unix: test nonblocking and close-on-exec behavior of Pipe2
Following TestNonblockingPipe in package runtime.
Change-Id: Ifacec3ea6ce372a891273e3ec9fa4194f7d17619
Reviewed-on: https://go-review.googlesource.com/c/sys/+/295869
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/unix/pipe2_test.go b/unix/pipe2_test.go
index f556b02..d2f50a1 100644
--- a/unix/pipe2_test.go
+++ b/unix/pipe2_test.go
@@ -54,3 +54,42 @@
t.Fatalf("bad close: %v", err)
}
}
+
+func checkNonblocking(t *testing.T, fd int, name string) {
+ t.Helper()
+ flags, err := unix.FcntlInt(uintptr(fd), unix.F_GETFL, 0)
+ if err != nil {
+ t.Errorf("fcntl(%s, F_GETFL) failed: %v", name, err)
+ } else if flags&unix.O_NONBLOCK == 0 {
+ t.Errorf("O_NONBLOCK not set in %s flags %#x", name, flags)
+ }
+}
+
+func checkCloseonexec(t *testing.T, fd int, name string) {
+ t.Helper()
+ flags, err := unix.FcntlInt(uintptr(fd), unix.F_GETFD, 0)
+ if err != nil {
+ t.Errorf("fcntl(%s, F_GETFD) failed: %v", name, err)
+ } else if flags&unix.FD_CLOEXEC == 0 {
+ t.Errorf("FD_CLOEXEC not set in %s flags %#x", name, flags)
+ }
+}
+
+func TestNonblockingPipe2(t *testing.T) {
+ var pipes [2]int
+ err := unix.Pipe2(pipes[:], unix.O_NONBLOCK|unix.O_CLOEXEC)
+ if err != nil {
+ t.Fatalf("pipe2: %v", err)
+ }
+ r := pipes[0]
+ w := pipes[1]
+ defer func() {
+ unix.Close(r)
+ unix.Close(w)
+ }()
+
+ checkNonblocking(t, r, "reader")
+ checkCloseonexec(t, r, "reader")
+ checkNonblocking(t, w, "writer")
+ checkCloseonexec(t, w, "writer")
+}
