1 files changed, 38 insertions, 0 deletions
diff --git a/scripts/maintenance-lib.sh b/scripts/maintenance-lib.sh
new file mode 100644
index 0000000..33e7e07
--- /dev/null
+++ b/scripts/maintenance-lib.sh
@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+
+# Set args and maintenance_run for one domain of a maintenance request.
+# shellcheck disable=SC2034
+_maintenance_select() {
+  local scope=$1 domain=$2 role raw target
+  shift 2
+  role=$(_machine_role) || return 1
+  args=()
+  maintenance_run=false
+  if [ "$scope" = host ]; then
+    _require_host || return 1
+    args=("$@")
+    maintenance_run=true
+    return
+  fi
+  for raw in "$@"; do
+    case "$raw" in
+      /etc/* | etc/*)
+        [ "$role" = host ] || {
+          echo 'error: /etc paths require the host role' >&2
+          return 1
+        }
+        target=etc
+        ;;
+      */*) target=home ;;
+      *)
+        echo "error: expected a file path: $raw" >&2
+        return 1
+        ;;
+    esac
+    [ "$target" != "$domain" ] || args+=("$raw")
+  done
+  if [ ${#args[@]} -gt 0 ] || { [ $# -eq 0 ] && { [ "$domain" = home ] || [ "$role" = host ]; }; }; then
+    maintenance_run=true
+  fi
+  return 0
+}