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-rw-r--r--package/base-files/files/lib/upgrade/fwtool.sh40
1 files changed, 40 insertions, 0 deletions
diff --git a/package/base-files/files/lib/upgrade/fwtool.sh b/package/base-files/files/lib/upgrade/fwtool.sh
new file mode 100644
index 0000000000..984c173097
--- /dev/null
+++ b/package/base-files/files/lib/upgrade/fwtool.sh
@@ -0,0 +1,40 @@
+fwtool_pre_upgrade() {
+ fwtool -q -i /dev/null "$1"
+}
+
+fwtool_check_image() {
+ [ $# -gt 1 ] && return 1
+
+ . /usr/share/libubox/jshn.sh
+
+ if ! fwtool -q -i /tmp/sysupgrade.meta "$1"; then
+ echo "Image metadata not found"
+ [ "$REQUIRE_IMAGE_METADATA" = 1 ] && return 1
+ return 0
+ fi
+
+ json_load "$(cat /tmp/sysupgrade.meta)" || {
+ echo "Invalid image metadata"
+ return 1
+ }
+
+ device="$(cat /tmp/sysinfo/board_name)"
+
+ json_select supported_devices || return 1
+
+ json_get_keys dev_keys
+ for k in $dev_keys; do
+ json_get_var dev "$k"
+ [ "$dev" = "$device" ] && return 0
+ done
+
+ echo "Device $device not supported by this image"
+ echo -n "Supported devices:"
+ for k in $dev_keys; do
+ json_get_var dev "$k"
+ echo -n " $dev"
+ done
+ echo
+
+ return 1
+}