mirror of
https://github.com/LibreELEC/LibreELEC.tv.git
synced 2025-07-24 11:16:51 +00:00
init: Add upgrade check to avoid incompatible upgrades [RFC,WIP]
This commit is contained in:
MilhouseVH
parent
1cfefd3596
commit
dc41c0580c
@ -163,7 +163,7 @@
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progress() {
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if test "$PROGRESS" = "yes"; then
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echo "### $1 ###"
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echo "### $1 ###" >&2
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fi
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}
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@ -182,7 +182,7 @@
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error() {
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# Display fatal error message
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# $1:action which caused error, $2:message
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echo "*** Error in $BOOT_STEP: $1: $2 ***"
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echo "*** Error in $BOOT_STEP: $1: $2 ***" >&2
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debug_shell
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}
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@ -341,6 +341,67 @@
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$MOUNT_CMD "$MOUNT_TARGET" "$2" "$3" "$4"
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}
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# mount the specified SYSTEM file and output arch from /etc/os-release
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get_project_arch() {
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mount_part "$1" "/sysroot" "ro,loop"
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if [ -f /sysroot/etc/os-release ]; then
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. /sysroot/etc/os-release
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echo "${LIBREELEC_ARCH:-${OPENELEC_ARCH}}"
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fi
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umount /sysroot
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}
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# If the project/arch of current matches the upgrade, then it is considered compatible.
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# Otherwise, mount the upgrade SYSTEM partition and, if canupdate.sh is available,
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# call the script to determine if the current upgrade file can be applied on to the
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# current system - 0 means it is compatible, non-zero that it is not compatible.
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is_compatible() {
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local result=1
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if [ "${2}" = "${3}" ]; then
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result=0
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else
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mount_part "$1" "/sysroot" "ro,loop"
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if [ -f /sysroot/usr/share/bootloader/canupdate.sh ]; then
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sh /sysroot/usr/share/bootloader/canupdate.sh "${2}" "${3}" && result=0
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fi
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umount /sysroot
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fi
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return ${result}
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}
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# determine if the new SYSTEM file is compatible with the current SYSTEM file
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check_is_compatible() {
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local update_filename="${1}"
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local old_system="${2}"
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local new_system="${3}"
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local old_project_arch="$(get_project_arch "${old_system}")"
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local new_project_arch="$(get_project_arch "${new_system}")"
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# If old or new project/arch isn't available then could be very old (pre-/etc/os-release) build - have to trust it
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if [ -n "${old_project_arch}" -a -n "${new_project_arch}" ]; then
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# If the old project/arch is not compatible with the new project/arch then abort...
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if ! is_compatible "${new_system}" "${old_project_arch}" "${new_project_arch}"; then
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echo ""
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echo "ERROR: $(basename "${update_filename}") is not compatible with ${old_project_arch} hardware - update cancelled."
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echo ""
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echo "Current system: ${old_project_arch}"
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echo "Update system: ${new_project_arch}"
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echo ""
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echo "Create $UPDATE_ROOT/.nocompat to disable compatibility checks and risk a non-booting system."
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echo ""
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return 1
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fi
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fi
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return 0
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}
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update_file() {
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if [ -f "$UPDATE_DIR/$2" -a -f "$3" ]; then
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mount -o remount,rw /flash
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@ -630,6 +691,7 @@
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rm -rf $UPDATE_ROOT/.tmp &>/dev/null
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rm -rf $UPDATE_ROOT/[0-9a-zA-Z]* &>/dev/null
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rm -f $UPDATE_ROOT/.nocheck $UPDATE_ROOT/.nocompat &>/dev/null
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sync
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@ -664,6 +726,7 @@
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if [ -f "$UPDATE_TAR" ] ; then
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echo "Found new .tar archive"
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UPDATE_FILENAME="$UPDATE_TAR"
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StartProgress spinner "Extracting contents of archive... "
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mkdir -p $UPDATE_DIR/.tmp &>/dev/null
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tar -xf "$UPDATE_TAR" -C $UPDATE_DIR/.tmp &>/dev/null
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@ -677,7 +740,7 @@
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if [ -f "$UPDATE_IMG_GZ" ]; then
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echo "Found new compressed image file"
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UPDATE_FILENAME="$UPDATE_IMG_GZ"
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StartProgress spinner "Decompressing image file... "
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gunzip -d -c "$UPDATE_IMG_GZ" 1>$IMG_FILE 2>/tmp/gzresult.txt || GZRESULT="1"
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sync
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@ -692,6 +755,7 @@
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fi
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else
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echo "Found new image file"
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UPDATE_FILENAME="$UPDATE_IMG"
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mv "$UPDATE_IMG" $IMG_FILE
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fi
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@ -732,6 +796,8 @@
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else
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UPDATE_KERNEL="@KERNEL_NAME@"
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fi
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else
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UPDATE_FILENAME="$UPDATE_DIR/$UPDATE_SYSTEM"
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fi
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sync
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@ -744,7 +810,7 @@
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fi
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# check md5 sums if .nocheck doesn't exist
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if [ ! -f "$UPDATE_DIR/.nocheck" ]; then
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if [ ! -f "$UPDATE_ROOT/.nocheck" ]; then
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if [ -f "$UPDATE_DIR/${UPDATE_KERNEL}.md5" -a -f "$UPDATE_DIR/${UPDATE_SYSTEM}.md5" ] ; then
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# *.md5 size-check
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if [ ! -s "$UPDATE_DIR/${UPDATE_KERNEL}.md5" -o ! -s "$UPDATE_DIR/${UPDATE_SYSTEM}.md5" ] ; then
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@ -783,6 +849,16 @@
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fi
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fi
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# Verify that the new upgrade is compatible with the current system - this should avoid creating
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# non-booting systems after (for example) an RPi tar is incorrectly applied to an RPi2 system.
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if [ ! -f "$UPDATE_ROOT/.nocompat" ]; then
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if ! check_is_compatible "$UPDATE_FILENAME" "/flash/$IMAGE_SYSTEM" "$UPDATE_DIR/$UPDATE_SYSTEM"; then
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do_cleanup
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StartProgress countdown "Normal startup in 60s... " 60 "NOW"
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return 0
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fi
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fi
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# get sizes
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FLASH_FREE=$(df /flash/ | awk '/[0-9]%/{print $4}')
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FLASH_FREE=$(( $FLASH_FREE * 1024 ))
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@ -798,7 +874,7 @@
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NEW_KERNEL=$(stat -t "$UPDATE_DIR/$UPDATE_KERNEL" | awk '{print $2}')
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NEW_SYSTEM=$(stat -t "$UPDATE_DIR/$UPDATE_SYSTEM" | awk '{print $2}')
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# old KERNEL+SYSTEM+free space - new KERNEL+SYSTEM must be higher then 5MB
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# old KERNEL+SYSTEM+free space - new KERNEL+SYSTEM must be higher than 5MB
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# at least 5MB free after update
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TMP_SIZE=$(($OLD_KERNEL+$OLD_SYSTEM+$FLASH_FREE-$NEW_KERNEL-$NEW_SYSTEM))
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