[Xen-devel] [PATCH v5] libxl: Spice vdagent support for upstream qemu

[Fabio Fantoni <fabio.fantoni@xxxxxxx>]

Usage:
- spicevdagent=1|0 (default=0)
Enables spice vdagent. The Spice vdagent is an optional component for
enhancing user experience and performing guest-oriented management
tasks. Its features includes: client mouse mode (no need to grab mouse
by client, no mouse lag), automatic adjustment of screen resolution,
copy and paste (text and image) between client and domU. It also
requires vdagent service installed on domU o.s. to work.

- spice_clipboard_sharing=1|0 (default=0)
Enables Spice clipboard sharing (copy/paste). It requires spicevdagent
enabled.

Changes from v4:
- Added the option to enabling the clipboard sharing.
- Added the define to libxl header.

Signed-off-by: Fabio Fantoni <fabio.fantoni@xxxxxxx>
---
 docs/man/xl.cfg.pod.5       |   14 ++++++++++++++
 tools/libxl/libxl.h         |   11 +++++++++++
 tools/libxl/libxl_create.c  |    3 +++
 tools/libxl/libxl_dm.c      |   10 ++++++++++
 tools/libxl/libxl_types.idl |    2 ++
 tools/libxl/xl_cmdimpl.c    |    4 ++++
 6 files changed, 44 insertions(+)

diff --git a/docs/man/xl.cfg.pod.5 b/docs/man/xl.cfg.pod.5
index 08d6cc4..769767b 100644
--- a/docs/man/xl.cfg.pod.5
+++ b/docs/man/xl.cfg.pod.5
@@ -1130,6 +1130,20 @@ Specify the ticket password which is used by a client 
for connection.
 Whether SPICE agent is used for client mouse mode. The default is true (1)
 (turn on)
 
+=item B<spicevdagent=BOOLEAN>
+
+Enables spice vdagent. The Spice vdagent is an optional component for
+enhancing user experience and performing guest-oriented management
+tasks. Its features includes: client mouse mode (no need to grab mouse
+by client, no mouse lag), automatic adjustment of screen resolution,
+copy and paste (text and image) between client and domU. It also
+requires vdagent service installed on domU o.s. to work. The default is 0.
+
+=item B<spice_clipboard_sharing=BOOLEAN>
+
+Enables Spice clipboard sharing (copy/paste). It requires spicevdagent
+enabled. The default is false (0).
+
 =back
 
 =head3 Miscellaneous Emulated Hardware
diff --git a/tools/libxl/libxl.h b/tools/libxl/libxl.h
index be19bf5..4cab294 100644
--- a/tools/libxl/libxl.h
+++ b/tools/libxl/libxl.h
@@ -344,6 +344,17 @@
  */
 #define LIBXL_HAVE_DOMINFO_OUTSTANDING_MEMKB 1
 
+/*
+ * LIBXL_HAVE_SPICE_VDAGENT
+ *
+ * If defined, then the libxl_spice_info structure will contain a boolean type:
+ * vdagent and clipboard_sharing. These values define if Spice vdagent and
+ * clipboard sharing are enabled.
+ *
+ * If this is not defined, the Spice vdagent support is ignored.
+ */
+#define LIBXL_HAVE_SPICE_VDAGENT 1
+
 /* Functions annotated with LIBXL_EXTERNAL_CALLERS_ONLY may not be
  * called from within libxl itself. Callers outside libxl, who
  * do not #include libxl_internal.h, are fine. */
diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c
index 0c32d0b..7567238 100644
--- a/tools/libxl/libxl_create.c
+++ b/tools/libxl/libxl_create.c
@@ -272,6 +272,9 @@ int libxl__domain_build_info_setdefault(libxl__gc *gc,
             libxl_defbool_setdefault(&b_info->u.hvm.spice.disable_ticketing,
                                      false);
             libxl_defbool_setdefault(&b_info->u.hvm.spice.agent_mouse, true);
+            libxl_defbool_setdefault(&b_info->u.hvm.spice.vdagent, false);
+            libxl_defbool_setdefault(&b_info->u.hvm.spice.clipboard_sharing,
+                                     false);
         }
 
         libxl_defbool_setdefault(&b_info->u.hvm.nographic, false);
diff --git a/tools/libxl/libxl_dm.c b/tools/libxl/libxl_dm.c
index 4035b6d..43c3bec 100644
--- a/tools/libxl/libxl_dm.c
+++ b/tools/libxl/libxl_dm.c
@@ -351,6 +351,10 @@ static char *dm_spice_options(libxl__gc *gc,
         opt = libxl__sprintf(gc, "%s,password=%s", opt, spice->passwd);
     opt = libxl__sprintf(gc, "%s,agent-mouse=%s", opt,
                          libxl_defbool_val(spice->agent_mouse) ? "on" : "off");
+
+    if (!libxl_defbool_val(spice->clipboard_sharing))
+        opt = libxl__sprintf(gc, "%s,disable-copy-paste", opt);
+
     return opt;
 }
 
@@ -472,6 +476,12 @@ static char ** 
libxl__build_device_model_args_new(libxl__gc *gc,
 
             flexarray_append(dm_args, "-spice");
             flexarray_append(dm_args, spiceoptions);
+            if (libxl_defbool_val(b_info->u.hvm.spice.vdagent)) {
+                flexarray_vappend(dm_args, "-device", "virtio-serial",
+                    "-chardev", "spicevmc,id=vdagent,name=vdagent", "-device",
+                    "virtserialport,chardev=vdagent,name=com.redhat.spice.0",
+                    NULL);
+            }
         }
 
         switch (b_info->u.hvm.vga.kind) {
diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
index 85341a0..8c79a09 100644
--- a/tools/libxl/libxl_types.idl
+++ b/tools/libxl/libxl_types.idl
@@ -175,6 +175,8 @@ libxl_spice_info = Struct("spice_info", [
     ("disable_ticketing", libxl_defbool),
     ("passwd",      string),
     ("agent_mouse", libxl_defbool),
+    ("vdagent",     libxl_defbool),
+    ("clipboard_sharing", libxl_defbool),
     ])
 
 libxl_sdl_info = Struct("sdl_info", [
diff --git a/tools/libxl/xl_cmdimpl.c b/tools/libxl/xl_cmdimpl.c
index 884f050..95d23bb 100644
--- a/tools/libxl/xl_cmdimpl.c
+++ b/tools/libxl/xl_cmdimpl.c
@@ -1495,6 +1495,10 @@ skip_vfb:
                                 &b_info->u.hvm.spice.passwd, 0);
         xlu_cfg_get_defbool(config, "spiceagent_mouse",
                             &b_info->u.hvm.spice.agent_mouse, 0);
+        xlu_cfg_get_defbool(config, "spicevdagent",
+                            &b_info->u.hvm.spice.vdagent, 0);
+        xlu_cfg_get_defbool(config, "spice_clipboard_sharing",
+                            &b_info->u.hvm.spice.clipboard_sharing, 0);
         xlu_cfg_get_defbool(config, "nographic", &b_info->u.hvm.nographic, 0);
         xlu_cfg_get_defbool(config, "gfx_passthru", 
                             &b_info->u.hvm.gfx_passthru, 0);
-- 
1.7.9.5


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