[NaCl SDK] nacl_io: Added support for access() syscall.

native_client_sdk/src/libraries/nacl_io_test/mount_http_test.cc

Index: native_client_sdk/src/libraries/nacl_io_test/mount_http_test.cc
diff --git a/native_client_sdk/src/libraries/nacl_io_test/mount_http_test.cc b/native_client_sdk/src/libraries/nacl_io_test/mount_http_test.cc
index f7c21de5abbddc74730baba4a0efa0c0fea6f469..4c885afc01361bbe9876bce76d1d74d6d6f96ca4 100644
--- a/native_client_sdk/src/libraries/nacl_io_test/mount_http_test.cc
+++ b/native_client_sdk/src/libraries/nacl_io_test/mount_http_test.cc
@@ -386,6 +386,36 @@ TEST_F(MountHttpNodeTest, GetStat) {
   EXPECT_EQ(42, stat.st_size);
 }
 
+TEST_F(MountHttpNodeTest, Access) {
+  StringMap_t smap;
+  smap["cache_content"] = "false";
+  SetMountArgs(StringMap_t());
+  ExpectOpen("HEAD");
+  ExpectHeaders("");
+  SetResponse(200, "");
+  ASSERT_EQ(0, mnt_->Access(Path(path_), R_OK));
+}
+
+TEST_F(MountHttpNodeTest, AccessWrite) {
+  StringMap_t smap;
+  smap["cache_content"] = "false";
+  SetMountArgs(StringMap_t());
+  ExpectOpen("HEAD");
+  ExpectHeaders("");
+  SetResponse(200, "");
+  ASSERT_EQ(EACCES, mnt_->Access(Path(path_), W_OK));
+}
+
+TEST_F(MountHttpNodeTest, AccessNotFound) {
+  StringMap_t smap;
+  smap["cache_content"] = "false";
+  SetMountArgs(StringMap_t());
+  ExpectOpen("HEAD");
+  ExpectHeaders("");
+  SetResponseExpectFail(404, "");
+  ASSERT_EQ(ENOENT, mnt_->Access(Path(path_), R_OK));
+}
+
 TEST_F(MountHttpNodeTest, ReadCached) {
   size_t result_size = 0;
   int result_bytes = 0;