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qmp qemu-ga: Fix qemu-ga not to accept "control"

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Commit cf869d5317 "qmp: support out-of-band (oob) execution"
accidentally made qemu-ga accept and ignore "control".  Fix that.

Out-of-band execution in a monitor that doesn't support it now fails
with

    {"error": {"class": "GenericError", "desc": "QMP input member 'control' is unexpected"}}

instead of

    {"error": {"class": "GenericError", "desc": "Please enable out-of-band first for the session during capabilities negotiation"}}

The old description is suboptimal when out-of-band cannot not be
enabled, or the command doesn't support out-of-band execution.

The new description is a bit unspecific, but it'll do.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180703085358.13941-12-armbru@redhat.com>
This commit is contained in:
Markus Armbruster 2018-07-03 10:53:37 +02:00
parent d4d7ed731c
commit 674ed7228f
6 changed files with 24 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
include/qapi/qmp/dispatch.h
View File

@ -41,7 +41,6 @@ void qmp_register_command(QmpCommandList *cmds, const char *name,
QmpCommandFunc *fn, QmpCommandOptions options);
void qmp_unregister_command(QmpCommandList *cmds, const char *name);
QmpCommand *qmp_find_command(QmpCommandList *cmds, const char *name);
QObject *qmp_dispatch(QmpCommandList *cmds, QObject *request);
void qmp_disable_command(QmpCommandList *cmds, const char *name);
void qmp_enable_command(QmpCommandList *cmds, const char *name);
@ -49,7 +48,10 @@ bool qmp_command_is_enabled(const QmpCommand *cmd);
const char *qmp_command_name(const QmpCommand *cmd);
bool qmp_has_success_response(const QmpCommand *cmd);
QObject *qmp_build_error_object(Error *err);
QDict *qmp_dispatch_check_obj(const QObject *request, Error **errp);
QDict *qmp_dispatch_check_obj(const QObject *request, bool allow_oob,
Error **errp);
QObject *qmp_dispatch(QmpCommandList *cmds, QObject *request,
bool allow_oob);
bool qmp_is_oob(QDict *dict);
typedef void (*qmp_cmd_callback_fn)(QmpCommand *cmd, void *opaque);

9
monitor.c
View File

@ -1319,11 +1319,6 @@ static bool qmp_cmd_oob_check(Monitor *mon, QDict *req, Error **errp)
}
if (qmp_is_oob(req)) {
if (!qmp_oob_enabled(mon)) {
error_setg(errp, "Please enable out-of-band first "
"for the session during capabilities negotiation");
return false;
}
if (!(cmd->options & QCO_ALLOW_OOB)) {
error_setg(errp, "The command %s does not support OOB",
command);
@ -4195,7 +4190,7 @@ static void monitor_qmp_dispatch_one(QMPRequest *req_obj)
old_mon = cur_mon;
cur_mon = mon;
rsp = qmp_dispatch(mon->qmp.commands, req);
rsp = qmp_dispatch(mon->qmp.commands, req, qmp_oob_enabled(mon));
cur_mon = old_mon;
@ -4286,7 +4281,7 @@ static void handle_qmp_command(JSONMessageParser *parser, GQueue *tokens)
} /* else will fail qmp_dispatch() */
/* Check against the request in general layout */
qdict = qmp_dispatch_check_obj(req, &err);
qdict = qmp_dispatch_check_obj(req, qmp_oob_enabled(mon), &err);
if (!qdict) {
goto err;
}

