switch chardev to QemuOpts: infrastructure, null device
start switching chardevs to QemuOpts. This patch adds the
infrastructure and converts the null device.
The patch brings two new functions:
qemu_chr_open_opts()
same as qemu_chr_open(), but uses QemuOpts instead of a
option char string.
qemu_chr_parse_compat()
accepts a traditional chardev option string, returns the
corresponding QemuOpts instance, to handle backward
compatibility.
The patch also adds a new -chardev switch which can be used to create
named+unconnected chardevs, like this:
-chardev null,id=test
This uses the new qemu_chr_open_opts. Thus with this patch alone only
the null device works. The other devices will follow ...
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/vl.c b/vl.c
index 8e5d9db..0446769 100644
--- a/vl.c
+++ b/vl.c
@@ -5281,6 +5281,16 @@
monitor_devices[monitor_device_index] = optarg;
monitor_device_index++;
break;
+ case QEMU_OPTION_chardev:
+ opts = qemu_opts_parse(&qemu_chardev_opts, optarg, "backend");
+ if (!opts) {
+ fprintf(stderr, "parse error: %s\n", optarg);
+ exit(1);
+ }
+ if (NULL == qemu_chr_open_opts(opts, NULL)) {
+ exit(1);
+ }
+ break;
case QEMU_OPTION_serial:
if (serial_device_index >= MAX_SERIAL_PORTS) {
fprintf(stderr, "qemu: too many serial ports\n");