Commit 77d1c3c6 authored by Martin Kletzander's avatar Martin Kletzander Committed by Luiz Capitulino
Browse files

qmp: expose list of supported character device backends 



Introduce 'query-chardev-backends' QMP command which lists all
supported character device backends.

Signed-off-by: default avatarMartin Kletzander <mkletzan@redhat.com>
Reviewed-by: default avatarEric Blake <eblake@redhat.com>
Signed-off-by: default avatarLuiz Capitulino <lcapitulino@redhat.com>
parent 84d18f06

qapi-schema.json

+22 −0
Original line number Diff line number Diff line
@@ -436,6 +436,28 @@ 
##

{ '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:

#

qemu-char.c

+19 −0
Original line number Diff line number Diff line
@@ -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;

qmp-commands.hx

+41 −0
Original line number Diff line number Diff line
@@ -1923,6 +1923,47 @@ EQMP 
        .mhandler.cmd_new = qmp_marshal_input_query_chardev,

    },



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

-----------