14
qapi/qmp-dispatch.c
View File

@ -20,7 +20,8 @@
#include "qapi/qmp/qbool.h"
#include "sysemu/sysemu.h"
QDict *qmp_dispatch_check_obj(const QObject *request, Error **errp)
QDict *qmp_dispatch_check_obj(const QObject *request, bool allow_oob,
Error **errp)
{
const QDictEntry *ent;
const char *arg_name;
@ -52,7 +53,7 @@ QDict *qmp_dispatch_check_obj(const QObject *request, Error **errp)
"QMP input member 'arguments' must be an object");
return NULL;
}
} else if (!strcmp(arg_name, "control")) {
} else if (!strcmp(arg_name, "control") && allow_oob) {
if (qobject_type(arg_obj) != QTYPE_QDICT) {
error_setg(errp,
"QMP input member 'control' must be a dict");
@ -74,7 +75,7 @@ QDict *qmp_dispatch_check_obj(const QObject *request, Error **errp)
}
static QObject *do_qmp_dispatch(QmpCommandList *cmds, QObject *request,
Error **errp)
bool allow_oob, Error **errp)
{
Error *local_err = NULL;
const char *command;
@ -82,7 +83,7 @@ static QObject *do_qmp_dispatch(QmpCommandList *cmds, QObject *request,
QmpCommand *cmd;
QObject *ret = NULL;
dict = qmp_dispatch_check_obj(request, errp);
dict = qmp_dispatch_check_obj(request, allow_oob, errp);
if (!dict) {
return NULL;
}
@ -157,13 +158,14 @@ bool qmp_is_oob(QDict *dict)
return qbool_get_bool(bool_obj);
}
QObject *qmp_dispatch(QmpCommandList *cmds, QObject *request)
QObject *qmp_dispatch(QmpCommandList *cmds, QObject *request,
bool allow_oob)
{
Error *err = NULL;
QObject *ret;
QDict *rsp;
ret = do_qmp_dispatch(cmds, request, &err);
ret = do_qmp_dispatch(cmds, request, allow_oob, &err);
rsp = qdict_new();
if (err) {

2
qga/main.c
View File

@ -586,7 +586,7 @@ static void process_command(GAState *s, QDict *req)
g_assert(req);
g_debug("processing command");
rsp = qmp_dispatch(&ga_commands, QOBJECT(req));
rsp = qmp_dispatch(&ga_commands, QOBJECT(req), false);
if (rsp) {
ret = send_response(s, rsp);
if (ret < 0) {

9
tests/test-qga.c
View File

@ -245,16 +245,17 @@ static void test_qga_invalid_id(gconstpointer fix)
static void test_qga_invalid_oob(gconstpointer fix)
{
/* FIXME "control" is ignored; it should be rejected */
const TestFixture *fixture = fix;
QDict *ret;
QDict *ret, *error;
const char *class;
ret = qmp_fd(fixture->fd, "{'execute': 'guest-ping',"
" 'control': {'run-oob': true}}");
g_assert_nonnull(ret);
qmp_assert_no_error(ret);
qdict_get_qdict(ret, "return");
error = qdict_get_qdict(ret, "error");
class = qdict_get_try_str(error, "class");
g_assert_cmpstr(class, ==, "GenericError");
qobject_unref(ret);
}

8
tests/test-qmp-cmds.c
View File

@ -102,7 +102,7 @@ static void test_dispatch_cmd(void)
qdict_put_str(req, "execute", "user_def_cmd");
resp = qmp_dispatch(&qmp_commands, QOBJECT(req));
resp = qmp_dispatch(&qmp_commands, QOBJECT(req), false);
assert(resp != NULL);
assert(!qdict_haskey(qobject_to(QDict, resp), "error"));
@ -119,7 +119,7 @@ static void test_dispatch_cmd_failure(void)
qdict_put_str(req, "execute", "user_def_cmd2");
resp = qmp_dispatch(&qmp_commands, QOBJECT(req));
resp = qmp_dispatch(&qmp_commands, QOBJECT(req), false);
assert(resp != NULL);
assert(qdict_haskey(qobject_to(QDict, resp), "error"));
@ -133,7 +133,7 @@ static void test_dispatch_cmd_failure(void)
qdict_put_str(req, "execute", "user_def_cmd");
resp = qmp_dispatch(&qmp_commands, QOBJECT(req));
resp = qmp_dispatch(&qmp_commands, QOBJECT(req), false);
assert(resp != NULL);
assert(qdict_haskey(qobject_to(QDict, resp), "error"));
@ -147,7 +147,7 @@ static QObject *test_qmp_dispatch(QDict *req)
QDict *resp;
QObject *ret;
resp_obj = qmp_dispatch(&qmp_commands, QOBJECT(req));
resp_obj = qmp_dispatch(&qmp_commands, QOBJECT(req), false);
assert(resp_obj);
resp = qobject_to(QDict, resp_obj);
assert(resp && !qdict_haskey(resp, "error"));