From 6400e8dbd96bb45e88e8e6b4e035fe186a5ab743 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Mon, 23 Jun 2025 16:00:21 +0900
Subject: [PATCH] musl: provide several missing definitions for prctl()

---
 src/include/musl/sys/prctl.h | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 src/include/musl/sys/prctl.h

diff --git a/src/include/musl/sys/prctl.h b/src/include/musl/sys/prctl.h
new file mode 100644
index 0000000000..0473a706cc
--- /dev/null
+++ b/src/include/musl/sys/prctl.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include_next <sys/prctl.h>     /* IWYU pragma: export */
+
+/* musl's sys/prctl.h does not include linux/prctl.h, and also we cannot include with linux/prctl.h.
+ * Hence, we need to provide some missing definitions. */
+
+#ifndef PR_SET_MDWE
+#define PR_SET_MDWE  65
+#endif
+
+#ifndef PR_MDWE_REFUSE_EXEC_GAIN
+#define PR_MDWE_REFUSE_EXEC_GAIN  (1UL << 0)
+#endif
+
+#ifndef PR_SET_MEMORY_MERGE
+#define PR_SET_MEMORY_MERGE  67
+#endif