1 files changed, 41 insertions, 0 deletions
diff --git a/tools/virtiofsd/fuse_log.c b/tools/virtiofsd/fuse_log.c
new file mode 100644
index 0000000000..c301ff6da1
--- /dev/null
+++ b/tools/virtiofsd/fuse_log.c
@@ -0,0 +1,41 @@
+/*
+ * FUSE: Filesystem in Userspace
+ * Copyright (C) 2019  Red Hat, Inc.
+ *
+ * Logging API.
+ *
+ * This program can be distributed under the terms of the GNU LGPLv2.
+ * See the file COPYING.LIB
+ */
+
+#include "qemu/osdep.h"
+#include "fuse_log.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+
+static void default_log_func(__attribute__((unused)) enum fuse_log_level level,
+                             const char *fmt, va_list ap)
+{
+    vfprintf(stderr, fmt, ap);
+}
+
+static fuse_log_func_t log_func = default_log_func;
+
+void fuse_set_log_func(fuse_log_func_t func)
+{
+    if (!func) {
+        func = default_log_func;
+    }
+
+    log_func = func;
+}
+
+void fuse_log(enum fuse_log_level level, const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    log_func(level, fmt, ap);
+    va_end(ap);
+}