From 9b1d97cccd0d8b2b52ccc03c96b53691059625b1 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 16 Dec 2024 11:27:58 +0100
Subject: [PATCH] memfd-util: explain what memfd_create_wrapper() is for in a
 comment

---
 src/basic/memfd-util.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/basic/memfd-util.c b/src/basic/memfd-util.c
index 96bbba35e6..42ceb93545 100644
--- a/src/basic/memfd-util.c
+++ b/src/basic/memfd-util.c
@@ -24,6 +24,11 @@ int memfd_create_wrapper(const char *name, unsigned mode) {
         unsigned mode_compat;
         int mfd;
 
+        assert(name);
+
+        /* Wrapper around memfd_create() which adds compat with older kernels where memfd_create() didn't
+         * support MFD_EXEC/MFD_NOEXEC_SEAL. (kernel 6.3+) */
+
         mfd = RET_NERRNO(memfd_create(name, mode));
         if (mfd != -EINVAL)
                 return mfd;