Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 22 insertions, 0 deletions

diff --git a/stubs/error-printf.c b/stubs/error-printf.c
new file mode 100644
index 000000000..a2f61521a
--- /dev/null
+++ b/stubs/error-printf.c
@@ -0,0 +1,22 @@
+#include "qemu/osdep.h"
+#include "qemu/error-report.h"
+
+int error_vprintf(const char *fmt, va_list ap)
+{
+    int ret;
+
+    if (g_test_initialized() && !g_test_subprocess() &&
+        getenv("QTEST_SILENT_ERRORS")) {
+        char *msg = g_strdup_vprintf(fmt, ap);
+        g_test_message("%s", msg);
+        ret = strlen(msg);
+        g_free(msg);
+        return ret;
+    }
+    return vfprintf(stderr, fmt, ap);
+}
+
+int error_vprintf_unless_qmp(const char *fmt, va_list ap)
+{
+    return error_vprintf(fmt, ap);
+}