#include "config-host.h"
#include "trace.h"
#include "ui/qemu-spice.h"
-#include "qemu-char.h"
+#include "sysemu/char.h"
#include <spice.h>
-#include <spice-experimental.h>
+#include <spice/protocol.h>
-#include "osdep.h"
-
-#define dprintf(_scd, _level, _fmt, ...) \
- do { \
- static unsigned __dprintf_counter = 0; \
- if (_scd->debug >= _level) { \
- fprintf(stderr, "scd: %3d: " _fmt, ++__dprintf_counter, ## __VA_ARGS__);\
- } \
- } while (0)
-
-#define VMC_MAX_HOST_WRITE 2048
+#include "qemu/osdep.h"
typedef struct SpiceCharDriver {
CharDriverState* chr;
SpiceCharDeviceInstance sin;
- char *subtype;
bool active;
- uint8_t *buffer;
- uint8_t *datapos;
- ssize_t bufsize, datalen;
- uint32_t debug;
+ bool blocked;
+ const uint8_t *datapos;
+ int datalen;
+ QLIST_ENTRY(SpiceCharDriver) next;
} SpiceCharDriver;
+typedef struct SpiceCharSource {
+ GSource source;
+ SpiceCharDriver *scd;
+} SpiceCharSource;
+
+static QLIST_HEAD(, SpiceCharDriver) spice_chars =
+ QLIST_HEAD_INITIALIZER(spice_chars);
+
static int vmc_write(SpiceCharDeviceInstance *sin, const uint8_t *buf, int len)
{
SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin);
uint8_t* p = (uint8_t*)buf;
while (len > 0) {
- last_out = MIN(len, VMC_MAX_HOST_WRITE);
- if (qemu_chr_be_can_write(scd->chr) < last_out) {
+ int can_write = qemu_chr_be_can_write(scd->chr);
+ last_out = MIN(len, can_write);
+ if (last_out <= 0) {
break;
}
qemu_chr_be_write(scd->chr, p, last_out);
p += last_out;
}
- dprintf(scd, 3, "%s: %zu/%zd\n", __func__, out, len + out);
trace_spice_vmc_write(out, len + out);
return out;
}
SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin);
int bytes = MIN(len, scd->datalen);
- dprintf(scd, 2, "%s: %p %d/%d/%zd\n", __func__, scd->datapos, len, bytes, scd->datalen);
if (bytes > 0) {
memcpy(buf, scd->datapos, bytes);
scd->datapos += bytes;
scd->datalen -= bytes;
assert(scd->datalen >= 0);
- if (scd->datalen == 0) {
- scd->datapos = 0;
- }
+ }
+ if (scd->datalen == 0) {
+ scd->datapos = 0;
+ scd->blocked = false;
}
trace_spice_vmc_read(bytes, len);
return bytes;
}
-static void vmc_state(SpiceCharDeviceInstance *sin, int connected)
+#if SPICE_SERVER_VERSION >= 0x000c02
+static void vmc_event(SpiceCharDeviceInstance *sin, uint8_t event)
{
SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin);
+ int chr_event;
-#if SPICE_SERVER_VERSION < 0x000901
- /*
- * spice-server calls the state callback for the agent channel when the
- * spice client connects / disconnects. Given that not the client but
- * the server is doing the parsing of the messages this is wrong as the
- * server is still listening. Worse, this causes the parser in the server
- * to go out of sync, so we ignore state calls for subtype vdagent
- * spicevmc chardevs. For the full story see:
- * http://lists.freedesktop.org/archives/spice-devel/2011-July/004837.html
- */
- if (strcmp(sin->subtype, "vdagent") == 0) {
+ switch (event) {
+ case SPICE_PORT_EVENT_BREAK:
+ chr_event = CHR_EVENT_BREAK;
+ break;
+ default:
return;
}
+
+ trace_spice_vmc_event(chr_event);
+ qemu_chr_be_event(scd->chr, chr_event);
+}
#endif
- if ((scd->chr->opened && connected) ||
- (!scd->chr->opened && !connected)) {
+static void vmc_state(SpiceCharDeviceInstance *sin, int connected)
+{
+ SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin);
+
+ if ((scd->chr->be_open && connected) ||
+ (!scd->chr->be_open && !connected)) {
return;
}
.state = vmc_state,
.write = vmc_write,
.read = vmc_read,
+#if SPICE_SERVER_VERSION >= 0x000c02
+ .event = vmc_event,
+#endif
+#if SPICE_SERVER_VERSION >= 0x000c06
+ .flags = SPICE_CHAR_DEVICE_NOTIFY_WRITABLE,
+#endif
};
if (scd->active) {
return;
}
- dprintf(scd, 1, "%s\n", __func__);
scd->sin.base.sif = &vmc_interface.base;
