--- /dev/null
+#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;
+}
+
+CharDriverState *qemu_chr_open_spice_vmc(const char *type)
+{
+ const char **psubtype = spice_server_char_device_recognized_subtypes();
+
+ if (type == NULL) {
+ fprintf(stderr, "spice-qemu-char: missing name parameter\n");
+ print_allowed_subtypes();
+ return NULL;
+ }
+ 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
+CharDriverState *qemu_chr_open_spice_port(const char *name)
+{
+ 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->spicevmc = g_new0(ChardevSpiceChannel, 1);
+ backend->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->spiceport = g_new0(ChardevSpicePort, 1);
+ backend->spiceport->fqdn = g_strdup(name);
+}
+
+static void register_types(void)
+{
+ register_char_driver("spicevmc", CHARDEV_BACKEND_KIND_SPICEVMC,
+ qemu_chr_parse_spice_vmc);
+ register_char_driver("spiceport", CHARDEV_BACKEND_KIND_SPICEPORT,
+ qemu_chr_parse_spice_port);
+}
+
+type_init(register_types);
Code Review / kvmfornfv.git / blobdiff