Merge remote-tracking branch 'remotes/berrange/tags/pull-qio-2016-10-27-1' into staging

Merge qio 2016/10/27 v1

# gpg: Signature made Thu 27 Oct 2016 13:54:03 BST
# gpg:                using RSA key 0xBE86EBB415104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>"
# gpg:                 aka "Daniel P. Berrange <berrange@redhat.com>"
# Primary key fingerprint: DAF3 A6FD B26B 6291 2D0E  8E3F BE86 EBB4 1510 4FDF

* remotes/berrange/tags/pull-qio-2016-10-27-1:
  main: set names for main loop sources created
  vnc: set name for all I/O channels created
  migration: set name for all I/O channels created
  char: set name for all I/O channels created
  nbd: set name for all I/O channels created
  io: add ability to set a name for IO channels
  io: Add a QIOChannelSocket cleanup test
  io: set LISTEN flag explicitly for listen sockets
  io: Introduce a qio_channel_set_feature() helper
  io: Use qio_channel_has_feature() where applicable
  io: Fix double shift usages on QIOChannel features

Conflicts:
	qemu-char.c
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

block/nbd.c

@@ -307,6 +307,7 @@ static QIOChannelSocket *nbd_establish_connection(SocketAddress *saddr,
     Error *local_err = NULL;
 
     sioc = qio_channel_socket_new();
+    qio_channel_set_name(QIO_CHANNEL(sioc), "nbd-client");
 
     qio_channel_socket_connect_sync(sioc,
                                     saddr,

blockdev-nbd.c

@@ -44,6 +44,7 @@ static gboolean nbd_accept(QIOChannel *ioc, GIOCondition condition,
         return TRUE;
     }
 
+    qio_channel_set_name(QIO_CHANNEL(cioc), "nbd-server");
     nbd_client_new(NULL, cioc,
                    nbd_server->tlscreds, NULL,
                    nbd_client_put);
@@ -111,6 +112,8 @@ void qmp_nbd_server_start(SocketAddress *addr,
     nbd_server = g_new0(NBDServerData, 1);
     nbd_server->watch = -1;
     nbd_server->listen_ioc = qio_channel_socket_new();
+    qio_channel_set_name(QIO_CHANNEL(nbd_server->listen_ioc),
+                         "nbd-listener");
     if (qio_channel_socket_listen_sync(
             nbd_server->listen_ioc, addr, errp) < 0) {
         goto error;

include/glib-compat.h

@@ -304,4 +304,15 @@ static inline void g_slist_free_full(GSList *list, GDestroyNotify free_func)
 }
 #endif
 
+#if !GLIB_CHECK_VERSION(2, 26, 0)
+static inline void g_source_set_name(GSource *source, const char *name)
+{
+    /* This is just a debugging aid, so leaving it a no-op */
+}
+static inline void g_source_set_name_by_id(guint tag, const char *name)
+{
+    /* This is just a debugging aid, so leaving it a no-op */
+}
+#endif
+
 #endif

include/io/channel.h

@@ -40,9 +40,9 @@ typedef struct QIOChannelClass QIOChannelClass;
 typedef enum QIOChannelFeature QIOChannelFeature;
 
 enum QIOChannelFeature {
-    QIO_CHANNEL_FEATURE_FD_PASS  = (1 << 0),
-    QIO_CHANNEL_FEATURE_SHUTDOWN = (1 << 1),
-    QIO_CHANNEL_FEATURE_LISTEN   = (1 << 2),
+    QIO_CHANNEL_FEATURE_FD_PASS,
+    QIO_CHANNEL_FEATURE_SHUTDOWN,
+    QIO_CHANNEL_FEATURE_LISTEN,
 };
 
 
@@ -79,6 +79,7 @@ typedef gboolean (*QIOChannelFunc)(QIOChannel *ioc,
 struct QIOChannel {
     Object parent;
     unsigned int features; /* bitmask of QIOChannelFeatures */
+    char *name;
 #ifdef _WIN32
     HANDLE event; /* For use with GSource on Win32 */
 #endif
@@ -148,6 +149,28 @@ struct QIOChannelClass {
 bool qio_channel_has_feature(QIOChannel *ioc,
                              QIOChannelFeature feature);
 
