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authorMarc-André Lureau <marcandre.lureau@redhat.com>2019-02-21 12:07:03 +0100
committerGerd Hoffmann <kraxel@redhat.com>2019-02-22 07:42:59 +0100
commitd8aec9d9f129e6879ae0669623981892deff86f2 (patch)
tree0c8e70bbb9eae59cc1503773965fd8ad5ee9062b /ui
parent4c77ee12da78d0e2222ac9f6fd067f1d451da5cb (diff)
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display: add -display spice-app launching a Spice client
Add a new display backend that will configure Spice to allow a remote client to control QEMU in a similar fashion as other QEMU display backend/UI like GTK. For this to work, it will set up Spice server with a unix socket, and register a VC chardev that will be exposed as Spice ports. A QMP monitor is also exposed as a Spice port, this allows the remote client fuller qemu control and state handling. - doesn't handle VC set_echo() - this doesn't seem a strong requirement, very few front-end use it - spice options can be tweaked with other -spice arguments - Windows support shouldn't be hard to do, but will probably use a TCP port instead - we may want to watch the child process to quit automatically if it crashed Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Tested-by: Victor Toso <victortoso@redhat.com> Message-id: 20190221110703.5775-12-marcandre.lureau@redhat.com [ kraxel: squash incremental fix ] Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'ui')
-rw-r--r--ui/Makefile.objs5
-rw-r--r--ui/spice-app.c202
2 files changed, 207 insertions, 0 deletions
diff --git a/ui/Makefile.objs b/ui/Makefile.objs
index 7f8b3da..fe1a7ae 100644
--- a/ui/Makefile.objs
+++ b/ui/Makefile.objs
@@ -49,6 +49,11 @@ curses.mo-objs := curses.o
curses.mo-cflags := $(CURSES_CFLAGS)
curses.mo-libs := $(CURSES_LIBS)
+common-obj-$(call land,$(CONFIG_SPICE),$(CONFIG_GIO)) += spice-app.mo
+spice-app.mo-objs := spice-app.o
+spice-app.mo-cflags := $(GIO_CFLAGS)
+spice-app.mo-libs := $(GIO_LIBS)
+
common-obj-$(CONFIG_OPENGL) += shader.o
common-obj-$(CONFIG_OPENGL) += console-gl.o
common-obj-$(CONFIG_OPENGL) += egl-helpers.o
diff --git a/ui/spice-app.c b/ui/spice-app.c
new file mode 100644
index 0000000..925b27b
--- /dev/null
+++ b/ui/spice-app.c
@@ -0,0 +1,202 @@
+/*
+ * QEMU external Spice client display driver
+ *
+ * Copyright (c) 2018 Marc-André Lureau <marcandre.lureau@redhat.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "qemu/osdep.h"
+
+#include <gio/gio.h>
+
+#include "qemu-common.h"
+#include "ui/console.h"
+#include "qemu/config-file.h"
+#include "qemu/option.h"
+#include "qemu/cutils.h"
+#include "qapi/error.h"
+#include "io/channel-command.h"
+#include "chardev/spice.h"
+#include "sysemu/sysemu.h"
+
+static const char *tmp_dir;
+static char *app_dir;
+static char *sock_path;
+
+typedef struct VCChardev {
+ SpiceChardev parent;
+} VCChardev;
+
+#define TYPE_CHARDEV_VC "chardev-vc"
+#define VC_CHARDEV(obj) OBJECT_CHECK(VCChardev, (obj), TYPE_CHARDEV_VC)
+
+static ChardevBackend *
+chr_spice_backend_new(void)
+{
+ ChardevBackend *be = g_new0(ChardevBackend, 1);
+
+ be->type = CHARDEV_BACKEND_KIND_SPICEPORT;
+ be->u.spiceport.data = g_new0(ChardevSpicePort, 1);
+
+ return be;
+}
+
+static void vc_chr_open(Chardev *chr,
+ ChardevBackend *backend,
+ bool *be_opened,
+ Error **errp)
+{
+ ChardevBackend *be;
+ const char *fqdn = NULL;
+
+ if (strstart(chr->label, "serial", NULL)) {
+ fqdn = "org.qemu.console.serial.0";
+ } else if (strstart(chr->label, "parallel", NULL)) {
+ fqdn = "org.qemu.console.parallel.0";
+ } else if (strstart(chr->label, "compat_monitor", NULL)) {
+ fqdn = "org.qemu.monitor.hmp.0";
+ }
+
+ be = chr_spice_backend_new();
+ be->u.spiceport.data->fqdn = fqdn ?
