391 lines
10 KiB
C
391 lines
10 KiB
C
#include "config-host.h"
|
|
#include "trace.h"
|
|
#include "ui/qemu-spice.h"
|
|
#include "sysemu/char.h"
|
|
#include <spice.h>
|
|
#include <spice/protocol.h>
|
|
|
|
#include "qemu/osdep.h"
|
|
|
|
typedef struct SpiceCharDriver {
|
|
CharDriverState* chr;
|
|
SpiceCharDeviceInstance sin;
|
|
bool active;
|
|
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);
|
|
ssize_t out = 0;
|
|
ssize_t last_out;
|
|
uint8_t* p = (uint8_t*)buf;
|
|
|
|
while (len > 0) {
|
|
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);
|
|
out += last_out;
|
|
len -= last_out;
|
|
p += last_out;
|
|
}
|
|
|
|
trace_spice_vmc_write(out, len + out);
|
|
return out;
|
|
}
|
|
|
|
static int vmc_read(SpiceCharDeviceInstance *sin, uint8_t *buf, int len)
|
|
{
|
|
SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin);
|
|
int bytes = MIN(len, 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;
|
|
scd->blocked = false;
|
|
}
|
|
trace_spice_vmc_read(bytes, len);
|
|
return bytes;
|
|
}
|
|
|
|
#if SPICE_SERVER_VERSION >= 0x000c02
|
|
static void vmc_event(SpiceCharDeviceInstance *sin, uint8_t event)
|
|
{
|
|
SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin);
|
|
int chr_event;
|
|
|
|
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
|
|
|
|
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;
|
|
}
|
|
|
|
qemu_chr_be_event(scd->chr,
|
|
connected ? CHR_EVENT_OPENED : CHR_EVENT_CLOSED);
|
|
}
|
|
|
|
static SpiceCharDeviceInterface vmc_interface = {
|
|
.base.type = SPICE_INTERFACE_CHAR_DEVICE,
|
|
.base.description = "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,
|
|
#if SPICE_SERVER_VERSION >= 0x000c02
|
|
.event = vmc_event,
|
|
#endif
|
|
#if SPICE_SERVER_VERSION >= 0x000c06
|
|
.flags = SPICE_CHAR_DEVICE_NOTIFY_WRITABLE,
|
|
#endif
|
|
};
|
|
|
|
|
|
static void vmc_register_interface(SpiceCharDriver *scd)
|
|
{
|
|
if (scd->active) {
|
|
return;
|
|
}
|
|
scd->sin.base.sif = &vmc_interface.base;
|
|
qemu_spice_add_interface(&scd->sin.base);
|
|
scd->active = true;
|
|
trace_spice_vmc_register_interface(scd);
|
|
}
|
|
|
|
static void vmc_unregister_interface(SpiceCharDriver *scd)
|
|
{
|
|
if (!scd->active) {
|
|
return;
|
|
}
|
|
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;
|
|
|
|
assert(s->datalen == 0);
|
|
s->datapos = buf;
|
|
s->datalen = len;
|
|
spice_server_char_device_wakeup(&s->sin);
|
|
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;
|
|
|
|
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_vmc_set_fe_open(struct CharDriverState *chr, int fe_open)
|
|
{
|
|
SpiceCharDriver *s = chr->opaque;
|
|
if (fe_open) {
|
|
vmc_register_interface(s);
|
|
} else {
|
|
vmc_unregister_interface(s);
|
|
}
|
|
}
|
|
|
|
static void spice_port_set_fe_open(struct CharDriverState *chr, int fe_open)
|
|
{
|
|
#if SPICE_SERVER_VERSION >= 0x000c02
|
|
SpiceCharDriver *s = chr->opaque;
|
|
|
|
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)
|
|
{
|
|
const char** psubtype;
|
|
int i;
|
|
|
|
fprintf(stderr, "allowed names: ");
|
|
for(i=0, psubtype = spice_server_char_device_recognized_subtypes();
|
|
*psubtype != NULL; ++psubtype, ++i) {
|
|
if (i == 0) {
|
|
fprintf(stderr, "%s", *psubtype);
|
|
} else {
|
|
fprintf(stderr, ", %s", *psubtype);
|
|
}
|
|
}
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
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;
|
|
|
|
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 (*psubtype == NULL) {
|
|
fprintf(stderr, "spice-qemu-char: unsupported type: %s\n", type);
|
|
print_allowed_subtypes();
|
|
return NULL;
|
|
}
|
|
|
|
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);
|
|
|
|
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
|
|
|
|
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);
|