[Qemu-devel] [RFC][PATCH v6 13/23] virtagent: add agent_shutdown qmp/hmp commands

[Michael Roth <mdroth@linux.vnet.ibm.com>]

Provide monitor command to initiate guest reboot/halt/powerdown

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 hmp-commands.hx |   16 ++++++++++++++
 qmp-commands.hx |   32 +++++++++++++++++++++++++++++
 virtagent.c     |   59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 virtagent.h     |    2 +
 4 files changed, 109 insertions(+), 0 deletions(-)

diff --git a/hmp-commands.hx b/hmp-commands.hx
index f60c64f..0a8c500 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -1360,6 +1360,22 @@ STEXI
 View guest dmesg output
 ETEXI
 
+    {
+        .name       = "agent_shutdown",
+        .args_type  = "shutdown_type:s",
+        .params     = "[reboot|shutdown|poweroff]",
+        .help       = "Shutdown/reboot a guest locally",
+        .user_print = monitor_user_noop,
+        .mhandler.cmd_async = do_agent_shutdown,
+        .flags      = MONITOR_CMD_ASYNC,
+    },
+
+STEXI
+@item agent_shutdown
+@findex agent_shutdown
+Shutdown/reboot a guest locally
+ETEXI
+
 STEXI
 @end table
 ETEXI
diff --git a/qmp-commands.hx b/qmp-commands.hx
index 0db38bd..98d7270 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -863,6 +863,38 @@ Example:
 EQMP
 
     {
+        .name       = "agent_shutdown",
+        .args_type  = "shutdown_type:s",
+        .params     = "[reboot|shutdown|poweroff]",
+        .help       = "Shutdown/reboot the guest locally",
+        .user_print = monitor_user_noop,
+        .mhandler.cmd_async = do_agent_shutdown,
+        .flags      = MONITOR_CMD_ASYNC,
+    },
+
+STEXI
+@item agent_shutdown
+@findex agent_shutdown
+Shutdown/reboot the guest locally
+ETEXI
+SQMP
+agent_shutdown
+--------
+
+Shutdown the guest locally
+
+Arguments:
+
+(none)
+
+Example:
+
+-> { "execute": "agent_shutdown" }
+<- { "return": {} }
+
+EQMP
+
+    {
         .name       = "qmp_capabilities",
         .args_type  = "",
         .params     = "",
diff --git a/virtagent.c b/virtagent.c
index 0976afe..27700fb 100644
--- a/virtagent.c
+++ b/virtagent.c
@@ -344,3 +344,62 @@ int do_agent_viewdmesg(Monitor *mon, const QDict *mon_params,
     xmlrpc_DECREF(params);
     return ret;
 }
+
+static void do_agent_shutdown_cb(const char *resp_data,
+                                 size_t resp_data_len,
+                                 MonitorCompletion *mon_cb,
+                                 void *mon_data)
+{
+    xmlrpc_value *resp = NULL;
+    xmlrpc_env env;
+
+    TRACE("called");
+
+    if (resp_data == NULL) {
+        LOG("error handling RPC request");
+        goto out_no_resp;
+    }
+
+    xmlrpc_env_init(&env);
+    resp = xmlrpc_parse_response(&env, resp_data, resp_data_len);
+    if (va_rpc_has_error(&env)) {
+        LOG("RPC Failed (%i): %s\n", env.fault_code,
+            env.fault_string);
+        goto out_no_resp;
+    }
+
+    xmlrpc_DECREF(resp);
+out_no_resp:
+    if (mon_cb) {
+        mon_cb(mon_data, NULL);
+    }
+}
+
+/*
+ * do_agent_shutdown(): Shutdown a guest
+ */
+int do_agent_shutdown(Monitor *mon, const QDict *mon_params,
+                      MonitorCompletion cb, void *opaque)
+{
+    xmlrpc_env env;
+    xmlrpc_value *params;
+    const char *shutdown_type;
+    int ret;
+
+    TRACE("called");
+
+    xmlrpc_env_init(&env);
+    shutdown_type = qdict_get_str(mon_params, "shutdown_type");
+    params = xmlrpc_build_value(&env, "(s)", shutdown_type);
+    if (va_rpc_has_error(&env)) {
+        return -1;
+    }
+
+    ret = va_do_rpc(&env, "va.shutdown", params, do_agent_shutdown_cb, cb,
+                    opaque);
+    if (ret) {
+        qerror_report(QERR_VA_FAILED, ret, strerror(ret));
+    }
+    xmlrpc_DECREF(params);
+    return ret;
+}
diff --git a/virtagent.h b/virtagent.h
index b67abc3..8281b90 100644
--- a/virtagent.h
+++ b/virtagent.h
@@ -36,5 +36,7 @@ int do_agent_viewfile(Monitor *mon, const QDict *mon_params,
 void do_agent_viewdmesg_print(Monitor *mon, const QObject *qobject);
 int do_agent_viewdmesg(Monitor *mon, const QDict *mon_params,
                       MonitorCompletion cb, void *opaque);
+int do_agent_shutdown(Monitor *mon, const QDict *mon_params,
+                      MonitorCompletion cb, void *opaque);
 
 #endif /* VIRTAGENT_H */
-- 
1.7.0.4