+/**
+ * qio_channel_set_feature:
+ * @ioc: the channel object
+ * @feature: the feature to set support for
+ *
+ * Add channel support for the feature named in @feature.
+ */
+void qio_channel_set_feature(QIOChannel *ioc,
+                             QIOChannelFeature feature);
+
+/**
+ * qio_channel_set_name:
+ * @ioc: the channel object
+ * @name: the name of the channel
+ *
+ * Sets the name of the channel, which serves as an aid
+ * to debugging. The name is used when creating GSource
+ * watches for this channel.
+ */
+void qio_channel_set_name(QIOChannel *ioc,
+                          const char *name);
+
 /**
  * qio_channel_readv_full:
  * @ioc: the channel object

io/channel-socket.c

@@ -55,7 +55,7 @@ qio_channel_socket_new(void)
     sioc->fd = -1;
 
     ioc = QIO_CHANNEL(sioc);
-    ioc->features |= (1 << QIO_CHANNEL_FEATURE_SHUTDOWN);
+    qio_channel_set_feature(ioc, QIO_CHANNEL_FEATURE_SHUTDOWN);
 
 #ifdef WIN32
     ioc->event = CreateEvent(NULL, FALSE, FALSE, NULL);
@@ -72,9 +72,6 @@ qio_channel_socket_set_fd(QIOChannelSocket *sioc,
                           int fd,
                           Error **errp)
 {
-    int val;
-    socklen_t len = sizeof(val);
-
     if (sioc->fd != -1) {
         error_setg(errp, "Socket is already open");
         return -1;
@@ -107,13 +104,9 @@ qio_channel_socket_set_fd(QIOChannelSocket *sioc,
 #ifndef WIN32
     if (sioc->localAddr.ss_family == AF_UNIX) {
         QIOChannel *ioc = QIO_CHANNEL(sioc);
-        ioc->features |= (1 << QIO_CHANNEL_FEATURE_FD_PASS);
+        qio_channel_set_feature(ioc, QIO_CHANNEL_FEATURE_FD_PASS);
     }
 #endif /* WIN32 */
-    if (getsockopt(fd, SOL_SOCKET, SO_ACCEPTCONN, &val, &len) == 0 && val) {
-        QIOChannel *ioc = QIO_CHANNEL(sioc);
-        ioc->features |= (1 << QIO_CHANNEL_FEATURE_LISTEN);
-    }
 
     return 0;
 
@@ -220,6 +213,7 @@ int qio_channel_socket_listen_sync(QIOChannelSocket *ioc,
         close(fd);
         return -1;
     }
+    qio_channel_set_feature(QIO_CHANNEL(ioc), QIO_CHANNEL_FEATURE_LISTEN);
 
     return 0;
 }
@@ -380,7 +374,8 @@ qio_channel_socket_accept(QIOChannelSocket *ioc,
 
 #ifndef WIN32
     if (cioc->localAddr.ss_family == AF_UNIX) {
-        QIO_CHANNEL(cioc)->features |= (1 << QIO_CHANNEL_FEATURE_FD_PASS);
+        QIOChannel *ioc_local = QIO_CHANNEL(cioc);
+        qio_channel_set_feature(ioc_local, QIO_CHANNEL_FEATURE_FD_PASS);
     }
 #endif /* WIN32 */
 
@@ -403,7 +398,8 @@ static void qio_channel_socket_finalize(Object *obj)
     QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(obj);
 
     if (ioc->fd != -1) {
-        if (QIO_CHANNEL(ioc)->features & QIO_CHANNEL_FEATURE_LISTEN) {
+        QIOChannel *ioc_local = QIO_CHANNEL(ioc);
+        if (qio_channel_has_feature(ioc_local, QIO_CHANNEL_FEATURE_LISTEN)) {
             Error *err = NULL;
 
             socket_listen_cleanup(ioc->fd, &err);

io/channel-tls.c

@@ -111,8 +111,8 @@ qio_channel_tls_new_client(QIOChannel *master,
     ioc = QIO_CHANNEL(tioc);
 
     tioc->master = master;
-    if (master->features & (1 << QIO_CHANNEL_FEATURE_SHUTDOWN)) {
-        ioc->features |= (1 << QIO_CHANNEL_FEATURE_SHUTDOWN);
+    if (qio_channel_has_feature(master, QIO_CHANNEL_FEATURE_SHUTDOWN)) {
+        qio_channel_set_feature(ioc, QIO_CHANNEL_FEATURE_SHUTDOWN);
     }
     object_ref(OBJECT(master));
 

