libcutils: sockets_test breaks MAC build

- Neuter SOCK_NONBLOCK and SOCK_CLOEXEC if they are not defined.
- F_SETFL O_NONBLOCK after socket() call.
- Correct environment reference (we recently changed handler to
  replace non-ascii and non-numericals with '_' for env tag).

Test: libcutils_test32 --gtest_filter=SocketsTest.android_get_control_socket
Bug: 32450474
Change-Id: I409a8c2c78e5f057af5fd6251cbd8657018be22b
diff --git a/libcutils/tests/sockets_test.cpp b/libcutils/tests/sockets_test.cpp
index 82961a4..adfbf4a 100644
--- a/libcutils/tests/sockets_test.cpp
+++ b/libcutils/tests/sockets_test.cpp
@@ -190,8 +190,16 @@
     EXPECT_EQ(-1, socket_send_buffers(INVALID_SOCKET, nullptr, 0));
 }
 
+#ifndef SOCK_NONBLOCK
+#define SOCK_NONBLOCK 0
+#endif
+
+#ifndef SOCK_CLOEXEC
+#define SOCK_CLOEXEC 0
+#endif
+
 TEST(SocketsTest, android_get_control_socket) {
-    static const char key[] = ANDROID_SOCKET_ENV_PREFIX "SocketsTest.android_get_control_socket";
+    static const char key[] = ANDROID_SOCKET_ENV_PREFIX "SocketsTest_android_get_control_socket";
     static const char* name = key + strlen(ANDROID_SOCKET_ENV_PREFIX);
 
     EXPECT_EQ(unsetenv(key), 0);
@@ -199,6 +207,11 @@
 
     int fd;
     ASSERT_GE(fd = socket(PF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0), 0);
+#ifdef F_GETFL
+    int flags;
+    ASSERT_GE(flags = fcntl(fd, F_GETFL), 0);
+    ASSERT_GE(fcntl(fd, F_SETFL, flags | O_NONBLOCK), 0);
+#endif
     EXPECT_EQ(android_get_control_socket(name), -1);
 
     struct sockaddr_un addr;