qemu_spice_add_interface(&scd->sin.base);
scd->active = true;
if (!scd->active) {
return;
}
- dprintf(scd, 1, "%s\n", __func__);
spice_server_remove_interface(&scd->sin.base);
scd->active = false;
trace_spice_vmc_unregister_interface(scd);
}
+static gboolean spice_char_source_prepare(GSource *source, gint *timeout)
+{
+ SpiceCharSource *src = (SpiceCharSource *)source;
+
+ *timeout = -1;
+
+ return !src->scd->blocked;
+}
+
+static gboolean spice_char_source_check(GSource *source)
+{
+ SpiceCharSource *src = (SpiceCharSource *)source;
+
+ return !src->scd->blocked;
+}
+
+static gboolean spice_char_source_dispatch(GSource *source,
+ GSourceFunc callback, gpointer user_data)
+{
+ GIOFunc func = (GIOFunc)callback;
+
+ return func(NULL, G_IO_OUT, user_data);
+}
+
+static GSourceFuncs SpiceCharSourceFuncs = {
+ .prepare = spice_char_source_prepare,
+ .check = spice_char_source_check,
+ .dispatch = spice_char_source_dispatch,
+};
+
+static GSource *spice_chr_add_watch(CharDriverState *chr, GIOCondition cond)
+{
+ SpiceCharDriver *scd = chr->opaque;
+ SpiceCharSource *src;
+
+ assert(cond & G_IO_OUT);
+
+ src = (SpiceCharSource *)g_source_new(&SpiceCharSourceFuncs,
+ sizeof(SpiceCharSource));
+ src->scd = scd;
+
+ return (GSource *)src;
+}
static int spice_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
{
SpiceCharDriver *s = chr->opaque;
+ int read_bytes;
- dprintf(s, 2, "%s: %d\n", __func__, len);
- vmc_register_interface(s);
assert(s->datalen == 0);
- if (s->bufsize < len) {
- s->bufsize = len;
- s->buffer = g_realloc(s->buffer, s->bufsize);
- }
- memcpy(s->buffer, buf, len);
- s->datapos = s->buffer;
+ s->datapos = buf;
s->datalen = len;
spice_server_char_device_wakeup(&s->sin);
- return len;
+ read_bytes = len - s->datalen;
+ if (read_bytes != len) {
+ /* We'll get passed in the unconsumed data with the next call */
+ s->datalen = 0;
+ s->datapos = NULL;
+ s->blocked = true;
+ }
+ return read_bytes;
}
static void spice_chr_close(struct CharDriverState *chr)
{
SpiceCharDriver *s = chr->opaque;
- printf("%s\n", __func__);
vmc_unregister_interface(s);
+ QLIST_REMOVE(s, next);
+
+ g_free((char *)s->sin.subtype);
+#if SPICE_SERVER_VERSION >= 0x000c02
+ g_free((char *)s->sin.portname);
+#endif
g_free(s);
}
-static void spice_chr_guest_open(struct CharDriverState *chr)
+static void spice_vmc_set_fe_open(struct CharDriverState *chr, int fe_open)
{
SpiceCharDriver *s = chr->opaque;
- vmc_register_interface(s);
+ if (fe_open) {
+ vmc_register_interface(s);
+ } else {
+ vmc_unregister_interface(s);
+ }
}
-static void spice_chr_guest_close(struct CharDriverState *chr)
+static void spice_port_set_fe_open(struct CharDriverState *chr, int fe_open)
{
+#if SPICE_SERVER_VERSION >= 0x000c02
SpiceCharDriver *s = chr->opaque;
- vmc_unregister_interface(s);
+
+ if (fe_open) {
+ spice_server_port_event(&s->sin, SPICE_PORT_EVENT_OPENED);
+ } else {
+ spice_server_port_event(&s->sin, SPICE_PORT_EVENT_CLOSED);
+ }
+#endif
+}
+
+static void spice_chr_fe_event(struct CharDriverState *chr, int event)
+{
+#if SPICE_SERVER_VERSION >= 0x000c02
+ SpiceCharDriver *s = chr->opaque;
+
+ spice_server_port_event(&s->sin, event);
+#endif
}
static void print_allowed_subtypes(void)
fprintf(stderr, "\n");
}
-CharDriverState *qemu_chr_open_spice(QemuOpts *opts)
+static void spice_chr_accept_input(struct CharDriverState *chr)
+{
+ SpiceCharDriver *s = chr->opaque;
+
+ spice_server_char_device_wakeup(&s->sin);
+}
+
+static CharDriverState *chr_open(const char *subtype,
+ void (*set_fe_open)(struct CharDriverState *, int))
+
{
CharDriverState *chr;
SpiceCharDriver *s;
- const char* name = qemu_opt_get(opts, "name");
- uint32_t debug = qemu_opt_get_number(opts, "debug", 0);