io/channel-websock.c

@@ -497,8 +497,8 @@ qio_channel_websock_new_server(QIOChannel *master)
     ioc = QIO_CHANNEL(wioc);
 
     wioc->master = master;
-    if (master->features & (1 << QIO_CHANNEL_FEATURE_SHUTDOWN)) {
-        ioc->features |= (1 << QIO_CHANNEL_FEATURE_SHUTDOWN);
+    if (qio_channel_has_feature(master, QIO_CHANNEL_FEATURE_SHUTDOWN)) {
+        qio_channel_set_feature(ioc, QIO_CHANNEL_FEATURE_SHUTDOWN);
     }
     object_ref(OBJECT(master));
 

io/channel.c

@@ -30,6 +30,21 @@ bool qio_channel_has_feature(QIOChannel *ioc,
 }
 
 
+void qio_channel_set_feature(QIOChannel *ioc,
+                             QIOChannelFeature feature)
+{
+    ioc->features |= (1 << feature);
+}
+
+
+void qio_channel_set_name(QIOChannel *ioc,
+                          const char *name)
+{
+    g_free(ioc->name);
+    ioc->name = g_strdup(name);
+}
+
+
 ssize_t qio_channel_readv_full(QIOChannel *ioc,
                                const struct iovec *iov,
                                size_t niov,
@@ -40,7 +55,7 @@ ssize_t qio_channel_readv_full(QIOChannel *ioc,
     QIOChannelClass *klass = QIO_CHANNEL_GET_CLASS(ioc);
 
     if ((fds || nfds) &&
-        !(ioc->features & (1 << QIO_CHANNEL_FEATURE_FD_PASS))) {
+        !qio_channel_has_feature(ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
         error_setg_errno(errp, EINVAL,
                          "Channel does not support file descriptor passing");
         return -1;
@@ -60,7 +75,7 @@ ssize_t qio_channel_writev_full(QIOChannel *ioc,
     QIOChannelClass *klass = QIO_CHANNEL_GET_CLASS(ioc);
 
     if ((fds || nfds) &&
-        !(ioc->features & (1 << QIO_CHANNEL_FEATURE_FD_PASS))) {
+        !qio_channel_has_feature(ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
         error_setg_errno(errp, EINVAL,
                          "Channel does not support file descriptor passing");
         return -1;
@@ -129,7 +144,13 @@ GSource *qio_channel_create_watch(QIOChannel *ioc,
                                   GIOCondition condition)
 {
     QIOChannelClass *klass = QIO_CHANNEL_GET_CLASS(ioc);
-    return klass->io_create_watch(ioc, condition);
+    GSource *ret = klass->io_create_watch(ioc, condition);
+
+    if (ioc->name) {
+        g_source_set_name(ret, ioc->name);
+    }
+
+    return ret;
 }
 
 
@@ -275,24 +296,24 @@ void qio_channel_wait(QIOChannel *ioc,
 }
 
 
-#ifdef _WIN32
 static void qio_channel_finalize(Object *obj)
 {
     QIOChannel *ioc = QIO_CHANNEL(obj);
 
+    g_free(ioc->name);
+
+#ifdef _WIN32
     if (ioc->event) {
         CloseHandle(ioc->event);
     }
-}
 #endif
+}
 
 static const TypeInfo qio_channel_info = {
     .parent = TYPE_OBJECT,
     .name = TYPE_QIO_CHANNEL,
     .instance_size = sizeof(QIOChannel),
-#ifdef _WIN32
     .instance_finalize = qio_channel_finalize,
-#endif
     .abstract = true,
     .class_size = sizeof(QIOChannelClass),
 };

main-loop.c

@@ -161,9 +161,11 @@ int qemu_init_main_loop(Error **errp)
     qemu_notify_bh = qemu_bh_new(notify_event_cb, NULL);
     gpollfds = g_array_new(FALSE, FALSE, sizeof(GPollFD));
     src = aio_get_g_source(qemu_aio_context);
+    g_source_set_name(src, "aio-context");
     g_source_attach(src, NULL);
     g_source_unref(src);
     src = iohandler_get_g_source();
+    g_source_set_name(src, "io-handler");
     g_source_attach(src, NULL);
     g_source_unref(src);
     return 0;

migration/exec.c

@@ -38,6 +38,7 @@ void exec_start_outgoing_migration(MigrationState *s, const char *command, Error
         return;
     }
 
