[Xen-devel] [PATCH 3 of 7 v4] blktap3/tapback: Logging for the tapback daemon and libxenio

[Thanos Makatos <thanos.makatos@xxxxxxxxxx>]

Signed-off-by: Thanos Makatos <thanos.makatos@xxxxxxxxxx>

---
Changed since v2:
  * minor whitespace clean up

diff --git a/tools/blktap3/tapback/log.c b/tools/blktap3/tapback/log.c
new file mode 100644
--- /dev/null
+++ b/tools/blktap3/tapback/log.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2012      Citrix Ltd.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ */
+
+#include "compiler.h"
+#include <stdarg.h>
+#include <syslog.h>
+
+void (*tapback_vlog) (int prio, const char *fmt, va_list ap) = vsyslog;
+
+__printf(2, 3) void
+tapback_log(int prio, const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    tapback_vlog(prio, fmt, ap);
+    va_end(ap);
+}

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