Adding upstream version 1:7.2+dfsg.upstream/1%7.2+dfsgupstream

Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>

1 files changed, 92 insertions, 0 deletions

diff --git a/hw/watchdog/watchdog.c b/hw/watchdog/watchdog.c
new file mode 100644
index 00000000..6c082a32
--- /dev/null
+++ b/hw/watchdog/watchdog.c
@@ -0,0 +1,92 @@
+/*
+ * Virtual hardware watchdog.
+ *
+ * Copyright (C) 2009 Red Hat Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * By Richard W.M. Jones (rjones@redhat.com).
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/option.h"
+#include "qemu/config-file.h"
+#include "qemu/queue.h"
+#include "qapi/error.h"
+#include "qapi/qapi-commands-run-state.h"
+#include "qapi/qapi-events-run-state.h"
+#include "sysemu/runstate.h"
+#include "sysemu/watchdog.h"
+#include "hw/nmi.h"
+#include "qemu/help_option.h"
+
+static WatchdogAction watchdog_action = WATCHDOG_ACTION_RESET;
+
+WatchdogAction get_watchdog_action(void)
+{
+    return watchdog_action;
+}
+
+/* This actually performs the "action" once a watchdog has expired,
+ * ie. reboot, shutdown, exit, etc.
+ */
+void watchdog_perform_action(void)
+{
+    switch (watchdog_action) {
+    case WATCHDOG_ACTION_RESET:     /* same as 'system_reset' in monitor */
+        qapi_event_send_watchdog(WATCHDOG_ACTION_RESET);
+        qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
+        break;
+
+    case WATCHDOG_ACTION_SHUTDOWN:  /* same as 'system_powerdown' in monitor */
+        qapi_event_send_watchdog(WATCHDOG_ACTION_SHUTDOWN);
+        qemu_system_powerdown_request();
+        break;
+
+    case WATCHDOG_ACTION_POWEROFF:  /* same as 'quit' command in monitor */
+        qapi_event_send_watchdog(WATCHDOG_ACTION_POWEROFF);
+        exit(0);
+
+    case WATCHDOG_ACTION_PAUSE:     /* same as 'stop' command in monitor */
+        /* In a timer callback, when vm_stop calls qemu_clock_enable
+         * you would get a deadlock.  Bypass the problem.
+         */
+        qemu_system_vmstop_request_prepare();
+        qapi_event_send_watchdog(WATCHDOG_ACTION_PAUSE);
+        qemu_system_vmstop_request(RUN_STATE_WATCHDOG);
+        break;
+
+    case WATCHDOG_ACTION_DEBUG:
+        qapi_event_send_watchdog(WATCHDOG_ACTION_DEBUG);
+        fprintf(stderr, "watchdog: timer fired\n");
+        break;
+
+    case WATCHDOG_ACTION_NONE:
+        qapi_event_send_watchdog(WATCHDOG_ACTION_NONE);
+        break;
+
+    case WATCHDOG_ACTION_INJECT_NMI:
+        qapi_event_send_watchdog(WATCHDOG_ACTION_INJECT_NMI);
+        nmi_monitor_handle(0, NULL);
+        break;
+
+    default:
+        assert(0);
+    }
+}
+
+void qmp_watchdog_set_action(WatchdogAction action, Error **errp)
+{
+    watchdog_action = action;
+}