Plumbing though mode parameter to open, since fusefs can make use of it.

native_client_sdk/src/tests/nacl_io_test/fuse_fs_test.cc

 // Copyright 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 <fcntl.h>
 
 #include <gtest/gtest.h>
 
 #include <string>
 #include <vector>
@@ skipping 323 matching lines @@
 
 void KernelProxyFuseTest::TearDown() {
   nacl_io_unregister_fs_type("flatfs");
   ki_uninit();
 }
 
 }  // namespace
 
 TEST_F(KernelProxyFuseTest, Basic) {
   // Write a file.
-  int fd = ki_open("/hello", O_WRONLY | O_CREAT);
+  int fd = ki_open("/hello", O_WRONLY | O_CREAT, 0777);
   ASSERT_GT(fd, -1);
   ASSERT_EQ(sizeof(hello_world),
             ki_write(fd, hello_world, sizeof(hello_world)));
   EXPECT_EQ(0, ki_close(fd));
 
   // Then read it back in.
-  fd = ki_open("/hello", O_RDONLY);
+  fd = ki_open("/hello", O_RDONLY, 0777);

[binji, 2014/09/11 23:51:41]

0 instead of 0777?

[bradn, 2014/09/12 06:17:03]

Done.

   ASSERT_GT(fd, -1);
 
   char buffer[30];
   memset(buffer, 0, sizeof(buffer));
   ASSERT_EQ(sizeof(hello_world), ki_read(fd, buffer, sizeof(buffer)));
   EXPECT_STREQ(hello_world, buffer);
   EXPECT_EQ(0, ki_close(fd));
 }