spice: Add -spice disable-agent-file-transfer cmdline option (rhbz#961850)

Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

qemu-options.hx

@@ -917,8 +917,8 @@ DEF("spice", HAS_ARG, QEMU_OPTION_spice,
     "       [,jpeg-wan-compression=[auto|never|always]]\n"
     "       [,zlib-glz-wan-compression=[auto|never|always]]\n"
     "       [,streaming-video=[off|all|filter]][,disable-copy-paste]\n"
-    "       [,agent-mouse=[on|off]][,playback-compression=[on|off]]\n"
-    "       [,seamless-migration=[on|off]]\n"
+    "       [,disable-agent-file-xfer][,agent-mouse=[on|off]]\n"
+    "       [,playback-compression=[on|off]][,seamless-migration=[on|off]]\n"
     "   enable spice\n"
     "   at least one of {port, tls-port} is mandatory\n",
     QEMU_ARCH_ALL)
@@ -961,6 +961,9 @@ Allow client connects without authentication.
 @item disable-copy-paste
 Disable copy paste between the client and the guest.
 
+@item disable-agent-file-xfer
+Disable spice-vdagent based file-xfer between the client and the guest.
+
 @item tls-port=<nr>
 Set the TCP port spice is listening on for encrypted channels.
 

ui/spice-core.c

@@ -445,6 +445,9 @@ static QemuOptsList qemu_spice_opts = {
         },{
             .name = "disable-copy-paste",
             .type = QEMU_OPT_BOOL,
+        },{
+            .name = "disable-agent-file-xfer",
+            .type = QEMU_OPT_BOOL,
         },{
             .name = "sasl",
             .type = QEMU_OPT_BOOL,
@@ -739,6 +742,16 @@ void qemu_spice_init(void)
         spice_server_set_agent_copypaste(spice_server, false);
     }
 
+    if (qemu_opt_get_bool(opts, "disable-agent-file-xfer", 0)) {
+#if SPICE_SERVER_VERSION >= 0x000c04
+        spice_server_set_agent_file_xfer(spice_server, false);
+#else
+        error_report("this qemu build does not support the "
+                     "\"disable-agent-file-xfer\" option");
+        exit(1);
+#endif
+    }
+
     compression = SPICE_IMAGE_COMPRESS_AUTO_GLZ;
     str = qemu_opt_get(opts, "image-compression");
     if (str) {