1 files changed, 63 insertions, 0 deletions
diff --git a/src/events/save.c b/src/events/save.c
new file mode 100644
index 0000000..8fa733e
--- /dev/null
+++ b/src/events/save.c
@@ -0,0 +1,63 @@
+/*
+ * save.c - send new time to the time setter
+ * Copyright (c) 2013 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "config.h"
+
+#include <errno.h>
+#include <string.h>
+#include <sys/time.h>
+#include <unistd.h>
+
+#include <event2/event.h>
+
+#include "src/conf.h"
+#include "src/util.h"
+#include "src/tlsdate.h"
+
+void action_sync_and_save (evutil_socket_t fd, short what, void *arg)
+{
+  struct state *state = arg;
+  time_t t = state->last_time;
+  ssize_t bytes;
+  verb_debug ("[event:%s] fired", __func__);
+  /* For all non-net sources, don't write to disk by
+   * flagging the time negative.  We don't use negative
+   * times and this won't effect shutdown (0) writes.
+   */
+  if (state->last_sync_type != SYNC_TYPE_NET)
+    t = -t;
+  if (what & EV_READ)
+    {
+      /* EPIPE/EBADF notification */
+      error ("[event:%s] time setter is gone!", __func__);
+      /* SIGCHLD will handle teardown. */
+      return;
+    }
+  bytes = IGNORE_EINTR (write (fd, &t, sizeof (t)));
+  if (bytes == -1)
+    {
+      if (errno == EPIPE)
+        {
+          error ("[event:%s] time setter is gone! (EPIPE)", __func__);
+          return;
+        }
+      if (errno == EAGAIN)
+        return; /* Get notified again. */
+      error ("[event:%s] Unexpected errno %d", __func__, errno);
+    }
+  if (bytes != sizeof (t))
+    pfatal ("[event:%s] unexpected write to time setter (%d)",
+            __func__, bytes);
+  /* If we're going down and we wrote the time, send a shutdown message. */
+  if (state->exitting && t)
+    {
+      state->last_time = 0;
+      action_sync_and_save (fd, what, arg);
+      /* TODO(wad) platform->pgrp_kill() ? */
+    }
+  return;
+}