[NaCl SDK] Create Filesystem nodes in /dev/fs/...

native_client_sdk/src/tests/nacl_io_test/kernel_proxy_test.cc

 // Copyright (c) 2012 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 <errno.h>
 #include <fcntl.h>
 #include <pthread.h>
 #include <stdio.h>
 #include <sys/stat.h>
 
@@ skipping 524 matching lines @@
   ASSERT_GT(fd, -1);
   EXPECT_EQ(5, ki_write(fd, "hello", 5));
   EXPECT_EQ(0, ki_close(fd));
   EXPECT_EQ(-1, ki_write(fd, "hello", 5));
   EXPECT_EQ(EBADF, errno);
 }
 
 namespace {
 
 StringMap_t g_string_map;
+bool g_fs_ioctl_called;
+int g_fs_dev;
 
 class KernelProxyMountTest_Filesystem : public MemFs {
  public:
-  using MemFs::Init;
+  virtual Error Init(const FsInitArgs& args) {
+    MemFs::Init(args);
 
-  virtual Error Init(const FsInitArgs& args) {
     g_string_map = args.string_map;
+    g_fs_dev = args.dev;
+
     if (g_string_map.find("false") != g_string_map.end())
       return EINVAL;
     return 0;
   }
 
+  virtual Error Filesystem_VIoctl(int request, va_list arglist) {
+    g_fs_ioctl_called = true;
+    return 0;
+  }
+
   friend class TypedFsFactory<KernelProxyMountTest_Filesystem>;
 };
 
 class KernelProxyMountTest_KernelProxy : public KernelProxy {
   virtual Error Init(PepperInterface* ppapi) {
     KernelProxy::Init(NULL);
     factories_["initfs"] = new TypedFsFactory<KernelProxyMountTest_Filesystem>;
     return 0;
   }
 };
 
 class KernelProxyMountTest : public ::testing::Test {
  public:
   KernelProxyMountTest() {}
 
   void SetUp() {
+    g_string_map.clear();
+    g_fs_dev = -1;
+    g_fs_ioctl_called = false;
+
     ASSERT_EQ(0, ki_push_state_for_testing());
     ASSERT_EQ(0, ki_init(&kp_));
   }
 
-  void TearDown() { ki_uninit(); }
+  void TearDown() {
+    g_string_map.clear();
+    ki_uninit();
+  }
 
  private:
   KernelProxyMountTest_KernelProxy kp_;
 };
 
+// Helper function for calling ki_ioctl without having
+// to construct a va_list.
+int ki_ioctl_wrapper(int fd, int request, ...) {
+  va_list ap;
+  va_start(ap, request);
+  int rtn = ki_ioctl(fd, request, ap);
+  va_end(ap);
+  return rtn;
+}
+
 }  // namespace
 
 TEST_F(KernelProxyMountTest, MountInit) {
   int res1 = ki_mount("/", "/mnt1", "initfs", 0, "false,foo=bar");
 
   EXPECT_EQ("bar", g_string_map["foo"]);
   EXPECT_EQ(-1, res1);
   EXPECT_EQ(EINVAL, errno);
 
   int res2 = ki_mount("/", "/mnt2", "initfs", 0, "true,bar=foo,x=y");
   EXPECT_NE(-1, res2);
   EXPECT_EQ("y", g_string_map["x"]);
 }
 
+TEST_F(KernelProxyMountTest, MountAndIoctl) {
+  ASSERT_EQ(0, ki_mount("/", "/mnt1", "initfs", 0, ""));
+  ASSERT_NE(-1, g_fs_dev);
+
+  char path[100];
+  snprintf(path, 100, "dev/fs/%d", g_fs_dev);
+
+  int fd = ki_open(path, O_RDONLY);
+  ASSERT_GT(fd, -1);
+
+  EXPECT_EQ(0, ki_ioctl_wrapper(fd, 0xdeadbeef));
+  EXPECT_EQ(true, g_fs_ioctl_called);
+}
+
 namespace {
 
 int g_MMapCount = 0;
 
 class KernelProxyMMapTest_Node : public Node {
  public:
   KernelProxyMMapTest_Node(Filesystem* filesystem)
       : Node(filesystem), node_mmap_count_(0) {
     EXPECT_EQ(0, Init(0));
   }
@@ skipping 190 matching lines @@
 
   int fd = ki_open("/dummy", O_RDONLY);
   EXPECT_NE(0, fd);
 
   char buf[20];
   EXPECT_EQ(-1, ki_read(fd, &buf[0], 20));
   // The Filesystem should be able to return whatever error it wants and have it
   // propagate through.
   EXPECT_EQ(1234, errno);
 }