaults
EOF

# Automated Sysupgrade
sysupgrade -I
sysupgrade -A

uclient-fetch -O sysupgrade-extras.sh "https://openwrt.org/_export/code/docs/guide-user/advanced/sysupgrade_extras?codeblock=0"
. ./sysupgrade-extras.sh