1 files changed, 49 insertions, 0 deletions
diff --git a/xlators/meta/src/measure-file.c b/xlators/meta/src/measure-file.c
new file mode 100644
index 00000000000..52e92e48590
--- /dev/null
+++ b/xlators/meta/src/measure-file.c
@@ -0,0 +1,49 @@
+/*
+   Copyright (c) 2014 Red Hat, Inc. <http://www.redhat.com>
+   This file is part of GlusterFS.
+
+   This file is licensed to you under your choice of the GNU Lesser
+   General Public License, version 3 or any later version (LGPLv3 or
+   later), or the GNU General Public License, version 2 (GPLv2), in all
+   cases as published by the Free Software Foundation.
+*/
+
+#include <glusterfs/xlator.h>
+#include <glusterfs/defaults.h>
+
+#include "meta-mem-types.h"
+#include "meta.h"
+#include <glusterfs/strfd.h>
+
+static int
+measure_file_fill(xlator_t *this, inode_t *file, strfd_t *strfd)
+{
+    strprintf(strfd, "%d\n", this->ctx->measure_latency);
+
+    return strfd->size;
+}
+
+static int
+measure_file_write(xlator_t *this, fd_t *fd, struct iovec *iov, int count)
+{
+    long int num = -1;
+
+    num = strtol(iov[0].iov_base, NULL, 0);
+    this->ctx->measure_latency = !!num;
+
+    return iov_length(iov, count);
+}
+
+static struct meta_ops measure_file_ops = {
+    .file_fill = measure_file_fill,
+    .file_write = measure_file_write,
+};
+
+int
+meta_measure_file_hook(call_frame_t *frame, xlator_t *this, loc_t *loc,
+                       dict_t *xdata)
+{
+    meta_ops_set(loc->inode, this, &measure_file_ops);
+
+    return 0;
+}