* [Qemu-devel] [PATCH v2] qmp: expose list of supported character device backends
@ 2014-01-31 16:49 Martin Kletzander
2014-01-31 17:20 ` Eric Blake
0 siblings, 1 reply; 3+ messages in thread
From: Martin Kletzander @ 2014-01-31 16:49 UTC (permalink / raw)
To: qemu-devel; +Cc: Markus Armbruster, Anthony Liguori, Luiz Capitulino
Introduce 'query-chardev-backends' QMP command which lists all
supported character device backends.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
---
v2:
- Version changed from "1.8.0" to "2.0"
qapi-schema.json | 22 ++++++++++++++++++++++
qemu-char.c | 19 +++++++++++++++++++
qmp-commands.hx | 41 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 82 insertions(+)
diff --git a/qapi-schema.json b/qapi-schema.json
index 05ced9d..ebd278a 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -437,6 +437,28 @@
{ 'command': 'query-chardev', 'returns': ['ChardevInfo'] }
##
+# @ChardevBackendInfo:
+#
+# Information about a character device backend
+#
+# @name: The backend name
+#
+# Since: 2.0
+##
+{ 'type': 'ChardevBackendInfo', 'data': {'name': 'str'} }
+
+##
+# @query-chardev-backends:
+#
+# Returns information about character device backends.
+#
+# Returns: a list of @ChardevBackendInfo
+#
+# Since: 2.0
+##
+{ 'command': 'query-chardev-backends', 'returns': ['ChardevBackendInfo'] }
+
+##
# @DataFormat:
#
# An enumeration of data format.
diff --git a/qemu-char.c b/qemu-char.c
index 30c5a6a..c88f1c4 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -3432,6 +3432,25 @@ ChardevInfoList *qmp_query_chardev(Error **errp)
return chr_list;
}
+ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
+{
+ ChardevBackendInfoList *backend_list = NULL;
+ CharDriver *c = NULL;
+ GSList *i = NULL;
+
+ for (i = backends; i; i = i->next) {
+ ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
+ c = i->data;
+ info->value = g_malloc0(sizeof(*info->value));
+ info->value->name = g_strdup(c->name);
+
+ info->next = backend_list;
+ backend_list = info;
+ }
+
+ return backend_list;
+}
+
CharDriverState *qemu_chr_find(const char *name)
{
CharDriverState *chr;
diff --git a/qmp-commands.hx b/qmp-commands.hx
index cce6b81..c38964d 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -1924,6 +1924,47 @@ EQMP
},
SQMP
+query-chardev-backends
+-------------
+
+List available character device backends.
+
+Each backend is represented by a json-object, the returned value is a json-array
+of all backends.
+
+Each json-object contains:
+
+- "name": backend name (json-string)
+
+Example:
+
+-> { "execute": "query-chardev-backends" }
+<- {
+ "return":[
+ {
+ "name":"udp",
+ },
+ {
+ "name":"tcp",
+ },
+ {
+ "name":"unix",
+ },
+ {
+ "name":"spiceport",
+ }
+ ]
+ }
+
+EQMP
+
+ {
+ .name = "query-chardev-backends",
+ .args_type = "",
+ .mhandler.cmd_new = qmp_marshal_input_query_chardev_backends,
+ },
+
+SQMP
query-block
-----------
--
1.8.5.3
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] [PATCH v2] qmp: expose list of supported character device backends
2014-01-31 16:49 [Qemu-devel] [PATCH v2] qmp: expose list of supported character device backends Martin Kletzander
@ 2014-01-31 17:20 ` Eric Blake
2014-02-01 11:44 ` Martin Kletzander
0 siblings, 1 reply; 3+ messages in thread
From: Eric Blake @ 2014-01-31 17:20 UTC (permalink / raw)
To: Martin Kletzander, qemu-devel
Cc: Markus Armbruster, Anthony Liguori, Luiz Capitulino
[-- Attachment #1: Type: text/plain, Size: 1205 bytes --]
On 01/31/2014 09:49 AM, Martin Kletzander wrote:
> Introduce 'query-chardev-backends' QMP command which lists all
> supported character device backends.
>
> Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
> ---
> v2:
> - Version changed from "1.8.0" to "2.0"
>
> qapi-schema.json | 22 ++++++++++++++++++++++
> qemu-char.c | 19 +++++++++++++++++++
> qmp-commands.hx | 41 +++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 82 insertions(+)
> +
> +-> { "execute": "query-chardev-backends" }
> +<- {
> + "return":[
> + {
> + "name":"udp",
> + },
Sorry for not noticing earlier, but this is not valid JSON. Lose the
trailing comma after each "name":"value", since the last element in a
JSON struct is not permitted to have a comma.
> + {
> + "name":"tcp",
> + },
> + {
> + "name":"unix",
> + },
> + {
> + "name":"spiceport",
> + }
With that change to all four spots,
Reviewed-by: Eric Blake <eblake@redhat.com>
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] [PATCH v2] qmp: expose list of supported character device backends
2014-01-31 17:20 ` Eric Blake
@ 2014-02-01 11:44 ` Martin Kletzander
0 siblings, 0 replies; 3+ messages in thread
From: Martin Kletzander @ 2014-02-01 11:44 UTC (permalink / raw)
To: Eric Blake
Cc: Markus Armbruster, qemu-devel, Anthony Liguori, Luiz Capitulino
[-- Attachment #1: Type: text/plain, Size: 1444 bytes --]
On Fri, Jan 31, 2014 at 10:20:42AM -0700, Eric Blake wrote:
> On 01/31/2014 09:49 AM, Martin Kletzander wrote:
> > Introduce 'query-chardev-backends' QMP command which lists all
> > supported character device backends.
> >
> > Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
> > ---
> > v2:
> > - Version changed from "1.8.0" to "2.0"
> >
> > qapi-schema.json | 22 ++++++++++++++++++++++
> > qemu-char.c | 19 +++++++++++++++++++
> > qmp-commands.hx | 41 +++++++++++++++++++++++++++++++++++++++++
> > 3 files changed, 82 insertions(+)
>
> > +
> > +-> { "execute": "query-chardev-backends" }
> > +<- {
> > + "return":[
> > + {
> > + "name":"udp",
> > + },
>
> Sorry for not noticing earlier, but this is not valid JSON. Lose the
> trailing comma after each "name":"value", since the last element in a
> JSON struct is not permitted to have a comma.
>
At first, I had it as a list of strings, maybe that's why I left it
there by mistake, hopefully v3 will be OK.
Thanks for the review,
Martin
> > + {
> > + "name":"tcp",
> > + },
> > + {
> > + "name":"unix",
> > + },
> > + {
> > + "name":"spiceport",
> > + }
>
> With that change to all four spots,
>
> Reviewed-by: Eric Blake <eblake@redhat.com>
>
> --
> Eric Blake eblake redhat com +1-919-301-3266
> Libvirt virtualization library http://libvirt.org
>
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2014-01-31 16:49 [Qemu-devel] [PATCH v2] qmp: expose list of supported character device backends Martin Kletzander
2014-01-31 17:20 ` Eric Blake
2014-02-01 11:44 ` Martin Kletzander
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