[Spice-devel] [spice-server 2/3] test-display-base: Pass proper types to spice_server_add_interface

[Christophe Fergeau]

This is a revert of 93b4f4050^ and 93b4f4050.
For a SpiceCharDeviceInstance, the base interface must be a
SpiceCharDeviceInterface instance, not a SpiceBaseInterface instance, or
spice-server code will end up reading out of bounds.

vmc_state/vmc_write/vmc_read implementations also have to be provided.
---
 server/tests/test-display-base.c | 39 +++++++++++++++++++++++++++++++++------
 1 file changed, 33 insertions(+), 6 deletions(-)

diff --git a/server/tests/test-display-base.c b/server/tests/test-display-base.c
index 5a7e775..302d468 100644
--- a/server/tests/test-display-base.c
+++ b/server/tests/test-display-base.c
@@ -816,16 +816,43 @@ void test_add_display_interface(Test* test)
     spice_server_add_interface(test->server, &test->qxl_instance.base);
 }
 
-static SpiceBaseInterface base = {
-    .type          = SPICE_INTERFACE_CHAR_DEVICE,
-    .description   = "test spice virtual channel char device",
-    .major_version = SPICE_INTERFACE_CHAR_DEVICE_MAJOR,
-    .minor_version = SPICE_INTERFACE_CHAR_DEVICE_MINOR,
+static int vmc_write(SPICE_GNUC_UNUSED SpiceCharDeviceInstance *sin,
+                     SPICE_GNUC_UNUSED const uint8_t *buf,
+                     int len)
+{
+    printf("%s: %d\n", __func__, len);
+    return len;
+}
+
+static int vmc_read(SPICE_GNUC_UNUSED SpiceCharDeviceInstance *sin,
+                    SPICE_GNUC_UNUSED uint8_t *buf,
+                    int len)
+{
+    printf("%s: %d\n", __func__, len);
+    return 0;
+}
+
+static void vmc_state(SPICE_GNUC_UNUSED SpiceCharDeviceInstance *sin,
+                      int connected)
+{
+    printf("%s: %d\n", __func__, connected);
+}
+
+
+static SpiceCharDeviceInterface vdagent_sif = {
+    .base.type          = SPICE_INTERFACE_CHAR_DEVICE,
+    .base.description   = "test spice virtual channel char device",
+    .base.major_version = SPICE_INTERFACE_CHAR_DEVICE_MAJOR,
+    .base.minor_version = SPICE_INTERFACE_CHAR_DEVICE_MINOR,
+    .state              = vmc_state,
+    .write              = vmc_write,
+    .read               = vmc_read,
+
 };
 
 SpiceCharDeviceInstance vdagent_sin = {
     .base = {
-        .sif = &base,
+        .sif = &vdagent_sif.base,
     },
     .subtype = "vdagent",
 };
-- 
2.9.3