+    qio_channel_set_name(ioc, "migration-exec-outgoing");
     migration_channel_connect(s, ioc, NULL);
     object_unref(OBJECT(ioc));
 }
@@ -64,6 +65,7 @@ void exec_start_incoming_migration(const char *command, Error **errp)
         return;
     }
 
+    qio_channel_set_name(ioc, "migration-exec-incoming");
     qio_channel_add_watch(ioc,
                           G_IO_IN,
                           exec_accept_incoming_migration,

migration/fd.c

@@ -38,6 +38,7 @@ void fd_start_outgoing_migration(MigrationState *s, const char *fdname, Error **
         return;
     }
 
+    qio_channel_set_name(QIO_CHANNEL(ioc), "migration-fd-outgoing");
     migration_channel_connect(s, ioc, NULL);
     object_unref(OBJECT(ioc));
 }
@@ -65,6 +66,7 @@ void fd_start_incoming_migration(const char *infd, Error **errp)
         return;
     }
 
+    qio_channel_set_name(QIO_CHANNEL(ioc), "migration-fd-incoming");
     qio_channel_add_watch(ioc,
                           G_IO_IN,
                           fd_accept_incoming_migration,

migration/migration.c

@@ -1567,6 +1567,7 @@ static int postcopy_start(MigrationState *ms, bool *old_vm_running)
      * to do this we use a qemu_buf to hold the whole of the device state.
      */
     bioc = qio_channel_buffer_new(4096);
+    qio_channel_set_name(QIO_CHANNEL(bioc), "migration-postcopy-buffer");
     fb = qemu_fopen_channel_output(QIO_CHANNEL(bioc));
     object_unref(OBJECT(bioc));
 

migration/savevm.c

@@ -1631,6 +1631,7 @@ static int loadvm_handle_cmd_packaged(MigrationIncomingState *mis)
     }
 
     bioc = qio_channel_buffer_new(length);
+    qio_channel_set_name(QIO_CHANNEL(bioc), "migration-loadvm-buffer");
     ret = qemu_get_buffer(mis->from_src_file,
                           bioc->data,
                           length);
@@ -2122,6 +2123,7 @@ void qmp_xen_save_devices_state(const char *filename, Error **errp)
     if (!ioc) {
         goto the_end;
     }
+    qio_channel_set_name(QIO_CHANNEL(ioc), "migration-xen-save-state");
     f = qemu_fopen_channel_output(QIO_CHANNEL(ioc));
     ret = qemu_save_device_state(f);
     qemu_fclose(f);
@@ -2154,6 +2156,7 @@ void qmp_xen_load_devices_state(const char *filename, Error **errp)
     if (!ioc) {
         return;
     }
+    qio_channel_set_name(QIO_CHANNEL(ioc), "migration-xen-load-state");
     f = qemu_fopen_channel_input(QIO_CHANNEL(ioc));
 
     migration_incoming_state_new(f);

migration/socket.c

@@ -100,6 +100,7 @@ static void socket_start_outgoing_migration(MigrationState *s,
         data->hostname = g_strdup(saddr->u.inet.data->host);
     }
 
+    qio_channel_set_name(QIO_CHANNEL(sioc), "migration-socket-outgoing");
     qio_channel_socket_connect_async(sioc,
                                      saddr,
                                      socket_outgoing_migration,
@@ -146,6 +147,7 @@ static gboolean socket_accept_incoming_migration(QIOChannel *ioc,
 
     trace_migration_socket_incoming_accepted();
 
+    qio_channel_set_name(QIO_CHANNEL(sioc), "migration-socket-incoming");
     migration_channel_process_incoming(migrate_get_current(),
                                        QIO_CHANNEL(sioc));
     object_unref(OBJECT(sioc));
@@ -162,6 +164,9 @@ static void socket_start_incoming_migration(SocketAddress *saddr,
 {
     QIOChannelSocket *listen_ioc = qio_channel_socket_new();
 
