From e7980021a52658198f04024cb762f09aac607e97 Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Mon, 14 Oct 2013 13:35:20 +0200
Subject: [PATCH 13/18] qemu-char: add -chardev mux support

RH-Author: Gerd Hoffmann <kraxel@redhat.com>
Message-id: <1381757723-23134-13-git-send-email-kraxel@redhat.com>
Patchwork-id: 54857
O-Subject: [RHEL-7 qemu-kvm PATCH 12/15] qemu-char: add -chardev mux support
Bugzilla: 922010
RH-Acked-by: Hans de Goede <hdegoede@redhat.com>
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>

Allow to explicitly create mux chardevs on the command line,
like you can using QMP.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(cherry picked from commit bb6fb7c0857aeda7982ac14460328edf3c29cfc8)

Conflicts:
	qemu-char.c
---
 qemu-char.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 qemu-char.c |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/qemu-char.c b/qemu-char.c
index 145fd30..fc1b21a 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -3142,6 +3142,19 @@ static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
     }
 }
 
+static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
+                               Error **errp)
+{
+    const char *chardev = qemu_opt_get(opts, "chardev");
+
+    if (chardev == NULL) {
+        error_setg(errp, "chardev: mux: no chardev given");
+        return;
+    }
+    backend->mux = g_new0(ChardevMux, 1);
+    backend->mux->chardev = g_strdup(chardev);
+}
+
 typedef struct CharDriver {
     const char *name;
     /* old, pre qapi */
@@ -3509,6 +3522,9 @@ QemuOptsList qemu_chardev_opts = {
         },{
             .name = "size",
             .type = QEMU_OPT_SIZE,
+        },{
+            .name = "chardev",
+            .type = QEMU_OPT_STRING,
         },
         { /* end of list */ }
     },
@@ -3800,6 +3816,8 @@ static void register_types(void)
     register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
     register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
                               qemu_chr_parse_pipe);
+    register_char_driver_qapi("mux", CHARDEV_BACKEND_KIND_MUX,
+                              qemu_chr_parse_mux);
     /* Bug-compatibility: */
     register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
                               qemu_chr_parse_ringbuf);
-- 
1.7.1