From 10256b331c9c7c4943a7bb6224f022b3aeb447c1 Mon Sep 17 00:00:00 2001
From: 4lDO2 <4lDO2@protonmail.com>
Date: Mon, 11 Sep 2023 18:18:00 +0200
Subject: [PATCH] Ensure only the kernel can return EINTR.

---
 src/scheme/user.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/scheme/user.rs b/src/scheme/user.rs
index 530c73eb47..9d464db2bc 100644
--- a/src/scheme/user.rs
+++ b/src/scheme/user.rs
@@ -689,7 +689,12 @@ impl UserInner {
                 _ => return Err(Error::new(EINVAL)),
             }
         } else {
-            self.respond(packet.id, Response::Regular(packet.a))?;
+            let response = if Error::demux(packet.a) == Err(Error::new(EINTR)) {
+                Error::mux(Err(Error::new(EIO)))
+            } else {
+                packet.a
+            };
+            self.respond(packet.id, Response::Regular(response))?;
         }
 
         Ok(())