+    qio_channel_set_name(QIO_CHANNEL(listen_ioc),
+                         "migration-socket-listener");
+
     if (qio_channel_socket_listen_sync(listen_ioc, saddr, errp) < 0) {
         object_unref(OBJECT(listen_ioc));
         qapi_free_SocketAddress(saddr);

migration/tls.c

@@ -99,6 +99,7 @@ void migration_tls_channel_process_incoming(MigrationState *s,
     }
 
     trace_migration_tls_incoming_handshake_start();
+    qio_channel_set_name(QIO_CHANNEL(tioc), "migration-tls-incoming");
     qio_channel_tls_handshake(tioc,
                               migration_tls_incoming_handshake,
                               NULL,
@@ -154,6 +155,7 @@ void migration_tls_channel_connect(MigrationState *s,
     }
 
     trace_migration_tls_outgoing_handshake_start(hostname);
+    qio_channel_set_name(QIO_CHANNEL(tioc), "migration-tls-outgoing");
     qio_channel_tls_handshake(tioc,
                               migration_tls_outgoing_handshake,
                               s,

nbd/client.c

@@ -387,6 +387,7 @@ static QIOChannel *nbd_receive_starttls(QIOChannel *ioc,
     if (!tioc) {
         return NULL;
     }
+    qio_channel_set_name(QIO_CHANNEL(tioc), "nbd-client-tls");
     data.loop = g_main_loop_new(g_main_context_default(), FALSE);
     TRACE("Starting TLS handshake");
     qio_channel_tls_handshake(tioc,

nbd/server.c

@@ -349,6 +349,7 @@ static QIOChannel *nbd_negotiate_handle_starttls(NBDClient *client,
         return NULL;
     }
 
+    qio_channel_set_name(QIO_CHANNEL(tioc), "nbd-server-tls");
     TRACE("Starting TLS handshake");
     data.loop = g_main_loop_new(g_main_context_default(), FALSE);
     qio_channel_tls_handshake(tioc,

qemu-char.c

@@ -1075,7 +1075,8 @@ static GSourceFuncs io_watch_poll_funcs = {
 };
 
 /* Can only be used for read */
-static guint io_add_watch_poll(QIOChannel *ioc,
+static guint io_add_watch_poll(CharDriverState *chr,
+                               QIOChannel *ioc,
                                IOCanReadHandler *fd_can_read,
                                QIOChannelFunc fd_read,
                                gpointer user_data,
@@ -1083,6 +1084,7 @@ static guint io_add_watch_poll(QIOChannel *ioc,
 {
     IOWatchPoll *iwp;
     int tag;
+    char *name;
 
     iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs,
                                        sizeof(IOWatchPoll));
@@ -1093,6 +1095,10 @@ static guint io_add_watch_poll(QIOChannel *ioc,
     iwp->src = NULL;
     iwp->context = context;
 
+    name = g_strdup_printf("chardev-iowatch-%s", chr->label);
+    g_source_set_name((GSource *)iwp, name);
+    g_free(name);
+
     tag = g_source_attach(&iwp->parent, context);
     g_source_unref(&iwp->parent);
     return tag;
@@ -1232,7 +1238,7 @@ static void fd_chr_update_read_handler(CharDriverState *chr,
 
     remove_fd_in_watch(chr);
     if (s->ioc_in) {
-        chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
+        chr->fd_in_tag = io_add_watch_poll(chr, s->ioc_in,
                                            fd_chr_read_poll,
                                            fd_chr_read, chr,
                                            context);
@@ -1261,6 +1267,7 @@ static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
 {
     CharDriverState *chr;
     FDCharDriver *s;
+    char *name;
 
     chr = qemu_chr_alloc(backend, errp);
     if (!chr) {
@@ -1268,7 +1275,13 @@ static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
     }
     s = g_new0(FDCharDriver, 1);
     s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
+    name = g_strdup_printf("chardev-file-in-%s", chr->label);
+    qio_channel_set_name(QIO_CHANNEL(s->ioc_in), name);
+    g_free(name);
     s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
+    name = g_strdup_printf("chardev-file-out-%s", chr->label);
+    qio_channel_set_name(QIO_CHANNEL(s->ioc_out), name);
+    g_free(name);
     qemu_set_nonblock(fd_out);
     s->chr = chr;
     chr->opaque = s;
@@ -1448,6 +1461,7 @@ static gboolean pty_chr_timer(gpointer opaque)
 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
 {
     PtyCharDriver *s = chr->opaque;
+    char *name;
 
     if (s->timer_tag) {
         g_source_remove(s->timer_tag);
@@ -1455,10 +1469,14 @@ static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
     }
 
     if (ms == 1000) {
+        name = g_strdup_printf("pty-timer-secs-%s", chr->label);
         s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
     } else {
+        name = g_strdup_printf("pty-timer-ms-%s", chr->label);
         s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
     }
+    g_source_set_name_by_id(s->timer_tag, name);
+    g_free(name);
 }
 
