From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Tiago Medicci <tiago.medicci@espressif.com>
Date: Thu, 7 May 2026 14:00:00 -0300
Subject: [PATCH] posixmodule: ignore chmod on NuttX like WASI

NuttX's tmpfs does not implement chstat, so chmod fails with ENOSYS.
Apply the same workaround already used for WASI: silently succeed
when HAVE_CHMOD is not defined.

---
 Modules/posixmodule.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -3608,8 +3608,8 @@
 #ifdef HAVE_CHMOD
         result = chmod(path->narrow, mode);
-#elif defined(__wasi__)
-        // WASI SDK 15.0 does not support chmod.
+#elif defined(__wasi__) || defined(__NuttX__)
+        // WASI SDK 15.0 and NuttX do not fully support chmod.
         // Ignore missing syscall for now.
         result = 0;
 #else