tests/qtest: libqtest: Exclude the *_fds APIs for win32

libqmp.c::qmp_fd_vsend_fds() is not available on Windows, hence any
APIs in libqtest that call libqmp.c::qmp_fd_vsend_fds() should be
excluded for win32 too. This includes the following:

  * qtest_qmp_vsend_fds()
  * qtest_vqmp_fds()
  * qtest_qmp_fds()
  * qtest_qmp_add_client()

Note qtest_qmp_vsend() was wrongly written to call qmp_fd_vsend_fds()
previously, but it should call the non fds version API qmp_fd_vsend().

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220925113032.1949844-35-bmeng.cn@gmail.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

tests/qtest/libqtest.c

@@ -592,17 +592,20 @@ int qtest_socket_server(const char *socket_path)
     return sock;
 }
 
+#ifndef _WIN32
 void qtest_qmp_vsend_fds(QTestState *s, int *fds, size_t fds_num,
                          const char *fmt, va_list ap)
 {
     qmp_fd_vsend_fds(s->qmp_fd, fds, fds_num, fmt, ap);
 }
+#endif
 
 void qtest_qmp_vsend(QTestState *s, const char *fmt, va_list ap)
 {
-    qmp_fd_vsend_fds(s->qmp_fd, NULL, 0, fmt, ap);
+    qmp_fd_vsend(s->qmp_fd, fmt, ap);
 }
 
+#ifndef _WIN32
 QDict *qtest_vqmp_fds(QTestState *s, int *fds, size_t fds_num,
                       const char *fmt, va_list ap)
 {
@@ -611,6 +614,7 @@ QDict *qtest_vqmp_fds(QTestState *s, int *fds, size_t fds_num,
     /* Receive reply */
     return qtest_qmp_receive(s);
 }
+#endif
 
 QDict *qtest_vqmp(QTestState *s, const char *fmt, va_list ap)
 {
@@ -620,6 +624,7 @@ QDict *qtest_vqmp(QTestState *s, const char *fmt, va_list ap)
     return qtest_qmp_receive(s);
 }
 
+#ifndef _WIN32
 QDict *qtest_qmp_fds(QTestState *s, int *fds, size_t fds_num,
                      const char *fmt, ...)
 {
@@ -631,6 +636,7 @@ QDict *qtest_qmp_fds(QTestState *s, int *fds, size_t fds_num,
     va_end(ap);
     return response;
 }
+#endif
 
 QDict *qtest_qmp(QTestState *s, const char *fmt, ...)
 {
@@ -1327,6 +1333,7 @@ void qtest_qmp_device_add(QTestState *qts, const char *driver, const char *id,
     qobject_unref(args);
 }
 
+#ifndef _WIN32
 void qtest_qmp_add_client(QTestState *qts, const char *protocol, int fd)
 {
     QDict *resp;
@@ -1346,6 +1353,7 @@ void qtest_qmp_add_client(QTestState *qts, const char *protocol, int fd)
     g_assert(!qdict_haskey(resp, "error"));
     qobject_unref(resp);
 }
+#endif
 
 /*
  * Generic hot-unplugging test via the device_del QMP command.

tests/qtest/libqtest.h

@@ -94,6 +94,7 @@ void qtest_kill_qemu(QTestState *s);
  */
 void qtest_quit(QTestState *s);
 
+#ifndef _WIN32
 /**
  * qtest_qmp_fds:
  * @s: #QTestState instance to operate on.
@@ -108,6 +109,7 @@ void qtest_quit(QTestState *s);
 QDict *qtest_qmp_fds(QTestState *s, int *fds, size_t fds_num,
                      const char *fmt, ...)
     G_GNUC_PRINTF(4, 5);
+#endif /* _WIN32 */
 
 /**
  * qtest_qmp:
@@ -152,6 +154,7 @@ void qtest_qmp_send_raw(QTestState *s, const char *fmt, ...)
  */
 int qtest_socket_server(const char *socket_path);
 
+#ifndef _WIN32
 /**
  * qtest_vqmp_fds:
  * @s: #QTestState instance to operate on.
@@ -167,6 +170,7 @@ int qtest_socket_server(const char *socket_path);
 QDict *qtest_vqmp_fds(QTestState *s, int *fds, size_t fds_num,
                       const char *fmt, va_list ap)
     G_GNUC_PRINTF(4, 0);
+#endif /* _WIN32 */
 
 /**
  * qtest_vqmp:
@@ -181,6 +185,7 @@ QDict *qtest_vqmp_fds(QTestState *s, int *fds, size_t fds_num,
 QDict *qtest_vqmp(QTestState *s, const char *fmt, va_list ap)
     G_GNUC_PRINTF(2, 0);
 
+#ifndef _WIN32
 /**
  * qtest_qmp_vsend_fds:
  * @s: #QTestState instance to operate on.
@@ -196,6 +201,7 @@ QDict *qtest_vqmp(QTestState *s, const char *fmt, va_list ap)
 void qtest_qmp_vsend_fds(QTestState *s, int *fds, size_t fds_num,
                          const char *fmt, va_list ap)
     G_GNUC_PRINTF(4, 0);
+#endif /* _WIN32 */
 
 /**
  * qtest_qmp_vsend:
@@ -743,6 +749,7 @@ void qtest_qmp_device_add_qdict(QTestState *qts, const char *drv,
 void qtest_qmp_device_add(QTestState *qts, const char *driver, const char *id,
                           const char *fmt, ...) G_GNUC_PRINTF(4, 5);
 
+#ifndef _WIN32
 /**
  * qtest_qmp_add_client:
  * @qts: QTestState instance to operate on
@@ -752,6 +759,7 @@ void qtest_qmp_device_add(QTestState *qts, const char *driver, const char *id,
  * Call QMP ``getfd`` followed by ``add_client`` with the given @fd.
  */
 void qtest_qmp_add_client(QTestState *qts, const char *protocol, int fd);
+#endif /* _WIN32 */
 
 /**
  * qtest_qmp_device_del: