metaovl: Fix incorrect permission, Add updateJson and changelog

userspace/meta-overlayfs/build.sh

@@ -5,8 +5,18 @@ set -e
 VERSION=$(grep '^version' Cargo.toml | head -1 | sed 's/.*"\(.*\)".*/\1/')
 OUTPUT_DIR="target"
 METAMODULE_DIR="metamodule"
+MODULE_PROP_FILE="$METAMODULE_DIR/module.prop"
+UPDATE_JSON_FILE="$METAMODULE_DIR/update.json"
 MODULE_OUTPUT_DIR="$OUTPUT_DIR/module"
 
+MODULE_VERSION=$(grep -m1 '^version=' "$MODULE_PROP_FILE" | cut -d'=' -f2- | tr -d '\r')
+MODULE_VERSION_CODE=$(grep -m1 '^versionCode=' "$MODULE_PROP_FILE" | cut -d'=' -f2- | tr -d '\r')
+
+if [ -z "$MODULE_VERSION" ] || [ -z "$MODULE_VERSION_CODE" ]; then
+    echo "Error: Failed to read module version information from $MODULE_PROP_FILE"
+    exit 1
+fi
+
 echo "=========================================="
 echo "Building meta-overlayfs v${VERSION}"
 echo "=========================================="
@@ -77,10 +87,30 @@ echo "  x86_64:  $(du -h "$MODULE_OUTPUT_DIR"/meta-overlayfs-x86_64 | awk '{prin
 echo ""
 echo "Packaging..."
 cd "$MODULE_OUTPUT_DIR"
-ZIP_NAME="meta-overlayfs-v${VERSION}.zip"
+ZIP_NAME="meta-overlayfs-v${MODULE_VERSION}.zip"
 zip -r "../$ZIP_NAME" .
 cd ../..
 
+echo ""
+echo "Generating update.json..."
+if ! LATEST_TAG=$(git describe --tags --abbrev=0 2>/dev/null); then
+    echo "Error: Unable to determine the latest git tag."
+    exit 1
+fi
+
+ZIP_URL="https://github.com/tiann/KernelSU/releases/download/${LATEST_TAG}/${ZIP_NAME}"
+CHANGELOG_URL="https://github.com/tiann/KernelSU/releases/download/${LATEST_TAG}/meta-overlayfs-changelog.md"
+
+cat > "$UPDATE_JSON_FILE" <<EOF
+{
+    "version": "${MODULE_VERSION}",
+    "versionCode": ${MODULE_VERSION_CODE},
+    "zipUrl": "${ZIP_URL}",
+    "changelog": "${CHANGELOG_URL}"
+}
+EOF
+echo "Generated $UPDATE_JSON_FILE"
+
 echo ""
 echo "=========================================="
 echo "Build completed successfully!"