qapi: Turn ShutdownCause into QAPI enum

Needed so the patch after next can add ShutdownCause to QMP events
SHUTDOWN and RESET.

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
Message-Id: <20181205110131.23049-2-d.csapak@proxmox.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

include/sysemu/sysemu.h

@@ -31,26 +31,6 @@ VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
 void qemu_del_vm_change_state_handler(VMChangeStateEntry *e);
 void vm_state_notify(int running, RunState state);
 
-/* Enumeration of various causes for shutdown. */
-typedef enum ShutdownCause {
-    SHUTDOWN_CAUSE_NONE,          /* No shutdown request pending */
-    SHUTDOWN_CAUSE_HOST_ERROR,    /* An error prevents further use of guest */
-    SHUTDOWN_CAUSE_HOST_QMP,      /* Reaction to a QMP command, like 'quit' */
-    SHUTDOWN_CAUSE_HOST_SIGNAL,   /* Reaction to a signal, such as SIGINT */
-    SHUTDOWN_CAUSE_HOST_UI,       /* Reaction to UI event, like window close */
-    SHUTDOWN_CAUSE_GUEST_SHUTDOWN,/* Guest shutdown/suspend request, via
-                                     ACPI or other hardware-specific means */
-    SHUTDOWN_CAUSE_GUEST_RESET,   /* Guest reset request, and command line
-                                     turns that into a shutdown */
-    SHUTDOWN_CAUSE_GUEST_PANIC,   /* Guest panicked, and command line turns
-                                     that into a shutdown */
-    SHUTDOWN_CAUSE_SUBSYSTEM_RESET,/* Partial guest reset that does not trigger
-                                      QMP events and ignores --no-reboot. This
-                                      is useful for sanitize hypercalls on s390
-                                      that are used during kexec/kdump/boot */
-    SHUTDOWN_CAUSE__MAX,
-} ShutdownCause;
-
 static inline bool shutdown_caused_by_guest(ShutdownCause cause)
 {
     return cause >= SHUTDOWN_CAUSE_GUEST_SHUTDOWN;

qapi/run-state.json

@@ -59,6 +59,40 @@
             'running', 'save-vm', 'shutdown', 'suspended', 'watchdog',
             'guest-panicked', 'colo', 'preconfig' ] }
 
+##
+# @ShutdownCause:
+#
+# An enumeration of reasons for a Shutdown.
+#
+# @none: No shutdown request pending
+#
+# @host-error: An error prevents further use of guest
+#
+# @host-qmp: Reaction to a QMP command, like 'quit'
+#
+# @host-signal: Reaction to a signal, such as SIGINT
+#
+# @host-ui: Reaction to a UI event, like window close
+#
+# @guest-shutdown: Guest shutdown/suspend request, via ACPI or other
+#                  hardware-specific means
+#
+# @guest-reset: Guest reset request, and command line turns that into
+#               a shutdown
+#
+# @guest-panic: Guest panicked, and command line turns that into a shutdown
+#
+# @subsystem-reset: Partial guest reset that does not trigger QMP events and
+#                  ignores --no-reboot. This is useful for sanitizing
+#                  hypercalls on s390 that are used during kexec/kdump/boot
+#
+##
+{ 'enum': 'ShutdownCause',
+  # Beware, shutdown_caused_by_guest() depends on enumeration order
+  'data': [ 'none', 'host-error', 'host-qmp', 'host-signal', 'host-ui',
+            'guest-shutdown', 'guest-reset', 'guest-panic',
+            'subsystem-reset'] }
+
 ##
 # @StatusInfo:
 #