zig

commit f22eea82c4563545844c2f5840e9cc1c9bd31fe0 (tree)
parent b672dc7abfe318623e88afd2e9ccaffbf38eb401
Author: Joran Dirk Greef <joran@ronomon.com>
Date:   Sun, 20 Sep 2020 15:33:48 +0200

Fix opcode support detection for read/write test

Diffstat:
M
lib/std/os/linux/io_uring.zig
 | 
6
++++--

1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/lib/std/os/linux/io_uring.zig b/lib/std/os/linux/io_uring.zig
@@ -848,8 +848,10 @@ test "queue_write/queue_read" {
 
     var cqe1 = try ring.copy_cqe();
     var cqe2 = try ring.copy_cqe();
-    if (cqe1.res == -linux.EOPNOTSUPP) return error.SkipZigTest;
-    if (cqe2.res == -linux.EOPNOTSUPP) return error.SkipZigTest;
+    // Prior to Linux Kernel 5.6 this is the only way to test for read/write support:
+    // https://lwn.net/Articles/809820/
+    if (cqe1.res == -linux.EINVAL) return error.SkipZigTest;
+    if (cqe2.res == -linux.EINVAL) return error.SkipZigTest;
     testing.expectEqual(linux.io_uring_cqe {
         .user_data = 123,
         .res = buffer_write.len,