 /* Called with chr_write_lock held.  */
@@ -1587,7 +1605,7 @@ static void pty_chr_state(CharDriverState *chr, int connected)
             s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
         }
         if (!chr->fd_in_tag) {
-            chr->fd_in_tag = io_add_watch_poll(s->ioc,
+            chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
                                                pty_chr_read_poll,
                                                pty_chr_read,
                                                chr, NULL);
@@ -1622,6 +1640,7 @@ static CharDriverState *qemu_chr_open_pty(const char *id,
     int master_fd, slave_fd;
     char pty_name[PATH_MAX];
     ChardevCommon *common = backend->u.pty.data;
+    char *name;
 
     master_fd = qemu_openpty_raw(&slave_fd, pty_name);
     if (master_fd < 0) {
@@ -1654,6 +1673,9 @@ static CharDriverState *qemu_chr_open_pty(const char *id,
     *be_opened = false;
 
     s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
+    name = g_strdup_printf("chardev-pty-%s", chr->label);
+    qio_channel_set_name(QIO_CHANNEL(s->ioc), name);
+    g_free(name);
     s->timer_tag = 0;
 
     return chr;
@@ -2744,7 +2766,7 @@ static void udp_chr_update_read_handler(CharDriverState *chr,
 
     remove_fd_in_watch(chr);
     if (s->ioc) {
-        chr->fd_in_tag = io_add_watch_poll(s->ioc,
+        chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
                                            udp_chr_read_poll,
                                            udp_chr_read, chr,
                                            context);
@@ -2822,9 +2844,13 @@ static gboolean socket_reconnect_timeout(gpointer opaque);
 static void qemu_chr_socket_restart_timer(CharDriverState *chr)
 {
     TCPCharDriver *s = chr->opaque;
+    char *name;
     assert(s->connected == 0);
     s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
                                                socket_reconnect_timeout, chr);
+    name = g_strdup_printf("chardev-socket-reconnect-%s", chr->label);
+    g_source_set_name_by_id(s->reconnect_timer, name);
+    g_free(name);
 }
 
 static void check_report_connect_error(CharDriverState *chr,
@@ -3149,7 +3175,7 @@ static void tcp_chr_connect(void *opaque)
 
     s->connected = 1;
     if (s->ioc) {
-        chr->fd_in_tag = io_add_watch_poll(s->ioc,
+        chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
                                            tcp_chr_read_poll,
                                            tcp_chr_read,
                                            chr, NULL);
@@ -3168,7 +3194,7 @@ static void tcp_chr_update_read_handler(CharDriverState *chr,
 
     remove_fd_in_watch(chr);
     if (s->ioc) {
-        chr->fd_in_tag = io_add_watch_poll(s->ioc,
+        chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
                                            tcp_chr_read_poll,
                                            tcp_chr_read, chr,
                                            context);
@@ -3266,6 +3292,7 @@ static void tcp_chr_tls_init(CharDriverState *chr)
     TCPCharDriver *s = chr->opaque;
     QIOChannelTLS *tioc;
     Error *err = NULL;
+    gchar *name;
 
     if (s->is_listen) {
         tioc = qio_channel_tls_new_server(
@@ -3283,6 +3310,11 @@ static void tcp_chr_tls_init(CharDriverState *chr)
         tcp_chr_disconnect(chr);
         return;
     }
+    name = g_strdup_printf("chardev-tls-%s-%s",
+                           s->is_listen ? "server" : "client",
+                           chr->label);
+    qio_channel_set_name(QIO_CHANNEL(tioc), name);
+    g_free(name);
     object_unref(OBJECT(s->ioc));
     s->ioc = QIO_CHANNEL(tioc);
 
