From afed9ccfadc24a6a58da781cfe7eb5d1a4e4f7c3 Mon Sep 17 00:00:00 2001
From: Ben Radford <benradf@users.noreply.github.com>
Date: Tue, 16 May 2023 13:57:56 +0100
Subject: [PATCH] Add enum for intended sqlite database open modes.

---
 src/libstore/sqlite.hh | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/libstore/sqlite.hh b/src/libstore/sqlite.hh
index 6e14852cb..8f4bc49a8 100644
--- a/src/libstore/sqlite.hh
+++ b/src/libstore/sqlite.hh
@@ -11,6 +11,24 @@ struct sqlite3_stmt;
 
 namespace nix {
 
+enum class SQLiteOpenMode {
+    /**
+     * Open the database in read-write mode.
+     * If the database does not exist, it will be created.
+     */
+    Normal,
+    /**
+     * Open the database in read-write mode.
+     * Fails with an error if the database does not exist.
+     */
+    NoCreate,
+    /**
+     * Open the database in read-only mode.
+     * Fails with an error if the database does not exist.
+     */
+    ReadOnly
+};
+
 /**
  * RAII wrapper to close a SQLite database automatically.
  */