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installer: probe slots under /tmp; tolerate offline ffboot refresh

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Newer factory firmware (2024) has no /factory/imgN mounts and a
read-only rootfs, so slot probing and post-write verification mount
under /tmp, with the active slot read from the running root. The
target-slot unmount sweeps /proc/mounts (older firmware DOES mount the
slots). A failed ffboot download keeps an existing /data/ffboot
instead of aborting, so a local-.fw install works fully offline.
This commit is contained in:
ScottW514
2026-08-08 12:43:17 -04:00
parent 1097184e13
commit 882a1b1b2d
1 changed files with 33 additions and 12 deletions
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scripts/install-forgefirm.sh
+33 -12
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@@ -49,18 +49,28 @@ stop_gf_services () {
echo "."
}
# slot_probe <1|2>: sets S_TYPE (factory|forgefirm|unknown) and S_VER
# slot_probe <1|2>: sets S_TYPE (factory|forgefirm|unknown) and S_VER.
# The active slot is read from the running rootfs; others are mounted
# read-only under /tmp (newer factory firmware has no /factory/imgN
# mounts, and the rootfs is read-only).
slot_probe () {
S_TYPE=unknown; S_VER=""
MP="/factory/img$1"
if [ ! -f "$MP/etc/version" ] && [ ! -f "$MP/etc/forgefirm-version" ]; then
mkdir -p "$MP"
mount -o ro "/dev/mmcblk2p$1" "$MP" 2>/dev/null
if [ "$1" = "$ACTIVE" ]; then
RD=""
else
RD="/tmp/ffinstall.probe.$$"
mkdir -p "$RD" || return 1
mount -o ro "/dev/mmcblk2p$1" "$RD" 2>/dev/null \
|| { rmdir "$RD" 2>/dev/null; return 1; }
fi
if [ -f "$MP/etc/forgefirm-version" ]; then
S_TYPE=forgefirm; S_VER=$(cat "$MP/etc/forgefirm-version")
elif [ -f "$MP/etc/version" ]; then
S_TYPE=factory; S_VER=$(cat "$MP/etc/version")
if [ -f "$RD/etc/forgefirm-version" ]; then
S_TYPE=forgefirm; S_VER=$(cat "$RD/etc/forgefirm-version")
elif [ -f "$RD/etc/version" ]; then
S_TYPE=factory; S_VER=$(cat "$RD/etc/version")
fi
if [ -n "$RD" ]; then
umount "$RD" 2>/dev/null
rmdir "$RD" 2>/dev/null
fi
}
@@ -186,23 +196,34 @@ fwup -m -i "$FW_FILE" | grep meta-version
# --- apply to the inactive slot -----------------------------------------------
echo -e "${ASTERISK}Writing ForgeFIRM to slot $TARGET (/dev/mmcblk2p$TARGET):"
umount "/factory/img$TARGET" 2>/dev/null
for M in $(sed -n "s|^/dev/mmcblk2p$TARGET \([^ ]*\).*|\1|p" /proc/mounts); do
umount "$M" 2>/dev/null
done
fwup -a -d "/dev/mmcblk2p$TARGET" -i "$FW_FILE" -t "$TASK" -p "$KEYFILE" \
|| { rm -f "$KEYFILE"; die "fwup apply failed - slot $TARGET is now undefined, factory slot $ACTIVE is untouched"; }
rm -f "$KEYFILE"
# --- post-write verify --------------------------------------------------------
MP="/factory/img$TARGET"
MP="/tmp/ffinstall.verify.$$"
mkdir -p "$MP"
mount -o ro "/dev/mmcblk2p$TARGET" "$MP" || die "new rootfs does not mount"
NEWVER=$(cat "$MP/etc/forgefirm-version" 2>/dev/null)
[ -n "$NEWVER" ] || { umount "$MP"; die "new rootfs has no ForgeFIRM version stamp"; }
[ -f "$MP/boot/zImage" ] || { umount "$MP"; die "new rootfs has no kernel"; }
umount "$MP"
rmdir "$MP" 2>/dev/null
echo -e "${ASTERISK}Slot $TARGET now holds ForgeFIRM $NEWVER"
# --- ffboot for the factory side ----------------------------------------------
curl -fL "$FFBOOT_URL" --output /data/ffboot || die "ffboot download failed"
if curl -fL "$FFBOOT_URL" --output /data/ffboot.new 2>/dev/null \
&& [ -s /data/ffboot.new ]; then
mv /data/ffboot.new /data/ffboot
else
rm -f /data/ffboot.new
[ -x /data/ffboot ] \
|| die "ffboot download failed and no /data/ffboot is present"
echo -e "${ASTERISK}ffboot download failed; keeping the existing /data/ffboot"
fi
chmod +x /data/ffboot
# --- flip the boot selection --------------------------------------------------