@@ -3293,6 +3325,19 @@ static void tcp_chr_tls_init(CharDriverState *chr)
 }
 
 
+static void tcp_chr_set_client_ioc_name(CharDriverState *chr,
+                                        QIOChannelSocket *sioc)
+{
+    TCPCharDriver *s = chr->opaque;
+    char *name;
+    name = g_strdup_printf("chardev-tcp-%s-%s",
+                           s->is_listen ? "server" : "client",
+                           chr->label);
+    qio_channel_set_name(QIO_CHANNEL(sioc), name);
+    g_free(name);
+
+}
+
 static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
 {
     TCPCharDriver *s = chr->opaque;
@@ -3338,6 +3383,7 @@ static int tcp_chr_add_client(CharDriverState *chr, int fd)
     if (!sioc) {
         return -1;
     }
+    tcp_chr_set_client_ioc_name(chr, sioc);
     ret = tcp_chr_new_client(chr, sioc);
     object_unref(OBJECT(sioc));
     return ret;
@@ -3379,6 +3425,7 @@ static int tcp_chr_wait_connected(CharDriverState *chr, Error **errp)
             qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
         } else {
             sioc = qio_channel_socket_new();
+            tcp_chr_set_client_ioc_name(chr, sioc);
             if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
                 object_unref(OBJECT(sioc));
                 return -1;
@@ -4586,6 +4633,7 @@ static gboolean socket_reconnect_timeout(gpointer opaque)
     }
 
     sioc = qio_channel_socket_new();
+    tcp_chr_set_client_ioc_name(chr, sioc);
     qio_channel_socket_connect_async(sioc, s->addr,
                                      qemu_chr_socket_connected,
                                      chr, NULL);
@@ -4688,12 +4736,19 @@ static CharDriverState *qmp_chardev_open_socket(const char *id,
 
     if (s->reconnect_time) {
         sioc = qio_channel_socket_new();
+        tcp_chr_set_client_ioc_name(chr, sioc);
         qio_channel_socket_connect_async(sioc, s->addr,
                                          qemu_chr_socket_connected,
                                          chr, NULL);
     } else {
         if (s->is_listen) {
+            char *name;
             sioc = qio_channel_socket_new();
+
+            name = g_strdup_printf("chardev-tcp-listener-%s", chr->label);
+            qio_channel_set_name(QIO_CHANNEL(sioc), name);
+            g_free(name);
+
             if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
                 goto error;
             }
@@ -4735,6 +4790,8 @@ static CharDriverState *qmp_chardev_open_udp(const char *id,
     ChardevUdp *udp = backend->u.udp.data;
     ChardevCommon *common = qapi_ChardevUdp_base(udp);
     QIOChannelSocket *sioc = qio_channel_socket_new();
+    char *name;
+    CharDriverState *chr;
 
     if (qio_channel_socket_dgram_sync(sioc,
                                       udp->local, udp->remote,
@@ -4742,7 +4799,13 @@ static CharDriverState *qmp_chardev_open_udp(const char *id,
         object_unref(OBJECT(sioc));
         return NULL;
     }
-    return qemu_chr_open_udp(sioc, common, be_opened, errp);
+    chr = qemu_chr_open_udp(sioc, common, be_opened, errp);
+
+    name = g_strdup_printf("chardev-udp-%s", chr->label);
+    qio_channel_set_name(QIO_CHANNEL(sioc), name);
+    g_free(name);
+
+    return chr;
 }
 
 

tests/test-io-channel-socket.c

@@ -491,6 +491,37 @@ static void test_io_channel_unix_fd_pass(void)
     }
     g_free(fdrecv);
 }
+
+static void test_io_channel_unix_listen_cleanup(void)
+{
+    QIOChannelSocket *ioc;
+    struct sockaddr_un un;
+    int sock;
+
+#define TEST_SOCKET "test-io-channel-socket.sock"
+
+    ioc = qio_channel_socket_new();
+
+    /* Manually bind ioc without calling the qio api to avoid setting
+     * the LISTEN feature */
+    sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
+    memset(&un, 0, sizeof(un));
+    un.sun_family = AF_UNIX;
+    snprintf(un.sun_path, sizeof(un.sun_path), "%s", TEST_SOCKET);
+    unlink(TEST_SOCKET);
+    bind(sock, (struct sockaddr *)&un, sizeof(un));
+    ioc->fd = sock;
+    ioc->localAddrLen = sizeof(ioc->localAddr);
+    getsockname(sock, (struct sockaddr *)&ioc->localAddr,
+                &ioc->localAddrLen);
+
+    g_assert(g_file_test(TEST_SOCKET, G_FILE_TEST_EXISTS));
+    object_unref(OBJECT(ioc));
+    g_assert(g_file_test(TEST_SOCKET, G_FILE_TEST_EXISTS));
+
+    unlink(TEST_SOCKET);
+}
+
 #endif /* _WIN32 */
 
