sdcard: Use the ldst API

[qemu.git] / chardev / char-mux.c

diff --git a/chardev/char-mux.c b/chardev/char-mux.c
index 37d42c65c63d28e98d241538bf9352c1fee220d6..6055e76293fb49aff4ec81bf068ba0e776488230 100644 (file)
--- a/chardev/char-mux.c
+++ b/chardev/char-mux.c
@@ -21,12 +21,14 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
 #include "qemu/osdep.h"
 #include "qapi/error.h"
-#include "qemu-common.h"
-#include "sysemu/char.h"
+#include "qemu/option.h"
+#include "chardev/char.h"
 #include "sysemu/block-backend.h"
-#include "char-mux.h"
+#include "sysemu/sysemu.h"
+#include "chardev/char-mux.h"
 
 /* MUX driver for serial I/O splitting */
 
@@ -123,6 +125,15 @@ static void mux_chr_send_event(MuxChardev *d, int mux_nr, int event)
     }
 }
 
+static void mux_chr_be_event(Chardev *chr, int event)
+{
+    MuxChardev *d = MUX_CHARDEV(chr);
+
+    if (d->focus != -1) {
+        mux_chr_send_event(d, d->focus, event);
+    }
+}
+
 static int mux_proc_byte(Chardev *chr, MuxChardev *d, int ch)
 {
     if (d->term_got_escape) {
@@ -220,14 +231,12 @@ static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
         }
 }
 
-bool muxes_realized;
-
 void mux_chr_send_all_event(Chardev *chr, int event)
 {
     MuxChardev *d = MUX_CHARDEV(chr);
     int i;
 
-    if (!muxes_realized) {
+    if (!machine_init_done) {
         return;
     }
 
@@ -266,7 +275,7 @@ static void char_mux_finalize(Object *obj)
             be->chr = NULL;
         }
     }
-    qemu_chr_fe_deinit(&d->chr);
+    qemu_chr_fe_deinit(&d->chr, false);
 }
 
 void mux_chr_set_handlers(Chardev *chr, GMainContext *context)
@@ -278,6 +287,7 @@ void mux_chr_set_handlers(Chardev *chr, GMainContext *context)
                              mux_chr_can_read,
                              mux_chr_read,
                              mux_chr_event,
+                             NULL,
                              chr,
                              context, true);
 }
@@ -294,6 +304,7 @@ void mux_set_focus(Chardev *chr, int focus)
     }
 
     d->focus = focus;
+    chr->be = d->backends[focus];
     mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
 }
 
@@ -316,7 +327,7 @@ static void qemu_chr_open_mux(Chardev *chr,
     /* only default to opened state if we've realized the initial
      * set of muxes
      */
-    *be_opened = muxes_realized;
+    *be_opened = machine_init_done;
     qemu_chr_fe_init(&d->chr, drv, errp);
 }
 
@@ -336,6 +347,31 @@ static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
     mux->chardev = g_strdup(chardev);
 }
 
+/**
+ * Called after processing of default and command-line-specified
+ * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
+ * to a mux chardev. This is done here to ensure that
+ * output/prompts/banners are only displayed for the FE that has
+ * focus when initial command-line processing/machine init is
+ * completed.
+ *
+ * After this point, any new FE attached to any new or existing
+ * mux will receive CHR_EVENT_OPENED notifications for the BE
+ * immediately.
+ */
+static int open_muxes(Chardev *chr)
+{
+    /* send OPENED to all already-attached FEs */
+    mux_chr_send_all_event(chr, CHR_EVENT_OPENED);
+    /*
+     * mark mux as OPENED so any new FEs will immediately receive
+     * OPENED event
+     */
+    qemu_chr_be_event(chr, CHR_EVENT_OPENED);
+
+    return 0;
+}
+
 static void char_mux_class_init(ObjectClass *oc, void *data)
 {
     ChardevClass *cc = CHARDEV_CLASS(oc);
@@ -345,6 +381,8 @@ static void char_mux_class_init(ObjectClass *oc, void *data)
     cc->chr_write = mux_chr_write;
     cc->chr_accept_input = mux_chr_accept_input;
     cc->chr_add_watch = mux_chr_add_watch;
+    cc->chr_be_event = mux_chr_be_event;
+    cc->chr_machine_done = open_muxes;
 }
 
 static const TypeInfo char_mux_type_info = {