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unix: test nonblocking and close-on-exec behavior of Pipe2

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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>
This commit is contained in:
Tobias Klauser
2021-02-24 15:08:13 +01:00
committed by Tobias Klauser
parent 2738c018e2
commit 4ada9433c6
1 changed files with 39 additions and 0 deletions
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39
unix/pipe2_test.go
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@@ -54,3 +54,42 @@ func TestPipe2(t *testing.T) {
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")
}