 
@@ -562,6 +593,8 @@ int main(int argc, char **argv)
                     test_io_channel_unix_async);
     g_test_add_func("/io/channel/socket/unix-fd-pass",
                     test_io_channel_unix_fd_pass);
+    g_test_add_func("/io/channel/socket/unix-listen-cleanup",
+                    test_io_channel_unix_listen_cleanup);
 #endif /* _WIN32 */
 
     return g_test_run();

ui/vnc-auth-vencrypt.c

@@ -116,6 +116,7 @@ static int protocol_client_vencrypt_auth(VncState *vs, uint8_t *data, size_t len
             return 0;
         }
 
+        qio_channel_set_name(QIO_CHANNEL(tls), "vnc-server-tls");
         VNC_DEBUG("Start TLS VeNCrypt handshake process\n");
         object_unref(OBJECT(vs->ioc));
         vs->ioc = QIO_CHANNEL(tls);

ui/vnc-ws.c

@@ -67,6 +67,8 @@ gboolean vncws_tls_handshake_io(QIOChannel *ioc G_GNUC_UNUSED,
         return TRUE;
     }
 
+    qio_channel_set_name(QIO_CHANNEL(tls), "vnc-ws-server-tls");
+
     VNC_DEBUG("Start TLS WS handshake process\n");
     object_unref(OBJECT(vs->ioc));
     vs->ioc = QIO_CHANNEL(tls);
@@ -113,6 +115,7 @@ gboolean vncws_handshake_io(QIOChannel *ioc G_GNUC_UNUSED,
     }
 
     wioc = qio_channel_websock_new_server(vs->ioc);
+    qio_channel_set_name(QIO_CHANNEL(wioc), "vnc-ws-server-websock");
 
     object_unref(OBJECT(vs->ioc));
     vs->ioc = QIO_CHANNEL(wioc);

ui/vnc.c

@@ -3100,6 +3100,9 @@ static gboolean vnc_listen_io(QIOChannel *ioc,
 
     sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(ioc), &err);
     if (sioc != NULL) {
+        qio_channel_set_name(QIO_CHANNEL(sioc),
+                             ioc != QIO_CHANNEL(vd->lsock) ?
+                             "vnc-ws-server" : "vnc-server");
         qio_channel_set_delay(QIO_CHANNEL(sioc), false);
         vnc_connect(vd, sioc, false,
                     ioc != QIO_CHANNEL(vd->lsock));
@@ -3788,6 +3791,7 @@ void vnc_display_open(const char *id, Error **errp)
         }
         vd->is_unix = saddr->type == SOCKET_ADDRESS_KIND_UNIX;
         sioc = qio_channel_socket_new();
+        qio_channel_set_name(QIO_CHANNEL(sioc), "vnc-reverse");
         if (qio_channel_socket_connect_sync(sioc, saddr, errp) < 0) {
             goto fail;
         }
@@ -3795,6 +3799,7 @@ void vnc_display_open(const char *id, Error **errp)
         object_unref(OBJECT(sioc));
     } else {
         vd->lsock = qio_channel_socket_new();
+        qio_channel_set_name(QIO_CHANNEL(vd->lsock), "vnc-listen");
         if (qio_channel_socket_listen_sync(vd->lsock, saddr, errp) < 0) {
             goto fail;
         }
@@ -3802,6 +3807,7 @@ void vnc_display_open(const char *id, Error **errp)
 
         if (ws_enabled) {
             vd->lwebsock = qio_channel_socket_new();
+            qio_channel_set_name(QIO_CHANNEL(vd->lwebsock), "vnc-ws-listen");
             if (qio_channel_socket_listen_sync(vd->lwebsock,
                                                wsaddr, errp) < 0) {
                 object_unref(OBJECT(vd->lsock));
@@ -3845,6 +3851,7 @@ void vnc_display_add_client(const char *id, int csock, bool skipauth)
 
     sioc = qio_channel_socket_new_fd(csock, NULL);
     if (sioc) {
+        qio_channel_set_name(QIO_CHANNEL(sioc), "vnc-server");
         vnc_connect(vd, sioc, skipauth, false);
         object_unref(OBJECT(sioc));
     }