+ g_strdup(fqdn) : g_strdup_printf("org.qemu.console.%s", chr->label);
+ qemu_chr_open_spice_port(chr, be, be_opened, errp);
+ qapi_free_ChardevBackend(be);
+}
+
+static void vc_chr_set_echo(Chardev *chr, bool echo)
+{
+ /* TODO: set echo for frontends QMP and qtest */
+}
+
+static void char_vc_class_init(ObjectClass *oc, void *data)
+{
+ ChardevClass *cc = CHARDEV_CLASS(oc);
+
+ cc->parse = qemu_chr_parse_vc;
+ cc->open = vc_chr_open;
+ cc->chr_set_echo = vc_chr_set_echo;
+}
+
+static const TypeInfo char_vc_type_info = {
+ .name = TYPE_CHARDEV_VC,
+ .parent = TYPE_CHARDEV_SPICEPORT,
+ .instance_size = sizeof(VCChardev),
+ .class_init = char_vc_class_init,
+};
+
+static void spice_app_atexit(void)
+{
+ if (sock_path) {
+ unlink(sock_path);
+ }
+ if (tmp_dir) {
+ rmdir(tmp_dir);
+ }
+ g_free(sock_path);
+ g_free(app_dir);
+}
+
+static void spice_app_display_early_init(DisplayOptions *opts)
+{
+ QemuOpts *qopts;
+ ChardevBackend *be = chr_spice_backend_new();
+ GError *err = NULL;
+
+ if (opts->has_full_screen) {
+ error_report("spice-app full-screen isn't supported yet.");
+ exit(1);
+ }
+ if (opts->has_window_close) {
+ error_report("spice-app window-close isn't supported yet.");
+ exit(1);
+ }
+
+ atexit(spice_app_atexit);
+
+ if (qemu_name) {
+ app_dir = g_build_filename(g_get_user_runtime_dir(),
+ "qemu", qemu_name, NULL);
+ if (g_mkdir_with_parents(app_dir, S_IRWXU) < -1) {
+ error_report("Failed to create directory %s: %s",
+ app_dir, strerror(errno));
+ exit(1);
+ }
+ } else {
+ app_dir = g_dir_make_tmp(NULL, &err);
+ tmp_dir = app_dir;
+ if (err) {
+ error_report("Failed to create temporary directory: %s",
+ err->message);
+ exit(1);
+ }
+ }
+
+ type_register(&char_vc_type_info);
+
+ sock_path = g_strjoin("", app_dir, "/", "spice.sock", NULL);
+ qopts = qemu_opts_create(qemu_find_opts("spice"), NULL, 0, &error_abort);
+ qemu_opt_set(qopts, "disable-ticketing", "on", &error_abort);
+ qemu_opt_set(qopts, "unix", "on", &error_abort);
+ qemu_opt_set(qopts, "addr", sock_path, &error_abort);
+ qemu_opt_set(qopts, "image-compression", "off", &error_abort);
+ qemu_opt_set(qopts, "streaming-video", "off", &error_abort);
+ qemu_opt_set(qopts, "gl", opts->has_gl ? "on" : "off", &error_abort);
+ display_opengl = opts->has_gl;
+
+ be->u.spiceport.data->fqdn = g_strdup("org.qemu.monitor.qmp.0");
+ qemu_chardev_new("org.qemu.monitor.qmp", TYPE_CHARDEV_SPICEPORT,
+ be, NULL, &error_abort);
+ qopts = qemu_opts_create(qemu_find_opts("mon"),
+ NULL, 0, &error_fatal);
+ qemu_opt_set(qopts, "chardev", "org.qemu.monitor.qmp", &error_abort);
+ qemu_opt_set(qopts, "mode", "control", &error_abort);
+
+ qapi_free_ChardevBackend(be);
+}
+
+static void spice_app_display_init(DisplayState *ds, DisplayOptions *opts)
+{
+ GError *err = NULL;
+ gchar *uri;
+
+ uri = g_strjoin("", "spice+unix://", app_dir, "/", "spice.sock", NULL);
+ info_report("Launching display with URI: %s", uri);
+ g_app_info_launch_default_for_uri(uri, NULL, &err);
+ if (err) {
+ error_report("Failed to launch %s URI: %s", uri, err->message);
+ error_report("You need a capable Spice client, "
+ "such as virt-viewer 8.0");
+ exit(1);
+ }
+ g_free(uri);
+}
+
+static QemuDisplay qemu_display_spice_app = {
+ .type = DISPLAY_TYPE_SPICE_APP,
+ .early_init = spice_app_display_early_init,
+ .init = spice_app_display_init,
+};
+
+static void register_spice_app(void)
+{
+ qemu_display_register(&qemu_display_spice_app);
+}
+
+type_init(register_spice_app);