qcow2: Inform block layer about discard boundaries

[mirror_qemu.git] / qemu-char.c

diff --git a/qemu-char.c b/qemu-char.c
index 7c529b2b482dc336048b48a0acd0ce3c1f81fb89..90e96271dd7a8c4bb17f41f9386060c019c430f6 100644 (file)
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -786,6 +786,13 @@ static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
     return d->drv->chr_add_watch(d->drv, cond);
 }
 
+static void mux_chr_close(struct CharDriverState *chr)
+{
+    MuxDriver *d = chr->opaque;
+
+    g_free(d);
+}
+
 static CharDriverState *qemu_chr_open_mux(const char *id,
                                           ChardevBackend *backend,
                                           ChardevReturn *ret, Error **errp)
@@ -810,6 +817,7 @@ static CharDriverState *qemu_chr_open_mux(const char *id,
     chr->opaque = d;
     d->drv = drv;
     d->focus = -1;
+    chr->chr_close = mux_chr_close;
     chr->chr_write = mux_chr_write;
     chr->chr_update_read_handler = mux_chr_update_read_handler;
     chr->chr_accept_input = mux_chr_accept_input;
@@ -1215,6 +1223,9 @@ static CharDriverState *qemu_chr_open_stdio(const char *id,
     sigaction(SIGCONT, &act, NULL);
 
     chr = qemu_chr_open_fd(0, 1, common, errp);
+    if (!chr) {
+        return NULL;
+    }
     chr->chr_close = qemu_chr_close_stdio;
     chr->chr_set_echo = qemu_chr_set_echo_stdio;
     if (opts->has_signal) {
@@ -1671,6 +1682,9 @@ static CharDriverState *qemu_chr_open_tty_fd(int fd,
 
     tty_serial_init(fd, 115200, 'N', 8, 1);
     chr = qemu_chr_open_fd(fd, fd, backend, errp);
+    if (!chr) {
+        return NULL;
+    }
     chr->chr_ioctl = tty_serial_ioctl;
     chr->chr_close = qemu_chr_close_tty;
     return chr;
@@ -3082,6 +3096,7 @@ static void tcp_chr_tls_init(CharDriverState *chr)
     if (tioc == NULL) {
         error_free(err);
         tcp_chr_disconnect(chr);
+        return;
     }
     object_unref(OBJECT(s->ioc));
     s->ioc = QIO_CHANNEL(tioc);
@@ -3168,7 +3183,9 @@ static int tcp_chr_wait_connected(CharDriverState *chr, Error **errp)
     TCPCharDriver *s = chr->opaque;
     QIOChannelSocket *sioc;
 
-    while (!s->connected) {
+    /* It can't wait on s->connected, since it is set asynchronously
+     * in TLS and telnet cases, only wait for an accepted socket */
+    while (!s->ioc) {
         if (s->is_listen) {
             fprintf(stderr, "QEMU waiting for connection on: %s\n",
                     chr->filename);