From c896660c44de4f1840c90ca5f2d488e440c6c7f6 Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Fri, 22 Oct 2021 09:51:57 +0200
Subject: [PATCH] iobus: implement nobuffers error

Signed-off-by: Drew DeVault <sir@cmpwn.com>

---
 io_uring/cqe.ha | 14 +++++++++++---

diff --git a/io_uring/cqe.ha b/io_uring/cqe.ha
index 22116fd7a2c32c2197a35804a2ecedca7af22f27..b14d21bf89fa818f1992057ffaf91719d754afba 100644
--- a/io_uring/cqe.ha
+++ b/io_uring/cqe.ha
@@ -28,9 +28,17 @@ // queue.
 export fn peek(ring: *io_uring) (nullable *cqe | error) = get_cqe(ring, 0, 0);
 
 // Returns the result of a [[cqe]], or an error if unsuccessful.
-export fn result(cqe: *cqe) (int | error) =
-	if (cqe.res < 0) errors::errno(rt::wrap_errno(-cqe.res))
-	else cqe.res;
+export fn result(cqe: *cqe) (int | error) = {
+	if (cqe.res >= 0) {
+		return cqe.res;
+	};
+	switch (-cqe.res) {
+	case rt::ENOBUFS =>
+		return nobuffers;
+	case =>
+		return errors::errno(rt::wrap_errno(-cqe.res));
+	};
+};
 
 // Gets the user data field of a [[cqe]]. See [[set_user]] for the corresponding
 // SQE function.

-- 
2.48.1