1 files changed, 66 insertions, 0 deletions
diff --git a/runtime/os_linux.cc b/runtime/os_linux.cc
new file mode 100644
index 000000000..d3a1ccbcb
--- /dev/null
+++ b/runtime/os_linux.cc
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "os.h"
+
+#include <cstddef>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include "base/logging.h"
+#include "base/unix_file/fd_file.h"
+#include "UniquePtr.h"
+
+namespace art {
+
+File* OS::OpenFile(const char* name, bool writable, bool create) {
+  CHECK(name != NULL);
+  int flags = 0;
+  if (writable) {
+    flags |= O_RDWR;
+    if (create) {
+      flags |= (O_CREAT | O_TRUNC);
+    }
+  } else {
+    flags |= O_RDONLY;
+  }
+  UniquePtr<File> file(new File);
+  if (!file->Open(name, flags, 0666)) {
+    return NULL;
+  }
+  return file.release();
+}
+
+bool OS::FileExists(const char* name) {
+  struct stat st;
+  if (stat(name, &st) == 0) {
+    return S_ISREG(st.st_mode);  // TODO: Deal with symlinks?
+  } else {
+    return false;
+  }
+}
+
+bool OS::DirectoryExists(const char* name) {
+  struct stat st;
+  if (stat(name, &st) == 0) {
+    return S_ISDIR(st.st_mode);  // TODO: Deal with symlinks?
+  } else {
+    return false;
+  }
+}
+
+}  // namespace art