- const char** psubtype = spice_server_char_device_recognized_subtypes();
- const char *subtype = NULL;
- if (name == NULL) {
- fprintf(stderr, "spice-qemu-char: missing name parameter\n");
- print_allowed_subtypes();
- return NULL;
- }
- for(;*psubtype != NULL; ++psubtype) {
- if (strcmp(name, *psubtype) == 0) {
- subtype = *psubtype;
+ chr = qemu_chr_alloc();
+ s = g_malloc0(sizeof(SpiceCharDriver));
+ s->chr = chr;
+ s->active = false;
+ s->sin.subtype = g_strdup(subtype);
+ chr->opaque = s;
+ chr->chr_write = spice_chr_write;
+ chr->chr_add_watch = spice_chr_add_watch;
+ chr->chr_close = spice_chr_close;
+ chr->chr_set_fe_open = set_fe_open;
+ chr->explicit_be_open = true;
+ chr->chr_fe_event = spice_chr_fe_event;
+ chr->chr_accept_input = spice_chr_accept_input;
+
+ QLIST_INSERT_HEAD(&spice_chars, s, next);
+
+ return chr;
+}
+
+static CharDriverState *qemu_chr_open_spice_vmc(const char *id,
+ ChardevBackend *backend,
+ ChardevReturn *ret,
+ Error **errp)
+{
+ const char *type = backend->u.spicevmc->type;
+ const char **psubtype = spice_server_char_device_recognized_subtypes();
+
+ for (; *psubtype != NULL; ++psubtype) {
+ if (strcmp(type, *psubtype) == 0) {
break;
}
}
- if (subtype == NULL) {
- fprintf(stderr, "spice-qemu-char: unsupported name: %s\n", name);
+ if (*psubtype == NULL) {
+ fprintf(stderr, "spice-qemu-char: unsupported type: %s\n", type);
print_allowed_subtypes();
return NULL;
}
- chr = g_malloc0(sizeof(CharDriverState));
- s = g_malloc0(sizeof(SpiceCharDriver));
- s->chr = chr;
- s->debug = debug;
- s->active = false;
- s->sin.subtype = subtype;
- chr->opaque = s;
- chr->chr_write = spice_chr_write;
- chr->chr_close = spice_chr_close;
- chr->chr_guest_open = spice_chr_guest_open;
- chr->chr_guest_close = spice_chr_guest_close;
+ return chr_open(type, spice_vmc_set_fe_open);
+}
+
+#if SPICE_SERVER_VERSION >= 0x000c02
+static CharDriverState *qemu_chr_open_spice_port(const char *id,
+ ChardevBackend *backend,
+ ChardevReturn *ret,
+ Error **errp)
+{
+ const char *name = backend->u.spiceport->fqdn;
+ CharDriverState *chr;
+ SpiceCharDriver *s;
+
+ if (name == NULL) {
+ fprintf(stderr, "spice-qemu-char: missing name parameter\n");
+ return NULL;
+ }
+
+ chr = chr_open("port", spice_port_set_fe_open);
+ s = chr->opaque;
+ s->sin.portname = g_strdup(name);
-#if SPICE_SERVER_VERSION < 0x000901
- /* See comment in vmc_state() */
- if (strcmp(subtype, "vdagent") == 0) {
- qemu_chr_generic_open(chr);
+ return chr;
+}
+
+void qemu_spice_register_ports(void)
+{
+ SpiceCharDriver *s;
+
+ QLIST_FOREACH(s, &spice_chars, next) {
+ if (s->sin.portname == NULL) {
+ continue;
+ }
+ vmc_register_interface(s);
}
+}
#endif
- return chr;
+static void qemu_chr_parse_spice_vmc(QemuOpts *opts, ChardevBackend *backend,
+ Error **errp)
+{
+ const char *name = qemu_opt_get(opts, "name");
+
+ if (name == NULL) {
+ error_setg(errp, "chardev: spice channel: no name given");
+ return;
+ }
+ backend->u.spicevmc = g_new0(ChardevSpiceChannel, 1);
+ backend->u.spicevmc->type = g_strdup(name);
+}
+
+static void qemu_chr_parse_spice_port(QemuOpts *opts, ChardevBackend *backend,
+ Error **errp)
+{
+ const char *name = qemu_opt_get(opts, "name");
+
+ if (name == NULL) {
+ error_setg(errp, "chardev: spice port: no name given");
+ return;
+ }
+ backend->u.spiceport = g_new0(ChardevSpicePort, 1);
+ backend->u.spiceport->fqdn = g_strdup(name);
}
+
+static void register_types(void)
+{
+ register_char_driver("spicevmc", CHARDEV_BACKEND_KIND_SPICEVMC,
+ qemu_chr_parse_spice_vmc, qemu_chr_open_spice_vmc);
+ register_char_driver("spiceport", CHARDEV_BACKEND_KIND_SPICEPORT,
+ qemu_chr_parse_spice_port, qemu_chr_open_spice_port);
+}
+
+type_init(register_types);
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