1 files changed, 54 insertions, 0 deletions
diff --git a/base/scoped_fd.h b/base/scoped_fd.h
new file mode 100644
index 0000000..2837ff8
--- /dev/null
+++ b/base/scoped_fd.h
@@ -0,0 +1,54 @@
+// Copyright (c) 2009 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.
+
+#if !defined(BASE_SCOPED_FD_H_) && defined(OS_POSIX)
+#define BASE_SCOPED_FD_H_
+
+#include "base/eintr_wrapper.h"
+
+// POSIX only
+//
+// A wrapper class for file descriptors which automatically closes them when
+// they go out of scope:
+//   ScopedFd fd(open("/tmp/file", O_RDONLY));
+//   read(fd.get(), ...);
+class ScopedFd {
+ public:
+  ScopedFd()
+      : fd_(-1) { }
+
+  explicit ScopedFd(int fd)
+      : fd_(fd) { }
+
+  ~ScopedFd() {
+    Close();
+  }
+
+  void Close() {
+    if (fd_ >= 0) {
+      HANDLE_EINTR(close(fd_));
+      fd_ = -1;
+    }
+  }
+
+  int get() const { return fd_; }
+
+  int Take() {
+    const int temp = fd_;
+    fd_ = -1;
+    return temp;
+  }
+
+  void Set(int new_fd) {
+    Close();
+    fd_ = new_fd;
+  }
+
+ private:
+  int fd_;
+
+  DISALLOW_EVIL_CONSTRUCTORS(ScopedFd);
+};
+
+#endif // BASE_SCOPED_FD_H_